chore(release): publish packages

- thermion_flutter@0.2.0-dev.3.0

.gitattributes

@@ -153,10 +153,7 @@ thermion_dart/native/lib/ios/libibl-lite.a filter=lfs diff=lfs merge=lfs -text
 thermion_dart/native/lib/ios/libimageio.a filter=lfs diff=lfs merge=lfs -text
 materials/Makefile filter=lfs diff=lfs merge=lfs -text
 materials/gizmo.filamat filter=lfs diff=lfs merge=lfs -text
-materials/gizmo.mat filter=lfs diff=lfs merge=lfs -text
 materials/image.filamat filter=lfs diff=lfs merge=lfs -text
-materials/image.mat filter=lfs diff=lfs merge=lfs -text
-materials/unlit_fade.mat filter=lfs diff=lfs merge=lfs -text
 materials/unlit_opaque.mat filter=lfs diff=lfs merge=lfs -text
 thermion_dart/native/lib/android/arm64-v8a/libktxreader.a filter=lfs diff=lfs merge=lfs -text
 thermion_dart/native/lib/android/armeabi-v7a/libcamutils.a filter=lfs diff=lfs merge=lfs -text

CHANGELOG.md

@@ -3,6 +3,156 @@
 All notable changes to this project will be documented in this file.
 See [Conventional Commits](https://conventionalcommits.org) for commit guidelines.
 
+## 2024-09-25
+
+### Changes
+
+---
+
+Packages with breaking changes:
+
+ - [`thermion_flutter` - `v0.2.0-dev.3.0`](#thermion_flutter---v020-dev30)
+
+Packages with other changes:
+
+ - There are no other changes in this release.
+
+---
+
+#### `thermion_flutter` - `v0.2.0-dev.3.0`
+
+ - **BREAKING** **FIX**: remove EntityControllerMouseWidget (replace with GestureHandler).
+ - **BREAKING** **CHORE**: (flutter) cleanup for pub.dev publishing.
+
+
+## 2024-09-25
+
+### Changes
+
+---
+
+Packages with breaking changes:
+
+ - [`thermion_flutter` - `v0.2.0-dev.2.0`](#thermion_flutter---v020-dev20)
+
+Packages with other changes:
+
+ - There are no other changes in this release.
+
+---
+
+#### `thermion_flutter` - `v0.2.0-dev.2.0`
+
+ - **BREAKING** **CHORE**: remove EntityListWidget - will replace with new Scene.
+
+
+## 2024-09-25
+
+### Changes
+
+---
+
+Packages with breaking changes:
+
+ - [`thermion_dart` - `v0.2.0-dev.1.0`](#thermion_dart---v020-dev10)
+ - [`thermion_flutter` - `v0.2.0-dev.1.0`](#thermion_flutter---v020-dev10)
+ - [`thermion_flutter_ffi` - `v0.2.0-dev.1.0`](#thermion_flutter_ffi---v020-dev10)
+ - [`thermion_flutter_platform_interface` - `v0.2.0-dev.1.0`](#thermion_flutter_platform_interface---v020-dev10)
+ - [`thermion_flutter_web` - `v0.1.0-dev.1.0`](#thermion_flutter_web---v010-dev10)
+
+Packages with other changes:
+
+ - There are no other changes in this release.
+
+---
+
+#### `thermion_dart` - `v0.2.0-dev.1.0`
+
+ - **REFACTOR**: native types.
+ - **REFACTOR**: native types.
+ - **REFACTOR**: move native types to own header, add methods for create/destroy material instance, add priority/layer to load_glb_from_buffer.
+ - **REFACTOR**: Dart types.
+ - **FIX**: (web) add emscripten guards for flushAndWait call when swapchain destroyed.
+ - **FIX**: ignore pick results directly on axis.
+ - **FIX**: properly destroy entities/material/etc in Gizmo on destruction, remove custom scene creation logic.
+ - **FIX**: add check for nan NDC coordinates for viewport translation.
+ - **FIX**: (wasm) use correct coords for pick, free memory correctly, keep pixelratio copy.
+ - **FIX**: add more nan checks for gizmo manipulation.
+ - **FIX**: emscripten export visibility for add_light.
+ - **FIX**: add Fence to capture() and set stencil buffer by default.
+ - **FEAT**: add removeStencilHighlight, queuePositionUpdateFromViewportCoords to ThermionViewer.
+ - **FEAT**: add removeStencilHighlight, accept color param for setStencilHighlight, queuePositionUpdateFromViewportCoords to ThermionDartApi.
+ - **FEAT**: add flag for keepData for gltf instancing, add highlightScene, add stencilHighlight method.
+ - **FEAT**: grid uses own material.
+ - **FEAT**: parent the cloned entity instance when setting stencil highlight.
+ - **FEAT**: add grid material.
+ - **FEAT**: expose setLightDirection and setLightPosition.
+ - **FEAT**: move HighlightOverlay to nested class, move createGeometry to SceneManager, add queueRelativePositionUpdateFromViewportVector.
+ - **FEAT**: move createGeometry to SceneManager, add queueRelativePositionUpdateFromViewportVector and removeStencilHighlight.
+ - **FEAT**: add setGizmoVisibility/pickGizmo methods to ThermionViewer.
+ - **FEAT**: remove gizmo view references, exclude gizmo entities from picking, add createIbl.
+ - **FEAT**: set stencil highlight on gizmo attach.
+ - **FEAT**: add getAncestor method.
+ - **FEAT**: expose API methods for create_ibl, pick/set gizmo visibility.
+ - **FEAT**: create transparent overlay for gizmo for easier picking.
+ - **FEAT**: rescale gizmo based on distance from camera.
+ - **FEAT**: rescale gizmo based on distance from camera.
+ - **FEAT**: add getAncestor method.
+ - **FEAT**: add startOffset parameter to gltf playAnimation.
+ - **FEAT**: layers, grid.
+ - **FEAT**: layers, grid.
+ - **FEAT**: ignore grid overlay and gizmo center when picking, implement highlighting.
+ - **FEAT**: SceneManager updates (setLayer, add grid, queueRelativePositionUpdateWorld.
+ - **FEAT**: expose set_layer_enabled, get_camera_fov and queue_relative_position_updateg_world_axis to ThermionDartApi.h.
+ - **FEAT**: add getCameraFov to FilamentViewer.
+ - **FEAT**: add new grid overlay files to web CmakeLists.
+ - **FEAT**: re-implement (native) Gizmo class, expose preserveScaling parameter for setParent, add methods for getting viewport bounding box from renderable entity.
+ - **FEAT**: expose setLayerEnabled, viewportDimensions and getCameraFov on ThermionView.
+ - **FEAT**: download WASM module directly on web (no need to embed in index.html any more) and expose updateViewportAndCameraProjection.
+ - **FEAT**: add capture() function and expose viewportDimensions on ThermionViewer (allows easier saving of captured images to PNG).
+ - **FEAT**: (web) allow table growth in emscripten module for passing C-style callback function pointers.
+ - **FEAT**: (web) add capture() method and missing camera navigation controls.
+ - **FEAT**: createIbl.
+ - **BREAKING** **FEAT**: (web) (flutter) create canvas when createViewer is called (no longer need to manually add canvas element to web HTML).
+ - **BREAKING** **FEAT**: update web/http dependencies.
+
+#### `thermion_flutter` - `v0.2.0-dev.1.0`
+
+ - **FIX**: (flutter) pass ThermionFlutterOptions to ThermionWidget, use dpr for resizeTexture, delete unnecessary TransparencyPainter class.
+ - **FIX**: (flutter/web) use window.devicePixelRatio for viewport.
+ - **FIX**: (flutter) desktop gesture detector changes for new Gizmo methods.
+ - **FEAT**: allow passing null options to ThermionWidget.
+ - **FEAT**: (flutter) (web) if importCanvasAsWidget is false, render transparency.
+ - **FEAT**: add createViewerWithOptions to ThermionFlutterPlugin and mark createViewer as deprecated.
+ - **FEAT**: add createViewerWithOptions to ThermionFlutterPlugin and mark createViewer as deprecated.
+ - **FEAT**: highlight gizmo on hover.
+ - **BREAKING** **FIX**: (flutter) pass pixelRatio to createTexture.
+ - **BREAKING** **FIX**: (flutter) pass pixelRatio to createTexture.
+ - **BREAKING** **FEAT**: (web) (flutter) create canvas when createViewer is called (no longer need to manually add canvas element to web HTML).
+ - **BREAKING** **FEAT**: resize canvas on web.
+ - **BREAKING** **CHORE**: rename controller to viewer in gesture detector widgets.
+
+#### `thermion_flutter_ffi` - `v0.2.0-dev.1.0`
+
+ - **FEAT**: (flutter) move DPR calculation to resizeTexture and add createViewerWithOptions method to ThermionFlutterFFI.
+ - **BREAKING** **FIX**: (flutter) pass pixelRatio to createTexture.
+
+#### `thermion_flutter_platform_interface` - `v0.2.0-dev.1.0`
+
+ - **FEAT**: add createViewerWithOptions to ThermionFlutterPlugin and mark createViewer as deprecated.
+ - **FEAT**: add ThermionFlutterOptions classes, rename interface parameter for offsetTop and ensure pixelRatio is passed to resizeTexture.
+ - **BREAKING** **FIX**: (flutter) pass pixelRatio to createTexture.
+
+#### `thermion_flutter_web` - `v0.1.0-dev.1.0`
+
+ - **FIX**: (flutter/web) use window.devicePixelRatio for viewport.
+ - **FEAT**: (flutter) (web) use options to determine whether to create canvas, and set fixed position + offset.
+ - **FEAT**: add ThermionFlutterOptions classes, rename interface parameter for offsetTop and ensure pixelRatio is passed to resizeTexture.
+ - **BREAKING** **FEAT**: (flutter) (web) upgrade package:web dep to 1.0.0.
+ - **BREAKING** **FEAT**: (web) (flutter) create canvas when createViewer is called (no longer need to manually add canvas element to web HTML).
+ - **BREAKING** **FEAT**: resize canvas on web.
+
+
 ## 2024-07-23
 
 ### Changes

Makefile

@@ -22,10 +22,13 @@ bindings:
 # 
 materials: FORCE
 	@echo "Using Filament build from ${FILAMENT_PATH}"
-	${FILAMENT_PATH}/matc -a opengl -a metal -o materials/image.filamat materials/image.mat
+	@for material in unlit image gizmo grid; do \
-	$(FILAMENT_PATH)/resgen -c -p image -x ios/include/material/ materials/image.filamat   
+		${FILAMENT_PATH}/matc -a opengl -a metal -o materials/$$material.filamat materials/$$material.mat; \
-	$(FILAMENT_PATH)/matc -a opengl -a metal -o materials/gizmo.filamat materials/gizmo.mat
+		$(FILAMENT_PATH)/resgen -c -p $$material -x thermion_dart/native/include/material/ materials/$$material.filamat; \
-	$(FILAMENT_PATH)/resgen -c -p gizmo -x ios/include/material/ materials/gizmo.filamat
+		echo '#include "'$$material'.h"' | cat - thermion_dart/native/include/material/$$material.c > thermion_dart/native/include/material/$$material.c.new; \
+		mv thermion_dart/native/include/material/$$material.c.new thermion_dart/native/include/material/$$material.c; \
+	done
+
 	#rm materials/*.filamat
 
 FORCE: ;

docs/showcase.mdx

@@ -6,6 +6,13 @@ A custom DartPad that lets you experiment with Thermion from your browser (curre
 
 [![Screenshot of Thermion Dartpad](images/dartpad.thermion.dev_.png)](https://dartpad.thermion.dev)
 
+## mixreel (Flutter/Web)
+
+Create 3D worlds and translate to AI video.
+
+[![Screenshot of the mixreeel app](images/ixlabs.app_app.png)](https://mixreel.ai)
+
+
 ## Nick Fisher 
 
 My personal website, where I create an interactive clone of myself with Avaturn & Cartesia (no Flutter, made with Thermion and the [Jaspr Dart UI framework](https://github.com/schultek/jaspr)).

materials/Makefile

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:14a484a441dacbc49ce6b8b189a8900a7bb2ab2072731a3a493676aa046b5888
-size 1009

materials/gizmo.mat

@@ -1,3 +1,50 @@
-version https://git-lfs.github.com/spec/v1
+    material {
-oid sha256:3158461d081f058dcb9582ce19cc2daedc73abbe758ba5094c94df89028d8c4d
+        name : Gizmo,
-size 981
+        parameters : [
+            {
+                type : mat4,
+                name : transform,
+                precision : high
+            },
+            {
+                type : float4,
+                name : color,
+                precision : low
+            }
+        ],
+        depthWrite : true,
+        depthCulling : false,
+        shadingModel : unlit,
+        blending: transparent,
+        variantFilter : [ skinning, shadowReceiver, vsm ],
+        culling: none,
+        instanced: false,
+        vertexDomain: object
+    }
+
+    vertex {
+        void materialVertex(inout MaterialVertexInputs material) {	
+
+            // we want to ensure the gizmo has the same size (in screen-space), no matter the distance from the camera
+            // we do this by scaling the model-space vertex positions by the distance from the camera
+            vec4 modelSpace = getPosition();
+            vec4 worldSpace = getWorldFromModelMatrix() * modelSpace;
+            vec4 viewSpace = getViewFromWorldMatrix() * worldSpace;           
+            float distanceFromCamera = length(viewSpace.xyz);
+            modelSpace.xyz *= (distanceFromCamera / 4.0f); // divide by 4 so that the size is equivalent to the camera being 4 world-space units away from the (unscaled) gizmo
+
+            worldSpace = getWorldFromModelMatrix() * modelSpace;
+            material.worldPosition = worldSpace;
+            //vec4 clipSpace = getClipFromWorldMatrix() * worldSpace;
+            //clipSpace.z = 0.99f;
+            //material.worldPosition = getWorldFromClipMatrix() * clipSpace;
+        }
+    }
+
+    fragment {
+        void material(inout MaterialInputs material) {
+            prepareMaterial(material);
+            material.baseColor = materialParams.color;
+        }
+    }
+

materials/grid.mat

@@ -0,0 +1,53 @@
+material {
+    name : Grid,
+    parameters : [
+        {
+            type : float,
+            name : maxDistance
+        },
+        {
+            type : float3,
+            name : color
+        }
+    ],
+    depthWrite : true,
+    depthCulling : false,
+    shadingModel : unlit,
+    blending: transparent,
+    variantFilter : [ skinning, shadowReceiver, vsm ],
+    culling: none,
+    instanced: false,
+    vertexDomain: object
+}
+
+vertex {
+    void materialVertex(inout MaterialVertexInputs material) {
+        material.worldPosition = getWorldFromModelMatrix() * getPosition();
+    }
+}
+
+fragment {
+    void material(inout MaterialInputs material) {
+        prepareMaterial(material);
+        
+        // Convert world position to view space
+        float4 viewPos = getViewFromWorldMatrix() * float4(getWorldPosition(), 1.0);
+        
+        // Calculate distance in view space (camera is at 0,0,0 in view space)
+        float distance = length(viewPos.xz);
+        
+        // Discard fragment if it's too far from the camera
+        if (distance > materialParams.maxDistance) {
+            material.baseColor = float4(0.0);
+        } else {
+            material.baseColor = float4(materialParams.color, 1.0);
+            
+            // Optional: fade out as we approach maxDistance
+            float fadeStart = materialParams.maxDistance * 0.8;
+            if (distance > fadeStart) {
+                float fade = 1.0 - (distance - fadeStart) / (materialParams.maxDistance - fadeStart);
+                material.baseColor.a = fade;
+            }
+        }
+    }
+}

materials/image.mat

@@ -1,3 +1,52 @@
-version https://git-lfs.github.com/spec/v1
+material {
-oid sha256:273059c97f96c6848807914d937583864445b51d8e0f1cd98c3e4e0e4bd9f411
+    name : Image,
-size 1451
+    parameters : [
+        {
+            type : sampler2d,
+            name : image
+        },
+        {
+            type : mat4,
+            name : transform,
+            precision : high
+        },
+        {
+            type : float4,
+            name : backgroundColor
+        },
+        {
+            type : int,
+            name : showImage
+        }
+    ],
+    variables : [
+        imageUV
+    ],
+    vertexDomain : device,
+    depthWrite : false,
+    shadingModel : unlit,
+    variantFilter : [ skinning, shadowReceiver, vsm ],
+    culling: none
+}
+
+vertex {
+    void materialVertex(inout MaterialVertexInputs material) {
+        material.imageUV.st = getPosition().st * 0.5 + 0.5;
+    }
+}
+
+fragment {
+    void material(inout MaterialInputs material) {
+       prepareMaterial(material);
+       highp vec2 uv = (materialParams.transform * vec4(saturate(variable_imageUV.st), 1.0, 1.0)).st;
+        if (materialParams.showImage == 0 || uv.s > 1.0 || uv.s < 0.0 || uv.t < 0.0 || uv.t > 1.0) {
+            material.baseColor = materialParams.backgroundColor;
+        } else {
+            uv.t = 1.0 - uv.t;
+            vec4 color = max(texture(materialParams_image, uv.st), 0.0);
+            color.rgb *= color.a;
+            // Manual, pre-multiplied srcOver with opaque destination optimization
+            material.baseColor.rgb = color.rgb + materialParams.backgroundColor.rgb * (1.0 - color.a);
+        }
+    }
+}

materials/unlit.mat

@@ -0,0 +1,38 @@
+material {
+    name : unlit,
+    requires : [ uv0 ],
+    parameters : [
+        {
+            type : sampler2d,
+            name : baseColorMap
+        },
+        { 
+            type : float4, 
+            name : baseColorFactor 
+        },
+        { 
+            type : int, 
+            name : baseColorIndex 
+        }
+    ],
+    depthWrite : true,
+    depthCulling : true,
+    shadingModel : unlit,
+    blending: opaque,
+    culling: none,
+    instanced: false,
+    vertexDomain: object
+}
+   
+    fragment {
+        void material(inout MaterialInputs material) {
+            prepareMaterial(material);           
+            material.baseColor = materialParams.baseColorFactor;
+            
+            if (materialParams.baseColorIndex > -1) {
+                highp float2 uv = getUV0();
+                uv.y = 1.0 - uv.y;
+                material.baseColor *= texture(materialParams_baseColorMap, uv);
+            }
+        }
+    }

materials/unlit_opaque.mat

@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:4abb9e737d20956cced366af6a54dd31ab17cc8d0d1773f02c57a5712760fe10
-size 7385

thermion_dart/CHANGELOG.md

@@ -1,3 +1,55 @@
+## 0.2.0-dev.1.0
+
+> Note: This release has breaking changes.
+
+ - **REFACTOR**: native types.
+ - **REFACTOR**: native types.
+ - **REFACTOR**: move native types to own header, add methods for create/destroy material instance, add priority/layer to load_glb_from_buffer.
+ - **REFACTOR**: Dart types.
+ - **FIX**: (web) add emscripten guards for flushAndWait call when swapchain destroyed.
+ - **FIX**: ignore pick results directly on axis.
+ - **FIX**: properly destroy entities/material/etc in Gizmo on destruction, remove custom scene creation logic.
+ - **FIX**: add check for nan NDC coordinates for viewport translation.
+ - **FIX**: (wasm) use correct coords for pick, free memory correctly, keep pixelratio copy.
+ - **FIX**: add more nan checks for gizmo manipulation.
+ - **FIX**: emscripten export visibility for add_light.
+ - **FIX**: add Fence to capture() and set stencil buffer by default.
+ - **FEAT**: add removeStencilHighlight, queuePositionUpdateFromViewportCoords to ThermionViewer.
+ - **FEAT**: add removeStencilHighlight, accept color param for setStencilHighlight, queuePositionUpdateFromViewportCoords to ThermionDartApi.
+ - **FEAT**: add flag for keepData for gltf instancing, add highlightScene, add stencilHighlight method.
+ - **FEAT**: grid uses own material.
+ - **FEAT**: parent the cloned entity instance when setting stencil highlight.
+ - **FEAT**: add grid material.
+ - **FEAT**: expose setLightDirection and setLightPosition.
+ - **FEAT**: move HighlightOverlay to nested class, move createGeometry to SceneManager, add queueRelativePositionUpdateFromViewportVector.
+ - **FEAT**: move createGeometry to SceneManager, add queueRelativePositionUpdateFromViewportVector and removeStencilHighlight.
+ - **FEAT**: add setGizmoVisibility/pickGizmo methods to ThermionViewer.
+ - **FEAT**: remove gizmo view references, exclude gizmo entities from picking, add createIbl.
+ - **FEAT**: set stencil highlight on gizmo attach.
+ - **FEAT**: add getAncestor method.
+ - **FEAT**: expose API methods for create_ibl, pick/set gizmo visibility.
+ - **FEAT**: create transparent overlay for gizmo for easier picking.
+ - **FEAT**: rescale gizmo based on distance from camera.
+ - **FEAT**: rescale gizmo based on distance from camera.
+ - **FEAT**: add getAncestor method.
+ - **FEAT**: add startOffset parameter to gltf playAnimation.
+ - **FEAT**: layers, grid.
+ - **FEAT**: layers, grid.
+ - **FEAT**: ignore grid overlay and gizmo center when picking, implement highlighting.
+ - **FEAT**: SceneManager updates (setLayer, add grid, queueRelativePositionUpdateWorld.
+ - **FEAT**: expose set_layer_enabled, get_camera_fov and queue_relative_position_updateg_world_axis to ThermionDartApi.h.
+ - **FEAT**: add getCameraFov to FilamentViewer.
+ - **FEAT**: add new grid overlay files to web CmakeLists.
+ - **FEAT**: re-implement (native) Gizmo class, expose preserveScaling parameter for setParent, add methods for getting viewport bounding box from renderable entity.
+ - **FEAT**: expose setLayerEnabled, viewportDimensions and getCameraFov on ThermionView.
+ - **FEAT**: download WASM module directly on web (no need to embed in index.html any more) and expose updateViewportAndCameraProjection.
+ - **FEAT**: add capture() function and expose viewportDimensions on ThermionViewer (allows easier saving of captured images to PNG).
+ - **FEAT**: (web) allow table growth in emscripten module for passing C-style callback function pointers.
+ - **FEAT**: (web) add capture() method and missing camera navigation controls.
+ - **FEAT**: createIbl.
+ - **BREAKING** **FEAT**: (web) (flutter) create canvas when createViewer is called (no longer need to manually add canvas element to web HTML).
+ - **BREAKING** **FEAT**: update web/http dependencies.
+
 ## 0.1.3
 
  - **FIX**: manually remove leading slash for compiler path on Windows when building for Android.

thermion_dart/ffigen/native.yaml

@@ -1,13 +1,19 @@
-output: '../lib/thermion_dart/compatibility/native/thermion_dart.g.dart'
+output: '../lib/thermion_dart/viewer/ffi/thermion_dart.g.dart'
 headers:
   entry-points:
-    - '../native/include/ThermionDartFFIApi.h'
+    - '../native/include/ThermionDartRenderThreadApi.h'
     - '../native/include/ThermionDartApi.h'
     - '../native/include/ResourceBuffer.h'
   include-directives:
-    - '../native/include/ThermionDartFFIApi.h'
+    - '../native/include/ThermionDartRenderThreadApi.h'
     - '../native/include/ThermionDartApi.h'
     - '../native/include/ResourceBuffer.h'
+    - '../native/include/APIBoundaryTypes.h'
 ffi-native:
   assetId: package:thermion_dart/thermion_dart.dart
 ignore-source-errors: true
+functions:
+  leaf:
+    include:
+      - '.*'
+

thermion_dart/hook/build.dart

@@ -60,6 +60,8 @@ void main(List<String> args) async {
     sources.addAll([
       "${config.packageRoot.toFilePath()}/native/include/material/gizmo.c",
       "${config.packageRoot.toFilePath()}/native/include/material/image.c",
+      "${config.packageRoot.toFilePath()}/native/include/material/grid.c",
+      "${config.packageRoot.toFilePath()}/native/include/material/unlit.c",
     ]);
 
     var libs = [
@@ -76,7 +78,6 @@ void main(List<String> args) async {
       "image",
       "imageio",
       "tinyexr",
-      "gltfio_core",
       "filaflat",
       "dracodec",
       "ibl",

thermion_dart/lib/thermion_dart.dart

@@ -1,8 +1,5 @@
 library filament_dart;
 
 export 'thermion_dart/thermion_viewer.dart';
-export 'thermion_dart/thermion_viewer_stub.dart'
-  if (dart.library.io) 'thermion_dart/thermion_viewer_ffi.dart'
-  if (dart.library.js_interop)'thermion_dart/compatibility/web/interop/thermion_viewer_wasm.dart';
-
 export 'thermion_dart/entities/entity_transform_controller.dart';
+export 'thermion_dart/utils/geometry.dart';

thermion_dart/lib/thermion_dart/compatibility/compatibility.dart

@@ -1 +0,0 @@
-export 'native/compatibility.dart';

thermion_dart/lib/thermion_dart/compatibility/web/ffi/allocator.dart

@@ -1,238 +0,0 @@
-import 'dart:ffi';
-export "allocator.dart";
-export "thermion_dart.g.dart";
-
-import 'dart:convert';
-import 'dart:ffi' as ffi hide Uint8Pointer, FloatPointer;
-import 'dart:typed_data';
-
-import 'package:thermion_dart/thermion_dart/compatibility/web/ffi/thermion_dart.g.dart';
-
-import 'package:ffi/ffi.dart';
-export 'package:ffi/ffi.dart' hide StringUtf8Pointer, Utf8Pointer;
-export 'dart:ffi'
-    hide
-        Uint8Pointer,
-        FloatPointer,
-        DoublePointer,
-        Int32Pointer,
-        Int64Pointer,
-        PointerPointer,
-        Allocator;
-
-class Allocator implements ffi.Allocator {
-  const Allocator();
-  @override
-  ffi.Pointer<T> allocate<T extends ffi.NativeType>(int byteCount,
-      {int? alignment}) {
-    return thermion_flutter_web_allocate(byteCount).cast<T>();
-  }
-
-  @override
-  void free(ffi.Pointer<ffi.NativeType> pointer) {
-    thermion_flutter_web_free(pointer.cast<ffi.Void>());
-  }
-}
-
-extension CharPointer on ffi.Pointer<ffi.Char> {
-  int get value {
-    return thermion_flutter_web_get(this, 0);
-  }
-
-  set value(int value) {
-    thermion_flutter_web_set(this, 0, value);
-  }
-
-  void operator []=(int index, int value) {
-    this.elementAt(index).value = value;
-  }
-
-  ffi.Pointer<ffi.Char> elementAt(int index) =>
-      ffi.Pointer.fromAddress(address + ffi.sizeOf<ffi.Char>() * index);
-}
-
-extension IntPointer on ffi.Pointer<ffi.Int> {
-  int get value {
-    return thermion_flutter_web_get_int32(this.cast<ffi.Int32>(), 0);
-  }
-
-  set value(int value) {
-    thermion_flutter_web_set_int32(this.cast<ffi.Int32>(), 0, value);
-  }
-
-  void operator []=(int index, int value) {
-    this.elementAt(index).value = value;
-  }
-
-  int operator [](int index) {
-    return this.elementAt(index).value;
-  }
-
-  ffi.Pointer<ffi.Int> elementAt(int index) =>
-      ffi.Pointer.fromAddress(address + ffi.sizeOf<ffi.Int>() * index);
-}
-
-extension Int32Pointer on ffi.Pointer<ffi.Int32> {
-  int get value {
-    return thermion_flutter_web_get_int32(this, 0);
-  }
-
-  set value(int value) {
-    thermion_flutter_web_set_int32(this, 0, value);
-  }
-
-  void operator []=(int index, int value) {
-    this.elementAt(index).value = value;
-  }
-
-  int operator [](int index) {
-    return this.elementAt(index).value;
-  }
-
-  ffi.Pointer<ffi.Int32> elementAt(int index) =>
-      ffi.Pointer.fromAddress(address + ffi.sizeOf<ffi.Int32>() * index);
-}
-
-extension UInt8Pointer on ffi.Pointer<ffi.Uint8> {
-  int get value {
-    return thermion_flutter_web_get(this.cast<ffi.Char>(), 0);
-  }
-
-  set value(int value) {
-    thermion_flutter_web_set(this.cast<ffi.Char>(), 0, value);
-  }
-
-  void operator []=(int index, int value) {
-    this.elementAt(index).value = value;
-  }
-
-  int operator [](int index) {
-    return this.elementAt(index).value;
-  }
-
-  ffi.Pointer<ffi.Uint8> elementAt(int index) =>
-      ffi.Pointer.fromAddress(address + ffi.sizeOf<ffi.Uint8>() * index);
-}
-
-extension PointerPointer<T extends ffi.NativeType>
-    on ffi.Pointer<ffi.Pointer<T>> {
-  ffi.Pointer<T> get value {
-    return thermion_flutter_web_get_pointer(cast<ffi.Pointer<ffi.Void>>(), 0)
-        .cast<T>();
-  }
-
-  set value(ffi.Pointer<T> value) {
-    thermion_flutter_web_set_pointer(
-        cast<ffi.Pointer<ffi.Void>>(), 0, value.cast<ffi.Void>());
-  }
-
-
-  ffi.Pointer<T> operator [](int index) {
-    return this.elementAt(index).value;
-  }
-
-  void operator []=(int index, ffi.Pointer<T> value) {
-    this.elementAt(index).value = value;
-  }
-
-  ffi.Pointer<ffi.Pointer<T>> elementAt(int index) =>
-      ffi.Pointer.fromAddress(address + ffi.sizeOf<ffi.Pointer>() * index);
-}
-
-extension FloatPointer on ffi.Pointer<ffi.Float> {
-  double get value {
-    return thermion_flutter_web_get_float(this, 0);
-  }
-
-  set value(double value) {
-    thermion_flutter_web_set_float(this, 0, value);
-  }
-
-  double operator [](int index) {
-    return this.elementAt(index).value;
-  }
-
-  void operator []=(int index, double value) {
-    this.elementAt(index).value = value;
-  }
-
-  ffi.Pointer<ffi.Float> elementAt(int index) =>
-      ffi.Pointer.fromAddress(address + ffi.sizeOf<ffi.Float>() * index);
-
-  Float32List asTypedList(int length) {
-    var list = Float32List(length);
-
-    for (int i = 0; i < length; i++) {
-      list[i] = this[i];
-    }
-    return list;
-  }
-}
-
-extension StringConversion on String {
-  ffi.Pointer<Utf8> toNativeUtf8({ffi.Allocator? allocator}) {
-    final units = utf8.encode(this);
-    final ffi.Pointer<ffi.Uint8> result =
-        allocator!<ffi.Uint8>(units.length + 1);
-    for (int i = 0; i < units.length; i++) {
-      result.elementAt(i).value = units[i];
-    }
-    result.elementAt(units.length).value = 0;
-    return result.cast();
-  }
-}
-
-extension StringUtf8Pointer on ffi.Pointer<Utf8> {
-  static int _length(ffi.Pointer<ffi.Uint8> codeUnits) {
-    var length = 0;
-    while (codeUnits[length] != 0) {
-      length++;
-    }
-    return length;
-  }
-
-  String toDartString({int? length}) {
-    final codeUnits = this.cast<ffi.Uint8>();
-    final list = <int>[];
-
-    if (length != null) {
-      RangeError.checkNotNegative(length, 'length');
-    } else {
-      length = _length(codeUnits);
-    }
-    for (int i = 0; i < length; i++) {
-      list.add(codeUnits.elementAt(i).value);
-    }
-    return utf8.decode(list);
-  }
-}
-
-extension DoublePointer on ffi.Pointer<ffi.Double> {
-  double get value {
-    return thermion_flutter_web_get_double(this, 0);
-  }
-
-  set value(double value) {
-    return thermion_flutter_web_set_double(this, 0, value);
-  }
-
-  Float64List asTypedList(int length) {
-    var list = Float64List(length);
-
-    for (int i = 0; i < length; i++) {
-      list[i] = elementAt(i).value;
-    }
-    return list;
-  }
-
-  double operator [](int index) {
-    return elementAt(index).value;
-  }
-
-  void operator []=(int index, double value) {
-    elementAt(index).value = value;
-  }
-
-  ffi.Pointer<ffi.Double> elementAt(int index) =>
-      ffi.Pointer.fromAddress(address + ffi.sizeOf<ffi.Double>() * index);
-}

thermion_dart/lib/thermion_dart/compatibility/web/ffi/compatibility_ffi.dart

@@ -1,118 +0,0 @@
-import 'dart:async';
-import 'dart:js_interop';
-import 'package:thermion_dart/thermion_dart/compatibility/web/ffi/interop.dart';
-
-import "allocator.dart";
-
-export "allocator.dart";
-export "thermion_dart.g.dart";
-
-export 'package:ffi/ffi.dart' hide StringUtf8Pointer, Utf8Pointer;
-export 'dart:ffi'
-    hide
-        Uint8Pointer,
-        FloatPointer,
-        DoublePointer,
-        Int32Pointer,
-        Int64Pointer,
-        PointerPointer,
-        Allocator;
-
-const allocator = Allocator();
-
-@AbiSpecificIntegerMapping({
-  Abi.androidArm: Uint8(),
-  Abi.androidArm64: Uint8(),
-  Abi.androidIA32: Int8(),
-  Abi.androidX64: Int8(),
-  Abi.androidRiscv64: Uint8(),
-  Abi.fuchsiaArm64: Uint8(),
-  Abi.fuchsiaX64: Int8(),
-  Abi.fuchsiaRiscv64: Uint8(),
-  Abi.iosArm: Int8(),
-  Abi.iosArm64: Int8(),
-  Abi.iosX64: Int8(),
-  Abi.linuxArm: Uint8(),
-  Abi.linuxArm64: Uint8(),
-  Abi.linuxIA32: Int8(),
-  Abi.linuxX64: Int8(),
-  Abi.linuxRiscv32: Uint8(),
-  Abi.linuxRiscv64: Uint8(),
-  Abi.macosArm64: Int8(),
-  Abi.macosX64: Int8(),
-  Abi.windowsArm64: Int8(),
-  Abi.windowsIA32: Int8(),
-  Abi.windowsX64: Int8(),
-})
-final class FooChar extends AbiSpecificInteger {
-  const FooChar();
-}
-
-class Compatibility {
-  final _foo = FooChar();
-}
-
-Future<void> withVoidCallback(
-    Function(Pointer<NativeFunction<Void Function()>>) func) async {
-  JSArray retVal = createVoidCallback();
-  var promise = retVal.toDart[0] as JSPromise<JSNumber>;
-  var fnPtrAddress = retVal.toDart[1] as JSNumber;
-  var fnPtr = Pointer<NativeFunction<Void Function()>>.fromAddress(
-      fnPtrAddress.toDartInt);
-  func(fnPtr);
-  await promise.toDart;
-}
-
-Future<int> withVoidPointerCallback(
-    void Function(Pointer<NativeFunction<Void Function(Pointer<Void>)>>)
-        func) async {
-  JSArray retVal = createVoidPointerCallback();
-  var promise = retVal.toDart[0] as JSPromise<JSNumber>;
-
-  var fnPtrAddress = retVal.toDart[1] as JSNumber;
-  var fnPtr = Pointer<NativeFunction<Void Function(Pointer<Void>)>>.fromAddress(
-      fnPtrAddress.toDartInt);
-  func(fnPtr);
-  final addr = await promise.toDart;
-  return addr.toDartInt;
-}
-
-Future<bool> withBoolCallback(
-    Function(Pointer<NativeFunction<Void Function(Bool)>>) func) async {
-  JSArray retVal = createBoolCallback();
-  var promise = retVal.toDart[0] as JSPromise<JSBoolean>;
-
-  var fnPtrAddress = retVal.toDart[1] as JSNumber;
-  var fnPtr = Pointer<NativeFunction<Void Function(Bool)>>.fromAddress(
-      fnPtrAddress.toDartInt);
-  func(fnPtr);
-  final addr = await promise.toDart;
-  return addr.toDart;
-}
-
-Future<int> withIntCallback(
-    Function(Pointer<NativeFunction<Void Function(Int32)>>) func) async {
-  JSArray retVal = createBoolCallback();
-  var promise = retVal.toDart[0] as JSPromise<JSNumber>;
-
-  var fnPtrAddress = retVal.toDart[1] as JSNumber;
-  var fnPtr = Pointer<NativeFunction<Void Function(Int32)>>.fromAddress(
-      fnPtrAddress.toDartInt);
-  func(fnPtr);
-  final addr = await promise.toDart;
-  return addr.toDartInt;
-}
-
-Future<String> withCharPtrCallback(
-    Function(Pointer<NativeFunction<Void Function(Pointer<Char>)>>)
-        func) async {
-  JSArray retVal = createVoidPointerCallback();
-  var promise = retVal.toDart[0] as JSPromise<JSNumber>;
-
-  var fnPtrAddress = retVal.toDart[1] as JSNumber;
-  var fnPtr = Pointer<NativeFunction<Void Function(Pointer<Char>)>>.fromAddress(
-      fnPtrAddress.toDartInt);
-  func(fnPtr);
-  final addr = await promise.toDart;
-  return Pointer<Utf8>.fromAddress(addr.toDartInt).toDartString();
-}

thermion_dart/lib/thermion_dart/compatibility/web/ffi/interop.dart

@@ -1,16 +0,0 @@
-import 'dart:js_interop';
-
-@JS()
-external JSArray createIntCallback();
-
-@JS()
-external JSArray createBoolCallback();
-
-@JS()
-external JSArray createVoidPointerCallback();
-
-@JS()
-external JSArray createVoidCallback();
-
-
-

thermion_dart/lib/thermion_dart/entities/abstract_gizmo.dart

@@ -1,3 +1,20 @@
+import 'package:thermion_dart/thermion_dart/thermion_viewer.dart';
+import 'package:vector_math/vector_math_64.dart';
 
+abstract class AbstractGizmo {
+  
+  bool get isVisible;
+  bool get isHovered;
 
+  Future translate(double transX, double transY);
 
+  void reset();
+
+  Future attach(ThermionEntity entity);
+
+  Future detach();
+
+  Stream<Aabb2> get boundingBox;
+
+  void checkHover(double x, double y);
+}

thermion_dart/lib/thermion_dart/entities/gizmo.dart

@@ -1,46 +1,68 @@
-
+import 'dart:async';
+import 'package:thermion_dart/thermion_dart/entities/abstract_gizmo.dart';
 import 'package:vector_math/vector_math_64.dart';
 import '../thermion_viewer.dart';
 
 class Gizmo extends AbstractGizmo {
   final ThermionEntity x;
-  Vector3 _x = Vector3(0.1, 0, 0);
   final ThermionEntity y;
-  Vector3 _y = Vector3(0.0, 0.1, 0);
   final ThermionEntity z;
-  Vector3 _z = Vector3(0.0, 0.0, 0.1);
+  final ThermionEntity center;
 
-  final ThermionViewer controller;
+  final ThermionViewer _viewer;
 
   ThermionEntity? _activeAxis;
   ThermionEntity? _activeEntity;
-  bool get isActive => _activeAxis != null;
+
+  bool _visible = false;
+  bool get isVisible => _visible;
+
+  bool _isHovered = false;
+  bool get isHovered => _isHovered;
 
   final Set<ThermionEntity> ignore;
 
-  Gizmo(this.x, this.y, this.z, this.controller,
+  Stream<Aabb2> get boundingBox => _boundingBoxController.stream;
+  final _boundingBoxController = StreamController<Aabb2>.broadcast();
+
+  Gizmo(this.x, this.y, this.z, this.center, this._viewer,
       {this.ignore = const <ThermionEntity>{}}) {
-    controller.pickResult.listen(_onPickResult);
+    _viewer.gizmoPickResult.listen(_onGizmoPickResult);
+    _viewer.pickResult.listen(_onPickResult);
   }
 
-  Future _reveal() async {
+  final _stopwatch = Stopwatch();
-    await controller.reveal(x, null);
-    await controller.reveal(y, null);
-    await controller.reveal(z, null);
-  }
 
-  void translate(double transX, double transY) async {
+  double _transX = 0.0;
-    late Vector3 vec;
+  double _transY = 0.0;
-    if (_activeAxis == x) {
+
-      vec = _x;
+  Future translate(double transX, double transY) async {
-    } else if (_activeAxis == y) {
+    if (!_stopwatch.isRunning) {
-      vec = _y;
+      _stopwatch.start();
-    } else if (_activeAxis == z) {
-      vec = _z;
     }
-    await controller.queuePositionUpdate(
+
-        _activeEntity!, transX * vec.x, -transY * vec.y, -transX * vec.z,
+    _transX += transX;
-        relative: true);
+    _transY += transY;
+
+    if (_stopwatch.elapsedMilliseconds < 16) {
+      return;
+    }
+
+    final axis = Vector3(_activeAxis == x ? 1.0 : 0.0,
+        _activeAxis == y ? 1.0 : 0.0, _activeAxis == z ? 1.0 : 0.0);
+
+    await _viewer.queueRelativePositionUpdateWorldAxis(
+        _activeEntity!,
+        _transX * _viewer.pixelRatio,
+        -_transY *
+            _viewer
+                .pixelRatio, // flip the sign because "up" in NDC Y axis is positive, but negative in Flutter
+        axis.x,
+        axis.y,
+        axis.z);
+    _transX = 0;
+    _transY = 0;
+    _stopwatch.reset();
   }
 
   void reset() {
@@ -48,32 +70,48 @@ class Gizmo extends AbstractGizmo {
   }
 
   void _onPickResult(FilamentPickResult result) async {
-    if (ignore.contains(result)) {
+    await attach(result.entity);
-      detach();
+  }
-      return;
+
-    }
+  void _onGizmoPickResult(FilamentPickResult result) async {
     if (result.entity == x || result.entity == y || result.entity == z) {
       _activeAxis = result.entity;
+      _isHovered = true;
+    } else if (result.entity == 0) {
+      _activeAxis = null;
+      _isHovered = false;
     } else {
-      attach(result.entity);
+      throw Exception("Unexpected gizmo pick result");
     }
   }
 
-  void attach(ThermionEntity entity) async {
+  Future attach(ThermionEntity entity) async {
     _activeAxis = null;
+    if (entity == _activeEntity) {
+      return;
+    }
+    if (entity == center) {
+      _activeEntity = null;
+      return;
+    }
+    _visible = true;
+
+    if (_activeEntity != null) {
+      await _viewer.removeStencilHighlight(_activeEntity!);
+    }
     _activeEntity = entity;
-    await _reveal();
+    await _viewer.setGizmoVisibility(true);
-    await controller.setParent(x, entity);
+    await _viewer.setParent(center, entity, preserveScaling: false);
-    await controller.setParent(y, entity);
+    _boundingBoxController.sink.add(await _viewer.getViewportBoundingBox(x));
-    await controller.setParent(z, entity);
+
   }
 
-  void detach() async {
+  Future detach() async {
-    await controller.setParent(x, 0);
+    await _viewer.setGizmoVisibility(false);
-    await controller.setParent(y, 0);
+  }
-    await controller.setParent(z, 0);
+
-    await controller.hide(x, null);
+  @override
-    await controller.hide(y, null);
+  void checkHover(double x, double y) {
-    await controller.hide(z, null);
+    _viewer.pickGizmo(x.toInt(), y.toInt());
   }
 }

thermion_dart/lib/thermion_dart/scene.dart

@@ -1,48 +1,233 @@
+import 'dart:convert';
 import 'package:thermion_dart/thermion_dart/thermion_viewer.dart';
-import 'dart:async';
+import 'package:vector_math/vector_math_64.dart';
 
-///
+class SceneV2 {
-/// For now, this class just holds the entities that have been loaded (though not necessarily visible in the Filament Scene).
+  final Map<String, AssetInfo> assets;
-///
+  final List<LightInfo> lights;
-abstract class Scene {
+  List<CameraInfo> cameras;
-  ///
+  final List<EntityInfo> entities;
-  /// The last entity clicked/tapped in the viewport (internally, the result of calling pick);
+  EnvironmentInfo? environment;
-  ThermionEntity? selected;
 
-  ///
+  SceneV2({
-  /// A Stream updated whenever an entity is added/removed from the scene.
+    Map<String, AssetInfo>? assets,
-  ///
+    List<LightInfo>? lights,
-  Stream<bool> get onUpdated;
+    List<CameraInfo>? cameras,
+    List<EntityInfo>? entities,
+    this.environment,
+  })  : assets = assets ?? {},
+        lights = lights ?? [],
+        cameras = cameras ?? [],
+        entities = entities ?? [];
 
-  ///
+  void addAsset(String uri, AssetType type) {
-  /// A Stream containing every ThermionEntity added to the scene (i.e. via [loadGlb], [loadGltf] or [addLight]).
+    assets[uri] = AssetInfo(uri: uri, type: type);
-  /// This is provided for convenience so you can set listeners in front-end widgets that can respond to entity loads without manually passing around the ThermionEntity returned from those methods.
+  }
-  ///
-  Stream<ThermionEntity> get onLoad;
 
-  ///
+  void addLight(LightInfo light) {
-  /// A Stream containing every ThermionEntity removed from the scene (i.e. via [removeEntity], [clearEntities], [removeLight] or [clearLights]).
+    lights.add(light);
+  }
 
-  Stream<ThermionEntity> get onUnload;
+  void clearAssets() {
+    assets.clear();
+  }
 
-  ///
+  void clearLights() {
-  /// Lists all light entities currently loaded (not necessarily active in the scene). Does not account for instances.
+    lights.clear();
-  ///
+  }
-  Iterable<ThermionEntity> listLights();
 
-  ///
+  void setCamera(Matrix4 modelMatrix, Matrix4 projectionMatrix) {
-  /// Lists all entities currently loaded (not necessarily active in the scene). Does not account for instances.
+    var camera = cameras.firstWhere((cam) => cam.isActive);
-  ///
+    camera.modelMatrix = modelMatrix;
-  Iterable<ThermionEntity> listEntities();
+    camera.projectionMatrix = projectionMatrix;
+  }
 
-  ///
+  void addEntity(String assetUri, Matrix4 transform) {
-  /// Attach the gizmo to the specified entity.
+    if (assets.containsKey(assetUri)) {
-  ///
+      entities.add(EntityInfo(assetUri: assetUri, transform: transform));
-  void select(ThermionEntity entity);
+    } else {
+      throw Exception('Asset not found: $assetUri');
+    }
+  }
 
-  ///
+  void setEnvironment(String? skyboxUri, String? iblUri) {
-  ///
+    environment = EnvironmentInfo(skyboxUri: skyboxUri, iblUri: iblUri);
-  ///
+  }
-  void registerEntity(ThermionEntity entity);
 
-}
+  Map<String, dynamic> toJson() => {
+        'assets': assets.map((key, value) => MapEntry(key, value.toJson())),
+        'lights': lights.map((light) => light.toJson()).toList(),
+        'cameras': cameras.map((camera) => camera.toJson()),
+        'entities': entities.map((entity) => entity.toJson()).toList(),
+        'environment': environment?.toJson(),
+      };
+
+  String toJsonString() => jsonEncode(toJson());
+
+  static SceneV2 fromJson(Map<String, dynamic> json) {
+    return SceneV2(
+      assets: (json['assets'] as Map<String, dynamic>).map(
+        (key, value) => MapEntry(key, AssetInfo.fromJson(value)),
+      ),
+      lights: (json['lights'] as List)
+          .map((light) => LightInfo.fromJson(light))
+          .toList(),
+      cameras: json['cameras'].map((camera) => CameraInfo.fromJson),
+      entities: (json['entities'] as List)
+          .map((entity) => EntityInfo.fromJson(entity))
+          .toList(),
+      environment: json['environment'] != null
+          ? EnvironmentInfo.fromJson(json['environment'])
+          : null,
+    );
+  }
+
+  static SceneV2 fromJsonString(String jsonString) =>
+      fromJson(jsonDecode(jsonString));
+}
+
+class AssetInfo {
+  final String uri;
+  final AssetType type;
+
+  AssetInfo({required this.uri, required this.type});
+
+  Map<String, dynamic> toJson() => {
+        'uri': uri,
+        'type': type.toString().split('.').last,
+      };
+
+  static AssetInfo fromJson(Map<String, dynamic> json) {
+    return AssetInfo(
+      uri: json['uri'],
+      type: AssetType.values.firstWhere(
+          (e) => e.toString().split('.').last == json['type'],
+          orElse: () => AssetType.glb),
+    );
+  }
+}
+
+enum AssetType { glb, gltf, geometryPrimitive }
+
+class LightInfo {
+  final LightType type;
+  final Vector3 position;
+  final Vector3 direction;
+  final Color color;
+  final double intensity;
+
+  LightInfo({
+    required this.type,
+    required this.position,
+    required this.direction,
+    required this.color,
+    required this.intensity,
+  });
+
+  Map<String, dynamic> toJson() => {
+        'type': type.toString().split('.').last,
+        'position': [position.x, position.y, position.z],
+        'direction': [direction.x, direction.y, direction.z],
+        'color': color.toJson(),
+        'intensity': intensity,
+      };
+
+  static LightInfo fromJson(Map<String, dynamic> json) {
+    return LightInfo(
+      type: LightType.values.firstWhere((e) => e.name == json['type']),
+      position: Vector3.array(json['position'].cast<double>()),
+      direction: Vector3.array(json['direction'].cast<double>()),
+      color: Color.fromJson(json['color']),
+      intensity: json['intensity'],
+    );
+  }
+}
+
+class CameraInfo {
+  final bool isActive;
+  Matrix4 modelMatrix;
+  Matrix4 projectionMatrix;
+
+  CameraInfo(
+      {required this.isActive,
+      required this.modelMatrix,
+      required this.projectionMatrix});
+
+  Map<String, dynamic> toJson() => {
+        'modelMatrix': modelMatrix.storage,
+        'projectionMatrix': projectionMatrix.storage,
+        'isActive': isActive,
+      };
+
+  static CameraInfo fromJson(Map<String, dynamic> json) {
+    return CameraInfo(
+        modelMatrix:
+            Matrix4.fromFloat64List(json['modelMatrix'].cast<double>()),
+        projectionMatrix:
+            Matrix4.fromFloat64List(json['modelMatrix'].cast<double>()),
+        isActive: json["isActive"]);
+  }
+}
+
+class EntityInfo {
+  final String assetUri;
+  final Matrix4 transform;
+
+  EntityInfo({required this.assetUri, required this.transform});
+
+  Map<String, dynamic> toJson() => {
+        'assetUri': assetUri,
+        'transform': transform.storage,
+      };
+
+  static EntityInfo fromJson(Map<String, dynamic> json) {
+    return EntityInfo(
+      assetUri: json['assetUri'],
+      transform: Matrix4.fromList(List<double>.from(json['transform'])),
+    );
+  }
+}
+
+class EnvironmentInfo {
+  final String? skyboxUri;
+  final String? iblUri;
+
+  EnvironmentInfo({this.skyboxUri, this.iblUri});
+
+  Map<String, dynamic> toJson() => {
+        'skyboxUri': skyboxUri,
+        'iblUri': iblUri,
+      };
+
+  static EnvironmentInfo fromJson(Map<String, dynamic> json) {
+    return EnvironmentInfo(
+      skyboxUri: json['skyboxUri'],
+      iblUri: json['iblUri'],
+    );
+  }
+}
+
+class Color {
+  final double r;
+  final double g;
+  final double b;
+  final double a;
+
+  Color({required this.r, required this.g, required this.b, this.a = 1.0});
+
+  Map<String, dynamic> toJson() => {
+        'r': r,
+        'g': g,
+        'b': b,
+        'a': a,
+      };
+
+  static Color fromJson(Map<String, dynamic> json) {
+    return Color(
+      r: json['r'],
+      g: json['g'],
+      b: json['b'],
+      a: json['a'],
+    );
+  }
+}

thermion_dart/lib/thermion_dart/scene_impl.dart

@@ -1,125 +0,0 @@
-import 'dart:async';
-import 'package:thermion_dart/thermion_dart/scene.dart';
-import 'thermion_viewer.dart';
-
-///
-/// For now, this class just holds the entities that have been loaded (though not necessarily visible in the Filament Scene).
-///
-class SceneImpl extends Scene {
-  ThermionViewer controller;
-
-  SceneImpl(this.controller);
-
-  @override
-  ThermionEntity? selected;
-
-  final _onUpdatedController = StreamController<bool>.broadcast();
-  @override
-  Stream<bool> get onUpdated => _onUpdatedController.stream;
-
-  final _onLoadController = StreamController<ThermionEntity>.broadcast();
-  @override
-  Stream<ThermionEntity> get onLoad => _onLoadController.stream;
-
-  final _onUnloadController = StreamController<ThermionEntity>.broadcast();
-  @override
-  Stream<ThermionEntity> get onUnload => _onUnloadController.stream;
-
-  final _lights = <ThermionEntity>{};
-  final _entities = <ThermionEntity>{};
-
-  void registerLight(ThermionEntity entity) {
-    _lights.add(entity);
-    _onLoadController.sink.add(entity);
-    _onUpdatedController.add(true);
-  }
-
-  void unregisterLight(ThermionEntity entity) async {
-    var children = await controller.getChildEntities(entity, true);
-    if (selected == entity || children.contains(selected)) {
-      selected = null;
-      controller.gizmo?.detach();
-    }
-    _lights.remove(entity);
-    _onUnloadController.add(entity);
-    _onUpdatedController.add(true);
-  }
-
-  void unregisterEntity(ThermionEntity entity) async {
-    var children = await controller.getChildEntities(entity, true);
-    if (selected == entity || children.contains(selected)) {
-      selected = null;
-
-      controller.gizmo?.detach();
-    }
-    _entities.remove(entity);
-    _onUnloadController.add(entity);
-    _onUpdatedController.add(true);
-  }
-
-  void registerEntity(ThermionEntity entity) {
-    _entities.add(entity);
-    _onLoadController.sink.add(entity);
-    _onUpdatedController.add(true);
-  }
-
-  void clearLights() {
-    for (final light in _lights) {
-      if (selected == light) {
-        selected = null;
-        controller.gizmo?.detach();
-      }
-      _onUnloadController.add(light);
-    }
-
-    _lights.clear();
-    _onUpdatedController.add(true);
-  }
-
-  void clearEntities() {
-    for (final entity in _entities) {
-      if (selected == entity) {
-        selected = null;
-        controller.gizmo?.detach();
-      }
-      _onUnloadController.add(entity);
-    }
-    _entities.clear();
-    _onUpdatedController.add(true);
-  }
-
-  ///
-  /// Lists all entities currently loaded (not necessarily active in the scene).
-  ///
-  Iterable<ThermionEntity> listLights() {
-    return _lights;
-  }
-
-  @override
-  Iterable<ThermionEntity> listEntities() {
-    return _entities;
-  }
-
-  void registerSelected(ThermionEntity entity) {
-    selected = entity;
-    _onUpdatedController.add(true);
-  }
-
-  void unregisterSelected() {
-    selected = null;
-    _onUpdatedController.add(true);
-  }
-
-  @override
-  void select(ThermionEntity entity) {
-    selected = entity;
-    controller.gizmo?.attach(entity);
-    _onUpdatedController.add(true);
-  }
-
-  Future dispose() async {
-    await _onLoadController.close();
-    await _onUnloadController.close();
-    await _onUpdatedController.close();
-  }
-}

thermion_dart/lib/thermion_dart/thermion_viewer.dart

@@ -1,751 +1,6 @@
-import 'dart:math';
+library thermion_viewer; 
 
-import 'package:thermion_dart/thermion_dart/scene.dart';
+export 'viewer/thermion_viewer_base.dart';
-import 'package:vector_math/vector_math_64.dart';
+export 'viewer/thermion_viewer_stub.dart'
-import 'dart:async';
+    if (dart.library.io) 'viewer/ffi/thermion_viewer_ffi.dart'
-import 'package:animation_tools_dart/animation_tools_dart.dart';
+    if (dart.library.js_interop) 'viewer/web/thermion_viewer_wasm.dart';
-
-// a handle that can be safely passed back to the rendering layer to manipulate an Entity
-typedef ThermionEntity = int;
-
-// "picking" means clicking/tapping on the viewport, and unprojecting the X/Y coordinate to determine whether any renderable entities were present at those coordinates.
-typedef FilamentPickResult = ({ThermionEntity entity, double x, double y});
-
-enum LightType {
-  SUN, //!< Directional light that also draws a sun's disk in the sky.
-  DIRECTIONAL, //!< Directional light, emits light in a given direction.
-  POINT, //!< Point light, emits light from a position, in all directions.
-  FOCUSED_SPOT, //!< Physically correct spot light.
-  SPOT,
-}
-
-enum ShadowType { 
-    PCF,        //!< percentage-closer filtered shadows (default)
-    VSM,        //!< variance shadows
-    DPCF,       //!< PCF with contact hardening simulation
-    PCSS,       //!< PCF with soft shadows and contact hardening
-}
-
-// copied from filament/backened/DriverEnums.h
-enum PrimitiveType {
-  // don't change the enums values (made to match GL)
-  POINTS, //!< points
-  LINES, //!< lines
-  UNUSED1,
-  LINE_STRIP, //!< line strip
-  TRIANGLES, //!< triangles
-  TRIANGLE_STRIP, //!< triangle strip
-}
-
-enum ToneMapper { ACES, FILMIC, LINEAR }
-
-// see filament Manipulator.h for more details
-enum ManipulatorMode { ORBIT, MAP, FREE_FLIGHT }
-
-class TextureDetails {
-  final int textureId;
-
-  // both width and height are in physical, not logical pixels
-  final int width;
-  final int height;
-
-  TextureDetails(
-      {required this.textureId, required this.width, required this.height});
-}
-
-abstract class ThermionViewer {
-  
-  Future<bool> get initialized;
-
-  ///
-  /// The result(s) of calling [pick] (see below).
-  /// This may be a broadcast stream, so you should ensure you have subscribed to this stream before calling [pick].
-  /// If [pick] is called without an active subscription to this stream, the results will be silently discarded.
-  ///
-  Stream<FilamentPickResult> get pickResult;
-
-  ///
-  /// Whether the controller is currently rendering at [framerate].
-  ///
-  bool get rendering;
-
-  ///
-  /// Set to true to continuously render the scene at the framerate specified by [setFrameRate] (60 fps by default).
-  ///
-  Future setRendering(bool render);
-
-  ///
-  /// Render a single frame.
-  ///
-  Future render();
-
-  ///
-  /// Sets the framerate for continuous rendering when [setRendering] is enabled.
-  ///
-  Future setFrameRate(int framerate);
-
-  ///
-  /// Destroys/disposes the viewer (including the entire scene). You cannot use the viewer after calling this method.
-  ///
-  Future dispose();
-
-  ///
-  /// Set the background image to [path] (which should have a file extension .png, .jpg, or .ktx).
-  /// This will be rendered at the maximum depth (i.e. behind all other objects including the skybox).
-  /// If [fillHeight] is false, the image will be rendered at its original size. Note this may cause issues with pixel density so be sure to specify the correct resolution
-  /// If [fillHeight] is true, the image will be stretched/compressed to fit the height of the viewport.
-  ///
-  Future setBackgroundImage(String path, {bool fillHeight = false});
-
-  ///
-  /// Moves the background image to the relative offset from the origin (bottom-left) specified by [x] and [y].
-  /// If [clamp] is true, the image cannot be positioned outside the bounds of the viewport.
-  ///
-  Future setBackgroundImagePosition(double x, double y, {bool clamp = false});
-
-  ///
-  /// Removes the background image.
-  ///
-  Future clearBackgroundImage();
-
-  ///
-  /// Sets the color for the background plane (positioned at the maximum depth, i.e. behind all other objects including the skybox).
-  ///
-  Future setBackgroundColor(double r, double g, double b, double alpha);
-
-  ///
-  /// Load a skybox from [skyboxPath] (which must be a .ktx file)
-  ///
-  Future loadSkybox(String skyboxPath);
-
-  ///
-  /// Removes the skybox from the scene.
-  ///
-  Future removeSkybox();
-
-  ///
-  /// Loads an image-based light from the specified path at the given intensity.
-  /// Only one IBL can be active at any given time; if an IBL has already been loaded, it will be replaced.
-  ///
-  Future loadIbl(String lightingPath, {double intensity = 30000});
-
-  ///
-  /// Rotates the IBL & skybox.
-  ///
-  Future rotateIbl(Matrix3 rotation);
-
-  ///
-  /// Removes the image-based light from the scene.
-  ///
-  Future removeIbl();
-
-  ///
-  /// Add a light to the scene.
-  /// See LightManager.h for details
-  /// Note that [sunAngularRadius] is in degrees,
-  /// whereas [spotLightConeInner] and [spotLightConeOuter] are in radians
-  ///
-  Future<ThermionEntity> addLight(
-      LightType type,
-      double colour,
-      double intensity,
-      double posX,
-      double posY,
-      double posZ,
-      double dirX,
-      double dirY,
-      double dirZ,
-      {double falloffRadius = 1.0,
-      double spotLightConeInner = pi / 8,
-      double spotLightConeOuter = pi / 4,
-      double sunAngularRadius = 0.545,
-      double sunHaloSize = 10.0,
-      double sunHaloFallof = 80.0,
-      bool castShadows = true});
-
-  Future removeLight(ThermionEntity light);
-
-  ///
-  /// Remove all lights (excluding IBL) from the scene.
-  ///
-  Future clearLights();
-
-  ///
-  /// Load the .glb asset at the given path and insert into the scene.
-  ///
-  Future<ThermionEntity> loadGlb(String path, {int numInstances = 1});
-
-  ///
-  /// Create a new instance of [entity].
-  ///
-  Future<ThermionEntity> createInstance(ThermionEntity entity);
-
-  ///
-  /// Returns the number of instances of the asset associated with [entity].
-  ///
-  Future<int> getInstanceCount(ThermionEntity entity);
-
-  ///
-  /// Returns all instances of [entity].
-  ///
-  Future<List<ThermionEntity>> getInstances(ThermionEntity entity);
-
-  ///
-  /// Load the .gltf asset at the given path and insert into the scene.
-  /// [relativeResourcePath] is the folder path where the glTF resources are stored;
-  /// this is usually the parent directory of the .gltf file itself.
-  ///
-  Future<ThermionEntity> loadGltf(String path, String relativeResourcePath,
-      {bool force = false});
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future panStart(double x, double y);
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future panUpdate(double x, double y);
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future panEnd();
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future rotateStart(double x, double y);
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future rotateUpdate(double x, double y);
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future rotateEnd();
-
-  ///
-  /// Set the weights for all morph targets in [entity] to [weights].
-  /// Note that [weights] must contain values for ALL morph targets, but no exception will be thrown if you don't do so (you'll just get incorrect results).
-  /// If you only want to set one value, set all others to zero (check [getMorphTargetNames] if you need the get a list of all morph targets).
-  /// IMPORTANT - this accepts the actual ThermionEntity with the relevant morph targets (unlike [getMorphTargetNames], which uses the parent entity and the child mesh name).
-  /// Use [getChildEntityByName] if you are setting the weights for a child mesh.
-  ///
-  Future setMorphTargetWeights(ThermionEntity entity, List<double> weights);
-
-  ///
-  /// Gets the names of all morph targets for the child renderable [childEntity] under [entity].
-  ///
-  Future<List<String>> getMorphTargetNames(
-      ThermionEntity entity, ThermionEntity childEntity);
-
-  ///
-  /// Gets the names of all bones for the armature at [skinIndex] under the specified [entity].
-  ///
-  Future<List<String>> getBoneNames(ThermionEntity entity, {int skinIndex = 0});
-
-  ///
-  /// Gets the names of all glTF animations embedded in the specified entity.
-  ///
-  Future<List<String>> getAnimationNames(ThermionEntity entity);
-
-  ///
-  /// Returns the length (in seconds) of the animation at the given index.
-  ///
-  Future<double> getAnimationDuration(
-      ThermionEntity entity, int animationIndex);
-
-  ///
-  /// Animate the morph targets in [entity]. See [MorphTargetAnimation] for an explanation as to how to construct the animation frame data.
-  /// This method will check the morph target names specified in [animation] against the morph target names that actually exist exist under [meshName] in [entity],
-  /// throwing an exception if any cannot be found.
-  /// It is permissible for [animation] to omit any targets that do exist under [meshName]; these simply won't be animated.
-  ///
-  Future setMorphAnimationData(
-      ThermionEntity entity, MorphAnimationData animation,
-      {List<String>? targetMeshNames});
-
-  ///
-  /// Clear all current morph animations for [entity]. 
-  ///
-  Future clearMorphAnimationData(
-      ThermionEntity entity);
-
-  ///
-  /// Resets all bones in the given entity to their rest pose.
-  /// This should be done before every call to addBoneAnimation.
-  ///
-  Future resetBones(ThermionEntity entity);
-
-  ///
-  /// Enqueues and plays the [animation] for the specified bone(s).
-  /// By default, frame data is interpreted as being in *parent* bone space;
-  /// a 45 degree around Y means the bone will rotate 45 degrees around the
-  /// Y axis of the parent bone *in its current orientation*.
-  /// (i.e NOT the parent bone's rest position!).
-  /// Currently, only [Space.ParentBone] and [Space.Model] are supported; if you want
-  /// to transform to another space, you will need to do so manually.
-  ///
-  /// [fadeInInSecs]/[fadeOutInSecs]/[maxDelta] are used to cross-fade between
-  /// the current active glTF animation ("animation1") and the animation you
-  /// set via this method ("animation2"). The bone orientations will be
-  /// linearly interpolated between animation1 and animation2; at time 0,
-  /// the orientation will be 100% animation1, at time [fadeInInSecs], the
-  /// animation will be ((1 - maxDelta) * animation1) + (maxDelta * animation2).
-  /// This will be applied in reverse after [fadeOutInSecs].
-  ///
-  ///
-  Future addBoneAnimation(ThermionEntity entity, BoneAnimationData animation,
-      {int skinIndex = 0,
-      double fadeInInSecs = 0.0,
-      double fadeOutInSecs = 0.0,
-      double maxDelta = 1.0});
-
-  ///
-  /// Gets the entity representing the bone at [boneIndex]/[skinIndex].
-  /// The returned entity is only intended for use with [getWorldTransform].
-  ///
-  Future<ThermionEntity> getBone(ThermionEntity parent, int boneIndex,
-      {int skinIndex = 0});
-
-  ///
-  /// Gets the local (relative to parent) transform for [entity].
-  ///
-  Future<Matrix4> getLocalTransform(ThermionEntity entity);
-
-  ///
-  /// Gets the world transform for [entity].
-  ///
-  Future<Matrix4> getWorldTransform(ThermionEntity entity);
-
-  ///
-  /// Gets the inverse bind (pose) matrix for the bone.
-  /// Note that [parent] must be the ThermionEntity returned by [loadGlb/loadGltf], not any other method ([getChildEntity] etc).
-  /// This is because all joint information is internally stored with the parent entity.
-  ///
-  Future<Matrix4> getInverseBindMatrix(ThermionEntity parent, int boneIndex,
-      {int skinIndex = 0});
-
-  ///
-  /// Sets the transform (relative to its parent) for [entity].
-  ///
-  Future setTransform(ThermionEntity entity, Matrix4 transform);
-
-  ///
-  /// Updates the bone matrices for [entity] (which must be the ThermionEntity
-  /// returned by [loadGlb/loadGltf]).
-  /// Under the hood, this just calls [updateBoneMatrices] on the Animator
-  /// instance of the relevant FilamentInstance (which uses the local
-  /// bone transform and the inverse bind matrix to set the bone matrix).
-  ///
-  Future updateBoneMatrices(ThermionEntity entity);
-
-  ///
-  /// Directly set the bone matrix for the bone at the given index.
-  /// Don't call this manually unless you know what you're doing.
-  ///
-  Future setBoneTransform(
-      ThermionEntity entity, int boneIndex, Matrix4 transform,
-      {int skinIndex = 0});
-
-  ///
-  /// Removes/destroys the specified entity from the scene.
-  /// [entity] will no longer be a valid handle after this method is called; ensure you immediately discard all references once this method is complete.
-  ///
-  Future removeEntity(ThermionEntity entity);
-
-  ///
-  /// Removes/destroys all renderable entities from the scene (including cameras).
-  /// All [ThermionEntity] handles will no longer be valid after this method is called; ensure you immediately discard all references to all entities once this method is complete.
-  ///
-  Future clearEntities();
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future zoomBegin();
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future zoomUpdate(double x, double y, double z);
-
-  ///
-  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
-  ///
-  Future zoomEnd();
-
-  ///
-  /// Schedules the glTF animation at [index] in [entity] to start playing on the next frame.
-  ///
-  Future playAnimation(ThermionEntity entity, int index,
-      {bool loop = false,
-      bool reverse = false,
-      bool replaceActive = true,
-      double crossfade = 0.0});
-
-  ///
-  /// Schedules the glTF animation at [index] in [entity] to start playing on the next frame.
-  ///
-  Future playAnimationByName(ThermionEntity entity, String name,
-      {bool loop = false,
-      bool reverse = false,
-      bool replaceActive = true,
-      double crossfade = 0.0});
-
-  Future setAnimationFrame(
-      ThermionEntity entity, int index, int animationFrame);
-
-  Future stopAnimation(ThermionEntity entity, int animationIndex);
-  Future stopAnimationByName(ThermionEntity entity, String name);
-
-  ///
-  /// Sets the current scene camera to the glTF camera under [name] in [entity].
-  ///
-  Future setCamera(ThermionEntity entity, String? name);
-
-  ///
-  /// Sets the current scene camera to the main camera (which is always available and added to every scene by default).
-  ///
-  Future setMainCamera();
-
-  ///
-  /// Returns the entity associated with the main camera.
-  ///
-  Future<ThermionEntity> getMainCamera();
-
-  ///
-  /// Sets the current scene camera to the glTF camera under [name] in [entity].
-  ///
-  Future setCameraFov(double degrees, double width, double height);
-
-  ///
-  /// Sets the tone mapping (requires postprocessing).
-  ///
-  Future setToneMapping(ToneMapper mapper);
-
-  ///
-  /// Sets the strength of the bloom.
-  ///
-  Future setBloom(double bloom);
-
-  ///
-  /// Sets the focal length of the camera. Default value is 28.0.
-  ///
-  Future setCameraFocalLength(double focalLength);
-
-  ///
-  /// Sets the distance (in world units) to the near/far planes for the active camera. Default values are 0.05/1000.0. See Camera.h for details.
-  ///
-  Future setCameraCulling(double near, double far);
-
-  ///
-  /// Get the distance (in world units) to the near culling plane for the active camera.
-  ///
-  Future<double> getCameraCullingNear();
-
-  ///
-  /// Get the distance (in world units) to the far culling plane for the active camera.
-  ///
-  Future<double> getCameraCullingFar();
-
-  ///
-  /// Sets the focus distance for the camera.
-  ///
-  Future setCameraFocusDistance(double focusDistance);
-
-  ///
-  /// Get the camera position in world space.
-  ///
-  Future<Vector3> getCameraPosition();
-
-  ///
-  /// Get the camera's model matrix.
-  ///
-  Future<Matrix4> getCameraModelMatrix();
-
-  ///
-  /// Get the camera's view matrix. See Camera.h for more details.
-  ///
-  Future<Matrix4> getCameraViewMatrix();
-
-  ///
-  /// Get the camera's projection matrix. See Camera.h for more details.
-  ///
-  Future<Matrix4> getCameraProjectionMatrix();
-
-  ///
-  /// Get the camera's culling projection matrix. See Camera.h for more details.
-  ///
-  Future<Matrix4> getCameraCullingProjectionMatrix();
-
-  ///
-  /// Get the camera's culling frustum in world space. Returns a (vector_math) [Frustum] instance where plane0-plane6 define the left, right, bottom, top, far and near planes respectively.
-  /// See Camera.h and (filament) Frustum.h for more details.
-  ///
-  Future<Frustum> getCameraFrustum();
-
-  ///
-  /// Set the camera position in world space. Note this is not persistent - any viewport navigation will reset the camera transform.
-  ///
-  Future setCameraPosition(double x, double y, double z);
-
-  ///
-  /// Get the camera rotation matrix.
-  ///
-  Future<Matrix3> getCameraRotation();
-
-  ///
-  /// Repositions the camera to the last vertex of the bounding box of [entity], looking at the penultimate vertex.
-  ///
-  Future moveCameraToAsset(ThermionEntity entity);
-
-  ///
-  /// Enables/disables frustum culling. Currently we don't expose a method for manipulating the camera projection/culling matrices so this is your only option to deal with unwanted near/far clipping.
-  ///
-  Future setViewFrustumCulling(bool enabled);
-
-  ///
-  /// Sets the camera exposure.
-  ///
-  Future setCameraExposure(
-      double aperture, double shutterSpeed, double sensitivity);
-
-  ///
-  /// Rotate the camera by [rads] around the given axis. Note this is not persistent - any viewport navigation will reset the camera transform.
-  ///
-  Future setCameraRotation(Quaternion quaternion);
-
-  ///
-  /// Sets the camera model matrix.
-  ///
-  Future setCameraModelMatrix(List<double> matrix);
-
-  ///
-  /// Sets the `baseColorFactor` property for the material at index [materialIndex] in [entity] under node [meshName] to [color].
-  ///
-  Future setMaterialColor(ThermionEntity entity, String meshName,
-      int materialIndex, double r, double g, double b, double a);
-
-  ///
-  /// Scale [entity] to fit within the unit cube.
-  ///
-  Future transformToUnitCube(ThermionEntity entity);
-
-  ///
-  /// Directly sets the world space position for [entity] to the given coordinates, skipping all collision detection.
-  ///
-  Future setPosition(ThermionEntity entity, double x, double y, double z);
-
-  ///
-  /// Directly sets the scale for [entity], skipping all collision detection.
-  ///
-  Future setScale(ThermionEntity entity, double scale);
-
-  ///
-  /// Directly sets the rotation for [entity] to [rads] around the axis {x,y,z}, skipping all collision detection.
-  ///
-  Future setRotation(
-      ThermionEntity entity, double rads, double x, double y, double z);
-
-  ///
-  /// Queues an update to the worldspace position for [entity] to {x,y,z}.
-  /// The actual update will occur on the next frame, and will be subject to collision detection.
-  ///
-  Future queuePositionUpdate(
-      ThermionEntity entity, double x, double y, double z,
-      {bool relative = false});
-
-  ///
-  /// Queues an update to the worldspace rotation for [entity].
-  /// The actual update will occur on the next frame, and will be subject to collision detection.
-  ///
-  Future queueRotationUpdate(
-      ThermionEntity entity, double rads, double x, double y, double z,
-      {bool relative = false});
-
-  ///
-  /// Same as [queueRotationUpdate].
-  ///
-  Future queueRotationUpdateQuat(ThermionEntity entity, Quaternion quat,
-      {bool relative = false});
-
-  ///
-  /// Enable/disable postprocessing (disabled by default).
-  ///
-  Future setPostProcessing(bool enabled);
-
-  ///
-  /// Enable/disable shadows (disabled by default).
-  ///
-  Future setShadowsEnabled(bool enabled);
-
-  ///
-  /// Set shadow type.
-  ///
-  Future setShadowType(ShadowType shadowType);
-
-  ///
-  /// Set soft shadow options (ShadowType DPCF and PCSS)
-  ///
-  Future setSoftShadowOptions(double penumbraScale, double penumbraRatioScale);
-
-  ///
-  /// Set antialiasing options.
-  ///
-  Future setAntiAliasing(bool msaa, bool fxaa, bool taa);
-
-  ///
-  /// Sets the rotation for [entity] to the specified quaternion.
-  ///
-  Future setRotationQuat(ThermionEntity entity, Quaternion rotation);
-
-  ///
-  /// Reveal the node [meshName] under [entity]. Only applicable if [hide] had previously been called; this is a no-op otherwise.
-  ///
-  Future reveal(ThermionEntity entity, String? meshName);
-
-  ///
-  /// If [meshName] is provided, hide the node [meshName] under [entity], otherwise hide the root node for [entity].
-  /// The entity still exists in memory, but is no longer being rendered into the scene. Call [reveal] to re-commence rendering.
-  ///
-  Future hide(ThermionEntity entity, String? meshName);
-
-  ///
-  /// Used to select the entity in the scene at the given viewport coordinates.
-  /// Called by `FilamentGestureDetector` on a mouse/finger down event. You probably don't want to call this yourself.
-  /// This is asynchronous and will require 2-3 frames to complete - subscribe to the [pickResult] stream to receive the results of this method.
-  /// [x] and [y] must be in local logical coordinates (i.e. where 0,0 is at top-left of the ThermionWidget).
-  ///
-  void pick(int x, int y);
-
-  ///
-  /// Retrieves the name assigned to the given ThermionEntity (usually corresponds to the glTF mesh name).
-  ///
-  String? getNameForEntity(ThermionEntity entity);
-
-  ///
-  /// Sets the options for manipulating the camera via the viewport.
-  /// ManipulatorMode.FREE_FLIGHT and ManipulatorMode.MAP are currently unsupported and will throw an exception.
-  ///
-  Future setCameraManipulatorOptions(
-      {ManipulatorMode mode = ManipulatorMode.ORBIT,
-      double orbitSpeedX = 0.01,
-      double orbitSpeedY = 0.01,
-      double zoomSpeed = 0.01});
-
-  ///
-  /// Returns all child entities under [parent].
-  ///
-  Future<List<ThermionEntity>> getChildEntities(
-      ThermionEntity parent, bool renderableOnly);
-
-  ///
-  /// Finds the child entity named [childName] associated with the given parent.
-  /// Usually, [parent] will be the return value from [loadGlb]/[loadGltf] and [childName] will be the name of a node/mesh.
-  ///
-  Future<ThermionEntity> getChildEntity(
-      ThermionEntity parent, String childName);
-
-  ///
-  /// List the name of all child entities under the given entity.
-  ///
-  Future<List<String>> getChildEntityNames(ThermionEntity entity,
-      {bool renderableOnly = true});
-
-  ///
-  /// If [recording] is set to true, each frame the framebuffer/texture will be written to /tmp/output_*.png.
-  /// This will impact performance; handle with care.
-  ///
-  Future setRecording(bool recording);
-
-  ///
-  /// Sets the output directory where recorded PNGs will be placed.
-  ///
-  Future setRecordingOutputDirectory(String outputDirectory);
-
-  ///
-  /// An [entity] will only be animatable after an animation component is attached.
-  /// Any calls to [playAnimation]/[setBoneAnimation]/[setMorphAnimation] will have no visual effect until [addAnimationComponent] has been called on the instance.
-  ///
-  Future addAnimationComponent(ThermionEntity entity);
-
-  ///
-  /// Removes an animation component from [entity].
-  ///
-  Future removeAnimationComponent(ThermionEntity entity);
-
-  ///
-  /// Makes [entity] collidable.
-  /// This allows you to call [testCollisions] with any other entity ("entity B") to see if [entity] has collided with entity B. The callback will be invoked if so.
-  /// Alternatively, if [affectsTransform] is true and this entity collides with another entity, any queued position updates to the latter entity will be ignored.
-  ///
-  Future addCollisionComponent(ThermionEntity entity,
-      {void Function(int entityId1, int entityId2)? callback,
-      bool affectsTransform = false});
-
-  ///
-  /// Removes the collision component from [entity], meaning this will no longer be tested when [testCollisions] or [queuePositionUpdate] is called with another entity.
-  ///
-  Future removeCollisionComponent(ThermionEntity entity);
-
-  ///
-  /// Creates a (renderable) entity with the specified geometry and adds to the scene.
-  ///
-  Future createGeometry(List<double> vertices, List<int> indices,
-      {String? materialPath,
-      PrimitiveType primitiveType = PrimitiveType.TRIANGLES});
-
-  ///
-  /// Gets the parent transform of [child].
-  ///
-  Future<ThermionEntity?> getParent(ThermionEntity child);
-
-  ///
-  /// Sets the parent transform of [child] to [parent].
-  ///
-  Future setParent(ThermionEntity child, ThermionEntity parent);
-
-  ///
-  /// Test all collidable entities against this entity to see if any have collided.
-  /// This method returns void; the relevant callback passed to [addCollisionComponent] will be fired if a collision is detected.
-  ///
-  Future testCollisions(ThermionEntity entity);
-
-  ///
-  /// Sets the draw priority for the given entity. See RenderableManager.h for more details.
-  ///
-  Future setPriority(ThermionEntity entityId, int priority);
-
-  ///
-  /// The Scene holds all loaded entities/lights.
-  ///
-  Scene get scene;
-
-  ///
-  ///
-  ///
-  AbstractGizmo? get gizmo;
-
-  ///
-  /// Register a callback to be invoked when this viewer is disposed.
-  ///
-  void onDispose(Future Function() callback);
-  
-}
-
-abstract class AbstractGizmo {
-  bool get isActive;
-
-  void translate(double transX, double transY);
-
-  void reset();
-
-  void attach(ThermionEntity entity);
-
-  void detach();
-}

thermion_dart/lib/thermion_dart/utils/dart_resources.dart

@@ -1,6 +1,8 @@
 import 'dart:ffi';
 import 'dart:io';
-import '../compatibility/compatibility.dart';
+
+import 'package:ffi/ffi.dart';
+import 'package:thermion_dart/thermion_dart/viewer/ffi/thermion_dart.g.dart';
 
 class DartResourceLoader {
   static final _assets = <int, Pointer>{};

thermion_dart/lib/thermion_dart/utils/geometry.dart

@@ -0,0 +1,334 @@
+import 'dart:math';
+import 'dart:typed_data';
+import 'package:thermion_dart/thermion_dart/viewer/shared_types/geometry.dart';
+import 'package:thermion_dart/thermion_dart/viewer/thermion_viewer_base.dart';
+
+class GeometryHelper {
+  static Geometry sphere({bool normals = true, bool uvs = true}) {
+    int latitudeBands = 20;
+    int longitudeBands = 20;
+
+    List<double> verticesList = [];
+    List<double> normalsList = [];
+    List<double> uvsList = [];
+    List<int> indices = [];
+
+    for (int latNumber = 0; latNumber <= latitudeBands; latNumber++) {
+      double theta = latNumber * pi / latitudeBands;
+      double sinTheta = sin(theta);
+      double cosTheta = cos(theta);
+
+      for (int longNumber = 0; longNumber <= longitudeBands; longNumber++) {
+        double phi = longNumber * 2 * pi / longitudeBands;
+        double sinPhi = sin(phi);
+        double cosPhi = cos(phi);
+
+        double x = cosPhi * sinTheta;
+        double y = cosTheta;
+        double z = sinPhi * sinTheta;
+
+        verticesList.addAll([x, y, z]);
+        normalsList.addAll([x, y, z]);
+        
+        uvsList.addAll([longNumber / longitudeBands, latNumber / latitudeBands]);
+      }
+    }
+
+    for (int latNumber = 0; latNumber < latitudeBands; latNumber++) {
+      for (int longNumber = 0; longNumber < longitudeBands; longNumber++) {
+        int first = (latNumber * (longitudeBands + 1)) + longNumber;
+        int second = first + longitudeBands + 1;
+
+        indices.addAll([first, second, first + 1, second, second + 1, first + 1]);
+      }
+    }
+
+    Float32List vertices = Float32List.fromList(verticesList);
+    Float32List? _normals = normals ? Float32List.fromList(normalsList) : null;
+    Float32List? _uvs = uvs ? Float32List.fromList(uvsList) : null;
+
+    return Geometry(vertices, indices, normals: _normals, uvs: _uvs);
+  }
+
+static Geometry cube({bool normals = true, bool uvs = true}) {
+  final vertices = Float32List.fromList([
+    // Front face
+    -1, -1, 1,
+    1, -1, 1,
+    1, 1, 1,
+    -1, 1, 1,
+
+    // Back face
+    -1, -1, -1,
+    -1, 1, -1,
+    1, 1, -1,
+    1, -1, -1,
+
+    // Top face
+    -1, 1, -1,
+    -1, 1, 1,
+    1, 1, 1,
+    1, 1, -1,
+
+    // Bottom face
+    -1, -1, -1,
+    1, -1, -1,
+    1, -1, 1,
+    -1, -1, 1,
+
+    // Right face
+    1, -1, -1,
+    1, 1, -1,
+    1, 1, 1,
+    1, -1, 1,
+
+    // Left face
+    -1, -1, -1,
+    -1, -1, 1,
+    -1, 1, 1,
+    -1, 1, -1,
+  ]);
+
+  final _normals = normals ? Float32List.fromList([
+    // Front face
+    0, 0, 1,
+    0, 0, 1,
+    0, 0, 1,
+    0, 0, 1,
+
+    // Back face
+    0, 0, -1,
+    0, 0, -1,
+    0, 0, -1,
+    0, 0, -1,
+
+    // Top face
+    0, 1, 0,
+    0, 1, 0,
+    0, 1, 0,
+    0, 1, 0,
+
+    // Bottom face
+    0, -1, 0,
+    0, -1, 0,
+    0, -1, 0,
+    0, -1, 0,
+
+    // Right face
+    1, 0, 0,
+    1, 0, 0,
+    1, 0, 0,
+    1, 0, 0,
+
+    // Left face
+    -1, 0, 0,
+    -1, 0, 0,
+    -1, 0, 0,
+    -1, 0, 0,
+  ]) : null;
+
+  final _uvs = uvs ? Float32List.fromList([
+    // Front face
+    1/3, 1/3,
+    2/3, 1/3,
+    2/3, 2/3,
+    1/3, 2/3,
+
+    // Back face
+    2/3, 2/3,
+    2/3, 1,
+    1, 1,
+    1, 2/3,
+
+    // Top face
+    1/3, 0,
+    1/3, 1/3,
+    2/3, 1/3,
+    2/3, 0,
+
+    // Bottom face
+    1/3, 2/3,
+    2/3, 2/3,
+    2/3, 1,
+    1/3, 1,
+
+    // Right face
+    2/3, 1/3,
+    2/3, 2/3,
+    1, 2/3,
+    1, 1/3,
+
+    // Left face
+    0, 1/3,
+    1/3, 1/3,
+    1/3, 2/3,
+    0, 2/3,
+  ]) : null;
+
+  final indices = [
+    // Front face
+    0, 1, 2, 0, 2, 3,
+    // Back face
+    4, 5, 6, 4, 6, 7,
+    // Top face
+    8, 9, 10, 8, 10, 11,
+    // Bottom face
+    12, 13, 14, 12, 14, 15,
+    // Right face
+    16, 17, 18, 16, 18, 19,
+    // Left face
+    20, 21, 22, 20, 22, 23
+  ];
+  return Geometry(vertices, indices, normals: _normals, uvs: _uvs);
+}
+
+  static Geometry cylinder({double radius = 1.0, double length = 1.0, bool normals = true, bool uvs = true }) {
+    int segments = 32;
+    List<double> verticesList = [];
+    List<double> normalsList = [];
+    List<double> uvsList = [];
+    List<int> indices = [];
+
+    // Create vertices, normals, and UVs
+    for (int i = 0; i <= segments; i++) {
+      double theta = i * 2 * pi / segments;
+      double x = radius * cos(theta);
+      double z = radius * sin(theta);
+
+      // Top circle
+      verticesList.addAll([x, length / 2, z]);
+      normalsList.addAll([x / radius, 0, z / radius]);
+      uvsList.addAll([i / segments, 1]);
+
+      // Bottom circle
+      verticesList.addAll([x, -length / 2, z]);
+      normalsList.addAll([x / radius, 0, z / radius]);
+      uvsList.addAll([i / segments, 0]);
+    }
+
+    // Create indices
+    for (int i = 0; i < segments; i++) {
+      int topFirst = i * 2;
+      int topSecond = (i + 1) * 2;
+      int bottomFirst = topFirst + 1;
+      int bottomSecond = topSecond + 1;
+
+      // Top face (counter-clockwise)
+      indices.addAll([segments * 2, topSecond, topFirst]);
+      // Bottom face (counter-clockwise when viewed from below)
+      indices.addAll([segments * 2 + 1, bottomFirst, bottomSecond]);
+      // Side faces (counter-clockwise)
+      indices.addAll([topFirst, bottomFirst, topSecond]);
+      indices.addAll([bottomFirst, bottomSecond, topSecond]);
+    }
+
+    // Add center vertices, normals, and UVs for top and bottom faces
+    verticesList.addAll([0, length / 2, 0]); // Top center
+    normalsList.addAll([0, 1, 0]);
+    uvsList.addAll([0.5, 0.5]); // Center of top face
+
+    verticesList.addAll([0, -length / 2, 0]); // Bottom center
+    normalsList.addAll([0, -1, 0]);
+    uvsList.addAll([0.5, 0.5]); // Center of bottom face
+
+    // Add top and bottom face normals and UVs
+    for (int i = 0; i <= segments; i++) {
+      normalsList.addAll([0, 1, 0]); // Top face normal
+      normalsList.addAll([0, -1, 0]); // Bottom face normal
+      
+      double u = 0.5 + 0.5 * cos(i * 2 * pi / segments);
+      double v = 0.5 + 0.5 * sin(i * 2 * pi / segments);
+      uvsList.addAll([u, v]); // Top face UV
+      uvsList.addAll([u, v]); // Bottom face UV
+    }
+
+    Float32List vertices = Float32List.fromList(verticesList);
+    Float32List? _normals = normals ? Float32List.fromList(normalsList) : null;
+    Float32List? _uvs = uvs ? Float32List.fromList(uvsList) : null;
+
+    return Geometry(vertices, indices, normals: _normals, uvs: _uvs);
+  }
+
+  static Geometry conic({double radius = 1.0, double length = 1.0, bool normals = true, bool uvs = true}) {
+    int segments = 32;
+    List<double> verticesList = [];
+    List<double> normalsList = [];
+    List<double> uvsList = [];
+    List<int> indices = [];
+
+    // Create vertices, normals, and UVs
+    for (int i = 0; i <= segments; i++) {
+      double theta = i * 2 * pi / segments;
+      double x = radius * cos(theta);
+      double z = radius * sin(theta);
+
+      // Base circle
+      verticesList.addAll([x, 0, z]);
+
+      // Calculate normal for the side
+      double nx = x / sqrt(x * x + length * length);
+      double nz = z / sqrt(z * z + length * length);
+      double ny = radius / sqrt(radius * radius + length * length);
+      normalsList.addAll([nx, ny, nz]);
+
+      // UV coordinates
+      uvsList.addAll([i / segments, 0]);
+    }
+    // Apex
+    verticesList.addAll([0, length, 0]);
+    normalsList.addAll([0, 1, 0]); // Normal at apex points straight up
+    uvsList.addAll([0.5, 1]); // UV for apex
+
+    // Create indices
+    for (int i = 0; i < segments; i++) {
+      // Base face (fixed to counterclockwise)
+      indices.addAll([segments + 1, i + 1, i]);
+      // Side faces (already correct)
+      indices.addAll([i, segments, i + 1]);
+    }
+
+    // Add base face normals and UVs
+    for (int i = 0; i <= segments; i++) {
+      normalsList.addAll([0, -1, 0]); // Base face normal
+      double u = 0.5 + 0.5 * cos(i * 2 * pi / segments);
+      double v = 0.5 + 0.5 * sin(i * 2 * pi / segments);
+      uvsList.addAll([u, v]); // Base face UV
+    }
+
+    Float32List vertices = Float32List.fromList(verticesList);
+    Float32List? _normals = normals ? Float32List.fromList(normalsList) : null;
+    Float32List? _uvs = uvs ? Float32List.fromList(uvsList) : null;
+
+    return Geometry(vertices, indices, normals: _normals, uvs: _uvs);
+  }
+
+  static Geometry plane({double width = 1.0, double height = 1.0, bool normals = true, bool uvs = true}) {
+    Float32List vertices = Float32List.fromList([
+      -width / 2, 0, -height / 2,
+      width / 2, 0, -height / 2,
+      width / 2, 0, height / 2,
+      -width / 2, 0, height / 2,
+    ]);
+
+    Float32List? _normals = normals ? Float32List.fromList([
+      0, 1, 0,
+      0, 1, 0,
+      0, 1, 0,
+      0, 1, 0,
+    ]) : null;
+
+    Float32List? _uvs = uvs ? Float32List.fromList([
+      0, 0,
+      1, 0,
+      1, 1,
+      0, 1,
+    ]) : null;
+
+    List<int> indices = [
+      0, 2, 1,
+      0, 3, 2,
+    ];
+
+    return Geometry(vertices, indices, normals: _normals, uvs: _uvs);
+  }
+}

thermion_dart/lib/thermion_dart/utils/light_options.dart

@@ -1,29 +0,0 @@
-import 'package:vector_math/vector_math_64.dart' as v;
-
-class LightOptions {
-  String? iblPath;
-  double iblIntensity;
-  int directionalType;
-  double directionalColor;
-  double directionalIntensity;
-  bool directionalCastShadows;
-  late v.Vector3 directionalPosition;
-  late v.Vector3 directionalDirection;
-
-  LightOptions(
-      {required this.iblPath,
-      required this.iblIntensity,
-      required this.directionalType,
-      required this.directionalColor,
-      required this.directionalIntensity,
-      required this.directionalCastShadows,
-      v.Vector3? directionalDirection,
-      v.Vector3? directionalPosition}) {
-    this.directionalDirection = directionalDirection == null
-        ? v.Vector3(0, -1, 0)
-        : directionalDirection;
-    this.directionalPosition = directionalPosition == null
-        ? v.Vector3(0, 100, 0)
-        : directionalPosition;
-  }
-}

thermion_dart/lib/thermion_dart/utils/matrix.dart

@@ -0,0 +1,38 @@
+// Helper function to convert double4x4 to Matrix4
+import 'package:thermion_dart/thermion_dart/viewer/ffi/thermion_dart.g.dart';
+import 'package:vector_math/vector_math_64.dart';
+import 'dart:ffi';
+
+Matrix4 double4x4ToMatrix4(double4x4 mat) {
+  return Matrix4.fromList([
+    mat.col1[0],
+    mat.col1[1],
+    mat.col1[2],
+    mat.col1[3],
+    mat.col2[0],
+    mat.col2[1],
+    mat.col2[2],
+    mat.col2[3],
+    mat.col3[0],
+    mat.col3[1],
+    mat.col3[2],
+    mat.col3[3],
+    mat.col4[0],
+    mat.col4[1],
+    mat.col4[2],
+    mat.col4[3],
+  ]);
+}
+
+double4x4 matrix4ToDouble4x4(Matrix4 mat) {
+  final out = Struct.create<double4x4>();
+
+  for (int i = 0; i < 4; i++) {
+    out.col1[i] = mat.storage[i];
+    out.col2[i] = mat.storage[i + 4];
+    out.col3[i] = mat.storage[i + 8];
+    out.col4[i] = mat.storage[i + 12];
+  }
+
+  return out;
+}

thermion_dart/lib/thermion_dart/utils/using_pointer.dart

@@ -1,10 +0,0 @@
-import 'dart:ffi';
-
-import 'package:ffi/ffi.dart';
-
-final allocator = calloc;
-
-void using(Pointer ptr, Future Function(Pointer ptr) function) async {
-  await function.call(ptr);
-  allocator.free(ptr);
-}

thermion_dart/lib/thermion_dart/viewer/events.dart

@@ -0,0 +1,86 @@
+import 'package:thermion_dart/thermion_dart/viewer/shared_types/entities.dart';
+import 'shared_types/shared_types.dart';
+
+///
+/// To ensure we can easily store/recreate a particular, [ThermionViewer] will raise an event whenever an
+/// entity is added/removed.
+///
+enum EventType { EntityAdded, EntityRemoved, EntityHidden, EntityRevealed, ClearLights }
+
+///
+/// An "entity added" event must provide sufficient detail to enable that asset to be reloaded in future.
+/// This requires a bit more legwork because entities may be lights (direct/indirect), geometry or gltf.
+///
+enum EntityType { Geometry, Gltf, DirectLight, IBL }
+
+class SceneUpdateEvent {
+  late final ThermionEntity? entity;
+  late final EventType eventType;
+
+  EntityType get addedEntityType {
+    if (_directLight != null) {
+      return EntityType.DirectLight;
+    } else if (_ibl != null) {
+      return EntityType.IBL;
+    } else if (_gltf != null) {
+      return EntityType.Gltf;
+    } else if (_geometry != null) {
+      return EntityType.Geometry;
+    } else {
+      throw Exception("Unknown entity type");
+    }
+  }
+
+  DirectLight? _directLight;
+  IBL? _ibl;
+  GLTF? _gltf;
+  Geometry? _geometry;
+
+  SceneUpdateEvent.remove(this.entity) {
+    this.eventType = EventType.EntityRemoved;
+  }
+
+  SceneUpdateEvent.reveal(this.entity) {
+    this.eventType = EventType.EntityRevealed;
+  }
+
+  SceneUpdateEvent.hide(this.entity) {
+    this.eventType = EventType.EntityHidden;
+  }
+
+  SceneUpdateEvent.addDirectLight(this.entity, this._directLight) {
+    this.eventType = EventType.EntityAdded;
+  }
+
+  SceneUpdateEvent.addIbl(this.entity, this._ibl) {
+    this.eventType = EventType.EntityAdded;
+  }
+
+  SceneUpdateEvent.addGltf(this.entity, this._gltf) {
+    this.eventType = EventType.EntityAdded;
+  }
+
+  SceneUpdateEvent.addGeometry(this.entity, this._geometry) {
+    this.eventType = EventType.EntityAdded;
+  }
+
+  SceneUpdateEvent.clearLights() {
+    this.eventType = EventType.ClearLights;
+  }
+
+  DirectLight getDirectLight() {
+    return _directLight!;
+  }
+
+  IBL getAsIBL() {
+    return _ibl!;
+  }
+
+  GLTF getAsGLTF() {
+    return _gltf!;
+  }
+
+  Geometry getAsGeometry() {
+    return _geometry!;
+  }
+}

thermion_dart/lib/thermion_dart/viewer/ffi/callbacks.dart

@@ -8,6 +8,11 @@ export 'thermion_dart.g.dart';
 
 final allocator = calloc;
 
+void using(Pointer ptr, Future Function(Pointer ptr) function) async {
+  await function.call(ptr);
+  allocator.free(ptr);
+}
+
 Future<void> withVoidCallback(
     Function(Pointer<NativeFunction<Void Function()>>) func) async {
   final completer = Completer();
@@ -21,16 +26,16 @@ Future<void> withVoidCallback(
   nativeCallable.close();
 }
 
-Future<int> withVoidPointerCallback(
+Future<int> withPointerCallback<T extends NativeType>(
-    Function(Pointer<NativeFunction<Void Function(Pointer<Void>)>>)
+    Function(Pointer<NativeFunction<Void Function(Pointer<T>)>>)
         func) async {
-  final completer = Completer<Pointer<Void>>();
+  final completer = Completer<Pointer<T>>();
   // ignore: prefer_function_declarations_over_variables
-  void Function(Pointer<Void>) callback = (Pointer<Void> ptr) {
+  void Function(Pointer<NativeType>) callback = (Pointer<NativeType> ptr) {
-    completer.complete(ptr);
+    completer.complete(ptr.cast<T>());
   };
   final nativeCallable =
-      NativeCallable<Void Function(Pointer<Void>)>.listener(callback);
+      NativeCallable<Void Function(Pointer<NativeType>)>.listener(callback);
   func.call(nativeCallable.nativeFunction);
   var ptr = await completer.future;
   nativeCallable.close();
@@ -82,4 +87,3 @@ Future<String> withCharPtrCallback(
   return completer.future;
 }
 
-class Compatibility {}

thermion_dart/lib/thermion_dart/viewer/ffi/camera_ffi.dart

@@ -0,0 +1,22 @@
+import 'dart:ffi';
+
+import 'package:thermion_dart/thermion_dart/utils/matrix.dart';
+import 'package:thermion_dart/thermion_dart/viewer/ffi/thermion_dart.g.dart';
+import 'package:thermion_dart/thermion_dart/viewer/shared_types/camera.dart';
+import 'package:vector_math/vector_math_64.dart';
+
+class ThermionFFICamera extends Camera {
+  final Pointer<TCamera> pointer;
+
+  ThermionFFICamera(this.pointer);
+
+  @override
+  Future setProjectionMatrixWithCulling(Matrix4 projectionMatrix,
+      double near, double far) async {
+    Camera_setCustomProjectionWithCulling(
+        pointer,
+        matrix4ToDouble4x4(projectionMatrix),
+        near,
+        far);
+  }
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/camera.dart

@@ -0,0 +1,8 @@
+import 'package:vector_math/vector_math_64.dart';
+
+abstract class Camera {
+
+  Future setProjectionMatrixWithCulling(Matrix4 projectionMatrix, double near, double far);
+  
+}
+

thermion_dart/lib/thermion_dart/viewer/shared_types/entities.dart

@@ -0,0 +1,11 @@
+library;
+
+export 'geometry.dart';
+export 'gltf.dart';
+
+export 'light_options.dart';
+
+// a handle that can be safely passed back to the rendering layer to manipulate an Entity
+typedef ThermionEntity = int;
+
+

thermion_dart/lib/thermion_dart/viewer/shared_types/geometry.dart

@@ -0,0 +1,32 @@
+import 'dart:typed_data';
+
+import 'package:thermion_dart/thermion_dart/viewer/thermion_viewer_base.dart';
+
+class Geometry {
+  final Float32List vertices;
+  final Uint16List indices;
+  final Float32List normals;
+  final Float32List uvs;
+  final PrimitiveType primitiveType;
+
+  Geometry(
+    this.vertices,
+    List<int> indices, {
+    Float32List? normals,
+    Float32List? uvs,
+    this.primitiveType = PrimitiveType.TRIANGLES,
+  })  : indices = Uint16List.fromList(indices),
+        normals = normals ?? Float32List(0),
+        uvs = uvs ?? Float32List(0) {
+    assert(this.uvs.length == 0 || this.uvs.length == (vertices.length ~/ 3) * 2);
+  }
+
+  void scale(double factor) {
+    for (int i = 0; i < vertices.length; i++) {
+      vertices[i] = vertices[i] * factor;
+    }
+  }
+
+  bool get hasNormals => normals.isNotEmpty;
+  bool get hasUVs => uvs.isNotEmpty;
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/gltf.dart

@@ -0,0 +1,6 @@
+class GLTF {
+  final String uri;
+  final int numInstances;
+
+  GLTF(this.uri, this.numInstances);
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/light.dart

@@ -0,0 +1,7 @@
+enum LightType {
+  SUN, //!< Directional light that also draws a sun's disk in the sky.
+  DIRECTIONAL, //!< Directional light, emits light in a given direction.
+  POINT, //!< Point light, emits light from a position, in all directions.
+  FOCUSED_SPOT, //!< Physically correct spot light.
+  SPOT,
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/light_options.dart

@@ -0,0 +1,98 @@
+import 'dart:math';
+import 'package:vector_math/vector_math_64.dart' as v;
+import 'package:vector_math/vector_math_64.dart';
+import 'light.dart';
+
+class IBL {
+  String? iblPath;
+  final double iblIntensity;
+
+  IBL(this.iblIntensity);
+}
+
+class DirectLight {
+  final LightType type;
+  final double color;
+  final double intensity;
+  final bool castShadows;
+  late final v.Vector3 position;
+  late final v.Vector3 direction;
+  final double falloffRadius;
+  final double spotLightConeInner;
+  final double spotLightConeOuter;
+  final double sunAngularRadius;
+  final double sunHaloSize;
+  final double sunHaloFallof;
+
+  DirectLight({
+    required this.type,
+    required this.color,
+    required this.intensity,
+    this.castShadows = false,
+    required this.direction,
+    required this.position,
+    this.falloffRadius = 1.0,
+    this.spotLightConeInner = pi / 8,
+    this.spotLightConeOuter = pi / 4,
+    this.sunAngularRadius = 0.545,
+    this.sunHaloSize = 10.0,
+    this.sunHaloFallof = 80.0,
+  });
+
+  DirectLight.point({
+    double color = 6500,
+    double intensity = 100000,
+    bool castShadows = false,
+    Vector3? position,
+    double falloffRadius = 1.0,
+  }) : this(
+    type: LightType.POINT,
+    color: color,
+    intensity: intensity,
+    castShadows: castShadows,
+    position: position ?? Vector3(0, 1, 0),
+    direction: Vector3.zero(),
+    falloffRadius: falloffRadius,
+  );
+
+  DirectLight.sun({
+    double color = 6500,
+    double intensity = 100000,
+    bool castShadows = true,
+    Vector3? direction,
+    double sunAngularRadius = 0.545,
+    double sunHaloSize = 10.0,
+    double sunHaloFalloff = 80.0,
+  }) : this(
+    type: LightType.DIRECTIONAL,
+    color: color,
+    intensity: intensity,
+    castShadows: castShadows,
+    position: Vector3(0, 0, 0),  
+    direction: direction ?? Vector3(0, -1, 0),
+    sunAngularRadius: sunAngularRadius,
+    sunHaloSize: sunHaloSize,
+    sunHaloFallof: sunHaloFalloff,
+  );
+
+  DirectLight.spot({
+    double color = 6500,
+    double intensity = 100000,
+    bool castShadows = true,
+    Vector3? position,
+    Vector3? direction,
+    double falloffRadius = 1.0,
+    double spotLightConeInner = pi / 8,
+    double spotLightConeOuter = pi / 4,
+  }) : this(
+    type: LightType.SPOT,
+    color: color,
+    intensity: intensity,
+    castShadows: castShadows,
+    position: position ?? Vector3(0, 1, 0),
+    direction: direction ?? Vector3(0, -1, 0),
+    falloffRadius: falloffRadius,
+    spotLightConeInner: spotLightConeInner,
+    spotLightConeOuter: spotLightConeOuter,
+  );
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/manipulator.dart

@@ -0,0 +1,4 @@
+// see filament Manipulator.h for more details
+@Deprecated(
+    "This is used  the native pointer manipulator Prefer ThermionGestureHandler instead")
+enum ManipulatorMode { ORBIT, MAP, FREE_FLIGHT }

thermion_dart/lib/thermion_dart/viewer/shared_types/material.dart

@@ -0,0 +1,6 @@
+abstract class MaterialInstance {
+  Future setDepthWriteEnabled(bool enabled);
+  Future setDepthCullingEnabled(bool enabled);
+}
+
+enum AlphaMode { OPAQUE, MASK, BLEND }

thermion_dart/lib/thermion_dart/viewer/shared_types/pick_result.dart

@@ -0,0 +1,5 @@
+// "picking" means clicking/tapping on the viewport, and unprojecting the X/Y coordinate to determine whether any renderable entities were present at those coordinates.
+import 'package:thermion_dart/thermion_dart/viewer/shared_types/shared_types.dart';
+
+typedef FilamentPickResult = ({ThermionEntity entity, double x, double y});
+typedef ThermionPickResult = FilamentPickResult;

thermion_dart/lib/thermion_dart/viewer/shared_types/primitive.dart

@@ -0,0 +1,10 @@
+// copied from filament/backened/DriverEnums.h
+enum PrimitiveType {
+  // don't change the enums values (made to match GL)
+  POINTS, //!< points
+  LINES, //!< lines
+  UNUSED1,
+  LINE_STRIP, //!< line strip
+  TRIANGLES, //!< triangles
+  TRIANGLE_STRIP, //!< triangle strip
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/shadow.dart

@@ -0,0 +1,6 @@
+enum ShadowType {
+  PCF, //!< percentage-closer filtered shadows (default)
+  VSM, //!< variance shadows
+  DPCF, //!< PCF with contact hardening simulation
+  PCSS, //!< PCF with soft shadows and contact hardening
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/shared_types.dart

@@ -0,0 +1,12 @@
+library shared_types;
+
+export 'material.dart';
+export 'texture.dart';
+export 'entities.dart';
+export 'light.dart';
+export 'shadow.dart';
+export 'manipulator.dart';
+export 'pick_result.dart';
+export 'primitive.dart';
+export 'texture_details.dart';
+export 'tone_mapper.dart';

thermion_dart/lib/thermion_dart/viewer/shared_types/texture.dart

@@ -0,0 +1,3 @@
+abstract class ThermionTexture {
+  
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/texture_details.dart

@@ -0,0 +1,14 @@
+///
+/// This represents the backing "surface" that we render into.
+/// "Texture" here is a misnomer as it is only a render target texture on certain platforms.
+/// 
+class TextureDetails {
+  final int textureId;
+
+  // both width and height are in physical, not logical pixels
+  final int width;
+  final int height;
+
+  TextureDetails(
+      {required this.textureId, required this.width, required this.height});
+}

thermion_dart/lib/thermion_dart/viewer/shared_types/tone_mapper.dart

@@ -0,0 +1 @@
+enum ToneMapper { ACES, FILMIC, LINEAR }

thermion_dart/lib/thermion_dart/viewer/thermion_viewer_base.dart

@@ -0,0 +1,963 @@
+import 'package:thermion_dart/thermion_dart/viewer/events.dart';
+import 'package:thermion_dart/thermion_dart/viewer/shared_types/camera.dart';
+
+import 'shared_types/shared_types.dart';
+export 'shared_types/shared_types.dart';
+
+import 'dart:math';
+import 'dart:typed_data';
+import 'package:thermion_dart/thermion_dart/entities/abstract_gizmo.dart';
+import 'package:vector_math/vector_math_64.dart';
+import 'dart:async';
+import 'package:animation_tools_dart/animation_tools_dart.dart';
+
+const double kNear = 0.05;
+const double kFar = 1000.0;
+const double kFocalLength = 28.0;
+
+abstract class ThermionViewer {
+  ///
+  /// A Future that resolves when the underlying rendering context has been successfully created.
+  ///
+  Future<bool> get initialized;
+
+  ///
+  /// The current dimensions of the viewport (in physical pixels).
+  ///
+  var viewportDimensions = (0.0, 0.0);
+
+  ///
+  /// The current ratio of logical to physical pixels.
+  ///
+  late double pixelRatio;
+
+  ///
+  /// The result(s) of calling [pick] (see below).
+  /// This may be a broadcast stream, so you should ensure you have subscribed to this stream before calling [pick].
+  /// If [pick] is called without an active subscription to this stream, the results will be silently discarded.
+  ///
+  Stream<FilamentPickResult> get pickResult;
+
+  ///
+  /// The result(s) of calling [pickGizmo] (see below).
+  ///
+  Stream<FilamentPickResult> get gizmoPickResult;
+
+  ///
+  /// A Stream containing entities added/removed to/from to the scene.
+  ///
+  Stream<SceneUpdateEvent> get sceneUpdated;
+
+  ///
+  /// Whether the controller is currently rendering at [framerate].
+  ///
+  bool get rendering;
+
+  ///
+  /// Set to true to continuously render the scene at the framerate specified by [setFrameRate] (60 fps by default).
+  ///
+  Future setRendering(bool render);
+
+  ///
+  /// Render a single frame immediately.
+  ///
+  Future render();
+
+  ///
+  /// Requests a single frame to be rendered. This is only intended to be used internally.
+  ///
+  void requestFrame();
+
+  ///
+  /// Render a single frame and copy the pixel buffer to [out].
+  ///
+  Future<Uint8List> capture();
+
+  ///
+  /// Sets the framerate for continuous rendering when [setRendering] is enabled.
+  ///
+  Future setFrameRate(int framerate);
+
+  ///
+  /// Destroys/disposes the viewer (including the entire scene). You cannot use the viewer after calling this method.
+  ///
+  Future dispose();
+
+  ///
+  /// Set the background image to [path] (which should have a file extension .png, .jpg, or .ktx).
+  /// This will be rendered at the maximum depth (i.e. behind all other objects including the skybox).
+  /// If [fillHeight] is false, the image will be rendered at its original size. Note this may cause issues with pixel density so be sure to specify the correct resolution
+  /// If [fillHeight] is true, the image will be stretched/compressed to fit the height of the viewport.
+  ///
+  Future setBackgroundImage(String path, {bool fillHeight = false});
+
+  ///
+  /// Moves the background image to the relative offset from the origin (bottom-left) specified by [x] and [y].
+  /// If [clamp] is true, the image cannot be positioned outside the bounds of the viewport.
+  ///
+  Future setBackgroundImagePosition(double x, double y, {bool clamp = false});
+
+  ///
+  /// Removes the background image.
+  ///
+  Future clearBackgroundImage();
+
+  ///
+  /// Sets the color for the background plane (positioned at the maximum depth, i.e. behind all other objects including the skybox).
+  ///
+  Future setBackgroundColor(double r, double g, double b, double alpha);
+
+  ///
+  /// Load a skybox from [skyboxPath] (which must be a .ktx file)
+  ///
+  Future loadSkybox(String skyboxPath);
+
+  ///
+  /// Removes the skybox from the scene.
+  ///
+  Future removeSkybox();
+
+  ///
+  /// Creates an indirect light by loading the reflections/irradiance from the KTX file.
+  /// Only one indirect light can be active at any given time; if an indirect light has already been loaded, it will be replaced.
+  ///
+  Future loadIbl(String lightingPath, {double intensity = 30000});
+
+  ///
+  /// Creates a indirect light with the given color.
+  /// Only one indirect light can be active at any given time; if an indirect light has already been loaded, it will be replaced.
+  ///
+  Future createIbl(double r, double g, double b, double intensity);
+
+  ///
+  /// Rotates the IBL & skybox.
+  ///
+  Future rotateIbl(Matrix3 rotation);
+
+  ///
+  /// Removes the image-based light from the scene.
+  ///
+  Future removeIbl();
+
+  ///
+  /// Add a light to the scene.
+  /// See LightManager.h for details
+  /// Note that [sunAngularRadius] is in degrees,
+  /// whereas [spotLightConeInner] and [spotLightConeOuter] are in radians
+  ///
+  @Deprecated(
+      "This will be removed in future versions. Use addDirectLight instead.")
+  Future<ThermionEntity> addLight(
+      LightType type,
+      double colour,
+      double intensity,
+      double posX,
+      double posY,
+      double posZ,
+      double dirX,
+      double dirY,
+      double dirZ,
+      {double falloffRadius = 1.0,
+      double spotLightConeInner = pi / 8,
+      double spotLightConeOuter = pi / 4,
+      double sunAngularRadius = 0.545,
+      double sunHaloSize = 10.0,
+      double sunHaloFallof = 80.0,
+      bool castShadows = true});
+
+  ///
+  /// Adds a direct light to the scene.
+  /// See LightManager.h for details
+  /// Note that [sunAngularRadius] is in degrees,
+  /// whereas [spotLightConeInner] and [spotLightConeOuter] are in radians
+  ///
+  Future<ThermionEntity> addDirectLight(DirectLight light);
+
+  ///
+  /// Remove a light from the scene.
+  ///
+  Future removeLight(ThermionEntity light);
+
+  ///
+  /// Remove all lights (excluding IBL) from the scene.
+  ///
+  Future clearLights();
+
+  ///
+  /// Load the .glb asset at the given path and insert into the scene.
+  /// Specify [numInstances] to create multiple instances (this is more efficient than dynamically instantating at a later time). You can then retrieve the created instances with [getInstances].
+  /// If you want to be able to call [createInstance] at a later time, you must pass true for [keepData].
+  /// If [keepData] is false, the source glTF data will be released and [createInstance] will throw an exception.
+  ///
+  Future<ThermionEntity> loadGlb(String path,
+      {int numInstances = 1, bool keepData = false});
+
+  ///
+  /// Load the .glb asset from the specified buffer and insert into the scene.
+  /// Specify [numInstances] to create multiple instances (this is more efficient than dynamically instantating at a later time). You can then retrieve the created instances with [getInstances].
+  /// If you want to be able to call [createInstance] at a later time, you must pass true for [keepData].
+  /// If [keepData] is false, the source glTF data will be released and [createInstance] will throw an exception.
+  ///
+  Future<ThermionEntity> loadGlbFromBuffer(Uint8List data,
+      {int numInstances = 1,
+      bool keepData = false,
+      int priority = 4,
+      int layer = 0});
+
+  ///
+  /// Create a new instance of [entity].
+  ///
+  Future<ThermionEntity> createInstance(ThermionEntity entity);
+
+  ///
+  /// Returns the number of instances of the asset associated with [entity].
+  ///
+  Future<int> getInstanceCount(ThermionEntity entity);
+
+  ///
+  /// Returns all instances of [entity].
+  ///
+  Future<List<ThermionEntity>> getInstances(ThermionEntity entity);
+
+  ///
+  /// Load the .gltf asset at the given path and insert into the scene.
+  /// [relativeResourcePath] is the folder path where the glTF resources are stored;
+  /// this is usually the parent directory of the .gltf file itself.
+  ///
+  /// See [loadGlb] for an explanation of [keepData].
+  ///
+  Future<ThermionEntity> loadGltf(String path, String relativeResourcePath,
+      {bool keepData = false});
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future panStart(double x, double y);
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future panUpdate(double x, double y);
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future panEnd();
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future rotateStart(double x, double y);
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future rotateUpdate(double x, double y);
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future rotateEnd();
+
+  ///
+  /// Set the weights for all morph targets in [entity] to [weights].
+  /// Note that [weights] must contain values for ALL morph targets, but no exception will be thrown if you don't do so (you'll just get incorrect results).
+  /// If you only want to set one value, set all others to zero (check [getMorphTargetNames] if you need the get a list of all morph targets).
+  /// IMPORTANT - this accepts the actual ThermionEntity with the relevant morph targets (unlike [getMorphTargetNames], which uses the parent entity and the child mesh name).
+  /// Use [getChildEntityByName] if you are setting the weights for a child mesh.
+  ///
+  Future setMorphTargetWeights(ThermionEntity entity, List<double> weights);
+
+  ///
+  /// Gets the names of all morph targets for the child renderable [childEntity] under [entity].
+  ///
+  Future<List<String>> getMorphTargetNames(
+      ThermionEntity entity, ThermionEntity childEntity);
+
+  ///
+  /// Gets the names of all bones for the armature at [skinIndex] under the specified [entity].
+  ///
+  Future<List<String>> getBoneNames(ThermionEntity entity, {int skinIndex = 0});
+
+  ///
+  /// Gets the names of all glTF animations embedded in the specified entity.
+  ///
+  Future<List<String>> getAnimationNames(ThermionEntity entity);
+
+  ///
+  /// Returns the length (in seconds) of the animation at the given index.
+  ///
+  Future<double> getAnimationDuration(
+      ThermionEntity entity, int animationIndex);
+
+  ///
+  /// Animate the morph targets in [entity]. See [MorphTargetAnimation] for an explanation as to how to construct the animation frame data.
+  /// This method will check the morph target names specified in [animation] against the morph target names that actually exist exist under [meshName] in [entity],
+  /// throwing an exception if any cannot be found.
+  /// It is permissible for [animation] to omit any targets that do exist under [meshName]; these simply won't be animated.
+  ///
+  Future setMorphAnimationData(
+      ThermionEntity entity, MorphAnimationData animation,
+      {List<String>? targetMeshNames});
+
+  ///
+  /// Clear all current morph animations for [entity].
+  ///
+  Future clearMorphAnimationData(ThermionEntity entity);
+
+  ///
+  /// Resets all bones in the given entity to their rest pose.
+  /// This should be done before every call to addBoneAnimation.
+  ///
+  Future resetBones(ThermionEntity entity);
+
+  ///
+  /// Enqueues and plays the [animation] for the specified bone(s).
+  /// By default, frame data is interpreted as being in *parent* bone space;
+  /// a 45 degree around Y means the bone will rotate 45 degrees around the
+  /// Y axis of the parent bone *in its current orientation*.
+  /// (i.e NOT the parent bone's rest position!).
+  /// Currently, only [Space.ParentBone] and [Space.Model] are supported; if you want
+  /// to transform to another space, you will need to do so manually.
+  ///
+  /// [fadeInInSecs]/[fadeOutInSecs]/[maxDelta] are used to cross-fade between
+  /// the current active glTF animation ("animation1") and the animation you
+  /// set via this method ("animation2"). The bone orientations will be
+  /// linearly interpolated between animation1 and animation2; at time 0,
+  /// the orientation will be 100% animation1, at time [fadeInInSecs], the
+  /// animation will be ((1 - maxDelta) * animation1) + (maxDelta * animation2).
+  /// This will be applied in reverse after [fadeOutInSecs].
+  ///
+  ///
+  Future addBoneAnimation(ThermionEntity entity, BoneAnimationData animation,
+      {int skinIndex = 0,
+      double fadeInInSecs = 0.0,
+      double fadeOutInSecs = 0.0,
+      double maxDelta = 1.0});
+
+  ///
+  /// Gets the entity representing the bone at [boneIndex]/[skinIndex].
+  /// The returned entity is only intended for use with [getWorldTransform].
+  ///
+  Future<ThermionEntity> getBone(ThermionEntity parent, int boneIndex,
+      {int skinIndex = 0});
+
+  ///
+  /// Gets the local (relative to parent) transform for [entity].
+  ///
+  Future<Matrix4> getLocalTransform(ThermionEntity entity);
+
+  ///
+  /// Gets the world transform for [entity].
+  ///
+  Future<Matrix4> getWorldTransform(ThermionEntity entity);
+
+  ///
+  /// Gets the inverse bind (pose) matrix for the bone.
+  /// Note that [parent] must be the ThermionEntity returned by [loadGlb/loadGltf], not any other method ([getChildEntity] etc).
+  /// This is because all joint information is internally stored with the parent entity.
+  ///
+  Future<Matrix4> getInverseBindMatrix(ThermionEntity parent, int boneIndex,
+      {int skinIndex = 0});
+
+  ///
+  /// Sets the transform (relative to its parent) for [entity].
+  ///
+  Future setTransform(ThermionEntity entity, Matrix4 transform);
+
+  ///
+  /// Updates the bone matrices for [entity] (which must be the ThermionEntity
+  /// returned by [loadGlb/loadGltf]).
+  /// Under the hood, this just calls [updateBoneMatrices] on the Animator
+  /// instance of the relevant FilamentInstance (which uses the local
+  /// bone transform and the inverse bind matrix to set the bone matrix).
+  ///
+  Future updateBoneMatrices(ThermionEntity entity);
+
+  ///
+  /// Directly set the bone matrix for the bone at the given index.
+  /// Don't call this manually unless you know what you're doing.
+  ///
+  Future setBoneTransform(
+      ThermionEntity entity, int boneIndex, Matrix4 transform,
+      {int skinIndex = 0});
+
+  ///
+  /// Removes/destroys the specified entity from the scene.
+  /// [entity] will no longer be a valid handle after this method is called; ensure you immediately discard all references once this method is complete.
+  ///
+  Future removeEntity(ThermionEntity entity);
+
+  ///
+  /// Removes/destroys all renderable entities from the scene (including cameras).
+  /// All [ThermionEntity] handles will no longer be valid after this method is called; ensure you immediately discard all references to all entities once this method is complete.
+  ///
+  Future clearEntities();
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future zoomBegin();
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future zoomUpdate(double x, double y, double z);
+
+  ///
+  /// Called by `FilamentGestureDetector`. You probably don't want to call this yourself.
+  ///
+  Future zoomEnd();
+
+  ///
+  /// Schedules the glTF animation at [index] in [entity] to start playing on the next frame.
+  ///
+  Future playAnimation(ThermionEntity entity, int index,
+      {bool loop = false,
+      bool reverse = false,
+      bool replaceActive = true,
+      double crossfade = 0.0,
+      double startOffset = 0.0});
+
+  ///
+  /// Schedules the glTF animation at [index] in [entity] to start playing on the next frame.
+  ///
+  Future playAnimationByName(ThermionEntity entity, String name,
+      {bool loop = false,
+      bool reverse = false,
+      bool replaceActive = true,
+      double crossfade = 0.0});
+
+  Future setAnimationFrame(
+      ThermionEntity entity, int index, int animationFrame);
+
+  Future stopAnimation(ThermionEntity entity, int animationIndex);
+  Future stopAnimationByName(ThermionEntity entity, String name);
+
+  ///
+  /// Sets the current scene camera to the glTF camera under [name] in [entity].
+  ///
+  Future setCamera(ThermionEntity entity, String? name);
+
+  ///
+  /// Sets the current scene camera to the main camera (which is always available and added to every scene by default).
+  ///
+  Future setMainCamera();
+
+  ///
+  /// Returns the entity associated with the main camera. You probably never need this; use getMainCamera instead.
+  ///
+  Future<ThermionEntity> getMainCameraEntity();
+
+  ///
+  /// Returns the entity associated with the main camera. You probably never need this; use getMainCamera instead.
+  ///
+  Future<Camera> getMainCamera();
+
+  ///
+  /// Sets the horizontal field of view (if [horizontal] is true) or vertical field of view for the currently active camera to [degrees].
+  /// The aspect ratio of the current viewport is used.
+  ///
+  Future setCameraFov(double degrees, {bool horizontal = true});
+
+  ///
+  /// Gets the field of view (in degrees).
+  ///
+  Future<double> getCameraFov(bool horizontal);
+
+  ///
+  /// Sets the tone mapping (requires postprocessing).
+  ///
+  Future setToneMapping(ToneMapper mapper);
+
+  ///
+  /// Sets the strength of the bloom.
+  ///
+  Future setBloom(double bloom);
+
+  ///
+  /// Sets the focal length of the camera. Default value is 28.0.
+  ///
+  Future setCameraFocalLength(double focalLength);
+
+  ///
+  /// Sets the distance (in world units) to the near/far planes for the active camera. Default values are 0.05/1000.0. See Camera.h for details.
+  ///
+  Future setCameraCulling(double near, double far);
+
+  ///
+  /// Get the distance (in world units) to the near plane for the active camera.
+  ///
+  @Deprecated("Use getCameraNear")
+  Future<double> getCameraCullingNear();
+
+  ///
+  /// Get the distance (in world units) to the near plane for the active camera.
+  ///
+  Future<double> getCameraNear();
+
+  ///
+  /// Get the distance (in world units) to the far culling plane for the active camera.
+  ///
+  Future<double> getCameraCullingFar();
+
+  ///
+  ///
+  ///
+  Future setCameraLensProjection(
+      {double near = kNear,
+      double far = kFar,
+      double? aspect,
+      double focalLength = kFocalLength});
+
+  ///
+  /// Sets the focus distance for the camera.
+  ///
+  Future setCameraFocusDistance(double focusDistance);
+
+  ///
+  /// Get the camera position in world space.
+  ///
+  Future<Vector3> getCameraPosition();
+
+  ///
+  /// Get the camera's model matrix.
+  ///
+  Future<Matrix4> getCameraModelMatrix();
+
+  ///
+  /// Get the camera's view matrix. See Camera.h for more details.
+  ///
+  Future<Matrix4> getCameraViewMatrix();
+
+  ///
+  /// Get the camera's projection matrix. See Camera.h for more details.
+  ///
+  Future<Matrix4> getCameraProjectionMatrix();
+
+  ///
+  /// Get the camera's culling projection matrix. See Camera.h for more details.
+  ///
+  Future<Matrix4> getCameraCullingProjectionMatrix();
+
+  ///
+  /// Get the camera's culling frustum in world space. Returns a (vector_math) [Frustum] instance where plane0-plane6 define the left, right, bottom, top, far and near planes respectively.
+  /// See Camera.h and (filament) Frustum.h for more details.
+  ///
+  Future<Frustum> getCameraFrustum();
+
+  ///
+  /// Set the camera position in world space. Note this is not persistent - any viewport navigation will reset the camera transform.
+  ///
+  Future setCameraPosition(double x, double y, double z);
+
+  ///
+  /// Get the camera rotation matrix.
+  ///
+  Future<Matrix3> getCameraRotation();
+
+  ///
+  /// Repositions the camera to the last vertex of the bounding box of [entity], looking at the penultimate vertex.
+  ///
+  Future moveCameraToAsset(ThermionEntity entity);
+
+  ///
+  /// Enables/disables frustum culling.
+  ///
+  Future setViewFrustumCulling(bool enabled);
+
+  ///
+  /// Sets the camera exposure.
+  ///
+  Future setCameraExposure(
+      double aperture, double shutterSpeed, double sensitivity);
+
+  ///
+  /// Rotate the camera by [rads] around the given axis.
+  ///
+  Future setCameraRotation(Quaternion quaternion);
+
+  ///
+  /// Sets the camera model matrix.
+  ///
+  @Deprecated("Will be superseded by setCameraModelMatrix4")
+  Future setCameraModelMatrix(List<double> matrix);
+
+  ///
+  /// Sets the camera model matrix.
+  ///
+  Future setCameraModelMatrix4(Matrix4 matrix);
+
+  ///
+  /// Sets the `baseColorFactor` property for the material at index [materialIndex] in [entity] under node [meshName] to [color].
+  ///
+  @Deprecated("Use setMaterialPropertyFloat4 instead")
+  Future setMaterialColor(ThermionEntity entity, String meshName,
+      int materialIndex, double r, double g, double b, double a);
+
+  ///
+  /// Sets the material property [propertyName] under material [materialIndex] for [entity] to [value].
+  /// [entity] must have a Renderable attached.
+  ///
+  Future setMaterialPropertyFloat4(ThermionEntity entity, String propertyName,
+      int materialIndex, double f1, double f2, double f3, double f4);
+
+  ///
+  /// Sets the material property [propertyName] under material [materialIndex] for [entity] to [value].
+  /// [entity] must have a Renderable attached.
+  ///
+  Future setMaterialPropertyFloat(ThermionEntity entity, String propertyName,
+      int materialIndex, double value);
+
+  ///
+  /// Sets the material property [propertyName] under material [materialIndex] for [entity] to [value].
+  /// [entity] must have a Renderable attached.
+  ///
+  Future setMaterialPropertyInt(
+      ThermionEntity entity, String propertyName, int materialIndex, int value);
+
+  ///
+  /// Scale [entity] to fit within the unit cube.
+  ///
+  Future transformToUnitCube(ThermionEntity entity);
+
+  ///
+  /// Directly sets the world space position for [entity] to the given coordinates.
+  ///
+  Future setPosition(ThermionEntity entity, double x, double y, double z);
+
+  ///
+  /// Set the world space position for [lightEntity] to the given coordinates.
+  ///
+  Future setLightPosition(
+      ThermionEntity lightEntity, double x, double y, double z);
+
+  ///
+  /// Sets the world space direction for [lightEntity] to the given vector.
+  ///
+  Future setLightDirection(ThermionEntity lightEntity, Vector3 direction);
+
+  ///
+  /// Directly sets the scale for [entity], skipping all collision detection.
+  ///
+  Future setScale(ThermionEntity entity, double scale);
+
+  ///
+  /// Directly sets the rotation for [entity] to [rads] around the axis {x,y,z}, skipping all collision detection.
+  ///
+  Future setRotation(
+      ThermionEntity entity, double rads, double x, double y, double z);
+
+  ///
+  /// Queues an update to the worldspace position for [entity] to {x,y,z}.
+  /// The actual update will occur on the next frame, and will be subject to collision detection.
+  ///
+  Future queuePositionUpdate(
+      ThermionEntity entity, double x, double y, double z,
+      {bool relative = false});
+
+  ///
+  /// TODO
+  ///
+  Future queuePositionUpdateFromViewportCoords(
+      ThermionEntity entity, double x, double y);
+
+  ///
+  /// TODO
+  ///
+  Future queueRelativePositionUpdateWorldAxis(ThermionEntity entity,
+      double viewportX, double viewportY, double x, double y, double z);
+
+  ///
+  /// Queues an update to the worldspace rotation for [entity].
+  /// The actual update will occur on the next frame, and will be subject to collision detection.
+  ///
+  Future queueRotationUpdate(
+      ThermionEntity entity, double rads, double x, double y, double z,
+      {bool relative = false});
+
+  ///
+  /// Same as [queueRotationUpdate].
+  ///
+  Future queueRotationUpdateQuat(ThermionEntity entity, Quaternion quat,
+      {bool relative = false});
+
+  ///
+  /// Enable/disable postprocessing (disabled by default).
+  ///
+  Future setPostProcessing(bool enabled);
+
+  ///
+  /// Enable/disable shadows (disabled by default).
+  ///
+  Future setShadowsEnabled(bool enabled);
+
+  ///
+  /// Set shadow type.
+  ///
+  Future setShadowType(ShadowType shadowType);
+
+  ///
+  /// Set soft shadow options (ShadowType DPCF and PCSS)
+  ///
+  Future setSoftShadowOptions(double penumbraScale, double penumbraRatioScale);
+
+  ///
+  /// Set antialiasing options.
+  ///
+  Future setAntiAliasing(bool msaa, bool fxaa, bool taa);
+
+  ///
+  /// Sets the rotation for [entity] to the specified quaternion.
+  ///
+  Future setRotationQuat(ThermionEntity entity, Quaternion rotation);
+
+  ///
+  /// Reveal the node [meshName] under [entity]. Only applicable if [hide] had previously been called; this is a no-op otherwise.
+  ///
+  Future reveal(ThermionEntity entity, String? meshName);
+
+  ///
+  /// If [meshName] is provided, hide the node [meshName] under [entity], otherwise hide the root node for [entity].
+  /// The entity still exists in memory, but is no longer being rendered into the scene. Call [reveal] to re-commence rendering.
+  ///
+  Future hide(ThermionEntity entity, String? meshName);
+
+  ///
+  /// Used to select the entity in the scene at the given viewport coordinates.
+  /// Called by `FilamentGestureDetector` on a mouse/finger down event. You probably don't want to call this yourself.
+  /// This is asynchronous and will require 2-3 frames to complete - subscribe to the [pickResult] stream to receive the results of this method.
+  /// [x] and [y] must be in local logical coordinates (i.e. where 0,0 is at top-left of the ThermionWidget).
+  ///
+  void pick(int x, int y);
+
+  ///
+  /// Used to test whether a Gizmo is at the given viewport coordinates.
+  /// Called by `FilamentGestureDetector` on a mouse/finger down event. You probably don't want to call this yourself.
+  /// This is asynchronous and will require 2-3 frames to complete - subscribe to the [gizmoPickResult] stream to receive the results of this method.
+  /// [x] and [y] must be in local logical coordinates (i.e. where 0,0 is at top-left of the ThermionWidget).
+  ///
+  void pickGizmo(int x, int y);
+
+  ///
+  /// Retrieves the name assigned to the given ThermionEntity (usually corresponds to the glTF mesh name).
+  ///
+  String? getNameForEntity(ThermionEntity entity);
+
+  ///
+  /// Sets the options for manipulating the camera via the viewport.
+  /// ManipulatorMode.FREE_FLIGHT and ManipulatorMode.MAP are currently unsupported and will throw an exception.
+  ///
+  @Deprecated("Use ThermionGestureHandler instead")
+  Future setCameraManipulatorOptions(
+      {ManipulatorMode mode = ManipulatorMode.ORBIT,
+      double orbitSpeedX = 0.01,
+      double orbitSpeedY = 0.01,
+      double zoomSpeed = 0.01});
+
+  ///
+  /// Returns all child entities under [parent].
+  ///
+  Future<List<ThermionEntity>> getChildEntities(
+      ThermionEntity parent, bool renderableOnly);
+
+  ///
+  /// Finds the child entity named [childName] associated with the given parent.
+  /// Usually, [parent] will be the return value from [loadGlb]/[loadGltf] and [childName] will be the name of a node/mesh.
+  ///
+  Future<ThermionEntity> getChildEntity(
+      ThermionEntity parent, String childName);
+
+  ///
+  /// List the name of all child entities under the given entity.
+  ///
+  Future<List<String>> getChildEntityNames(ThermionEntity entity,
+      {bool renderableOnly = true});
+
+  ///
+  /// If [recording] is set to true, each frame the framebuffer/texture will be written to /tmp/output_*.png.
+  /// This will impact performance; handle with care.
+  ///
+  Future setRecording(bool recording);
+
+  ///
+  /// Sets the output directory where recorded PNGs will be placed.
+  ///
+  Future setRecordingOutputDirectory(String outputDirectory);
+
+  ///
+  /// An [entity] will only be animatable after an animation component is attached.
+  /// Any calls to [playAnimation]/[setBoneAnimation]/[setMorphAnimation] will have no visual effect until [addAnimationComponent] has been called on the instance.
+  ///
+  Future addAnimationComponent(ThermionEntity entity);
+
+  ///
+  /// Removes an animation component from [entity].
+  ///
+  Future removeAnimationComponent(ThermionEntity entity);
+
+  ///
+  /// Makes [entity] collidable.
+  /// This allows you to call [testCollisions] with any other entity ("entity B") to see if [entity] has collided with entity B. The callback will be invoked if so.
+  /// Alternatively, if [affectsTransform] is true and this entity collides with another entity, any queued position updates to the latter entity will be ignored.
+  ///
+  Future addCollisionComponent(ThermionEntity entity,
+      {void Function(int entityId1, int entityId2)? callback,
+      bool affectsTransform = false});
+
+  ///
+  /// Removes the collision component from [entity], meaning this will no longer be tested when [testCollisions] or [queuePositionUpdate] is called with another entity.
+  ///
+  Future removeCollisionComponent(ThermionEntity entity);
+
+  ///
+  /// Creates a (renderable) entity with the specified geometry and adds to the scene.
+  /// If [keepData] is true, the source data will not be released.
+  ///
+  Future createGeometry(Geometry geometry,
+      {MaterialInstance? materialInstance, bool keepData = false});
+
+  ///
+  /// Gets the parent entity of [entity]. Returns null if the entity has no parent.
+  ///
+  Future<ThermionEntity?> getParent(ThermionEntity entity);
+
+  ///
+  /// Gets the ancestor (ultimate parent) entity of [entity]. Returns null if the entity has no parent.
+  ///
+  Future<ThermionEntity?> getAncestor(ThermionEntity entity);
+
+  ///
+  /// Sets the parent transform of [child] to [parent].
+  ///
+  Future setParent(ThermionEntity child, ThermionEntity parent,
+      {bool preserveScaling});
+
+  ///
+  /// Test all collidable entities against this entity to see if any have collided.
+  /// This method returns void; the relevant callback passed to [addCollisionComponent] will be fired if a collision is detected.
+  ///
+  Future testCollisions(ThermionEntity entity);
+
+  ///
+  /// Sets the draw priority for the given entity. See RenderableManager.h for more details.
+  ///
+  Future setPriority(ThermionEntity entityId, int priority);
+
+  ///
+  /// The gizmo for translating/rotating objects. Only one gizmo is present in the scene.
+  ///
+  AbstractGizmo? get gizmo;
+
+  ///
+  /// Register a callback to be invoked when this viewer is disposed.
+  ///
+  void onDispose(Future Function() callback);
+
+  ///
+  /// Gets the 2D bounding box (in viewport coordinates) for the given entity.
+  ///
+  Future<Aabb2> getViewportBoundingBox(ThermionEntity entity);
+
+  ///
+  /// Filament assigns renderables to a numeric layer.
+  /// We place all scene assets in layer 0 (enabled by default), gizmos in layer 1 (enabled by default), world grid in layer 2 (disabled by default).
+  /// Use this method to toggle visibility of the respective layer.
+  ///
+  Future setLayerVisibility(int layer, bool visible);
+
+  ///
+  /// Assigns [entity] to visibility layer [layer].
+  ///
+  Future setVisibilityLayer(ThermionEntity entity, int layer);
+
+  ///
+  /// Show/hide the translation gizmo.
+  ///
+  Future setGizmoVisibility(bool visible);
+
+  ///
+  /// Renders an outline around [entity] with the given color.
+  ///
+  Future setStencilHighlight(ThermionEntity entity,
+      {double r = 1.0, double g = 0.0, double b = 0.0});
+
+  ///
+  /// Removes the outline around [entity]. Noop if there was no highlight.
+  ///
+  Future removeStencilHighlight(ThermionEntity entity);
+
+  ///
+  /// Decodes the specified image data and creates a texture.
+  ///
+  Future<ThermionTexture> createTexture(Uint8List data);
+
+  ///
+  ///
+  ///
+  Future applyTexture(covariant ThermionTexture texture, ThermionEntity entity,
+      {int materialIndex = 0, String parameterName = "baseColorMap"});
+
+  ///
+  ///
+  ///
+  Future destroyTexture(covariant ThermionTexture texture);
+
+  ///
+  ///
+  ///
+  Future<MaterialInstance> createUbershaderMaterialInstance({
+    bool doubleSided = false,
+    bool unlit = false,
+    bool hasVertexColors = false,
+    bool hasBaseColorTexture = false,
+    bool hasNormalTexture = false,
+    bool hasOcclusionTexture = false,
+    bool hasEmissiveTexture = false,
+    bool useSpecularGlossiness = false,
+    AlphaMode alphaMode = AlphaMode.OPAQUE,
+    bool enableDiagnostics = false,
+    bool hasMetallicRoughnessTexture = false,
+    int metallicRoughnessUV = 0,
+    int baseColorUV = 0,
+    bool hasClearCoatTexture = false,
+    int clearCoatUV = 0,
+    bool hasClearCoatRoughnessTexture = false,
+    int clearCoatRoughnessUV = 0,
+    bool hasClearCoatNormalTexture = false,
+    int clearCoatNormalUV = 0,
+    bool hasClearCoat = false,
+    bool hasTransmission = false,
+    bool hasTextureTransforms = false,
+    int emissiveUV = 0,
+    int aoUV = 0,
+    int normalUV = 0,
+    bool hasTransmissionTexture = false,
+    int transmissionUV = 0,
+    bool hasSheenColorTexture = false,
+    int sheenColorUV = 0,
+    bool hasSheenRoughnessTexture = false,
+    int sheenRoughnessUV = 0,
+    bool hasVolumeThicknessTexture = false,
+    int volumeThicknessUV = 0,
+    bool hasSheen = false,
+    bool hasIOR = false,
+    bool hasVolume = false,
+  });
+
+  ///
+  ///
+  ///
+  Future destroyMaterialInstance(covariant MaterialInstance materialInstance);
+
+  ///
+  ///
+  ///
+  Future<MaterialInstance> createUnlitMaterialInstance();
+
+  ///
+  ///
+  ///
+  Future<MaterialInstance?> getMaterialInstanceAt(
+      ThermionEntity entity, int index);
+}

thermion_dart/lib/thermion_dart/viewer/thermion_viewer_stub.dart

@@ -1,13 +1,15 @@
 import 'dart:math';
+import 'dart:typed_data';
 
-import 'package:thermion_dart/thermion_dart/scene.dart';
+import 'package:thermion_dart/thermion_dart/entities/abstract_gizmo.dart';
 import 'package:thermion_dart/thermion_dart/thermion_viewer.dart';
+import 'package:thermion_dart/thermion_dart/viewer/events.dart';
+import 'package:thermion_dart/thermion_dart/viewer/shared_types/camera.dart';
+import 'package:thermion_dart/thermion_dart/viewer/thermion_viewer_base.dart';
 import 'package:vector_math/vector_math_64.dart';
 import 'dart:async';
 import 'package:animation_tools_dart/animation_tools_dart.dart';
 
-typedef ThermionViewerImpl = ThermionViewerStub;
-
 class ThermionViewerStub extends ThermionViewer {
   @override
   Future addAnimationComponent(ThermionEntity entity) {
@@ -73,13 +75,6 @@ class ThermionViewerStub extends ThermionViewer {
     throw UnimplementedError();
   }
 
-  @override
-  Future createGeometry(List<double> vertices, List<int> indices,
-      {String? materialPath,
-      PrimitiveType primitiveType = PrimitiveType.TRIANGLES}) {
-    // TODO: implement createGeometry
-    throw UnimplementedError();
-  }
 
   @override
   Future<ThermionEntity> createInstance(ThermionEntity entity) {
@@ -220,12 +215,6 @@ class ThermionViewerStub extends ThermionViewer {
     throw UnimplementedError();
   }
 
-  @override
-  Future<ThermionEntity> getMainCamera() {
-    // TODO: implement getMainCamera
-    throw UnimplementedError();
-  }
-
   @override
   Future<List<String>> getMorphTargetNames(
       ThermionEntity entity, ThermionEntity childEntity) {
@@ -265,19 +254,6 @@ class ThermionViewerStub extends ThermionViewer {
   // TODO: implement initialized
   Future<bool> get initialized => throw UnimplementedError();
 
-  @override
-  Future<ThermionEntity> loadGlb(String path, {int numInstances = 1}) {
-    // TODO: implement loadGlb
-    throw UnimplementedError();
-  }
-
-  @override
-  Future<ThermionEntity> loadGltf(String path, String relativeResourcePath,
-      {bool force = false}) {
-    // TODO: implement loadGltf
-    throw UnimplementedError();
-  }
-
   @override
   Future loadIbl(String lightingPath, {double intensity = 30000}) {
     // TODO: implement loadIbl
@@ -333,7 +309,8 @@ class ThermionViewerStub extends ThermionViewer {
       {bool loop = false,
       bool reverse = false,
       bool replaceActive = true,
-      double crossfade = 0.0}) {
+      double crossfade = 0.0,
+      double startOffset=0.0}) {
     // TODO: implement playAnimation
     throw UnimplementedError();
   }
@@ -453,10 +430,6 @@ class ThermionViewerStub extends ThermionViewer {
     throw UnimplementedError();
   }
 
-  @override
-  // TODO: implement scene
-  Scene get scene => throw UnimplementedError();
-
   @override
   Future setAnimationFrame(
       ThermionEntity entity, int index, int animationFrame) {
@@ -534,7 +507,7 @@ class ThermionViewerStub extends ThermionViewer {
   }
 
   @override
-  Future setCameraFov(double degrees, double width, double height) {
+  Future setCameraFov(double degrees, {bool horizontal=true}) {
     // TODO: implement setCameraFov
     throw UnimplementedError();
   }
@@ -606,7 +579,7 @@ class ThermionViewerStub extends ThermionViewer {
   }
 
   @override
-  Future setParent(ThermionEntity child, ThermionEntity parent) {
+  Future setParent(ThermionEntity child, ThermionEntity parent, { bool preserveScaling = false}) {
     // TODO: implement setParent
     throw UnimplementedError();
   }
@@ -749,4 +722,249 @@ class ThermionViewerStub extends ThermionViewer {
     // TODO: implement setSoftShadowOptions
     throw UnimplementedError();
   }
+
+  @override
+  Future<Uint8List> capture() {
+    // TODO: implement capture
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<Aabb2> getBoundingBox(ThermionEntity entity) {
+    // TODO: implement getBoundingBox
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<double> getCameraFov(bool horizontal) {
+    // TODO: implement getCameraFov
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future queueRelativePositionUpdateWorldAxis(ThermionEntity entity, double viewportX, double viewportY, double x, double y, double z) {
+    // TODO: implement queueRelativePositionUpdateWorldAxis
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setLayerEnabled(int layer, bool enabled) {
+    // TODO: implement setLayerEnabled
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future createIbl(double r, double g, double b, double intensity) {
+    // TODO: implement createIbl
+    throw UnimplementedError();
+  }
+  
+  @override
+  // TODO: implement gizmoPickResult
+  Stream<FilamentPickResult> get gizmoPickResult => throw UnimplementedError();
+  
+  @override
+  void pickGizmo(int x, int y) {
+    // TODO: implement pickGizmo
+  }
+  
+  @override
+  Future setGizmoVisibility(bool visible) {
+    // TODO: implement setGizmoVisibility
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<ThermionEntity?> getAncestor(ThermionEntity entity) {
+    // TODO: implement getAncestor
+    throw UnimplementedError();
+  }
+  
+  
+  @override
+  Future queuePositionUpdateFromViewportCoords(ThermionEntity entity, double x, double y) {
+    // TODO: implement queuePositionUpdateFromViewportCoords
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future removeStencilHighlight(ThermionEntity entity) {
+    // TODO: implement removeStencilHighlight
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setLightDirection(ThermionEntity lightEntity, Vector3 direction) {
+    // TODO: implement setLightDirection
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setLightPosition(ThermionEntity lightEntity, double x, double y, double z) {
+    // TODO: implement setLightPosition
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setStencilHighlight(ThermionEntity entity, {double r = 1.0, double g = 0.0, double b = 0.0}) {
+    // TODO: implement setStencilHighlight
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<double> getCameraNear() {
+    // TODO: implement getCameraNear
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<Aabb2> getViewportBoundingBox(ThermionEntity entity) {
+    // TODO: implement getViewportBoundingBox
+    throw UnimplementedError();
+  }
+  
+  
+  @override
+  Future setCameraModelMatrix4(Matrix4 matrix) {
+    // TODO: implement setCameraModelMatrix4
+    throw UnimplementedError();
+  }
+  
+    
+  @override
+  Future<ThermionEntity> loadGlb(String path, {int numInstances = 1, bool keepData = false}) {
+    // TODO: implement loadGlb
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<ThermionEntity> loadGltf(String path, String relativeResourcePath, {bool keepData = false}) {
+    // TODO: implement loadGltf
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setMaterialPropertyFloat(ThermionEntity entity, String propertyName, int materialIndex, double value) {
+    // TODO: implement setMaterialPropertyFloat
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setMaterialPropertyFloat4(ThermionEntity entity, String propertyName, int materialIndex, double f1, double f2, double f3, double f4) {
+    // TODO: implement setMaterialPropertyFloat4
+    throw UnimplementedError();
+  }
+  
+  @override
+  // TODO: implement sceneUpdated
+  Stream<SceneUpdateEvent> get sceneUpdated => throw UnimplementedError();
+  
+  @override
+  Future<ThermionEntity> addDirectLight(DirectLight light) {
+    // TODO: implement addDirectLight
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future applyTexture(covariant ThermionTexture texture, ThermionEntity entity, {int materialIndex = 0, String parameterName = "baseColorMap"}) {
+    // TODO: implement applyTexture
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<ThermionTexture> createTexture(Uint8List data) {
+    // TODO: implement createTexture
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<MaterialInstance> createUbershaderMaterialInstance({bool doubleSided = false, bool unlit = false, bool hasVertexColors = false, bool hasBaseColorTexture = false, bool hasNormalTexture = false, bool hasOcclusionTexture = false, bool hasEmissiveTexture = false, bool useSpecularGlossiness = false, AlphaMode alphaMode = AlphaMode.OPAQUE, bool enableDiagnostics = false, bool hasMetallicRoughnessTexture = false, int metallicRoughnessUV = 0, int baseColorUV = 0, bool hasClearCoatTexture = false, int clearCoatUV = 0, bool hasClearCoatRoughnessTexture = false, int clearCoatRoughnessUV = 0, bool hasClearCoatNormalTexture = false, int clearCoatNormalUV = 0, bool hasClearCoat = false, bool hasTransmission = false, bool hasTextureTransforms = false, int emissiveUV = 0, int aoUV = 0, int normalUV = 0, bool hasTransmissionTexture = false, int transmissionUV = 0, bool hasSheenColorTexture = false, int sheenColorUV = 0, bool hasSheenRoughnessTexture = false, int sheenRoughnessUV = 0, bool hasVolumeThicknessTexture = false, int volumeThicknessUV = 0, bool hasSheen = false, bool hasIOR = false, bool hasVolume = false}) {
+    // TODO: implement createUbershaderMaterialInstance
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<MaterialInstance> createUnlitMaterialInstance() {
+    // TODO: implement createUnlitMaterialInstance
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future destroyMaterialInstance(covariant MaterialInstance materialInstance) {
+    // TODO: implement destroyMaterialInstance
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future destroyTexture(covariant ThermionTexture texture) {
+    // TODO: implement destroyTexture
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future createGeometry(Geometry geometry, {MaterialInstance? materialInstance, bool keepData = false}) {
+    // TODO: implement createGeometry
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<ThermionEntity> loadGlbFromBuffer(Uint8List data, {int numInstances = 1, bool keepData = false, int priority = 4, int layer = 0}) {
+    // TODO: implement loadGlbFromBuffer
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setMaterialPropertyInt(ThermionEntity entity, String propertyName, int materialIndex, int value) {
+    // TODO: implement setMaterialPropertyInt
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<MaterialInstance?> getMaterialInstanceAt(ThermionEntity entity, int index) {
+    // TODO: implement getMaterialInstanceAt
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setLayerVisibility(int layer, bool visible) {
+    // TODO: implement setLayerVisibility
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setMaterialDepthWrite(ThermionEntity entity, int materialIndex, bool enabled) {
+    // TODO: implement setMaterialDepthWrite
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setVisibilityLayer(ThermionEntity entity, int layer) {
+    // TODO: implement setVisibilityLayer
+    throw UnimplementedError();
+  }
+  
+  @override
+  void requestFrame() {
+    // TODO: implement requestFrame
+  }
+  
+  @override
+  Future setCameraLensProjection({double near = kNear, double far = kFar, double? aspect, double focalLength = kFocalLength}) {
+    // TODO: implement setCameraLensProjection
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<ThermionEntity> getMainCameraEntity() {
+    // TODO: implement getMainCameraEntity
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<Camera> getMainCamera() {
+    // TODO: implement getMainCamera
+    throw UnimplementedError();
+  }
+
+  
 }

thermion_dart/lib/thermion_dart/viewer/web/thermion_viewer_dart_bridge.dart

@@ -3,7 +3,7 @@ library thermion_flutter_js;
 
 import 'dart:js_interop';
 import 'package:logging/logging.dart';
-import 'package:thermion_dart/thermion_dart/compatibility/web/interop/thermion_viewer_js_shim.dart';
+import 'package:thermion_dart/thermion_dart/viewer/web/thermion_viewer_js_shim.dart';
 
 import 'package:vector_math/vector_math_64.dart' as v64;
 import 'package:animation_tools_dart/animation_tools_dart.dart';
@@ -48,6 +48,11 @@ class ThermionViewerJSDartBridge {
   @JSExport()
   JSPromise render() => viewer.render().toJS;
 
+  @JSExport()
+  JSPromise<JSUint8Array> capture() {
+    return viewer.capture().then((captured) => captured.toJS).toJS;
+  }
+
   @JSExport()
   JSPromise setFrameRate(int framerate) => viewer.setFrameRate(framerate).toJS;
 
@@ -161,9 +166,9 @@ class ThermionViewerJSDartBridge {
 
   @JSExport()
   JSPromise<JSNumber> loadGltf(String path, String relativeResourcePath,
-      {bool force = false}) {
+      {bool keepData = false}) {
     return viewer
-        .loadGltf(path, relativeResourcePath, force: force)
+        .loadGltf(path, relativeResourcePath, keepData: keepData)
         .then((entity) => entity.toJS)
         .toJS;
   }
@@ -339,16 +344,15 @@ class ThermionViewerJSDartBridge {
           {bool loop = false,
           bool reverse = false,
           bool replaceActive = true,
-          double crossfade = 0.0}) =>
+          double crossfade = 0.0,
+          double startOffset = 0.0}) =>
       viewer
-          .playAnimation(
+          .playAnimation(entity, index,
-            entity,
+              loop: loop,
-            index,
+              reverse: reverse,
-            loop: loop,
+              replaceActive: replaceActive,
-            reverse: reverse,
+              crossfade: crossfade,
-            replaceActive: replaceActive,
+              startOffset: startOffset)
-            crossfade: crossfade,
-          )
           .toJS;
 
   @JSExport()
@@ -400,8 +404,16 @@ class ThermionViewerJSDartBridge {
   }
 
   @JSExport()
-  JSPromise setCameraFov(double degrees, double width, double height) =>
+  JSPromise setParent(
-      viewer.setCameraFov(degrees, width, height).toJS;
+      ThermionEntity child, ThermionEntity parent, bool preserveScaling) {
+    return viewer
+        .setParent(child, parent, preserveScaling: preserveScaling)
+        .toJS;
+  }
+
+  @JSExport()
+  JSPromise setCameraFov(double degrees, bool horizontal) =>
+      viewer.setCameraFov(degrees, horizontal: horizontal).toJS;
 
   @JSExport()
   JSPromise setToneMapping(int mapper) =>
@@ -523,9 +535,11 @@ class ThermionViewerJSDartBridge {
 // b,
 // a,
 // ).toJS;
+
   @JSExport()
   JSPromise transformToUnitCube(ThermionEntity entity) =>
       viewer.transformToUnitCube(entity).toJS;
+
   @JSExport()
   JSPromise setPosition(ThermionEntity entity, double x, double y, double z) =>
       viewer.setPosition(entity, x, y, z).toJS;

thermion_dart/lib/thermion_dart/viewer/web/thermion_viewer_js.dart

@@ -1,13 +1,14 @@
 import 'dart:js_interop';
 import 'dart:js_interop_unsafe';
 import 'dart:math';
+import 'dart:typed_data';
 
 import 'package:animation_tools_dart/animation_tools_dart.dart';
 import 'package:logging/logging.dart';
+import 'package:thermion_dart/thermion_dart/entities/abstract_gizmo.dart';
 import 'package:thermion_dart/thermion_dart/scene.dart';
 import 'package:thermion_dart/thermion_dart/thermion_viewer.dart';
 
-import 'package:thermion_dart/thermion_dart/scene_impl.dart';
 import 'package:vector_math/vector_math_64.dart';
 import 'thermion_viewer_js_shim.dart';
 
@@ -368,9 +369,11 @@ class ThermionViewerJS implements ThermionViewer {
       {bool loop = false,
       bool reverse = false,
       bool replaceActive = true,
-      double crossfade = 0.0}) async {
+      double crossfade = 0.0,
+      double startOffset = 0.0}) async {
     await _shim
-        .playAnimation(entity, index, loop, reverse, replaceActive, crossfade)
+        .playAnimation(
+            entity, index, loop, reverse, replaceActive, crossfade, startOffset)
         .toDart;
   }
 
@@ -420,8 +423,8 @@ class ThermionViewerJS implements ThermionViewer {
   }
 
   @override
-  Future<void> setCameraFov(double degrees, double width, double height) async {
+  Future<void> setCameraFov(double degrees, {bool horizontal = true}) async {
-    await _shim.setCameraFov(degrees, width, height).toDart;
+    await _shim.setCameraFov(degrees, horizontal).toDart;
   }
 
   @override
@@ -734,8 +737,9 @@ class ThermionViewerJS implements ThermionViewer {
   }
 
   @override
-  Future<void> setParent(ThermionEntity child, ThermionEntity parent) async {
+  Future<void> setParent(ThermionEntity child, ThermionEntity parent,
-    await _shim.setParent(child, parent).toDart;
+      {bool preserveScaling = false}) async {
+    await _shim.setParent(child, parent, preserveScaling).toDart;
   }
 
   @override
@@ -848,4 +852,156 @@ class ThermionViewerJS implements ThermionViewer {
   Future setSoftShadowOptions(double penumbraScale, double penumbraRatioScale) {
     return _shim.setSoftShadowOptions(penumbraScale, penumbraRatioScale).toDart;
   }
+
+  @override
+  Future<Uint8List> capture() async {
+    final captured = await _shim.capture().toDart;
+    return captured.toDart;
+  }
+
+  @override
+  late (double, double) viewportDimensions;
+
+  @override
+  Future<Aabb2> getBoundingBox(ThermionEntity entity) {
+    // return _shim.getBoundingBox(entity);
+    throw UnimplementedError();
+  }
+
+  @override
+  Future<double> getCameraFov(bool horizontal) {
+    // TODO: implement getCameraFov
+    throw UnimplementedError();
+  }
+
+  @override
+  Future queueRelativePositionUpdateWorldAxis(ThermionEntity entity,
+      double viewportX, double viewportY, double x, double y, double z) {
+    // TODO: implement queueRelativePositionUpdateWorldAxis
+    throw UnimplementedError();
+  }
+  
+  @override
+  double pixelRatio;
+  
+  @override
+  Future createIbl(double r, double g, double b, double intensity) {
+    // TODO: implement createIbl
+    throw UnimplementedError();
+  }
+  
+  @override
+  // TODO: implement gizmoPickResult
+  Stream<FilamentPickResult> get gizmoPickResult => throw UnimplementedError();
+  
+  @override
+  void pickGizmo(int x, int y) {
+    // TODO: implement pickGizmo
+  }
+  
+  @override
+  Future setGizmoVisibility(bool visible) {
+    // TODO: implement setGizmoVisibility
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setLayerEnabled(int layer, bool enabled) {
+    // TODO: implement setLayerEnabled
+    throw UnimplementedError();
+  }
+  
+  @override
+  // TODO: implement entitiesAdded
+  Stream<ThermionEntity> get entitiesAdded => throw UnimplementedError();
+  
+  @override
+  // TODO: implement entitiesRemoved
+  Stream<ThermionEntity> get entitiesRemoved => throw UnimplementedError();
+  
+  @override
+  Future<ThermionEntity?> getAncestor(ThermionEntity entity) {
+    // TODO: implement getAncestor
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<double> getCameraNear() {
+    // TODO: implement getCameraNear
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future<Aabb2> getViewportBoundingBox(ThermionEntity entity) {
+    // TODO: implement getViewportBoundingBox
+    throw UnimplementedError();
+  }
+  
+  @override
+  // TODO: implement lightsAdded
+  Stream<ThermionEntity> get lightsAdded => throw UnimplementedError();
+  
+  @override
+  // TODO: implement lightsRemoved
+  Stream<ThermionEntity> get lightsRemoved => throw UnimplementedError();
+  
+  @override
+  Future<ThermionEntity> loadGlbFromBuffer(Uint8List data, {int numInstances = 1, bool keepData = false}) {
+    // TODO: implement loadGlbFromBuffer
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future queuePositionUpdateFromViewportCoords(ThermionEntity entity, double x, double y) {
+    // TODO: implement queuePositionUpdateFromViewportCoords
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future removeStencilHighlight(ThermionEntity entity) {
+    // TODO: implement removeStencilHighlight
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setCameraLensProjection(double near, double far, double aspect, double focalLength) {
+    // TODO: implement setCameraLensProjection
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setCameraModelMatrix4(Matrix4 matrix) {
+    // TODO: implement setCameraModelMatrix4
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setLightDirection(ThermionEntity lightEntity, Vector3 direction) {
+    // TODO: implement setLightDirection
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setLightPosition(ThermionEntity lightEntity, double x, double y, double z) {
+    // TODO: implement setLightPosition
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setMaterialPropertyFloat(ThermionEntity entity, String propertyName, int materialIndex, double value) {
+    // TODO: implement setMaterialPropertyFloat
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setMaterialPropertyFloat4(ThermionEntity entity, String propertyName, int materialIndex, double f1, double f2, double f3, double f4) {
+    // TODO: implement setMaterialPropertyFloat4
+    throw UnimplementedError();
+  }
+  
+  @override
+  Future setStencilHighlight(ThermionEntity entity, {double r = 1.0, double g = 0.0, double b = 0.0}) {
+    // TODO: implement setStencilHighlight
+    throw UnimplementedError();
+  }
 }

thermion_dart/lib/thermion_dart/viewer/web/thermion_viewer_js_shim.dart

@@ -22,6 +22,9 @@ extension type ThermionViewerJSShim(JSObject _) implements JSObject {
   @JS('render')
   external JSPromise render();
 
+  @JS('capture')
+  external JSPromise<JSUint8Array> capture();
+
   @JS('setFrameRate')
   external JSPromise setFrameRate(int framerate);
 
@@ -184,6 +187,7 @@ extension type ThermionViewerJSShim(JSObject _) implements JSObject {
     bool reverse,
     bool replaceActive,
     double crossfade,
+    double startOffset,
   );
 
   @JS('playAnimationByName')
@@ -216,7 +220,7 @@ extension type ThermionViewerJSShim(JSObject _) implements JSObject {
   external JSPromise<JSNumber> getMainCamera();
 
   @JS('setCameraFov')
-  external JSPromise setCameraFov(double degrees, double width, double height);
+  external JSPromise setCameraFov(double degrees, bool horizontal);
 
   @JS('setToneMapping')
   external JSPromise setToneMapping(int mapper);
@@ -374,7 +378,7 @@ extension type ThermionViewerJSShim(JSObject _) implements JSObject {
       JSArray<JSNumber> indices, String? materialPath, int primitiveType);
 
   @JS('setParent')
-  external JSPromise setParent(ThermionEntity child, ThermionEntity parent);
+  external JSPromise setParent(ThermionEntity child, ThermionEntity parent, bool preserveScaling);
 
   @JS('getParent')
   external JSPromise<JSNumber> getParent(ThermionEntity child);

thermion_dart/native/include/APIBoundaryTypes.h

@@ -0,0 +1,104 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdint.h>
+
+	typedef int32_t EntityId;
+	typedef int32_t _ManipulatorMode;
+	typedef struct TCamera TCamera;
+	typedef struct TMaterialInstance TMaterialInstance;
+	typedef struct TEngine TEngine;
+	typedef struct TViewer TViewer;
+
+	struct TMaterialKey {
+		bool doubleSided = 1;
+		bool unlit = 1;
+		bool hasVertexColors = 1;
+		bool hasBaseColorTexture = 1;
+		bool hasNormalTexture = 1;
+		bool hasOcclusionTexture = 1;
+		bool hasEmissiveTexture = 1;
+		bool useSpecularGlossiness = 1;
+		int alphaMode = 4;
+		bool enableDiagnostics = 4;
+		union {
+			#ifdef __cplusplus
+			struct {
+				bool hasMetallicRoughnessTexture;
+				uint8_t metallicRoughnessUV;
+			};
+			struct {
+				bool hasSpecularGlossinessTexture;
+				uint8_t specularGlossinessUV;
+			};
+			#else
+			struct {
+				bool hasMetallicRoughnessTexture = 1;
+				uint8_t metallicRoughnessUV = 7;
+			};
+			struct {
+				bool hasSpecularGlossinessTexture = 1;
+				uint8_t specularGlossinessUV = 7;
+			};
+			#endif
+		};
+		uint8_t baseColorUV;
+		// -- 32 bit boundary --
+		bool hasClearCoatTexture = 1;
+		uint8_t clearCoatUV = 7;
+		bool hasClearCoatRoughnessTexture = 1;
+		uint8_t clearCoatRoughnessUV = 7;
+		bool hasClearCoatNormalTexture = 1;
+		uint8_t clearCoatNormalUV = 7;
+		bool hasClearCoat = 1;
+		bool hasTransmission = 1;
+		bool hasTextureTransforms = 6;
+		// -- 32 bit boundary --
+		uint8_t emissiveUV;
+		uint8_t aoUV;
+		uint8_t normalUV;
+		bool hasTransmissionTexture = 1;
+		uint8_t transmissionUV = 7;
+		// -- 32 bit boundary --
+		bool hasSheenColorTexture = 1;
+		uint8_t sheenColorUV = 7;
+		bool hasSheenRoughnessTexture = 1;
+		uint8_t sheenRoughnessUV = 7;
+		bool hasVolumeThicknessTexture = 1;
+		uint8_t volumeThicknessUV = 7;
+		bool hasSheen = 1;
+		bool hasIOR = 1;
+		bool hasVolume = 1;
+	} ;
+	typedef struct TMaterialKey TMaterialKey; 
+
+	typedef struct { 
+		double x;
+		double y; 
+		double z;
+		double w;
+	} double4;
+
+	typedef struct {
+		double col1[4];
+		double col2[4];
+		double col3[4];
+		double col4[4];
+	} double4x4;
+
+    struct Aabb2 {
+        float minX;
+        float minY;
+        float maxX; 
+        float maxY;
+    };
+
+    typedef struct Aabb2 Aabb2;
+
+#ifdef __cplusplus
+}
+#endif

thermion_dart/native/include/CustomGeometry.hpp

@@ -0,0 +1,59 @@
+#pragma once
+
+#include <stddef.h>
+
+#include <filament/Engine.h>
+#include <filament/VertexBuffer.h>
+#include <filament/IndexBuffer.h>
+#include <filament/TransformManager.h>
+#include <filament/Texture.h>
+#include <filament/RenderableManager.h>
+#include <filament/Viewport.h>
+#include <filament/Frustum.h>
+
+namespace thermion_filament
+{
+
+    using namespace filament;
+
+// CustomGeometry.h
+class CustomGeometry {
+public:
+    CustomGeometry(
+        float* vertices, 
+        uint32_t numVertices, 
+        float* normals, 
+        uint32_t numNormals, 
+        float *uvs,
+        uint32_t numUvs,
+        uint16_t* indices, 
+        uint32_t numIndices, 
+        RenderableManager::PrimitiveType primitiveType, 
+        Engine* engine);
+    ~CustomGeometry();
+
+    VertexBuffer* vertexBuffer() const;
+    IndexBuffer* indexBuffer() const;
+    Box getBoundingBox() const;
+
+    float* vertices = nullptr;
+    float* normals = nullptr;
+    float *uvs = nullptr;
+    uint32_t numVertices = 0;
+    uint16_t* indices = 0;
+    uint32_t numIndices = 0;
+    Box boundingBox;
+    RenderableManager::PrimitiveType primitiveType;
+
+private:
+    Engine* _engine;
+    bool _vertexBufferFreed = false;
+    bool _indexBufferFreed = false;
+
+    void computeBoundingBox();
+
+};
+
+
+
+}

thermion_dart/native/include/FilamentViewer.hpp

@@ -42,8 +42,6 @@ namespace thermion_filament
     typedef std::chrono::time_point<std::chrono::high_resolution_clock> time_point_t;
 
     using namespace std::chrono;
-    using namespace filament;
-    using namespace filament::math;
     using namespace gltfio;
     using namespace camutils;
 
@@ -71,12 +69,13 @@ namespace thermion_filament
         void loadIbl(const char *const iblUri, float intensity);
         void removeIbl();
         void rotateIbl(const math::mat3f &matrix);
+        void createIbl(float r, float g, float b, float intensity);
 
         void removeEntity(EntityId asset);
         void clearEntities();
 
-        void updateViewportAndCameraProjection(int height, int width, float scaleFactor);
+        void updateViewport(uint32_t width, uint32_t height);
-        void render(
+        bool render(
             uint64_t frameTimeInNanos,
             void *pixelBuffer,
             void (*callback)(void *buf, size_t size, void *data),
@@ -86,7 +85,10 @@ namespace thermion_filament
         bool setCamera(EntityId asset, const char *nodeName);
         void setMainCamera();
         EntityId getMainCamera();
-        void setCameraFov(double fovDegrees, double aspect);
+        Camera* getCamera(EntityId entity);
+        
+        float getCameraFov(bool horizontal);
+        void setCameraFov(double fovDegrees, bool horizontal);
 
         void createSwapChain(const void *surface, uint32_t width, uint32_t height);
         void destroySwapChain();
@@ -100,24 +102,8 @@ namespace thermion_filament
         void clearBackgroundImage();
         void setBackgroundImagePosition(float x, float y, bool clamp);
 
-        // Camera methods
-        void moveCameraToAsset(EntityId entityId);
         void setViewFrustumCulling(bool enabled);
-        void setCameraExposure(float aperture, float shutterSpeed, float sensitivity);
+
-        void setCameraPosition(float x, float y, float z);
-        void setCameraRotation(float w, float x, float y, float z);
-        const math::mat4 getCameraModelMatrix();
-        const math::mat4 getCameraViewMatrix();
-        const math::mat4 getCameraProjectionMatrix();
-        const math::mat4 getCameraCullingProjectionMatrix();
-        const filament::Frustum getCameraFrustum();
-        void setCameraModelMatrix(const float *const matrix);
-        void setCameraProjectionMatrix(const double *const matrix, double near, double far);
-        void setCameraFocalLength(float focalLength);
-        void setCameraCulling(double near, double far);
-        double getCameraCullingNear();
-        double getCameraCullingFar();
-        void setCameraFocusDistance(float focusDistance);
         void setCameraManipulatorOptions(filament::camutils::Mode mode, double orbitSpeedX, double orbitSpeedY, double zoomSpeed);
         void grabBegin(float x, float y, bool pan);
         void grabUpdate(float x, float y);
@@ -126,6 +112,9 @@ namespace thermion_filament
         void scrollUpdate(float x, float y, float delta);
         void scrollEnd();
         void pick(uint32_t x, uint32_t y, void (*callback)(EntityId entityId, int x, int y));
+        Engine* getEngine() { 
+            return _engine;
+        }
 
         EntityId addLight(
             LightManager::Type t, 
@@ -144,12 +133,15 @@ namespace thermion_filament
             float sunHaloSize,
             float sunHaloFallof,
             bool shadows);
+        void setLightPosition(EntityId entityId, float x, float y, float z);
+        void setLightDirection(EntityId entityId, float x, float y, float z);
         void removeLight(EntityId entityId);
         void clearLights();
         void setPostProcessing(bool enabled);
 
         void setRecording(bool recording);
         void setRecordingOutputDirectory(const char *path);
+        void capture(uint8_t *out, bool useFence, void (*onComplete)());
 
         void setAntiAliasing(bool msaaEnabled, bool fxaaEnabled, bool taaEnabled);
         void setDepthOfField();
@@ -157,18 +149,20 @@ namespace thermion_filament
         void setShadowType(ShadowType shadowType);
         void setSoftShadowOptions( float penumbraScale, float penumbraRatioScale);
 
-        EntityId createGeometry(float *vertices, uint32_t numVertices, uint16_t *indices, uint32_t numIndices, filament::RenderableManager::PrimitiveType primitiveType = RenderableManager::PrimitiveType::TRIANGLES, const char *materialPath = nullptr);
-
         SceneManager *const getSceneManager()
         {
             return (SceneManager *const)_sceneManager;
         }
 
+        void unprojectTexture(EntityId entity, uint8_t* input, uint32_t inputWidth, uint32_t inputHeight, uint8_t* out, uint32_t outWidth, uint32_t outHeight);  
+
     private:
         const ResourceLoaderWrapperImpl *const _resourceLoaderWrapper;
         void* _context = nullptr;
         Scene *_scene = nullptr;
+
         View *_view = nullptr;
+        
         Engine *_engine = nullptr;
         thermion_filament::ThreadPool *_tp = nullptr;
         Renderer *_renderer = nullptr;
@@ -187,32 +181,26 @@ namespace thermion_filament
         Skybox *_skybox = nullptr;
         Texture *_iblTexture = nullptr;
         IndirectLight *_indirectLight = nullptr;
-        bool _recomputeAabb = false;
-        bool _actualSize = false;
 
         float _frameInterval = 1000.0 / 60.0;
 
         // Camera properties
         Camera *_mainCamera = nullptr; // the default camera added to every scene. If you want the *active* camera, access via View.
-        float _cameraFocalLength = 28.0f;
+        
-        float _cameraFocusDistance = 0.0f;
         Manipulator<double> *_manipulator = nullptr;
         filament::camutils::Mode _manipulatorMode = filament::camutils::Mode::ORBIT;
         double _orbitSpeedX = 0.01;
         double _orbitSpeedY = 0.01;
         double _zoomSpeed = 0.01;
-        math::mat4f _cameraPosition;
+        
-        math::mat4f _cameraRotation;
         void _createManipulator();
-        double _near = 0.05;
-        double _far = 1000.0;
 
         ColorGrading *colorGrading = nullptr;
 
         // background image properties
         uint32_t _imageHeight = 0;
         uint32_t _imageWidth = 0;
-        mat4f _imageScale;
+        filament::math::mat4f _imageScale;
         Texture *_imageTexture = nullptr;
         Texture *_dummyImageTexture = nullptr;
         utils::Entity _imageEntity;

thermion_dart/native/include/Gizmo.hpp

@@ -0,0 +1,113 @@
+#pragma once
+
+#include <utils/Entity.h>
+#include <filament/Engine.h>
+#include <filament/Material.h>
+#include <filament/MaterialInstance.h>
+#include <filament/Scene.h>
+#include <filament/Camera.h>
+#include <filament/View.h>
+#include <filament/Viewport.h>
+
+#include <gltfio/AssetLoader.h>
+#include <gltfio/FilamentAsset.h>
+#include <gltfio/FilamentInstance.h>
+#include <gltfio/ResourceLoader.h>
+
+#include <filament/IndexBuffer.h>
+#include <filament/InstanceBuffer.h>
+
+#include "material/gizmo.h"
+
+#include "ThermionDartApi.h"
+
+namespace thermion_filament {
+
+using namespace filament;
+using namespace utils;
+
+class Gizmo { 
+
+    enum Axis { X, Y, Z};
+
+    class PickCallbackHandler {
+        public: 
+            PickCallbackHandler(Gizmo* gizmo, void (*callback)(EntityId entityId, int x, int y)) : _gizmo(gizmo), _callback(callback) {};
+            void handle(filament::View::PickingQueryResult const &result) { 
+                auto x = static_cast<int32_t>(result.fragCoords.x);
+                auto y= static_cast<int32_t>(result.fragCoords.y);
+                for(int i = 0; i < 7; i++) {
+                    if(_gizmo->_entities[i] == result.renderable) {
+                        if(i < 4) {
+                            return;    
+                        }
+                        _gizmo->highlight(_gizmo->_entities[i - 4]);
+                        _callback(Entity::smuggle(_gizmo->_entities[i - 4]), x, y);
+                        return;
+                    }
+                }
+                _gizmo->unhighlight();
+                _callback(0, x, y);
+                delete(this);
+            }
+
+        private:
+            Gizmo* _gizmo;
+            void (*_callback)(EntityId entityId, int x, int y);
+
+    };
+
+    public:
+        Gizmo(Engine& engine, View *view, Scene *scene);
+        ~Gizmo();
+
+        Entity x() {
+            return _entities[0];
+        };
+        Entity y() {
+            return _entities[1];
+        };
+        Entity z() {
+            return _entities[2];
+        };
+        Entity center() {
+            return _entities[3];
+        };
+        View* view() { 
+            return _view;
+        }
+
+        bool isActive() { 
+            return _isActive;
+        }
+
+        void pick(uint32_t x, uint32_t y, void (*callback)(EntityId entityId, int x, int y));
+        bool isGizmoEntity(Entity entity);
+        void setVisibility(bool visible);
+
+    private:
+        void createTransparentRectangles();
+        void highlight(Entity entity);
+        void unhighlight();
+        Engine &_engine;
+        View *_view;
+        Scene *_scene;
+        filament::Camera *_camera;
+        utils::Entity _entities[7] = { utils::Entity(), utils::Entity(), utils::Entity(), utils::Entity(), utils::Entity(), utils::Entity(), utils::Entity() };
+        Material* _material;
+        MaterialInstance* _materialInstances[7];
+        math::float4 inactiveColors[3] {
+            math::float4 { 1.0f, 0.0f, 0.0f, 0.5f },
+            math::float4 { 0.0f, 1.0f, 0.0f, 0.5f },
+            math::float4 { 0.0f, 0.0f, 1.0f, 0.5f },
+        };
+        math::float4 activeColors[3] {
+            math::float4 { 1.0f, 0.0f, 0.0f, 1.0f },
+            math::float4 { 0.0f, 1.0f, 0.0f, 1.0f },
+            math::float4 { 0.0f, 0.0f, 1.0f, 1.0f },
+        };
+        bool _isActive = true;
+        
+};
+
+}

thermion_dart/native/include/GridOverlay.hpp

@@ -0,0 +1,52 @@
+#pragma once
+
+#include <vector> 
+
+#include <utils/Entity.h>
+#include <filament/Engine.h>
+#include <filament/Material.h>
+#include <filament/MaterialInstance.h>
+#include <filament/Scene.h>
+#include <filament/Camera.h>
+#include <filament/View.h>
+#include <filament/Viewport.h>
+
+#include <gltfio/AssetLoader.h>
+#include <gltfio/FilamentAsset.h>
+#include <gltfio/FilamentInstance.h>
+#include <gltfio/ResourceLoader.h>
+
+#include <filament/IndexBuffer.h>
+#include <filament/InstanceBuffer.h>
+
+#include "material/gizmo.h"
+
+
+namespace thermion_filament {
+
+using namespace filament;
+using namespace utils;
+
+class GridOverlay { 
+    public:
+        GridOverlay(Engine& engine);
+        void destroy();
+
+        utils::Entity sphere() {
+            return _sphereEntity;
+        }
+
+        utils::Entity grid() {
+            return _gridEntity;
+        }
+        
+    private:
+        Engine &_engine;
+        utils::Entity _gridEntity;
+        utils::Entity _sphereEntity;
+        Material* _material;
+        MaterialInstance* _materialInstance;
+        MaterialInstance* _sphereMaterialInstance;
+};
+
+}

thermion_dart/native/include/SceneManager.hpp

@@ -4,8 +4,11 @@
 #include <vector>
 #include <memory>
 #include <map>
+#include <set>
 
 #include <filament/Scene.h>
+#include <filament/Camera.h>
+#include <filament/View.h>
 
 #include <gltfio/AssetLoader.h>
 #include <gltfio/FilamentAsset.h>
@@ -14,15 +17,21 @@
 
 #include <filament/IndexBuffer.h>
 #include <filament/InstanceBuffer.h>
+#include <utils/NameComponentManager.h>
 
 #include "material/gizmo.h"
-#include "utils/NameComponentManager.h"
+
+#include "CustomGeometry.hpp"
+#include "Gizmo.hpp"
+#include "APIBoundaryTypes.h"
+#include "GridOverlay.hpp"
 #include "ResourceBuffer.hpp"
 #include "components/CollisionComponentManager.hpp"
 #include "components/AnimationComponentManager.hpp"
 
 #include "tsl/robin_map.h"
 
+
 namespace thermion_filament
 {
     typedef int32_t EntityId;
@@ -37,13 +46,45 @@ namespace thermion_filament
     class SceneManager
     {
     public:
-        SceneManager(const ResourceLoaderWrapperImpl *const loader,
+        SceneManager(View* view,
+                    const ResourceLoaderWrapperImpl *const loader,
                      Engine *engine,
                      Scene *scene,
                      const char *uberArchivePath);
         ~SceneManager();
 
-        EntityId loadGltf(const char *uri, const char *relativeResourcePath);
+        enum LAYERS {
+            DEFAULT_ASSETS = 0,
+            BACKGROUND = 6,
+            OVERLAY = 7,
+        };
+
+        class HighlightOverlay {
+            public:
+                HighlightOverlay(EntityId id, SceneManager* const sceneManager, Engine* const engine, float r, float g, float b);
+                ~HighlightOverlay();
+
+                bool isValid() {
+                    return !_entity.isNull();
+                }
+
+            private:
+                MaterialInstance* _highlightMaterialInstance = nullptr;
+                bool _isGeometryEntity = false;
+                bool _isGltfAsset = false;
+                FilamentInstance* _newInstance = nullptr;
+                Entity _entity;
+                Engine* const _engine;
+                SceneManager* const _sceneManager;                
+        };
+        
+        ////
+        /// @brief Load the glTF file from the specified path and adds all entities to the scene.
+        /// @param uri the path to the asset. Should be either asset:// (representing a Flutter asset), or file:// (representing a filesystem file).
+        /// @param relativeResourcePath the (relative) path to the asset's resources. 
+        /// @return the glTF entity.
+        ///
+        EntityId loadGltf(const char *uri, const char *relativeResourcePath, bool keepData = false);
 
         ////
         /// @brief Load the GLB from the specified path, optionally creating multiple instances.
@@ -51,8 +92,8 @@ namespace thermion_filament
         /// @param numInstances the number of instances to create.
         /// @return an Entity representing the FilamentAsset associated with the loaded FilamentAsset.
         ///
-        EntityId loadGlb(const char *uri, int numInstances);
+        EntityId loadGlb(const char *uri, int numInstances, bool keepData);
-        EntityId loadGlbFromBuffer(const uint8_t *data, size_t length, int numInstances = 1);
+        EntityId loadGlbFromBuffer(const uint8_t *data, size_t length, int numInstances = 1, bool keepData = false, int priority = 4, int layer = 0);
         EntityId createInstance(EntityId entityId);
 
         void remove(EntityId entity);
@@ -69,6 +110,8 @@ namespace thermion_filament
         void setRotation(EntityId e, float rads, float x, float y, float z, float w);
         void queuePositionUpdate(EntityId e, float x, float y, float z, bool relative);
         void queueRotationUpdate(EntityId e, float rads, float x, float y, float z, float w, bool relative);
+        void queueRelativePositionUpdateWorldAxis(EntityId entity, float viewportCoordX, float viewportCoordY, float x, float y, float z);
+        void queueRelativePositionUpdateFromViewportVector(EntityId entityId, float viewportCoordX, float viewportCoordY);
         const utils::Entity *getCameraEntities(EntityId e);
         size_t getCameraEntityCount(EntityId e);
         const utils::Entity *getLightEntities(EntityId e) noexcept;
@@ -129,10 +172,14 @@ namespace thermion_filament
         void resetBones(EntityId entityId);
         bool setTransform(EntityId entityId, math::mat4f transform);
         bool updateBoneMatrices(EntityId entityId);
-        void playAnimation(EntityId e, int index, bool loop, bool reverse, bool replaceActive, float crossfade = 0.3f);
+        void playAnimation(EntityId e, int index, bool loop, bool reverse, bool replaceActive, float crossfade = 0.3f, float startOffset = 0.0f);
         void stopAnimation(EntityId e, int index);
         void setMorphTargetWeights(const char *const entityName, float *weights, int count);
-        void loadTexture(EntityId entity, const char *resourcePath, int renderableIndex);
+        
+        Texture* createTexture(const uint8_t* data, size_t length, const char* name);
+        bool applyTexture(EntityId entityId, Texture *texture, const char* slotName, int materialIndex);
+        void destroyTexture(Texture* texture);
+        
         void setAnimationFrame(EntityId entity, int animationIndex, int animationFrame);
         bool hide(EntityId entity, const char *meshName);
         bool reveal(EntityId entity, const char *meshName);
@@ -146,10 +193,21 @@ namespace thermion_filament
         void addCollisionComponent(EntityId entity, void (*onCollisionCallback)(const EntityId entityId1, const EntityId entityId2), bool affectsCollidingTransform);
         void removeCollisionComponent(EntityId entityId);
         EntityId getParent(EntityId child);
-        void setParent(EntityId child, EntityId parent);
+        EntityId getAncestor(EntityId child);
+        void setParent(EntityId child, EntityId parent, bool preserveScaling);
         bool addAnimationComponent(EntityId entity);
         void removeAnimationComponent(EntityId entity);
 
+        /// @brief renders an outline around the specified entity.
+        ///
+        ///
+        void setStencilHighlight(EntityId entity, float r, float g, float b);
+
+        /// @brief removes the outline around the specified entity.
+        ///
+        ///        
+        void removeStencilHighlight(EntityId entity);
+
         /// @brief returns the number of instances of the FilamentAsset represented by the given entity.
         /// @param entityId
         /// @return the number of instances
@@ -164,24 +222,97 @@ namespace thermion_filament
         ///
         void setPriority(EntityId entity, int priority);
 
-        /// @brief returns the gizmo entity, used to manipulate the global transform for entities
+        /// @brief returns the 2D min/max viewport coordinates of the bounding box for the specified enitty;
-        /// @param out a pointer to an array of three EntityId {x, y, z}
+        /// @param out a pointer large enough to store four floats (the min/max coordinates of the bounding box)
         /// @return
         ///
-        void getGizmo(EntityId *out);
+        Aabb2 getBoundingBox(EntityId entity);
+
+        ///
+        /// Toggles the visibility of the given layer.
+        ///
+        void setLayerVisibility(SceneManager::LAYERS layer, bool enabled);
+
+        ///
+        /// Creates an entity with the specified geometry/material/normals and adds to the scene.
+        /// If [keepData] is true, stores 
+        ///
+        EntityId createGeometry(
+            float *vertices, 
+            uint32_t numVertices, 
+            float *normals,
+            uint32_t numNormals,
+            float *uvs,
+            uint32_t numUvs,
+            uint16_t *indices, 
+            uint32_t numIndices, 
+            filament::RenderableManager::PrimitiveType primitiveType = RenderableManager::PrimitiveType::TRIANGLES, 
+            MaterialInstance* materialInstance = nullptr,
+            bool keepData = false
+        );
 
         friend class FilamentViewer;
 
+        Gizmo* gizmo = nullptr;
+
+        gltfio::MaterialProvider * const unlitMaterialProvider() {
+            return _unlitMaterialProvider;
+        }
+
+        bool isGeometryEntity(EntityId entity) {
+            return _geometry.find(entity) != _geometry.end();
+        }
+
+        const CustomGeometry* const getGeometry(EntityId entityId) {
+            return _geometry[entityId].get();
+        }
+
+        Scene* const getScene() { 
+            return _scene;
+        }
+
+        bool isGltfAsset(EntityId entity) {
+            return getAssetByEntityId(entity) != nullptr;
+        }
+
+        gltfio::FilamentInstance *getInstanceByEntityId(EntityId entityId);
+        gltfio::FilamentAsset *getAssetByEntityId(EntityId entityId);
+
+        gltfio::FilamentInstance *createGltfAssetInstance(FilamentAsset* asset) {
+            return _assetLoader->createInstance(asset);
+        }
+
+        MaterialInstance* getMaterialInstanceAt(EntityId entityId, int materialIndex);
+
+        void setMaterialProperty(EntityId entity, int materialIndex, const char* property, float value);
+        void setMaterialProperty(EntityId entity, int materialIndex, const char* property, int32_t value);
+        void setMaterialProperty(EntityId entityId, int materialIndex, const char* property, filament::math::float4& value);
+
+        MaterialInstance* createUbershaderMaterialInstance(MaterialKey key);
+        void destroy(MaterialInstance* materialInstance);
+
+        gltfio::MaterialProvider* getUbershaderProvider() {
+            return _ubershaderProvider;
+        }
+
+        MaterialInstance* createUnlitMaterialInstance();
+
+        void setVisibilityLayer(EntityId entityId, int layer);
+
     private:
         gltfio::AssetLoader *_assetLoader = nullptr;
         const ResourceLoaderWrapperImpl *const _resourceLoaderWrapper;
-        Engine *_engine;
+        Engine *_engine = nullptr;
-        Scene *_scene;
+        Scene *_scene = nullptr;       
+        View* _view = nullptr;
+
         gltfio::MaterialProvider *_ubershaderProvider = nullptr;
+        gltfio::MaterialProvider *_unlitMaterialProvider = nullptr;
         gltfio::ResourceLoader *_gltfResourceLoader = nullptr;
         gltfio::TextureProvider *_stbDecoder = nullptr;
         gltfio::TextureProvider *_ktxDecoder = nullptr;
         std::mutex _mutex;
+        std::mutex _stencilMutex;
 
         utils::NameComponentManager *_ncm;
 
@@ -190,22 +321,20 @@ namespace thermion_filament
             gltfio::FilamentInstance *>
             _instances;
         tsl::robin_map<EntityId, gltfio::FilamentAsset *> _assets;
+        tsl::robin_map<EntityId, unique_ptr<CustomGeometry>> _geometry;
+        tsl::robin_map<EntityId, unique_ptr<HighlightOverlay>> _highlighted;        
         tsl::robin_map<EntityId, std::tuple<math::float3, bool, math::quatf, bool, float>> _transformUpdates;
+        std::set<Texture*> _textures;
 
         AnimationComponentManager *_animationComponentManager = nullptr;
         CollisionComponentManager *_collisionComponentManager = nullptr;
 
-        gltfio::FilamentInstance *getInstanceByEntityId(EntityId entityId);
-        gltfio::FilamentAsset *getAssetByEntityId(EntityId entityId);
-
         utils::Entity findEntityByName(
             const gltfio::FilamentInstance *instance,
             const char *entityName);
 
-        EntityId addGizmo();
+        GridOverlay* _gridOverlay = nullptr;     
-        utils::Entity _gizmo[3];
+        
-        Material* _gizmoMaterial;
-        MaterialInstance* _gizmoMaterialInstances[3];
 
     };
 }

thermion_dart/native/include/ThermionDartApi.h

@@ -46,77 +46,87 @@
 #include <stddef.h>
 #endif
 
+#include "APIBoundaryTypes.h"
 #include "ResourceBuffer.hpp"
 
-typedef int32_t EntityId;
-typedef int32_t _ManipulatorMode;
-
 #ifdef __cplusplus
 extern "C"
 {
 #endif
 
-	EMSCRIPTEN_KEEPALIVE const void *create_filament_viewer(const void *const context, const void *const loader, void *const platform, const char *uberArchivePath);
+	EMSCRIPTEN_KEEPALIVE TViewer *create_filament_viewer(const void *const context, const void *const loader, void *const platform, const char *uberArchivePath);
-	EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE void *get_scene_manager(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void *get_scene_manager(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE void create_render_target(const void *const viewer, intptr_t texture, uint32_t width, uint32_t height);
+	
-	EMSCRIPTEN_KEEPALIVE void clear_background_image(const void *const viewer);
+	// Engine
-	EMSCRIPTEN_KEEPALIVE void set_background_image(const void *const viewer, const char *path, bool fillHeight);
+	EMSCRIPTEN_KEEPALIVE TEngine *Viewer_getEngine(TViewer* viewer);
-	EMSCRIPTEN_KEEPALIVE void set_background_image_position(const void *const viewer, float x, float y, bool clamp);
+	EMSCRIPTEN_KEEPALIVE TCamera *Engine_getCameraComponent(TEngine* tEngine, EntityId entityId);
-	EMSCRIPTEN_KEEPALIVE void set_background_color(const void *const viewer, const float r, const float g, const float b, const float a);
+
-	EMSCRIPTEN_KEEPALIVE void set_tone_mapping(const void *const viewer, int toneMapping);
+	EMSCRIPTEN_KEEPALIVE void create_render_target(TViewer *viewer, intptr_t texture, uint32_t width, uint32_t height);
-	EMSCRIPTEN_KEEPALIVE void set_bloom(const void *const viewer, float strength);
+	EMSCRIPTEN_KEEPALIVE void clear_background_image(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE void load_skybox(const void *const viewer, const char *skyboxPath);
+	EMSCRIPTEN_KEEPALIVE void set_background_image(TViewer *viewer, const char *path, bool fillHeight);
-	EMSCRIPTEN_KEEPALIVE void load_ibl(const void *const viewer, const char *iblPath, float intensity);
+	EMSCRIPTEN_KEEPALIVE void set_background_image_position(TViewer *viewer, float x, float y, bool clamp);
-	EMSCRIPTEN_KEEPALIVE void rotate_ibl(const void *const viewer, float *rotationMatrix);
+	EMSCRIPTEN_KEEPALIVE void set_background_color(TViewer *viewer, const float r, const float g, const float b, const float a);
-	EMSCRIPTEN_KEEPALIVE void remove_skybox(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void set_tone_mapping(TViewer *viewer, int toneMapping);
-	EMSCRIPTEN_KEEPALIVE void remove_ibl(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void set_bloom(TViewer *viewer, float strength);
+	EMSCRIPTEN_KEEPALIVE void load_skybox(TViewer *viewer, const char *skyboxPath);
+	EMSCRIPTEN_KEEPALIVE void load_ibl(TViewer *viewer, const char *iblPath, float intensity);
+	EMSCRIPTEN_KEEPALIVE void create_ibl(TViewer *viewer, float r, float g, float b, float intensity);
+	EMSCRIPTEN_KEEPALIVE void rotate_ibl(TViewer *viewer, float *rotationMatrix);
+	EMSCRIPTEN_KEEPALIVE void remove_skybox(TViewer *viewer);
+	EMSCRIPTEN_KEEPALIVE void remove_ibl(TViewer *viewer);
 	EMSCRIPTEN_KEEPALIVE EntityId add_light(
-		const void *const viewer, 
+		TViewer *viewer,
-		uint8_t type, 
+		uint8_t type,
-		float colour, 
+		float colour,
-		float intensity, 
+		float intensity,
-		float posX, 
+		float posX,
-		float posY, 
+		float posY,
-		float posZ, 
+		float posZ,
-		float dirX, 
+		float dirX,
-		float dirY, 
+		float dirY,
-		float dirZ, 
+		float dirZ,
 		float falloffRadius,
-    	float spotLightConeInner,
+		float spotLightConeInner,
-    	float spotLightConeOuter,
+		float spotLightConeOuter,
 		float sunAngularRadius,
 		float sunHaloSize,
 		float sunHaloFallof,
 		bool shadows);
-	EMSCRIPTEN_KEEPALIVE void remove_light(const void *const viewer, EntityId entityId);
+	EMSCRIPTEN_KEEPALIVE void remove_light(TViewer *viewer, EntityId entityId);
-	EMSCRIPTEN_KEEPALIVE void clear_lights(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void clear_lights(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE EntityId load_glb(void *sceneManager, const char *assetPath, int numInstances);
+	EMSCRIPTEN_KEEPALIVE void set_light_position(TViewer *viewer, EntityId light, float x, float y, float z);
-	EMSCRIPTEN_KEEPALIVE EntityId load_glb_from_buffer(void *sceneManager, const void *const data, size_t length);
+	EMSCRIPTEN_KEEPALIVE void set_light_direction(TViewer *viewer, EntityId light, float x, float y, float z);
-	EMSCRIPTEN_KEEPALIVE EntityId load_gltf(void *sceneManager, const char *assetPath, const char *relativePath);
+	EMSCRIPTEN_KEEPALIVE EntityId load_glb(void *sceneManager, const char *assetPath, int numInstances, bool keepData);
+	EMSCRIPTEN_KEEPALIVE EntityId load_glb_from_buffer(void *sceneManager, const void *const data, size_t length, bool keepData, int priority, int layer);
+	EMSCRIPTEN_KEEPALIVE EntityId load_gltf(void *sceneManager, const char *assetPath, const char *relativePath, bool keepData);
 	EMSCRIPTEN_KEEPALIVE EntityId create_instance(void *sceneManager, EntityId id);
 	EMSCRIPTEN_KEEPALIVE int get_instance_count(void *sceneManager, EntityId entityId);
 	EMSCRIPTEN_KEEPALIVE void get_instances(void *sceneManager, EntityId entityId, EntityId *out);
-	EMSCRIPTEN_KEEPALIVE void set_main_camera(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void set_main_camera(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE EntityId get_main_camera(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE EntityId get_main_camera(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE bool set_camera(const void *const viewer, EntityId entity, const char *nodeName);
+	EMSCRIPTEN_KEEPALIVE bool set_camera(TViewer *viewer, EntityId entity, const char *nodeName);
-	EMSCRIPTEN_KEEPALIVE void set_view_frustum_culling(const void *const viewer, bool enabled);
+	EMSCRIPTEN_KEEPALIVE void set_view_frustum_culling(TViewer *viewer, bool enabled);
-	EMSCRIPTEN_KEEPALIVE void render(
+	EMSCRIPTEN_KEEPALIVE bool render(
-		const void *const viewer,
+		TViewer *viewer,
 		uint64_t frameTimeInNanos,
 		void *pixelBuffer,
 		void (*callback)(void *buf, size_t size, void *data),
 		void *data);
-	EMSCRIPTEN_KEEPALIVE void create_swap_chain(const void *const viewer, const void *const window, uint32_t width, uint32_t height);
+	EMSCRIPTEN_KEEPALIVE void capture(
-	EMSCRIPTEN_KEEPALIVE void destroy_swap_chain(const void *const viewer);
+		TViewer *viewer,
-	EMSCRIPTEN_KEEPALIVE void set_frame_interval(const void *const viewer, float interval);
+		uint8_t *pixelBuffer,
-	EMSCRIPTEN_KEEPALIVE void update_viewport_and_camera_projection(const void *const viewer, uint32_t width, uint32_t height, float scaleFactor);
+		void (*callback)(void));
-	EMSCRIPTEN_KEEPALIVE void scroll_begin(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void create_swap_chain(TViewer *viewer, const void *const window, uint32_t width, uint32_t height);
-	EMSCRIPTEN_KEEPALIVE void scroll_update(const void *const viewer, float x, float y, float z);
+	EMSCRIPTEN_KEEPALIVE void destroy_swap_chain(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE void scroll_end(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void set_frame_interval(TViewer *viewer, float interval);
-	EMSCRIPTEN_KEEPALIVE void grab_begin(const void *const viewer, float x, float y, bool pan);
+	EMSCRIPTEN_KEEPALIVE void update_viewport(TViewer *viewer, uint32_t width, uint32_t height);
-	EMSCRIPTEN_KEEPALIVE void grab_update(const void *const viewer, float x, float y);
+	EMSCRIPTEN_KEEPALIVE void scroll_begin(TViewer *viewer);
-	EMSCRIPTEN_KEEPALIVE void grab_end(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void scroll_update(TViewer *viewer, float x, float y, float z);
+	EMSCRIPTEN_KEEPALIVE void scroll_end(TViewer *viewer);
+	EMSCRIPTEN_KEEPALIVE void grab_begin(TViewer *viewer, float x, float y, bool pan);
+	EMSCRIPTEN_KEEPALIVE void grab_update(TViewer *viewer, float x, float y);
+	EMSCRIPTEN_KEEPALIVE void grab_end(TViewer *viewer);
 	EMSCRIPTEN_KEEPALIVE void apply_weights(
 		void *sceneManager,
 		EntityId entity,
@@ -136,6 +146,11 @@ extern "C"
 		int numMorphTargets,
 		int numFrames,
 		float frameLengthInMs);
+	
+	EMSCRIPTEN_KEEPALIVE TMaterialInstance *create_material_instance(void *const sceneManager, TMaterialKey materialConfig);
+	EMSCRIPTEN_KEEPALIVE TMaterialInstance *create_unlit_material_instance(void *const sceneManager);
+	EMSCRIPTEN_KEEPALIVE void destroy_material_instance(void *const sceneManager, TMaterialInstance *instance);
+
 	EMSCRIPTEN_KEEPALIVE void clear_morph_animation(
 		void *sceneManager,
 		EntityId entity);
@@ -155,82 +170,86 @@ extern "C"
 		float fadeInInSecs,
 		float maxDelta);
 	EMSCRIPTEN_KEEPALIVE void get_local_transform(void *sceneManager,
-        EntityId entityId, float* const);
+												  EntityId entityId, float *const);
 	EMSCRIPTEN_KEEPALIVE void get_rest_local_transforms(void *sceneManager,
-        EntityId entityId, int skinIndex, float* const out, int numBones);
+														EntityId entityId, int skinIndex, float *const out, int numBones);
 	EMSCRIPTEN_KEEPALIVE void get_world_transform(void *sceneManager,
-        EntityId entityId, float* const);
+												  EntityId entityId, float *const);
 	EMSCRIPTEN_KEEPALIVE void get_inverse_bind_matrix(void *sceneManager,
-        EntityId entityId, int skinIndex, int boneIndex, float* const);
+													  EntityId entityId, int skinIndex, int boneIndex, float *const);
 	EMSCRIPTEN_KEEPALIVE bool set_bone_transform(
 		void *sceneManager,
 		EntityId entity,
 		int skinIndex,
 		int boneIndex,
 		const float *const transform);
-	EMSCRIPTEN_KEEPALIVE void play_animation(void *sceneManager, EntityId entity, int index, bool loop, bool reverse, bool replaceActive, float crossfade);
+	EMSCRIPTEN_KEEPALIVE void play_animation(void *sceneManager, EntityId entity, int index, bool loop, bool reverse, bool replaceActive, float crossfade, float startOffset);
 	EMSCRIPTEN_KEEPALIVE void set_animation_frame(void *sceneManager, EntityId entity, int animationIndex, int animationFrame);
 	EMSCRIPTEN_KEEPALIVE void stop_animation(void *sceneManager, EntityId entity, int index);
 	EMSCRIPTEN_KEEPALIVE int get_animation_count(void *sceneManager, EntityId asset);
 	EMSCRIPTEN_KEEPALIVE void get_animation_name(void *sceneManager, EntityId entity, char *const outPtr, int index);
 	EMSCRIPTEN_KEEPALIVE float get_animation_duration(void *sceneManager, EntityId entity, int index);
 	EMSCRIPTEN_KEEPALIVE int get_bone_count(void *sceneManager, EntityId assetEntity, int skinIndex);
-	EMSCRIPTEN_KEEPALIVE void get_bone_names(void *sceneManager, EntityId assetEntity, const char** outPtr, int skinIndex);
+	EMSCRIPTEN_KEEPALIVE void get_bone_names(void *sceneManager, EntityId assetEntity, const char **outPtr, int skinIndex);
 	EMSCRIPTEN_KEEPALIVE EntityId get_bone(void *sceneManager,
-        EntityId entityId,
+										   EntityId entityId,
-        int skinIndex,
+										   int skinIndex,
-        int boneIndex);
+										   int boneIndex);
-	EMSCRIPTEN_KEEPALIVE bool set_transform(void* sceneManager, EntityId entityId, const float* const transform);
+	EMSCRIPTEN_KEEPALIVE bool set_transform(void *sceneManager, EntityId entityId, const float *const transform);
-	EMSCRIPTEN_KEEPALIVE bool update_bone_matrices(void* sceneManager, EntityId entityId);
+	EMSCRIPTEN_KEEPALIVE bool update_bone_matrices(void *sceneManager, EntityId entityId);
 	EMSCRIPTEN_KEEPALIVE void get_morph_target_name(void *sceneManager, EntityId assetEntity, EntityId childEntity, char *const outPtr, int index);
 	EMSCRIPTEN_KEEPALIVE int get_morph_target_name_count(void *sceneManager, EntityId assetEntity, EntityId childEntity);
-	EMSCRIPTEN_KEEPALIVE void remove_entity(const void *const viewer, EntityId asset);
+	EMSCRIPTEN_KEEPALIVE void remove_entity(TViewer *viewer, EntityId asset);
-	EMSCRIPTEN_KEEPALIVE void clear_entities(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void clear_entities(TViewer *viewer);
 	EMSCRIPTEN_KEEPALIVE bool set_material_color(void *sceneManager, EntityId entity, const char *meshName, int materialIndex, const float r, const float g, const float b, const float a);
 	EMSCRIPTEN_KEEPALIVE void transform_to_unit_cube(void *sceneManager, EntityId asset);
 	EMSCRIPTEN_KEEPALIVE void queue_position_update(void *sceneManager, EntityId entity, float x, float y, float z, bool relative);
+	EMSCRIPTEN_KEEPALIVE void queue_relative_position_update_world_axis(void *sceneManager, EntityId entity, float viewportX, float viewportY, float x, float y, float z);
+	EMSCRIPTEN_KEEPALIVE void queue_position_update_from_viewport_coords(void *sceneManager, EntityId entity, float viewportX, float viewportY);
 	EMSCRIPTEN_KEEPALIVE void queue_rotation_update(void *sceneManager, EntityId entity, float rads, float x, float y, float z, float w, bool relative);
 	EMSCRIPTEN_KEEPALIVE void set_position(void *sceneManager, EntityId entity, float x, float y, float z);
 	EMSCRIPTEN_KEEPALIVE void set_rotation(void *sceneManager, EntityId entity, float rads, float x, float y, float z, float w);
 	EMSCRIPTEN_KEEPALIVE void set_scale(void *sceneManager, EntityId entity, float scale);
 
 	// Camera methods
-	EMSCRIPTEN_KEEPALIVE void move_camera_to_asset(const void *const viewer, EntityId asset);
+	EMSCRIPTEN_KEEPALIVE void set_view_frustum_culling(TViewer *viewer, bool enabled);
-	EMSCRIPTEN_KEEPALIVE void set_view_frustum_culling(const void *const viewer, bool enabled);
+	EMSCRIPTEN_KEEPALIVE void set_camera_exposure(TCamera *camera, float aperture, float shutterSpeed, float sensitivity);
-	EMSCRIPTEN_KEEPALIVE void set_camera_exposure(const void *const viewer, float aperture, float shutterSpeed, float sensitivity);
+	EMSCRIPTEN_KEEPALIVE void set_camera_model_matrix(TCamera *camera, double4x4 matrix);
-	EMSCRIPTEN_KEEPALIVE void set_camera_position(const void *const viewer, float x, float y, float z);
+	EMSCRIPTEN_KEEPALIVE TCamera *get_camera(TViewer *viewer, EntityId entity);
-	EMSCRIPTEN_KEEPALIVE void get_camera_position(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE double get_camera_focal_length(TCamera *const camera);
-	EMSCRIPTEN_KEEPALIVE void set_camera_rotation(const void *const viewer, float w, float x, float y, float z);
+	EMSCRIPTEN_KEEPALIVE double4x4 get_camera_model_matrix(TCamera *const camera);
-	EMSCRIPTEN_KEEPALIVE void set_camera_model_matrix(const void *const viewer, const float *const matrix);
+	EMSCRIPTEN_KEEPALIVE double4x4 get_camera_view_matrix(TCamera *const camera);
-	EMSCRIPTEN_KEEPALIVE const double *const get_camera_model_matrix(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE double4x4 get_camera_projection_matrix(TCamera *const camera);
-	EMSCRIPTEN_KEEPALIVE const double *const get_camera_view_matrix(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE double4x4 get_camera_culling_projection_matrix(TCamera *const camera);
-	EMSCRIPTEN_KEEPALIVE const double *const get_camera_projection_matrix(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE const double *const get_camera_frustum(TCamera *const camera);
-	EMSCRIPTEN_KEEPALIVE void set_camera_projection_matrix(const void *const viewer, const double *const matrix, double near, double far);
+	EMSCRIPTEN_KEEPALIVE void set_camera_projection_matrix(TCamera *camera, double4x4 matrix, double near, double far);
-	EMSCRIPTEN_KEEPALIVE void set_camera_culling(const void *const viewer, double near, double far);
+	EMSCRIPTEN_KEEPALIVE void set_camera_projection_from_fov(TCamera *camera, double fovInDegrees, double aspect, double near, double far, bool horizontal);
-	EMSCRIPTEN_KEEPALIVE double get_camera_culling_near(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE double get_camera_near(TCamera *camera);
-	EMSCRIPTEN_KEEPALIVE double get_camera_culling_far(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE double get_camera_culling_far(TCamera *camera);
-	EMSCRIPTEN_KEEPALIVE const double *const get_camera_culling_projection_matrix(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE float get_camera_fov(TCamera *camera, bool horizontal);
-	EMSCRIPTEN_KEEPALIVE const double *const get_camera_frustum(const void *const viewer);
+	EMSCRIPTEN_KEEPALIVE void set_camera_lens_projection(TCamera *camera, double near, double far, double aspect, double focalLength);
-	EMSCRIPTEN_KEEPALIVE void set_camera_fov(const void *const viewer, float fovInDegrees, float aspect);
+	EMSCRIPTEN_KEEPALIVE void set_camera_focus_distance(TCamera *camera, float focusDistance);
-	EMSCRIPTEN_KEEPALIVE void set_camera_focal_length(const void *const viewer, float focalLength);
+	EMSCRIPTEN_KEEPALIVE void set_camera_manipulator_options(TViewer *viewer, _ManipulatorMode mode, double orbitSpeedX, double orbitSpeedY, double zoomSpeed);
-	EMSCRIPTEN_KEEPALIVE void set_camera_focus_distance(const void *const viewer, float focusDistance);
+	EMSCRIPTEN_KEEPALIVE void Camera_setCustomProjectionWithCulling(TCamera* camera, double4x4 projectionMatrix, double near, double far);
-	EMSCRIPTEN_KEEPALIVE void set_camera_manipulator_options(const void *const viewer, _ManipulatorMode mode, double orbitSpeedX, double orbitSpeedY, double zoomSpeed);
+	EMSCRIPTEN_KEEPALIVE TCamera *get_camera_component(TEngine *engine, EntityId entity);
+
+	
 
 	EMSCRIPTEN_KEEPALIVE int hide_mesh(void *sceneManager, EntityId entity, const char *meshName);
 	EMSCRIPTEN_KEEPALIVE int reveal_mesh(void *sceneManager, EntityId entity, const char *meshName);
-	EMSCRIPTEN_KEEPALIVE void set_post_processing(void *const viewer, bool enabled);
+	EMSCRIPTEN_KEEPALIVE void set_post_processing(TViewer *viewer, bool enabled);
-	EMSCRIPTEN_KEEPALIVE void set_shadows_enabled(void *const viewer, bool enabled);
+	EMSCRIPTEN_KEEPALIVE void set_shadows_enabled(TViewer *viewer, bool enabled);
-	EMSCRIPTEN_KEEPALIVE void set_shadow_type(void *const viewer, int shadowType);
+	EMSCRIPTEN_KEEPALIVE void set_shadow_type(TViewer *viewer, int shadowType);
-	EMSCRIPTEN_KEEPALIVE void set_soft_shadow_options(void *const viewer, float penumbraScale, float penumbraRatioScale);
+	EMSCRIPTEN_KEEPALIVE void set_soft_shadow_options(TViewer *viewer, float penumbraScale, float penumbraRatioScale);
-	EMSCRIPTEN_KEEPALIVE void set_antialiasing(void *const viewer, bool msaa, bool fxaa, bool taa);
+	EMSCRIPTEN_KEEPALIVE void set_antialiasing(TViewer *viewer, bool msaa, bool fxaa, bool taa);
-	EMSCRIPTEN_KEEPALIVE void filament_pick(void *const viewer, int x, int y, void (*callback)(EntityId entityId, int x, int y));
+	EMSCRIPTEN_KEEPALIVE void filament_pick(TViewer *viewer, int x, int y, void (*callback)(EntityId entityId, int x, int y));
 	EMSCRIPTEN_KEEPALIVE const char *get_name_for_entity(void *const sceneManager, const EntityId entityId);
 	EMSCRIPTEN_KEEPALIVE EntityId find_child_entity_by_name(void *const sceneManager, const EntityId parent, const char *name);
 	EMSCRIPTEN_KEEPALIVE int get_entity_count(void *const sceneManager, const EntityId target, bool renderableOnly);
 	EMSCRIPTEN_KEEPALIVE void get_entities(void *const sceneManager, const EntityId target, bool renderableOnly, EntityId *out);
 	EMSCRIPTEN_KEEPALIVE const char *get_entity_name_at(void *const sceneManager, const EntityId target, int index, bool renderableOnly);
-	EMSCRIPTEN_KEEPALIVE void set_recording(void *const viewer, bool recording);
+	EMSCRIPTEN_KEEPALIVE void set_recording(TViewer *viewer, bool recording);
-	EMSCRIPTEN_KEEPALIVE void set_recording_output_directory(void *const viewer, const char *outputDirectory);
+	EMSCRIPTEN_KEEPALIVE void set_recording_output_directory(TViewer *viewer, const char *outputDirectory);
 	EMSCRIPTEN_KEEPALIVE void ios_dummy();
 	EMSCRIPTEN_KEEPALIVE void thermion_flutter_free(void *ptr);
 	EMSCRIPTEN_KEEPALIVE void add_collision_component(void *const sceneManager, EntityId entityId, void (*callback)(const EntityId entityId1, const EntityId entityId2), bool affectsCollidingTransform);
@@ -238,12 +257,47 @@ extern "C"
 	EMSCRIPTEN_KEEPALIVE bool add_animation_component(void *const sceneManager, EntityId entityId);
 	EMSCRIPTEN_KEEPALIVE void remove_animation_component(void *const sceneManager, EntityId entityId);
 
-	EMSCRIPTEN_KEEPALIVE EntityId create_geometry(void *const viewer, float *vertices, int numVertices, uint16_t *indices, int numIndices, int primitiveType, const char *materialPath);
+	EMSCRIPTEN_KEEPALIVE EntityId create_geometry(
+		void *const sceneManager, 
+		float *vertices, 
+		int numVertices, 
+		float *normals, 
+		int numNormals, 
+		float *uvs, 
+		int numUvs, 
+		uint16_t *indices, 
+		int numIndices, 
+		int primitiveType, 
+		TMaterialInstance *materialInstance, 
+		bool keepData);
 	EMSCRIPTEN_KEEPALIVE EntityId get_parent(void *const sceneManager, EntityId child);
-	EMSCRIPTEN_KEEPALIVE void set_parent(void *const sceneManager, EntityId child, EntityId parent);
+	EMSCRIPTEN_KEEPALIVE EntityId get_ancestor(void *const sceneManager, EntityId child);
+	EMSCRIPTEN_KEEPALIVE void set_parent(void *const sceneManager, EntityId child, EntityId parent, bool preserveScaling);
 	EMSCRIPTEN_KEEPALIVE void test_collisions(void *const sceneManager, EntityId entity);
 	EMSCRIPTEN_KEEPALIVE void set_priority(void *const sceneManager, EntityId entityId, int priority);
 	EMSCRIPTEN_KEEPALIVE void get_gizmo(void *const sceneManager, EntityId *out);
+	EMSCRIPTEN_KEEPALIVE Aabb2 get_bounding_box(void *const sceneManager, EntityId entity);
+	EMSCRIPTEN_KEEPALIVE void get_bounding_box_to_out(void *const sceneManager, EntityId entity, float *minX, float *minY, float *maxX, float *maxY);
+	EMSCRIPTEN_KEEPALIVE void set_layer_visibility(void *const sceneManager, int layer, bool visible);
+	EMSCRIPTEN_KEEPALIVE void set_visibility_layer(void *const sceneManager, EntityId entity, int layer);
+	EMSCRIPTEN_KEEPALIVE void pick_gizmo(void *const sceneManager, int x, int y, void (*callback)(EntityId entityId, int x, int y));
+	EMSCRIPTEN_KEEPALIVE void set_gizmo_visibility(void *const sceneManager, bool visible);
+	EMSCRIPTEN_KEEPALIVE void set_stencil_highlight(void *const sceneManager, EntityId entity, float r, float g, float b);
+	EMSCRIPTEN_KEEPALIVE void remove_stencil_highlight(void *const sceneManager, EntityId entity);
+	EMSCRIPTEN_KEEPALIVE void set_material_property_float(void *const sceneManager, EntityId entity, int materialIndex, const char *property, float value);
+	EMSCRIPTEN_KEEPALIVE void set_material_property_int(void *const sceneManager, EntityId entity, int materialIndex, const char *property, int value);
+	EMSCRIPTEN_KEEPALIVE void set_material_property_float4(void *const sceneManager, EntityId entity, int materialIndex, const char *property, double4 value);
+	EMSCRIPTEN_KEEPALIVE void set_material_depth_write(void *const sceneManager, EntityId entity, int materialIndex, bool enabled);
+	EMSCRIPTEN_KEEPALIVE void unproject_texture(TViewer* viewer, EntityId entity,uint8_t* input, uint32_t inputWidth, uint32_t inputHeight, uint8_t *out, uint32_t outWidth, uint32_t outHeight);
+	EMSCRIPTEN_KEEPALIVE void *const create_texture(void *const sceneManager, uint8_t *data, size_t length);
+	EMSCRIPTEN_KEEPALIVE void destroy_texture(void *const sceneManager, void *const texture);
+	EMSCRIPTEN_KEEPALIVE void apply_texture_to_material(void *const sceneManager, EntityId entity, void *const texture, const char *parameterName, int materialIndex);
+
+	EMSCRIPTEN_KEEPALIVE TMaterialInstance* get_material_instance_at(void *const sceneManager, EntityId entity, int materialIndex);
+	
+	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setDepthWrite(TMaterialInstance* materialInstance, bool enabled);
+	EMSCRIPTEN_KEEPALIVE void MaterialInstance_setDepthCulling(TMaterialInstance* materialInstance, bool enabled);
+
 
 #ifdef __cplusplus
 }

thermion_dart/native/include/ThermionDartFFIApi.h

@@ -1,112 +0,0 @@
-#ifndef _DART_FILAMENT_FFI_API_H
-#define _DART_FILAMENT_FFI_API_H
-
-#include "ThermionDartApi.h"
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-    ///
-    /// This header replicates most of the methods in ThermionDartApi.h. 
-    /// It represents the interface for:
-    /// - invoking those methods that must be called on the main Filament engine thread
-    /// - setting up a render loop
-    ///
-    typedef int32_t EntityId;
-    typedef void (*FilamentRenderCallback)(void *const owner);
-
-    EMSCRIPTEN_KEEPALIVE void create_filament_viewer_ffi(
-        void *const context,
-        void *const platform,
-        const char *uberArchivePath,
-        const void *const loader,
-        void (*renderCallback)(void *const renderCallbackOwner),
-        void *const renderCallbackOwner,
-        void (*callback)(void *const viewer));
-    EMSCRIPTEN_KEEPALIVE void create_swap_chain_ffi(void *const viewer, void *const surface, uint32_t width, uint32_t height, void (*onComplete)());
-    EMSCRIPTEN_KEEPALIVE void destroy_swap_chain_ffi(void *const viewer, void (*onComplete)());
-    EMSCRIPTEN_KEEPALIVE void create_render_target_ffi(void *const viewer, intptr_t nativeTextureId, uint32_t width, uint32_t height, void (*onComplete)());
-    EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer_ffi(void *const viewer);
-    EMSCRIPTEN_KEEPALIVE void render_ffi(void *const viewer);
-    EMSCRIPTEN_KEEPALIVE FilamentRenderCallback make_render_callback_fn_pointer(FilamentRenderCallback);
-    EMSCRIPTEN_KEEPALIVE void set_rendering_ffi(void *const viewer, bool rendering, void(*onComplete)());
-    EMSCRIPTEN_KEEPALIVE void set_frame_interval_ffi(void *const viewer, float frameInterval);
-    EMSCRIPTEN_KEEPALIVE void update_viewport_and_camera_projection_ffi(void *const viewer, const uint32_t width, const uint32_t height, const float scaleFactor, void (*onComplete)());
-    EMSCRIPTEN_KEEPALIVE void set_background_color_ffi(void *const viewer, const float r, const float g, const float b, const float a);
-    EMSCRIPTEN_KEEPALIVE void clear_background_image_ffi(void *const viewer);
-    EMSCRIPTEN_KEEPALIVE void set_background_image_ffi(void *const viewer, const char *path, bool fillHeight, void (*onComplete)());
-    EMSCRIPTEN_KEEPALIVE void set_background_image_position_ffi(void *const viewer, float x, float y, bool clamp);
-    EMSCRIPTEN_KEEPALIVE void set_tone_mapping_ffi(void *const viewer, int toneMapping);
-    EMSCRIPTEN_KEEPALIVE void set_bloom_ffi(void *const viewer, float strength);
-    EMSCRIPTEN_KEEPALIVE void load_skybox_ffi(void *const viewer, const char *skyboxPath, void (*onComplete)());
-    EMSCRIPTEN_KEEPALIVE void load_ibl_ffi(void *const viewer, const char *iblPath, float intensity);
-    EMSCRIPTEN_KEEPALIVE void remove_skybox_ffi(void *const viewer);
-    EMSCRIPTEN_KEEPALIVE void remove_ibl_ffi(void *const viewer);
-    EMSCRIPTEN_KEEPALIVE void add_light_ffi(
-        void *const viewer,
-        uint8_t type,
-        float colour,
-        float intensity,
-        float posX,
-        float posY,
-        float posZ,
-        float dirX,
-        float dirY,
-        float dirZ,
-        float falloffRadius,
-        float spotLightConeInner,
-        float spotLightConeOuter,
-        float sunAngularRadius,
-        float sunHaloSize,
-        float sunHaloFallof,
-        bool shadows,
-        void (*callback)(EntityId));
-    EMSCRIPTEN_KEEPALIVE void remove_light_ffi(void *const viewer, EntityId entityId);
-    EMSCRIPTEN_KEEPALIVE void clear_lights_ffi(void *const viewer);
-    EMSCRIPTEN_KEEPALIVE void load_glb_ffi(void *const sceneManager, const char *assetPath, int numInstances, void (*callback)(EntityId));
-    EMSCRIPTEN_KEEPALIVE void load_glb_from_buffer_ffi(void *const sceneManager, const void *const data, size_t length, int numInstances, void (*callback)(EntityId));
-    EMSCRIPTEN_KEEPALIVE void load_gltf_ffi(void *const sceneManager, const char *assetPath, const char *relativePath, void (*callback)(EntityId));
-    EMSCRIPTEN_KEEPALIVE void create_instance_ffi(void *const sceneManager, EntityId entityId, void (*callback)(EntityId));
-    EMSCRIPTEN_KEEPALIVE void remove_entity_ffi(void *const viewer, EntityId asset, void (*callback)());
-    EMSCRIPTEN_KEEPALIVE void clear_entities_ffi(void *const viewer, void (*callback)());
-    EMSCRIPTEN_KEEPALIVE void set_camera_ffi(void *const viewer, EntityId asset, const char *nodeName, void (*callback)(bool));
-    EMSCRIPTEN_KEEPALIVE void apply_weights_ffi(
-        void *const sceneManager,
-        EntityId asset,
-        const char *const entityName,
-        float *const weights,
-        int count);
-
-    EMSCRIPTEN_KEEPALIVE void play_animation_ffi(void *const sceneManager, EntityId asset, int index, bool loop, bool reverse, bool replaceActive, float crossfade);
-    EMSCRIPTEN_KEEPALIVE void set_animation_frame_ffi(void *const sceneManager, EntityId asset, int animationIndex, int animationFrame);
-    EMSCRIPTEN_KEEPALIVE void stop_animation_ffi(void *const sceneManager, EntityId asset, int index);
-    EMSCRIPTEN_KEEPALIVE void get_animation_count_ffi(void *const sceneManager, EntityId asset, void (*callback)(int));
-    EMSCRIPTEN_KEEPALIVE void get_animation_name_ffi(void *const sceneManager, EntityId asset, char *const outPtr, int index, void (*callback)());
-    EMSCRIPTEN_KEEPALIVE void get_morph_target_name_ffi(void *const sceneManager, EntityId assetEntity, EntityId childEntity, char *const outPtr, int index, void (*callback)());
-    EMSCRIPTEN_KEEPALIVE void get_morph_target_name_count_ffi(void *const sceneManager, EntityId asset, EntityId childEntity, void (*callback)(int32_t));
-    EMSCRIPTEN_KEEPALIVE void set_morph_target_weights_ffi(void *const sceneManager,
-                                                            EntityId asset,
-                                                            const float *const morphData,
-                                                            int numWeights,
-                                                            void (*callback)(bool));
-
-    EMSCRIPTEN_KEEPALIVE void update_bone_matrices_ffi(void *sceneManager,
-        EntityId asset, void(*callback)(bool));
-    EMSCRIPTEN_KEEPALIVE void set_bone_transform_ffi(
-        void *sceneManager,
-        EntityId asset,
-        int skinIndex, 
-        int boneIndex,
-        const float *const transform,
-        void (*callback)(bool));
-    EMSCRIPTEN_KEEPALIVE void set_post_processing_ffi(void *const viewer, bool enabled);
-    EMSCRIPTEN_KEEPALIVE void reset_to_rest_pose_ffi(void *const sceneManager, EntityId entityId, void(*callback)());
-    EMSCRIPTEN_KEEPALIVE void create_geometry_ffi(void *const viewer, float *vertices, int numVertices, uint16_t *indices, int numIndices, int primitiveType, const char *materialPath, void (*callback)(EntityId));
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // _DART_FILAMENT_FFI_API_H

thermion_dart/native/include/ThermionDartRenderThreadApi.h

@@ -0,0 +1,126 @@
+#ifndef _DART_FILAMENT_FFI_API_H
+#define _DART_FILAMENT_FFI_API_H
+
+#include "ThermionDartApi.h"
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+    ///
+    /// This header replicates most of the methods in ThermionDartApi.h. 
+    /// It represents the interface for:
+    /// - invoking those methods that must be called on the main Filament engine thread
+    /// - setting up a render loop
+    ///
+    typedef int32_t EntityId;
+    typedef void (*FilamentRenderCallback)(void *const owner);
+
+    EMSCRIPTEN_KEEPALIVE void create_filament_viewer_render_thread(
+        void *const context,
+        void *const platform,
+        const char *uberArchivePath,
+        const void *const loader,
+        void (*renderCallback)(void *const renderCallbackOwner),
+        void *const renderCallbackOwner,
+        void (*callback)(TViewer *viewer));
+    EMSCRIPTEN_KEEPALIVE void create_swap_chain_render_thread(TViewer *viewer, void *const surface, uint32_t width, uint32_t height, void (*onComplete)());
+    EMSCRIPTEN_KEEPALIVE void destroy_swap_chain_render_thread(TViewer *viewer, void (*onComplete)());
+    EMSCRIPTEN_KEEPALIVE void create_render_target_render_thread(TViewer *viewer, intptr_t nativeTextureId, uint32_t width, uint32_t height, void (*onComplete)());
+    EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer_render_thread(TViewer *viewer);
+    EMSCRIPTEN_KEEPALIVE void render_render_thread(TViewer *viewer);
+    EMSCRIPTEN_KEEPALIVE void capture_render_thread(TViewer *viewer, uint8_t* out, void (*onComplete)());
+    EMSCRIPTEN_KEEPALIVE FilamentRenderCallback make_render_callback_fn_pointer(FilamentRenderCallback);
+    EMSCRIPTEN_KEEPALIVE void set_rendering_render_thread(TViewer *viewer, bool rendering, void(*onComplete)());
+    EMSCRIPTEN_KEEPALIVE void request_frame_render_thread(TViewer *viewer);
+    EMSCRIPTEN_KEEPALIVE void set_frame_interval_render_thread(TViewer *viewer, float frameInterval);
+    EMSCRIPTEN_KEEPALIVE void set_background_color_render_thread(TViewer *viewer, const float r, const float g, const float b, const float a);
+    EMSCRIPTEN_KEEPALIVE void clear_background_image_render_thread(TViewer *viewer);
+    EMSCRIPTEN_KEEPALIVE void set_background_image_render_thread(TViewer *viewer, const char *path, bool fillHeight, void (*onComplete)());
+    EMSCRIPTEN_KEEPALIVE void set_background_image_position_render_thread(TViewer *viewer, float x, float y, bool clamp);
+    EMSCRIPTEN_KEEPALIVE void set_tone_mapping_render_thread(TViewer *viewer, int toneMapping);
+    EMSCRIPTEN_KEEPALIVE void set_bloom_render_thread(TViewer *viewer, float strength);
+    EMSCRIPTEN_KEEPALIVE void load_skybox_render_thread(TViewer *viewer, const char *skyboxPath, void (*onComplete)());
+    EMSCRIPTEN_KEEPALIVE void load_ibl_render_thread(TViewer *viewer, const char *iblPath, float intensity);
+    EMSCRIPTEN_KEEPALIVE void remove_skybox_render_thread(TViewer *viewer);
+    EMSCRIPTEN_KEEPALIVE void remove_ibl_render_thread(TViewer *viewer);
+    EMSCRIPTEN_KEEPALIVE void add_light_render_thread(
+        TViewer *viewer,
+        uint8_t type,
+        float colour,
+        float intensity,
+        float posX,
+        float posY,
+        float posZ,
+        float dirX,
+        float dirY,
+        float dirZ,
+        float falloffRadius,
+        float spotLightConeInner,
+        float spotLightConeOuter,
+        float sunAngularRadius,
+        float sunHaloSize,
+        float sunHaloFallof,
+        bool shadows,
+        void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void remove_light_render_thread(TViewer *viewer, EntityId entityId);
+    EMSCRIPTEN_KEEPALIVE void clear_lights_render_thread(TViewer *viewer);
+    EMSCRIPTEN_KEEPALIVE void load_glb_render_thread(void *const sceneManager, const char *assetPath, int numInstances, bool keepData, void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void load_glb_from_buffer_render_thread(void *const sceneManager, const uint8_t *const data, size_t length, int numInstances, bool keepData, int priority, int layer, void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void load_gltf_render_thread(void *const sceneManager, const char *assetPath, const char *relativePath, bool keepData, void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void create_instance_render_thread(void *const sceneManager, EntityId entityId, void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void remove_entity_render_thread(TViewer *viewer, EntityId asset, void (*callback)());
+    EMSCRIPTEN_KEEPALIVE void clear_entities_render_thread(TViewer *viewer, void (*callback)());
+    EMSCRIPTEN_KEEPALIVE void set_camera_render_thread(TViewer *viewer, EntityId asset, const char *nodeName, void (*callback)(bool));
+    EMSCRIPTEN_KEEPALIVE void apply_weights_render_thread(
+        void *const sceneManager,
+        EntityId asset,
+        const char *const entityName,
+        float *const weights,
+        int count);
+    EMSCRIPTEN_KEEPALIVE void set_animation_frame_render_thread(void *const sceneManager, EntityId asset, int animationIndex, int animationFrame);
+    EMSCRIPTEN_KEEPALIVE void stop_animation_render_thread(void *const sceneManager, EntityId asset, int index);
+    EMSCRIPTEN_KEEPALIVE void get_animation_count_render_thread(void *const sceneManager, EntityId asset, void (*callback)(int));
+    EMSCRIPTEN_KEEPALIVE void get_animation_name_render_thread(void *const sceneManager, EntityId asset, char *const outPtr, int index, void (*callback)());
+    EMSCRIPTEN_KEEPALIVE void get_morph_target_name_render_thread(void *const sceneManager, EntityId assetEntity, EntityId childEntity, char *const outPtr, int index, void (*callback)());
+    EMSCRIPTEN_KEEPALIVE void get_morph_target_name_count_render_thread(void *const sceneManager, EntityId asset, EntityId childEntity, void (*callback)(int32_t));
+    EMSCRIPTEN_KEEPALIVE void set_morph_target_weights_render_thread(void *const sceneManager,
+                                                            EntityId asset,
+                                                            const float *const morphData,
+                                                            int numWeights,
+                                                            void (*callback)(bool));
+
+    EMSCRIPTEN_KEEPALIVE void update_bone_matrices_render_thread(void *sceneManager,
+        EntityId asset, void(*callback)(bool));
+    EMSCRIPTEN_KEEPALIVE void set_bone_transform_render_thread(
+        void *sceneManager,
+        EntityId asset,
+        int skinIndex, 
+        int boneIndex,
+        const float *const transform,
+        void (*callback)(bool));
+    EMSCRIPTEN_KEEPALIVE void set_post_processing_render_thread(TViewer *viewer, bool enabled);
+    EMSCRIPTEN_KEEPALIVE void reset_to_rest_pose_render_thread(void *const sceneManager, EntityId entityId, void(*callback)());
+    EMSCRIPTEN_KEEPALIVE void create_geometry_render_thread(
+        void *const sceneManager, 
+        float *vertices, 
+        int numVertices, 
+        float *normals, 
+        int numNormals, 
+        float *uvs, 
+        int numUvs, 
+        uint16_t *indices, 
+        int numIndices, 
+        int primitiveType, 
+        TMaterialInstance *materialInstance, 
+        bool keepData, 
+        void (*callback)(EntityId));
+    EMSCRIPTEN_KEEPALIVE void unproject_texture_render_thread(TViewer* viewer, EntityId entity, uint8_t* input, uint32_t inputWidth, uint32_t inputHeight, uint8_t* out, uint32_t outWidth, uint32_t outHeight, void(*callback)());
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _DART_FILAMENT_FFI_API_H

thermion_dart/native/include/UnprojectTexture.hpp

@@ -0,0 +1,39 @@
+#include <filament/Engine.h>
+#include <filament/Camera.h>
+#include <filament/Texture.h>
+#include <filament/VertexBuffer.h>
+#include <filament/IndexBuffer.h>
+#include <filament/RenderableManager.h>
+#include <filament/TransformManager.h>
+#include <math/mat4.h>
+#include <math/vec2.h>
+#include <math/vec3.h>
+#include <math/vec4.h>
+#include <utils/EntityManager.h>
+#include <backend/PixelBufferDescriptor.h>
+
+#include <vector>
+#include <algorithm>
+
+#include "CustomGeometry.hpp"
+
+namespace thermion_filament {
+
+class UnprojectTexture {
+public:
+    UnprojectTexture(const CustomGeometry * geometry, Camera& camera, Engine* engine)
+        : _geometry(geometry), _camera(camera), _engine(engine) {}
+
+    void unproject(utils::Entity entity, const uint8_t* inputTexture, uint8_t* outputTexture, uint32_t inputWidth, uint32_t inputHeight,
+                       uint32_t outputWidth, uint32_t outputHeight);
+
+private:
+    const CustomGeometry * _geometry;
+    const Camera& _camera;
+    Engine* _engine;
+
+    math::float3 doUnproject(const math::float2& screenPos, float depth, const math::mat4& invViewProj);
+    bool isInsideTriangle(const math::float2& p, const math::float2& a, const math::float2& b, const math::float2& c);
+    math::float3 barycentric(const math::float2& p, const math::float2& a, const math::float2& b, const math::float2& c);
+};
+}

thermion_dart/native/include/components/AnimationComponentManager.hpp

@@ -43,6 +43,7 @@ namespace thermion_filament
     struct AnimationStatus
     {
         time_point_t start = time_point_t::max();
+        float startOffset;
         bool loop = false;
         bool reverse = false;
         float durationInSecs = 0;
@@ -182,7 +183,7 @@ namespace thermion_filament
 
                             auto animationStatus = animationComponent.gltfAnimations[i];
 
-                            auto elapsedInSecs = float(std::chrono::duration_cast<std::chrono::milliseconds>(now - animationStatus.start).count()) / 1000.0f;
+                            auto elapsedInSecs = animationStatus.startOffset + float(std::chrono::duration_cast<std::chrono::milliseconds>(now - animationStatus.start).count()) / 1000.0f;
 
                             if (!animationStatus.loop && elapsedInSecs >= animationStatus.durationInSecs)
                             {

thermion_dart/native/include/material/UnlitMaterialProvider.hpp

@@ -0,0 +1,67 @@
+#ifndef UNLIT_MATERIAL_PROVIDER_HPP
+#define UNLIT_MATERIAL_PROVIDER_HPP
+
+#include <filament/gltfio/MaterialProvider.h>
+#include <filament/Material.h>
+#include <filament/MaterialInstance.h>
+#include <filament/Texture.h>
+#include <filament/TextureSampler.h>
+#include <math/mat3.h>
+#include <math/vec3.h>
+#include <math/vec4.h>
+
+namespace thermion_filament {
+
+class UnlitMaterialProvider : public filament::gltfio::MaterialProvider {
+private:
+    filament::Material* mUnlitMaterial;
+    const filament::Material* mMaterials[1];
+    filament::Engine* mEngine;
+
+public:
+    UnlitMaterialProvider(filament::Engine* engine, const void* const data, const size_t size) : mEngine(engine) {
+        mUnlitMaterial = filament::Material::Builder()
+            .package(data, size)
+            .build(*engine);
+        mMaterials[0] = mUnlitMaterial;
+    }
+
+    ~UnlitMaterialProvider() {
+        mEngine->destroy(mUnlitMaterial);
+    }
+
+    filament::MaterialInstance* createMaterialInstance(filament::gltfio::MaterialKey* config, 
+                                                       filament::gltfio::UvMap* uvmap,
+                                                       const char* label = "unlit", 
+                                                       const char* extras = nullptr) override {
+        auto instance = mUnlitMaterial->createInstance();
+        return instance;
+    }
+
+    filament::Material* getMaterial(filament::gltfio::MaterialKey* config, 
+                                    filament::gltfio::UvMap* uvmap, 
+                                    const char* label = "unlit") override {
+        return mUnlitMaterial;
+    }
+
+    const filament::Material* const* getMaterials() const noexcept override {
+        return mMaterials;
+    }
+
+    size_t getMaterialsCount() const noexcept override {
+        return 1;
+    }
+
+    void destroyMaterials() override {
+        // Materials are destroyed in the destructor
+    }
+
+    bool needsDummyData(filament::VertexAttribute attrib) const noexcept override {
+        // For unlit material, we don't need dummy data for any attribute
+        return false;
+    }
+};
+
+} // namespace thermion_filament
+
+#endif // UNLIT_MATERIAL_PROVIDER_HPP

thermion_dart/native/include/material/gizmo.S

@@ -8,5 +8,5 @@ GIZMO_PACKAGE:
 GIZMO_GIZMO_OFFSET:
     .int 0
 GIZMO_GIZMO_SIZE:
-    .int 26876
+    .int 27809
 

thermion_dart/native/include/material/gizmo.apple.S

@@ -8,5 +8,5 @@ _GIZMO_PACKAGE:
 _GIZMO_GIZMO_OFFSET:
     .int 0
 _GIZMO_GIZMO_SIZE:
-    .int 26876
+    .int 27809
 

thermion_dart/native/include/material/gizmo.h

@@ -3,16 +3,11 @@
 
 #include <stdint.h>
 
-#if defined(__cplusplus)
+extern "C" {
-extern "C"
-{
-#endif
     extern const uint8_t GIZMO_PACKAGE[];
     extern int GIZMO_GIZMO_OFFSET;
     extern int GIZMO_GIZMO_SIZE;
-#if defined(__cplusplus)
 }
-#endif
 #define GIZMO_GIZMO_DATA (GIZMO_PACKAGE + GIZMO_GIZMO_OFFSET)
 
 #endif

thermion_dart/native/include/material/grid.S

@@ -0,0 +1,12 @@
+    .global GRID_GRID_OFFSET;
+    .global GRID_GRID_SIZE;
+
+    .global GRID_PACKAGE
+    .section .rodata
+GRID_PACKAGE:
+    .incbin "grid.bin"
+GRID_GRID_OFFSET:
+    .int 0
+GRID_GRID_SIZE:
+    .int 30210
+

thermion_dart/native/include/material/grid.apple.S

@@ -0,0 +1,12 @@
+    .global _GRID_GRID_OFFSET;
+    .global _GRID_GRID_SIZE;
+
+    .global _GRID_PACKAGE
+    .section __TEXT,__const
+_GRID_PACKAGE:
+    .incbin "grid.bin"
+_GRID_GRID_OFFSET:
+    .int 0
+_GRID_GRID_SIZE:
+    .int 30210
+

thermion_dart/native/include/material/grid.h

@@ -0,0 +1,13 @@
+#ifndef GRID_H_
+#define GRID_H_
+
+#include <stdint.h>
+
+extern "C" {
+    extern const uint8_t GRID_PACKAGE[];
+    extern int GRID_GRID_OFFSET;
+    extern int GRID_GRID_SIZE;
+}
+#define GRID_GRID_DATA (GRID_PACKAGE + GRID_GRID_OFFSET)
+
+#endif

thermion_dart/native/include/material/image.h

@@ -3,16 +3,11 @@
 
 #include <stdint.h>
 
-#if defined(__cplusplus)
+extern "C" {
-extern "C"
-{
-#endif
     extern const uint8_t IMAGE_PACKAGE[];
     extern int IMAGE_IMAGE_OFFSET;
     extern int IMAGE_IMAGE_SIZE;
-#if defined(__cplusplus)
 }
-#endif
 #define IMAGE_IMAGE_DATA (IMAGE_PACKAGE + IMAGE_IMAGE_OFFSET)
 
 #endif

thermion_dart/native/include/material/unlit.S

@@ -0,0 +1,12 @@
+    .global UNLIT_UNLIT_OFFSET;
+    .global UNLIT_UNLIT_SIZE;
+
+    .global UNLIT_PACKAGE
+    .section .rodata
+UNLIT_PACKAGE:
+    .incbin "unlit.bin"
+UNLIT_UNLIT_OFFSET:
+    .int 0
+UNLIT_UNLIT_SIZE:
+    .int 101394
+

thermion_dart/native/include/material/unlit.apple.S

@@ -0,0 +1,12 @@
+    .global _UNLIT_UNLIT_OFFSET;
+    .global _UNLIT_UNLIT_SIZE;
+
+    .global _UNLIT_PACKAGE
+    .section __TEXT,__const
+_UNLIT_PACKAGE:
+    .incbin "unlit.bin"
+_UNLIT_UNLIT_OFFSET:
+    .int 0
+_UNLIT_UNLIT_SIZE:
+    .int 101394
+

thermion_dart/native/include/material/unlit.h

@@ -0,0 +1,13 @@
+#ifndef UNLIT_H_
+#define UNLIT_H_
+
+#include <stdint.h>
+
+extern "C" {
+    extern const uint8_t UNLIT_PACKAGE[];
+    extern int UNLIT_UNLIT_OFFSET;
+    extern int UNLIT_UNLIT_SIZE;
+}
+#define UNLIT_UNLIT_DATA (UNLIT_PACKAGE + UNLIT_UNLIT_OFFSET)
+
+#endif

thermion_dart/native/src/CustomGeometry.cpp

@@ -0,0 +1,194 @@
+#include <vector> 
+#include "math.h"
+#include <filament/Engine.h>
+#include <filament/TransformManager.h>
+#include <filament/Texture.h>
+#include <filament/RenderableManager.h>
+#include <filament/Viewport.h>
+#include <filament/Frustum.h>
+#include <filament/geometry/SurfaceOrientation.h>
+
+#include "Log.hpp"
+#include "CustomGeometry.hpp"
+
+namespace thermion_filament {
+
+using namespace filament;
+
+CustomGeometry::CustomGeometry(
+    float* vertices, 
+    uint32_t numVertices, 
+    float* normals,
+    uint32_t numNormals,
+    float* uvs,
+    uint32_t numUvs,
+    uint16_t* indices, 
+    uint32_t numIndices, 
+    RenderableManager::PrimitiveType primitiveType, 
+    Engine* engine)
+    : numVertices(numVertices), numIndices(numIndices), _engine(engine) {
+    this->primitiveType = primitiveType;
+    this->vertices = new float[numVertices];
+    std::memcpy(this->vertices, vertices, numVertices * sizeof(float));
+
+    if(numNormals > 0) {
+        Log("numNormals %d", numNormals);
+        this->normals = new float[numNormals];
+        std::memcpy(this->normals, normals, numNormals * sizeof(float));
+    } else { 
+        Log("no normals");
+    }
+
+    if(numUvs > 0) {
+        Log("numUvs %d", numUvs);
+        this->uvs = new float[numUvs];
+        std::memcpy(this->uvs, uvs, numUvs * sizeof(float));
+    } else {
+        this->uvs = nullptr;
+    }
+
+    this->indices = new uint16_t[numIndices];
+    std::memcpy(this->indices, indices, numIndices * sizeof(uint16_t));  
+
+    computeBoundingBox();
+}
+
+IndexBuffer* CustomGeometry::indexBuffer() const { 
+    IndexBuffer::BufferDescriptor::Callback indexCallback = [](void *buf, size_t,
+                                                               void *data)
+    {
+    //   free((void *)buf);
+    };
+
+    auto indexBuffer = IndexBuffer::Builder()
+        .indexCount(numIndices)
+        .bufferType(IndexBuffer::IndexType::USHORT)
+        .build(*_engine);
+
+    indexBuffer->setBuffer(*_engine, IndexBuffer::BufferDescriptor(
+        this->indices, indexBuffer->getIndexCount() * sizeof(uint16_t), indexCallback));
+    return indexBuffer;
+}
+
+VertexBuffer* CustomGeometry::vertexBuffer() const { 
+    VertexBuffer::BufferDescriptor::Callback vertexCallback = [](void *buf, size_t,
+                                                                 void *data)
+    {
+    //   free((void *)buf);
+    };
+
+    std::vector<filament::math::ushort3> triangles;
+    for(int i=0; i < numIndices; i+=3) {
+        filament::math::ushort3 triangle;
+        triangle.x = this->indices[i];
+        triangle.y = this->indices[i+1];
+        triangle.z = this->indices[i+2];
+        triangles.push_back(triangle);
+    }
+    
+    // Create a SurfaceOrientation builder
+    geometry::SurfaceOrientation::Builder builder;
+    builder.vertexCount(numVertices)
+           .normals((filament::math::float3*)normals)
+           .positions((filament::math::float3*)this->vertices)
+           .triangleCount(triangles.size())
+           .triangles(triangles.data());
+        
+    // Build the SurfaceOrientation object
+    auto orientation = builder.build();
+
+    // Retrieve the quaternions
+    auto quats = new std::vector<filament::math::quatf>(numVertices);
+    orientation->getQuats(quats->data(), numVertices);
+
+    // Use provided UVs or create dummy UV data
+    std::vector<filament::math::float2>* uvData;
+    if (this->uvs != nullptr) {
+        uvData = new std::vector<filament::math::float2>((filament::math::float2*)this->uvs, (filament::math::float2*)(this->uvs + numVertices * 2));
+    } else {
+        uvData = new std::vector<filament::math::float2>(numVertices, filament::math::float2{0.0f, 0.0f});
+    }
+
+    // Create dummy vertex color data (white color for all vertices)
+    auto dummyColors = new std::vector<filament::math::float4>(numVertices, filament::math::float4{1.0f, 1.0f, 1.0f, 1.0f});
+
+    auto vertexBufferBuilder = VertexBuffer::Builder()
+        .vertexCount(numVertices)
+        .attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
+        .attribute(VertexAttribute::UV0, 1, VertexBuffer::AttributeType::FLOAT2)
+        .attribute(VertexAttribute::UV1, 2, VertexBuffer::AttributeType::FLOAT2)
+        .attribute(VertexAttribute::COLOR, 3, VertexBuffer::AttributeType::FLOAT4);
+   
+    if(this->normals) {
+        vertexBufferBuilder
+            .bufferCount(5)
+            .attribute(VertexAttribute::TANGENTS, 4, filament::VertexBuffer::AttributeType::FLOAT4);
+    } else {
+        vertexBufferBuilder = vertexBufferBuilder.bufferCount(4);
+    }
+    auto vertexBuffer = vertexBufferBuilder
+        .build(*_engine);
+
+    vertexBuffer->setBufferAt(*_engine, 0, VertexBuffer::BufferDescriptor(
+        this->vertices, vertexBuffer->getVertexCount() * sizeof(math::float3), vertexCallback));
+
+    // Set UV0 buffer
+    vertexBuffer->setBufferAt(*_engine, 1, VertexBuffer::BufferDescriptor(
+        uvData->data(), uvData->size() * sizeof(math::float2), 
+        [](void* buf, size_t, void* data) {
+            delete static_cast<std::vector<math::float2>*>(data);
+        }, uvData));
+
+    // Set UV1 buffer (reusing UV0 data)
+    vertexBuffer->setBufferAt(*_engine, 2, VertexBuffer::BufferDescriptor(
+        uvData->data(), uvData->size() * sizeof(math::float2), 
+        [](void* buf, size_t, void* data) {
+            // Do nothing here, as we're reusing the same data as UV0
+        }, nullptr));
+
+    // Set vertex color buffer
+    vertexBuffer->setBufferAt(*_engine, 3, VertexBuffer::BufferDescriptor(
+        dummyColors->data(), dummyColors->size() * sizeof(math::float4),
+        [](void* buf, size_t, void* data) {
+            delete static_cast<std::vector<math::float4>*>(data);
+        }, dummyColors));
+    
+    if(this->normals) {
+        vertexBuffer->setBufferAt(*_engine, 4, VertexBuffer::BufferDescriptor(
+            quats->data(), quats->size() * sizeof(math::quatf), [] (void *buf, size_t,
+                                                                    void *data)
+        {
+        delete (std::vector<math::quatf>*)data;
+        }, (void*)quats));
+    }
+    return vertexBuffer;
+}
+
+CustomGeometry::~CustomGeometry() {
+    delete[] vertices;
+    delete[] indices;
+    if (normals) delete[] normals;
+    if (uvs) delete[] uvs;
+}
+
+void CustomGeometry::computeBoundingBox() {
+    float minX = FLT_MAX, minY = FLT_MAX, minZ = FLT_MAX;
+    float maxX = -FLT_MAX, maxY = -FLT_MAX, maxZ = -FLT_MAX;
+
+    for (uint32_t i = 0; i < numVertices; i += 3) {
+        minX = std::min(vertices[i], minX);
+        minY = std::min(vertices[i + 1], minY);
+        minZ = std::min(vertices[i + 2], minZ);
+        maxX = std::max(vertices[i], maxX);
+        maxY = std::max(vertices[i + 1], maxY);
+        maxZ = std::max(vertices[i + 2], maxZ);
+    }
+
+    boundingBox = Box{{minX, minY, minZ}, {maxX, maxY, maxZ}};
+}
+
+Box CustomGeometry::getBoundingBox() const {
+    return boundingBox;
+}
+
+}

thermion_dart/native/src/Gizmo.cpp

@@ -0,0 +1,354 @@
+#include "Gizmo.hpp"
+
+#include <filament/Engine.h>
+#include <utils/Entity.h>
+#include <utils/EntityManager.h>
+#include <filament/RenderableManager.h>
+#include <filament/TransformManager.h>
+#include <gltfio/math.h>
+#include "SceneManager.hpp"
+#include "material/gizmo.h"
+#include "Log.hpp"
+
+namespace thermion_filament {
+
+using namespace filament::gltfio;
+
+Gizmo::Gizmo(Engine &engine, View* view, Scene* scene) : _engine(engine)
+{
+    
+    _scene = scene;
+    _view = view;
+    _camera = &(_view->getCamera());
+    
+    auto &entityManager = EntityManager::get();
+
+    auto &transformManager = engine.getTransformManager();
+
+    _material =
+        Material::Builder()
+            .package(GIZMO_GIZMO_DATA, GIZMO_GIZMO_SIZE)
+            .build(engine);
+
+    // First, create the black cube at the center
+    // The axes widgets will be parented to this entity 
+    _entities[3] = entityManager.create();
+
+    _materialInstances[3] = _material->createInstance();
+    _materialInstances[3]->setParameter("color", math::float4{0.0f, 0.0f, 0.0f, 1.0f}); // Black color
+
+    // Create center cube vertices
+    float centerCubeSize = 0.01f;
+    float *centerCubeVertices = new float[8 * 3]{
+        -centerCubeSize, -centerCubeSize, -centerCubeSize,
+        centerCubeSize, -centerCubeSize, -centerCubeSize,
+        centerCubeSize, centerCubeSize, -centerCubeSize,
+        -centerCubeSize, centerCubeSize, -centerCubeSize,
+        -centerCubeSize, -centerCubeSize, centerCubeSize,
+        centerCubeSize, -centerCubeSize, centerCubeSize,
+        centerCubeSize, centerCubeSize, centerCubeSize,
+        -centerCubeSize, centerCubeSize, centerCubeSize};
+
+    // Create center cube indices
+    uint16_t *centerCubeIndices = new uint16_t[36]{
+        0, 1, 2, 2, 3, 0,
+        1, 5, 6, 6, 2, 1,
+        5, 4, 7, 7, 6, 5,
+        4, 0, 3, 3, 7, 4,
+        3, 2, 6, 6, 7, 3,
+        4, 5, 1, 1, 0, 4};
+
+    auto centerCubeVb = VertexBuffer::Builder()
+                            .vertexCount(8)
+                            .bufferCount(1)
+                            .attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
+                            .build(engine);
+
+    centerCubeVb->setBufferAt(engine, 0, VertexBuffer::BufferDescriptor(centerCubeVertices, 8 * sizeof(filament::math::float3), [](void *buffer, size_t size, void *)
+                                                                        { delete[] static_cast<float *>(buffer); }));
+
+    auto centerCubeIb = IndexBuffer::Builder().indexCount(36).bufferType(IndexBuffer::IndexType::USHORT).build(engine);
+    centerCubeIb->setBuffer(engine, IndexBuffer::BufferDescriptor(
+                                        centerCubeIndices, 36 * sizeof(uint16_t),
+                                        [](void *buffer, size_t size, void *)
+                                        { delete[] static_cast<uint16_t *>(buffer); }));
+
+    RenderableManager::Builder(1)
+        .boundingBox({{-centerCubeSize, -centerCubeSize, -centerCubeSize}, 
+                      {centerCubeSize, centerCubeSize, centerCubeSize}})
+        .material(0, _materialInstances[3])
+        .layerMask(0xFF, 1u << SceneManager::LAYERS::OVERLAY)
+        .priority(7)
+        .geometry(0, RenderableManager::PrimitiveType::TRIANGLES, centerCubeVb, centerCubeIb, 0, 36)
+        .culling(false)
+        .build(engine, _entities[3]);
+
+    auto cubeTransformInstance = transformManager.getInstance(_entities[3]);
+    math::mat4f cubeTransform;
+    transformManager.setTransform(cubeTransformInstance, cubeTransform);
+
+    // Line and arrow vertices
+    float lineLength = 0.6f;
+    float lineWidth = 0.004f;
+    float arrowLength = 0.06f;
+    float arrowWidth = 0.02f;
+    float *vertices = new float[13 * 3]{
+        // Line vertices (8 vertices)
+        -lineWidth, -lineWidth, 0.0f,
+        lineWidth, -lineWidth, 0.0f,
+        lineWidth, lineWidth, 0.0f,
+        -lineWidth, lineWidth, 0.0f,
+        -lineWidth, -lineWidth, lineLength,
+        lineWidth, -lineWidth, lineLength,
+        lineWidth, lineWidth, lineLength,
+        -lineWidth, lineWidth, lineLength,
+        // Arrow vertices (5 vertices)
+        0.0f, 0.0f, lineLength + arrowLength, // Tip of the arrow
+        -arrowWidth, -arrowWidth, lineLength, // Base of the arrow
+        arrowWidth, -arrowWidth, lineLength,
+        arrowWidth, arrowWidth, lineLength,
+        -arrowWidth, arrowWidth, lineLength};
+
+    // Line and arrow indices
+    uint16_t *indices = new uint16_t[54]{
+        // Line indices (24 indices)
+        0, 1, 5, 5, 4, 0,
+        1, 2, 6, 6, 5, 1,
+        2, 3, 7, 7, 6, 2,
+        3, 0, 4, 4, 7, 3,
+        // Arrow indices (30 indices)
+        8, 9, 10,            // Front face
+        8, 10, 11,           // Right face
+        8, 11, 12,           // Back face
+        8, 12, 9,            // Left face
+        9, 12, 11, 11, 10, 9 // Base of the arrow
+    };
+
+    auto vb = VertexBuffer::Builder()
+                  .vertexCount(13)
+                  .bufferCount(1)
+                  .attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
+                  .build(engine);
+
+    vb->setBufferAt(engine, 0, VertexBuffer::BufferDescriptor(vertices, 13 * sizeof(filament::math::float3), [](void *buffer, size_t size, void *)
+                                                              { delete[] static_cast<float *>(buffer); }));
+
+    auto ib = IndexBuffer::Builder().indexCount(54).bufferType(IndexBuffer::IndexType::USHORT).build(engine);
+    ib->setBuffer(engine, IndexBuffer::BufferDescriptor(
+                              indices, 54 * sizeof(uint16_t),
+                              [](void *buffer, size_t size, void *)
+                              { delete[] static_cast<uint16_t *>(buffer); }));
+
+    // Create the three axes
+    for (int i = 0; i < 3; i++)
+    {
+        _entities[i] = entityManager.create();
+        _materialInstances[i] = _material->createInstance();
+
+        auto baseColor = inactiveColors[i];
+
+        math::mat4f transform;
+
+        switch (i)
+        {
+        case Axis::X: 
+            // _materialInstances[i]->setParameter("axisDirection", math::float3 { 1.0f, 0.0f, 0.0f});
+            transform = math::mat4f::rotation(math::F_PI_2, math::float3{0, 1, 0});
+            break;
+        case 1: 
+            // _materialInstances[i]->setParameter("axisDirection", math::float3 { 0.0f, 1.0f, 0.0f});
+            transform = math::mat4f::rotation(-math::F_PI_2, math::float3{1, 0, 0});
+            break;
+        case 2: 
+            // _materialInstances[i]->setParameter("axisDirection", math::float3 { 0.0f, 0.0f, 1.0f});
+            break;
+        }
+
+        _materialInstances[i]->setParameter("color", baseColor);
+
+        RenderableManager::Builder(1)
+             .boundingBox({{-arrowWidth, -arrowWidth, 0}, 
+                          {arrowWidth, arrowWidth, lineLength + arrowLength}})
+            .material(0, _materialInstances[i])
+            .geometry(0, RenderableManager::PrimitiveType::TRIANGLES, vb, ib, 0, 54)
+            .priority(6)
+            .layerMask(0xFF, 1u << SceneManager::LAYERS::OVERLAY)
+            .culling(false)
+            .receiveShadows(false)
+            .castShadows(false)
+            .build(engine, _entities[i]);
+
+
+        auto instance = transformManager.getInstance(_entities[i]);
+        transformManager.setTransform(instance, transform);
+
+        // parent the axis to the center cube
+        transformManager.setParent(instance, cubeTransformInstance);
+
+    }
+
+    createTransparentRectangles();
+}
+
+Gizmo::~Gizmo() {
+    _scene->removeEntities(_entities, 7);
+    
+    for(int i = 0; i < 7; i++) {
+        _engine.destroy(_entities[i]);    
+    }
+    
+    for(int i = 0; i < 7; i++) {
+        _engine.destroy(_materialInstances[i]);    
+    }
+    
+    _engine.destroy(_material);
+    
+}
+
+void Gizmo::createTransparentRectangles()
+{
+    auto &entityManager = EntityManager::get();
+    auto &transformManager = _engine.getTransformManager();
+
+    float volumeWidth = 0.2f;
+    float volumeLength = 1.2f;
+    float volumeDepth = 0.2f;
+
+    float *volumeVertices = new float[8 * 3]{
+        -volumeWidth / 2, -volumeDepth / 2, 0,
+        volumeWidth / 2, -volumeDepth / 2, 0,
+        volumeWidth / 2, -volumeDepth / 2, volumeLength,
+        -volumeWidth / 2, -volumeDepth / 2, volumeLength,
+        -volumeWidth / 2, volumeDepth / 2, 0,
+        volumeWidth / 2, volumeDepth / 2, 0,
+        volumeWidth / 2, volumeDepth / 2, volumeLength,
+        -volumeWidth / 2, volumeDepth / 2, volumeLength
+    };
+
+    uint16_t *volumeIndices = new uint16_t[36]{
+        0, 1, 2, 2, 3, 0,  // Bottom face
+        4, 5, 6, 6, 7, 4,  // Top face
+        0, 4, 7, 7, 3, 0,  // Left face
+        1, 5, 6, 6, 2, 1,  // Right face
+        0, 1, 5, 5, 4, 0,  // Front face
+        3, 2, 6, 6, 7, 3   // Back face
+    };
+
+    auto volumeVb = VertexBuffer::Builder()
+        .vertexCount(8)
+        .bufferCount(1)
+        .attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
+        .build(_engine);
+
+    volumeVb->setBufferAt(_engine, 0, VertexBuffer::BufferDescriptor(
+        volumeVertices, 8 * sizeof(filament::math::float3),
+        [](void *buffer, size_t size, void *) { delete[] static_cast<float *>(buffer); }
+    ));
+
+    auto volumeIb = IndexBuffer::Builder()
+        .indexCount(36)
+        .bufferType(IndexBuffer::IndexType::USHORT)
+        .build(_engine);
+
+    volumeIb->setBuffer(_engine, IndexBuffer::BufferDescriptor(
+        volumeIndices, 36 * sizeof(uint16_t),
+        [](void *buffer, size_t size, void *) { delete[] static_cast<uint16_t *>(buffer); }
+    ));
+
+    for (int i = 4; i < 7; i++)
+    {
+        _entities[i] = entityManager.create();
+        _materialInstances[i] = _material->createInstance();
+
+        _materialInstances[i]->setParameter("color", math::float4{0.0f, 0.0f, 0.0f, 0.0f});  
+
+        math::mat4f transform;
+        switch (i-4)
+        {
+        case Axis::X:
+            transform = math::mat4f::rotation(math::F_PI_2, math::float3{0, 1, 0});
+            break;
+        case Axis::Y:
+            transform = math::mat4f::rotation(-math::F_PI_2, math::float3{1, 0, 0});
+            break;
+        case Axis::Z:
+            break;
+        }
+
+        RenderableManager::Builder(1)
+            .boundingBox({{-volumeWidth / 2, -volumeDepth / 2, 0}, {volumeWidth / 2, volumeDepth / 2, volumeLength}})
+            .material(0, _materialInstances[i])
+            .geometry(0, RenderableManager::PrimitiveType::TRIANGLES, volumeVb, volumeIb, 0, 36)
+            .priority(7)
+            .layerMask(0xFF, 1u << SceneManager::LAYERS::OVERLAY)
+            .culling(false)
+            .receiveShadows(false)
+            .castShadows(false)
+            .build(_engine, _entities[i]);
+
+        auto instance = transformManager.getInstance(_entities[i]);
+        transformManager.setTransform(instance, transform);
+
+        // Parent the picking volume to the center cube
+        transformManager.setParent(instance, transformManager.getInstance(_entities[3]));
+    }
+}
+
+void Gizmo::highlight(Entity entity) {
+    auto &rm = _engine.getRenderableManager();
+    auto renderableInstance = rm.getInstance(entity);
+    auto materialInstance = rm.getMaterialInstanceAt(renderableInstance, 0);
+
+    math::float4 baseColor;
+    if(entity == x()) {
+        baseColor = activeColors[Axis::X];
+    } else if(entity == y()) {
+        baseColor = activeColors[Axis::Y];
+    } else if(entity == z()) {
+        baseColor = activeColors[Axis::Z];
+    } else {
+        baseColor = math::float4 { 1.0f, 1.0f, 1.0f, 1.0f };
+    }
+
+    materialInstance->setParameter("color", baseColor);
+    
+}
+
+void Gizmo::unhighlight() {
+    auto &rm = _engine.getRenderableManager();
+    
+    for(int i = 0; i < 3; i++) { 
+        auto renderableInstance = rm.getInstance(_entities[i]);
+        auto materialInstance = rm.getMaterialInstanceAt(renderableInstance, 0);
+
+        math::float4 baseColor = inactiveColors[i];
+        materialInstance->setParameter("color", baseColor);
+    }
+}
+
+void Gizmo::pick(uint32_t x, uint32_t y, void (*callback)(EntityId entityId, int x, int y))
+  {
+    auto handler = new Gizmo::PickCallbackHandler(this, callback);
+    _view->pick(x, y,  [=](filament::View::PickingQueryResult const &result) { 
+        handler->handle(result);
+    });
+  }
+
+bool Gizmo::isGizmoEntity(Entity e) {
+    for(int i = 0; i < 7; i++) {
+        if(e == _entities[i]) {
+            return true;
+        }
+    }
+    return false;
+}
+
+void Gizmo::setVisibility(bool visible) {
+    if(visible) {
+        _scene->addEntities(_entities, 7);
+    } else { 
+        _scene->removeEntities(_entities, 7);
+    }
+}
+}
+

thermion_dart/native/src/GridOverlay.cpp

@@ -0,0 +1,197 @@
+#include "GridOverlay.hpp"
+
+#include <filament/Engine.h>
+#include <utils/Entity.h>
+#include <utils/EntityManager.h>
+#include <filament/RenderableManager.h>
+#include <filament/TransformManager.h>
+#include <gltfio/math.h>
+
+#include "material/grid.h"
+#include "SceneManager.hpp"
+#include "Log.hpp"
+
+namespace thermion_filament {
+
+using namespace filament::gltfio;
+
+GridOverlay::GridOverlay(Engine &engine) : _engine(engine)
+{
+    auto &entityManager = EntityManager::get();
+    auto &transformManager = engine.getTransformManager();
+
+    const int gridSize = 100;
+    const float gridSpacing = 1.0f;
+    int vertexCount = (gridSize + 1) * 4; // 2 axes, 2 vertices per line
+
+    float* gridVertices = new float[vertexCount * 3];
+    int index = 0;
+
+    // Create grid lines
+    for (int i = 0; i <= gridSize; ++i) {
+        float pos = i * gridSpacing - (gridSize * gridSpacing / 2);
+
+        // X-axis lines
+        gridVertices[index++] = pos;
+        gridVertices[index++] = 0;
+        gridVertices[index++] = -(gridSize * gridSpacing / 2);
+
+        gridVertices[index++] = pos;
+        gridVertices[index++] = 0;
+        gridVertices[index++] = (gridSize * gridSpacing / 2);
+
+        // Z-axis lines
+        gridVertices[index++] = -(gridSize * gridSpacing / 2);
+        gridVertices[index++] = 0;
+        gridVertices[index++] = pos;
+
+        gridVertices[index++] = (gridSize * gridSpacing / 2);
+        gridVertices[index++] = 0;
+        gridVertices[index++] = pos;
+    }
+
+    auto vb = VertexBuffer::Builder()
+        .vertexCount(vertexCount)
+        .bufferCount(1)
+        .attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
+        .build(engine);
+
+    vb->setBufferAt(engine, 0, VertexBuffer::BufferDescriptor(
+        gridVertices, vertexCount * sizeof(filament::math::float3),
+        [](void* buffer, size_t size, void*) { delete[] static_cast<float*>(buffer); }
+    ));
+
+    uint32_t* gridIndices = new uint32_t[vertexCount];
+    for (uint32_t i = 0; i < vertexCount; ++i) {
+        gridIndices[i] = i;
+    }
+
+    auto ib = IndexBuffer::Builder()
+        .indexCount(vertexCount)
+        .bufferType(IndexBuffer::IndexType::UINT)
+        .build(engine);
+
+    ib->setBuffer(engine, IndexBuffer::BufferDescriptor(
+        gridIndices, vertexCount * sizeof(uint32_t),
+        [](void* buffer, size_t size, void*) { delete[] static_cast<uint32_t*>(buffer); }
+    ));
+
+    _gridEntity = entityManager.create();
+    _material = Material::Builder()
+        .package(GRID_PACKAGE, GRID_GRID_SIZE)
+        .build(engine);
+
+    _materialInstance = _material->createInstance();
+
+    _materialInstance->setParameter("maxDistance", 50.0f); // Adjust as needed
+    _materialInstance->setParameter("color", math::float3{0.5f, 0.5f, 0.5f}); // Gray color for the grid
+
+
+    RenderableManager::Builder(1)
+        .boundingBox({{-gridSize * gridSpacing / 2, 0, -gridSize * gridSpacing / 2},
+                      {gridSize * gridSpacing / 2, 0, gridSize * gridSpacing / 2}})
+        .material(0, _materialInstance)
+        .geometry(0, RenderableManager::PrimitiveType::LINES, vb, ib, 0, vertexCount)
+        .priority(6)
+        .layerMask(0xFF, 1u << SceneManager::LAYERS::OVERLAY)
+        .culling(false)
+        .receiveShadows(false)
+        .castShadows(false)
+        .build(engine, _gridEntity);
+const float sphereRadius = 0.05f;
+const int sphereSegments = 16;
+const int sphereRings = 16;
+
+vertexCount = (sphereRings + 1) * (sphereSegments + 1);
+int indexCount = sphereRings * sphereSegments * 6;
+
+math::float3* vertices = new math::float3[vertexCount];
+uint32_t* indices = new uint32_t[indexCount];
+
+int vertexIndex = 0;
+// Generate sphere vertices
+for (int ring = 0; ring <= sphereRings; ++ring) {
+    float theta = ring * M_PI / sphereRings;
+    float sinTheta = std::sin(theta);
+    float cosTheta = std::cos(theta);
+
+    for (int segment = 0; segment <= sphereSegments; ++segment) {
+        float phi = segment * 2 * M_PI / sphereSegments;
+        float sinPhi = std::sin(phi);
+        float cosPhi = std::cos(phi);
+
+        float x = cosPhi * sinTheta;
+        float y = cosTheta;
+        float z = sinPhi * sinTheta;
+
+        vertices[vertexIndex++] = {x * sphereRadius, y * sphereRadius, z * sphereRadius};
+    }
+}
+
+int indexIndex = 0;
+// Generate sphere indices
+for (int ring = 0; ring < sphereRings; ++ring) {
+    for (int segment = 0; segment < sphereSegments; ++segment) {
+        uint32_t current = ring * (sphereSegments + 1) + segment;
+        uint32_t next = current + sphereSegments + 1;
+
+        indices[indexIndex++] = current;
+        indices[indexIndex++] = next;
+        indices[indexIndex++] = current + 1;
+
+        indices[indexIndex++] = current + 1;
+        indices[indexIndex++] = next;
+        indices[indexIndex++] = next + 1;
+    }
+}
+
+auto sphereVb = VertexBuffer::Builder()
+    .vertexCount(vertexCount)
+    .bufferCount(1)
+    .attribute(VertexAttribute::POSITION, 0, VertexBuffer::AttributeType::FLOAT3)
+    .build(engine);
+
+sphereVb->setBufferAt(engine, 0, VertexBuffer::BufferDescriptor(
+    vertices, vertexCount * sizeof(math::float3),
+    [](void* buffer, size_t size, void*) { delete[] static_cast<math::float3*>(buffer); }
+));
+
+auto sphereIb = IndexBuffer::Builder()
+    .indexCount(indexCount)
+    .bufferType(IndexBuffer::IndexType::UINT)
+    .build(engine);
+
+sphereIb->setBuffer(engine, IndexBuffer::BufferDescriptor(
+    indices, indexCount * sizeof(uint32_t),
+    [](void* buffer, size_t size, void*) { delete[] static_cast<uint32_t*>(buffer); }
+));
+
+_sphereEntity = entityManager.create();
+
+RenderableManager::Builder(1)
+    .boundingBox({{-sphereRadius, -sphereRadius, -sphereRadius},
+                  {sphereRadius, sphereRadius, sphereRadius}})
+    .geometry(0, RenderableManager::PrimitiveType::TRIANGLES, sphereVb, sphereIb, 0, indexCount)
+    .priority(6)
+    .layerMask(0xFF, 1u << SceneManager::LAYERS::OVERLAY)
+    .culling(false)
+    .receiveShadows(false)
+    .castShadows(false)
+    .build(engine, _sphereEntity);
+
+}
+  
+
+void GridOverlay::destroy()
+{
+    auto &rm = _engine.getRenderableManager();
+    auto &tm = _engine.getTransformManager();
+    rm.destroy(_sphereEntity);
+    rm.destroy(_gridEntity);
+    tm.destroy(_sphereEntity);
+    tm.destroy(_gridEntity);
+    _engine.destroy(_sphereEntity);
+    _engine.destroy(_gridEntity);
+}
+
+} // namespace thermion_filament

thermion_dart/native/src/HighlightOverlay.cpp

@@ -0,0 +1,184 @@
+#include <filament/Material.h>
+#include <filament/MaterialInstance.h>
+#include <utils/EntityManager.h>
+
+#include "SceneManager.hpp"
+
+namespace thermion_filament
+{
+
+    SceneManager::HighlightOverlay::HighlightOverlay(
+        EntityId entityId,
+        SceneManager *const sceneManager,
+        Engine *engine,
+        float r,
+        float g,
+        float b) : _sceneManager(sceneManager), _engine(engine)
+    {
+
+        auto &rm = engine->getRenderableManager();
+
+        auto &tm = engine->getTransformManager();
+
+        // Create the outline/highlight material instance
+        filament::gltfio::MaterialKey dummyKey; // We're not using the key for this simple material
+        filament::gltfio::UvMap dummyUvMap;     // We're not using UV mapping for this simple material
+
+        auto materialProvider = sceneManager->unlitMaterialProvider();
+
+        _highlightMaterialInstance = materialProvider->createMaterialInstance(&dummyKey, &dummyUvMap);
+        _highlightMaterialInstance->setStencilOpStencilFail(filament::backend::StencilOperation::KEEP);
+        _highlightMaterialInstance->setStencilOpDepthFail(filament::backend::StencilOperation::KEEP);
+        _highlightMaterialInstance->setStencilOpDepthStencilPass(filament::backend::StencilOperation::REPLACE);
+        _highlightMaterialInstance->setStencilCompareFunction(filament::backend::SamplerCompareFunc::NE);
+        _highlightMaterialInstance->setStencilReferenceValue(1);
+
+        _highlightMaterialInstance->setParameter("color", filament::math::float3{r, g, b});
+        _highlightMaterialInstance->setParameter("scale", 1.04f);
+        _highlightMaterialInstance->setCullingMode(filament::backend::CullingMode::FRONT);
+
+
+        auto scene = sceneManager->getScene();
+
+        _isGeometryEntity = sceneManager->isGeometryEntity(entityId);
+        _isGltfAsset = sceneManager->isGltfAsset(entityId);
+
+        if (!(_isGeometryEntity || _isGltfAsset))
+        {
+            Log("Failed to set stencil outline for entity %d: the entity is a child of another entity. "
+                "Currently, we only support outlining top-level entities."
+                "Call getAncestor() to get the ancestor of this entity, then set on that",
+                entityId);
+            return;
+        }
+
+        if (_isGeometryEntity)
+        {
+
+            Log("Entity %d is geometry", entityId);
+
+            auto geometryEntity = Entity::import(entityId);
+            auto renderable = rm.getInstance(geometryEntity);
+
+            auto materialInstance = rm.getMaterialInstanceAt(renderable, 0);
+
+            // set stencil write on the existing material
+            materialInstance->setStencilWrite(true);
+            materialInstance->setDepthWrite(true);
+            materialInstance->setStencilReferenceValue(1);
+            materialInstance->setStencilOpStencilFail(filament::backend::StencilOperation::KEEP);
+            materialInstance->setStencilOpDepthFail(filament::backend::StencilOperation::KEEP);
+            materialInstance->setStencilOpDepthStencilPass(filament::backend::StencilOperation::KEEP);
+            materialInstance->setStencilCompareFunction(filament::backend::SamplerCompareFunc::A);
+            // materialInstance->setCullingMode(filament::MaterialInstance::CullingMode::BACK);
+
+            auto geometry = sceneManager->getGeometry(entityId);
+
+            _entity = utils::EntityManager::get().create();
+            RenderableManager::Builder builder(1);
+            builder.boundingBox(geometry->getBoundingBox())
+                .geometry(0, geometry->primitiveType, geometry->vertexBuffer(), geometry->indexBuffer(), 0, geometry->numIndices)
+                .culling(true)
+                .material(0, _highlightMaterialInstance)
+                .priority(0)
+                .receiveShadows(false)
+                .castShadows(false);
+
+            builder.build(*engine, _entity);
+
+            scene->addEntity(_entity);
+            auto outlineTransformInstance = tm.getInstance(_entity);
+            auto entityTransformInstance = tm.getInstance(geometryEntity);
+            tm.setParent(outlineTransformInstance, entityTransformInstance);
+        }
+        else if (_isGltfAsset)
+        {
+            Log("Entity %d is gltf", entityId);
+            auto *asset = sceneManager->getAssetByEntityId(entityId);
+
+            if (asset)
+            {
+
+                Log("Found glTF FilamentAsset with %d material instances", asset->getInstance()->getMaterialInstanceCount());
+
+                auto materialInstance = asset->getInstance()->getMaterialInstances()[0];
+
+                // set stencil write on the existing material
+                materialInstance->setStencilWrite(true);
+                materialInstance->setDepthWrite(true);
+                materialInstance->setStencilReferenceValue(1);
+                materialInstance->setStencilOpStencilFail(filament::backend::StencilOperation::KEEP);
+                materialInstance->setStencilOpDepthFail(filament::backend::StencilOperation::REPLACE);
+                materialInstance->setStencilOpDepthStencilPass(filament::backend::StencilOperation::REPLACE);
+                materialInstance->setStencilCompareFunction(filament::backend::SamplerCompareFunc::A);
+
+                _newInstance = sceneManager->createGltfAssetInstance(asset);
+
+                _entity = _newInstance->getRoot();
+
+                auto newTransformInstance = tm.getInstance(_entity);
+
+                auto entityTransformInstance = tm.getInstance(asset->getRoot());
+                tm.setParent(newTransformInstance, entityTransformInstance);
+                if (!_newInstance)
+                {
+                    Log("Couldn't create new instance");
+                }
+                else
+                {
+                    for (int i = 0; i < _newInstance->getEntityCount(); i++)
+                    {
+                        auto entity = _newInstance->getEntities()[i];
+                        auto renderableInstance = rm.getInstance(entity);
+                        rm.setPriority(renderableInstance, 7);
+                        if (renderableInstance.isValid())
+                        {
+                            for (int primitiveIndex = 0; primitiveIndex < rm.getPrimitiveCount(renderableInstance); primitiveIndex++)
+                            {
+                                rm.setMaterialInstanceAt(renderableInstance, primitiveIndex, _highlightMaterialInstance);
+                            }
+                        }
+                        else
+                        {
+                            Log("Not renderable, ignoring");
+                        }
+                    }
+                    scene->addEntities(_newInstance->getEntities(), _newInstance->getEntityCount());
+                }
+            }
+            else
+            {
+                Log("Not FilamentAsset");
+            }
+        }
+    }
+
+    SceneManager::HighlightOverlay::~HighlightOverlay()
+    {
+        if (_entity.isNull())
+        {
+            Log("Null entity");
+            return;
+        }
+
+        if (_isGltfAsset)
+        {
+            _sceneManager->getScene()->removeEntities(_newInstance->getEntities(), _newInstance->getEntityCount());
+            _newInstance->detachMaterialInstances();
+            _engine->destroy(_highlightMaterialInstance);
+        }
+        else if (_isGeometryEntity)
+        {
+            auto &tm = _engine->getTransformManager();
+            auto transformInstance = tm.getInstance(_entity);
+            _sceneManager->getScene()->remove(_entity);
+            utils::EntityManager::get().destroy(_entity);
+            _engine->destroy(_entity);
+            _engine->destroy(_highlightMaterialInstance);
+        }
+        else
+        {
+            Log("FATAL: Unknown highlight overlay entity type");
+        }
+    }
+}

thermion_dart/native/src/ThermionDartApi.cpp

@@ -4,7 +4,6 @@
 #endif
 
 #include "ResourceBuffer.hpp"
-
 #include "FilamentViewer.hpp"
 #include "filament/LightManager.h"
 #include "Log.hpp"
@@ -13,77 +12,106 @@
 #include <thread>
 #include <functional>
 
-using namespace thermion_filament;
-
 #ifdef __EMSCRIPTEN__
 #include <emscripten/emscripten.h>
 #endif
 
+using namespace thermion_filament;
+
 extern "C"
 {
 
 #include "ThermionDartApi.h"
 
-
+    // Helper function to convert filament::math::mat4 to double4x4
-    EMSCRIPTEN_KEEPALIVE const void *create_filament_viewer(const void *context, const void *const loader, void *const platform, const char *uberArchivePath)
+    static double4x4 convert_mat4_to_double4x4(const filament::math::mat4 &mat)
     {
-        const auto * loaderImpl = new ResourceLoaderWrapperImpl((ResourceLoaderWrapper*)loader);
+        return double4x4{
-        auto viewer = (const void *)new FilamentViewer(context, loaderImpl, platform, uberArchivePath);
+            {mat[0][0], mat[0][1], mat[0][2], mat[0][3]},
-        return viewer;
+            {mat[1][0], mat[1][1], mat[1][2], mat[1][3]},
+            {mat[2][0], mat[2][1], mat[2][2], mat[2][3]},
+            {mat[3][0], mat[3][1], mat[3][2], mat[3][3]},
+        };
     }
 
-    EMSCRIPTEN_KEEPALIVE void create_render_target(const void *const viewer, intptr_t texture, uint32_t width, uint32_t height)
+    // Helper function to convert double4x4 to filament::math::mat4
+    static filament::math::mat4 convert_double4x4_to_mat4(const double4x4 &d_mat)
+    {
+        return filament::math::mat4{
+            filament::math::float4{float(d_mat.col1[0]), float(d_mat.col1[1]), float(d_mat.col1[2]), float(d_mat.col1[3])},
+            filament::math::float4{float(d_mat.col2[0]), float(d_mat.col2[1]), float(d_mat.col2[2]), float(d_mat.col2[3])},
+            filament::math::float4{float(d_mat.col3[0]), float(d_mat.col3[1]), float(d_mat.col3[2]), float(d_mat.col3[3])},
+            filament::math::float4{float(d_mat.col4[0]), float(d_mat.col4[1]), float(d_mat.col4[2]), float(d_mat.col4[3])}};
+    }
+
+    EMSCRIPTEN_KEEPALIVE TViewer *create_filament_viewer(const void *context, const void *const loader, void *const platform, const char *uberArchivePath)
+    {
+        const auto *loaderImpl = new ResourceLoaderWrapperImpl((ResourceLoaderWrapper *)loader);
+        auto viewer = new FilamentViewer(context, loaderImpl, platform, uberArchivePath);
+        return reinterpret_cast<TViewer*>(viewer);
+    }
+
+    EMSCRIPTEN_KEEPALIVE TEngine *Viewer_getEngine(TViewer* viewer) { 
+        auto* engine = reinterpret_cast<FilamentViewer*>(viewer)->getEngine();
+        return reinterpret_cast<TEngine*>(engine);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void create_render_target(TViewer *viewer, intptr_t texture, uint32_t width, uint32_t height)
     {
         ((FilamentViewer *)viewer)->createRenderTarget(texture, width, height);
     }
 
-    EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer(TViewer *viewer)
     {
         delete ((FilamentViewer *)viewer);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_background_color(const void *const viewer, const float r, const float g, const float b, const float a)
+    EMSCRIPTEN_KEEPALIVE void set_background_color(TViewer *viewer, const float r, const float g, const float b, const float a)
     {
         ((FilamentViewer *)viewer)->setBackgroundColor(r, g, b, a);
     }
 
-    EMSCRIPTEN_KEEPALIVE void clear_background_image(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void clear_background_image(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->clearBackgroundImage();
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_background_image(const void *const viewer, const char *path, bool fillHeight)
+    EMSCRIPTEN_KEEPALIVE void set_background_image(TViewer *viewer, const char *path, bool fillHeight)
     {
         ((FilamentViewer *)viewer)->setBackgroundImage(path, fillHeight);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_background_image_position(const void *const viewer, float x, float y, bool clamp)
+    EMSCRIPTEN_KEEPALIVE void set_background_image_position(TViewer *viewer, float x, float y, bool clamp)
     {
         ((FilamentViewer *)viewer)->setBackgroundImagePosition(x, y, clamp);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_tone_mapping(const void *const viewer, int toneMapping)
+    EMSCRIPTEN_KEEPALIVE void set_tone_mapping(TViewer *viewer, int toneMapping)
     {
         ((FilamentViewer *)viewer)->setToneMapping((ToneMapping)toneMapping);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_bloom(const void *const viewer, float strength)
+    EMSCRIPTEN_KEEPALIVE void set_bloom(TViewer *viewer, float strength)
     {
-        Log("Setting bloom to %f", strength);
         ((FilamentViewer *)viewer)->setBloom(strength);
     }
 
-    EMSCRIPTEN_KEEPALIVE void load_skybox(const void *const viewer, const char *skyboxPath)
+    EMSCRIPTEN_KEEPALIVE void load_skybox(TViewer *viewer, const char *skyboxPath)
     {
         ((FilamentViewer *)viewer)->loadSkybox(skyboxPath);
     }
 
-    EMSCRIPTEN_KEEPALIVE void load_ibl(const void *const viewer, const char *iblPath, float intensity)
+    EMSCRIPTEN_KEEPALIVE void create_ibl(TViewer *viewer, float r, float g, float b, float intensity)
+    {
+        ((FilamentViewer *)viewer)->createIbl(r, g, b, intensity);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void load_ibl(TViewer *viewer, const char *iblPath, float intensity)
     {
         ((FilamentViewer *)viewer)->loadIbl(iblPath, intensity);
     }
 
-    EMSCRIPTEN_KEEPALIVE void rotate_ibl(const void *const viewer, float *rotationMatrix)
+    EMSCRIPTEN_KEEPALIVE void rotate_ibl(TViewer *viewer, float *rotationMatrix)
     {
         math::mat3f matrix(rotationMatrix[0], rotationMatrix[1],
                            rotationMatrix[2],
@@ -97,27 +125,27 @@ extern "C"
         ((FilamentViewer *)viewer)->rotateIbl(matrix);
     }
 
-    EMSCRIPTEN_KEEPALIVE void remove_skybox(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void remove_skybox(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->removeSkybox();
     }
 
-    EMSCRIPTEN_KEEPALIVE void remove_ibl(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void remove_ibl(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->removeIbl();
     }
 
-    EntityId add_light(
+    EMSCRIPTEN_KEEPALIVE EntityId add_light(
-        const void *const viewer, 
+        TViewer *viewer,
-        uint8_t type, 
+        uint8_t type,
-        float colour, 
+        float colour,
-        float intensity, 
+        float intensity,
-        float posX, 
+        float posX,
-        float posY, 
+        float posY,
-        float posZ, 
+        float posZ,
-        float dirX, 
+        float dirX,
-        float dirY, 
+        float dirY,
-        float dirZ, 
+        float dirZ,
         float falloffRadius,
         float spotLightConeInner,
         float spotLightConeOuter,
@@ -126,43 +154,37 @@ extern "C"
         float sunHaloFallof,
         bool shadows)
     {
-        return ((FilamentViewer *)viewer)->addLight(
+        return ((FilamentViewer *)viewer)->addLight((LightManager::Type)type, colour, intensity, posX, posY, posZ, dirX, dirY, dirZ, falloffRadius, spotLightConeInner, spotLightConeOuter, sunAngularRadius, sunHaloSize, sunHaloFallof, shadows);
-            (LightManager::Type)type, 
-            colour, 
-            intensity, 
-            posX, 
-            posY, 
-            posZ,
-            dirX,
-            dirY,
-            dirZ,
-            falloffRadius,
-            spotLightConeInner,
-            spotLightConeOuter,
-            sunAngularRadius,
-            sunHaloSize,
-            sunHaloFallof,
-            shadows);
     }
 
-    EMSCRIPTEN_KEEPALIVE void remove_light(const void *const viewer, int32_t entityId)
+    EMSCRIPTEN_KEEPALIVE void set_light_position(TViewer *viewer, int32_t entityId, float x, float y, float z)
+    {
+        ((FilamentViewer *)viewer)->setLightPosition(entityId, x, y, z);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_light_direction(TViewer *viewer, int32_t entityId, float x, float y, float z)
+    {
+        ((FilamentViewer *)viewer)->setLightDirection(entityId, x, y, z);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void remove_light(TViewer *viewer, int32_t entityId)
     {
         ((FilamentViewer *)viewer)->removeLight(entityId);
     }
 
-    EMSCRIPTEN_KEEPALIVE void clear_lights(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void clear_lights(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->clearLights();
     }
 
-    EMSCRIPTEN_KEEPALIVE EntityId load_glb(void *sceneManager, const char *assetPath, int numInstances)
+    EMSCRIPTEN_KEEPALIVE EntityId load_glb(void *sceneManager, const char *assetPath, int numInstances, bool keepData)
     {
-        return ((SceneManager *)sceneManager)->loadGlb(assetPath, numInstances);
+        return ((SceneManager *)sceneManager)->loadGlb(assetPath, numInstances, keepData);
     }
 
-    EMSCRIPTEN_KEEPALIVE EntityId load_glb_from_buffer(void *sceneManager, const void *const data, size_t length)
+    EMSCRIPTEN_KEEPALIVE EntityId load_glb_from_buffer(void *sceneManager, const void *const data, size_t length, bool keepData, int priority, int layer)
     {
-        return ((SceneManager *)sceneManager)->loadGlbFromBuffer((const uint8_t *)data, length);
+        return ((SceneManager *)sceneManager)->loadGlbFromBuffer((const uint8_t *)data, length, 1, keepData, priority, layer);
     }
 
     EMSCRIPTEN_KEEPALIVE EntityId create_instance(void *sceneManager, EntityId entityId)
@@ -180,86 +202,104 @@ extern "C"
         return ((SceneManager *)sceneManager)->getInstances(entityId, out);
     }
 
-    EMSCRIPTEN_KEEPALIVE EntityId load_gltf(void *sceneManager, const char *assetPath, const char *relativePath)
+    EMSCRIPTEN_KEEPALIVE EntityId load_gltf(void *sceneManager, const char *assetPath, const char *relativePath, bool keepData)
     {
-        return ((SceneManager *)sceneManager)->loadGltf(assetPath, relativePath);
+        return ((SceneManager *)sceneManager)->loadGltf(assetPath, relativePath, keepData);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_main_camera(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void set_main_camera(TViewer *viewer)
     {
         return ((FilamentViewer *)viewer)->setMainCamera();
     }
 
-    EMSCRIPTEN_KEEPALIVE EntityId get_main_camera(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE EntityId get_main_camera(TViewer *viewer)
     {
         return ((FilamentViewer *)viewer)->getMainCamera();
     }
 
-    EMSCRIPTEN_KEEPALIVE bool set_camera(const void *const viewer, EntityId asset, const char *nodeName)
+    EMSCRIPTEN_KEEPALIVE bool set_camera(TViewer *viewer, EntityId asset, const char *nodeName)
     {
         return ((FilamentViewer *)viewer)->setCamera(asset, nodeName);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_camera_fov(const void *const viewer, float fovInDegrees, float aspect)
+    EMSCRIPTEN_KEEPALIVE float get_camera_fov(TCamera *camera, bool horizontal)
     {
-        return ((FilamentViewer *)viewer)->setCameraFov(double(fovInDegrees), double(aspect));
+        auto cam = reinterpret_cast<filament::Camera *>(camera);
+        return cam->getFieldOfViewInDegrees(horizontal ? Camera::Fov::HORIZONTAL : Camera::Fov::VERTICAL);
     }
 
-    const double *const get_camera_model_matrix(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE double get_camera_focal_length(TCamera *const camera)
     {
-        const auto &modelMatrix = ((FilamentViewer *)viewer)->getCameraModelMatrix();
+        auto cam = reinterpret_cast<filament::Camera *>(camera);
-        double *array = (double *)calloc(16, sizeof(double));
+        return cam->getFocalLength();
-        memcpy(array, modelMatrix.asArray(), 16 * sizeof(double));
-        return array;
     }
 
-    const double *const get_camera_view_matrix(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void set_camera_projection_from_fov(TCamera *camera, double fovInDegrees, double aspect, double near, double far, bool horizontal)
     {
-        const auto &matrix = ((FilamentViewer *)viewer)->getCameraViewMatrix();
+        auto cam = reinterpret_cast<filament::Camera *>(camera);
-        double *array = (double *)calloc(16, sizeof(double));
+        cam->setProjection(fovInDegrees, aspect, near, far, horizontal ? Camera::Fov::HORIZONTAL : Camera::Fov::VERTICAL);
-        memcpy(array, matrix.asArray(), 16 * sizeof(double));
-        return array;
     }
 
-    const double *const get_camera_projection_matrix(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE TCamera *get_camera(TViewer *viewer, EntityId entity)
     {
-        const auto &matrix = ((FilamentViewer *)viewer)->getCameraProjectionMatrix();
+        auto filamentCamera = ((FilamentViewer *)viewer)->getCamera(entity);
-        double *array = (double *)calloc(16, sizeof(double));
+        return reinterpret_cast<TCamera *>(filamentCamera);
-        memcpy(array, matrix.asArray(), 16 * sizeof(double));
-        return array;
     }
 
-    const double *const get_camera_culling_projection_matrix(const void *const viewer)
+    double4x4 get_camera_model_matrix(TCamera *camera)
     {
-        const auto &matrix = ((FilamentViewer *)viewer)->getCameraCullingProjectionMatrix();
+        const auto &mat = reinterpret_cast<filament::Camera *>(camera)->getModelMatrix();
-        double *array = (double *)calloc(16, sizeof(double));
+        return convert_mat4_to_double4x4(mat);
-        memcpy(array, matrix.asArray(), 16 * sizeof(double));
-        return array;
     }
 
-    void set_camera_projection_matrix(const void *const viewer, const double *const matrix, double near, double far)
+    double4x4 get_camera_view_matrix(TCamera *camera)
     {
-        ((FilamentViewer *)viewer)->setCameraProjectionMatrix(matrix, near, far);
+        const auto &mat = reinterpret_cast<filament::Camera *>(camera)->getViewMatrix();
+        return convert_mat4_to_double4x4(mat);
     }
 
-    void set_camera_culling(const void *const viewer, double near, double far)
+    double4x4 get_camera_projection_matrix(TCamera *camera)
     {
-        ((FilamentViewer *)viewer)->setCameraCulling(near, far);
+        const auto &mat = reinterpret_cast<filament::Camera *>(camera)->getProjectionMatrix();
+        return convert_mat4_to_double4x4(mat);
     }
 
-    double get_camera_culling_near(const void *const viewer)
+    double4x4 get_camera_culling_projection_matrix(TCamera *camera)
     {
-        return ((FilamentViewer *)viewer)->getCameraCullingNear();
+        const auto &mat = reinterpret_cast<filament::Camera *>(camera)->getCullingProjectionMatrix();
+        return convert_mat4_to_double4x4(mat);
     }
 
-    double get_camera_culling_far(const void *const viewer)
+    void set_camera_projection_matrix(TCamera *camera, double4x4 matrix, double near, double far)
     {
-        return ((FilamentViewer *)viewer)->getCameraCullingFar();
+        auto cam = reinterpret_cast<filament::Camera *>(camera);
+        const auto &mat = convert_double4x4_to_mat4(matrix);
+        cam->setCustomProjection(mat, near, far);
     }
 
-    const double *const get_camera_frustum(const void *const viewer)
+    void set_camera_lens_projection(TCamera *camera, double near, double far, double aspect, double focalLength)
     {
-        const auto frustum = ((FilamentViewer *)viewer)->getCameraFrustum();
+        auto cam = reinterpret_cast<filament::Camera *>(camera);
+        cam->setLensProjection(focalLength, aspect, near, far);
+    }
+
+    double get_camera_near(TCamera *camera)
+    {
+        auto cam = reinterpret_cast<filament::Camera *>(camera);
+        return cam->getNear();
+    }
+
+    double get_camera_culling_far(TCamera *camera)
+    {
+        auto cam = reinterpret_cast<filament::Camera *>(camera);
+        return cam->getCullingFar();
+    }
+
+    const double *const get_camera_frustum(TCamera *camera)
+    {
+
+        const auto frustum = reinterpret_cast<filament::Camera *>(camera)->getFrustum();
+
         const math::float4 *planes = frustum.getNormalizedPlanes();
         double *array = (double *)calloc(24, sizeof(double));
         for (int i = 0; i < 6; i++)
@@ -274,114 +314,111 @@ extern "C"
         return array;
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_camera_manipulator_options(const void *const viewer, _ManipulatorMode mode, double orbitSpeedX, double orbitSpeedY, double zoomSpeed)
+    EMSCRIPTEN_KEEPALIVE void set_camera_manipulator_options(TViewer *viewer, _ManipulatorMode mode, double orbitSpeedX, double orbitSpeedY, double zoomSpeed)
     {
         ((FilamentViewer *)viewer)->setCameraManipulatorOptions((filament::camutils::Mode)mode, orbitSpeedX, orbitSpeedY, zoomSpeed);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_view_frustum_culling(const void *const viewer, bool enabled)
+    EMSCRIPTEN_KEEPALIVE void set_view_frustum_culling(TViewer *viewer, bool enabled)
     {
         ((FilamentViewer *)viewer)->setViewFrustumCulling(enabled);
     }
 
-    EMSCRIPTEN_KEEPALIVE void move_camera_to_asset(const void *const viewer, EntityId asset)
+    EMSCRIPTEN_KEEPALIVE void set_camera_focus_distance(TCamera *camera, float distance)
     {
-        ((FilamentViewer *)viewer)->moveCameraToAsset(asset);
+        auto *cam = reinterpret_cast<filament::Camera *>(camera);
+        cam->setFocusDistance(distance);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_camera_focus_distance(const void *const viewer, float distance)
+    EMSCRIPTEN_KEEPALIVE void set_camera_exposure(TCamera *camera, float aperture, float shutterSpeed, float sensitivity)
     {
-        ((FilamentViewer *)viewer)->setCameraFocusDistance(distance);
+        auto *cam = reinterpret_cast<filament::Camera *>(camera);
+        cam->setExposure(aperture, shutterSpeed, sensitivity);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_camera_exposure(const void *const viewer, float aperture, float shutterSpeed, float sensitivity)
+    EMSCRIPTEN_KEEPALIVE void set_camera_model_matrix(TCamera *camera, double4x4 matrix)
     {
-        ((FilamentViewer *)viewer)->setCameraExposure(aperture, shutterSpeed, sensitivity);
+        auto *cam = reinterpret_cast<filament::Camera *>(camera);
+        const filament::math::mat4 &mat = convert_double4x4_to_mat4(matrix);
+        cam->setModelMatrix(mat);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_camera_position(const void *const viewer, float x, float y, float z)
+    EMSCRIPTEN_KEEPALIVE bool render(
-    {
+        TViewer *viewer,
-        ((FilamentViewer *)viewer)->setCameraPosition(x, y, z);
-    }
-
-    EMSCRIPTEN_KEEPALIVE void set_camera_rotation(const void *const viewer, float w, float x, float y, float z)
-    {
-        ((FilamentViewer *)viewer)->setCameraRotation(w, x, y, z);
-    }
-
-    EMSCRIPTEN_KEEPALIVE void set_camera_model_matrix(const void *const viewer, const float *const matrix)
-    {
-        ((FilamentViewer *)viewer)->setCameraModelMatrix(matrix);
-    }
-
-    EMSCRIPTEN_KEEPALIVE void set_camera_focal_length(const void *const viewer, float focalLength)
-    {
-        ((FilamentViewer *)viewer)->setCameraFocalLength(focalLength);
-    }
-
-    EMSCRIPTEN_KEEPALIVE void render(
-        const void *const viewer,
         uint64_t frameTimeInNanos,
         void *pixelBuffer,
         void (*callback)(void *buf, size_t size, void *data),
         void *data)
     {
-        ((FilamentViewer *)viewer)->render(frameTimeInNanos, pixelBuffer, callback, data);
+    return ((FilamentViewer *)viewer)->render(frameTimeInNanos, pixelBuffer, callback, data);
     }
 
+    EMSCRIPTEN_KEEPALIVE void capture(
+        TViewer *viewer,
+        uint8_t *pixelBuffer,
+        void (*callback)(void))
+    {
+#ifdef __EMSCRIPTEN__
+        bool useFence = true;
+#else
+        bool useFence = false;
+#endif
+        ((FilamentViewer *)viewer)->capture(pixelBuffer, useFence, callback);
+    };
+
     EMSCRIPTEN_KEEPALIVE void set_frame_interval(
-        const void *const viewer,
+        TViewer *viewer,
         float frameInterval)
     {
         ((FilamentViewer *)viewer)->setFrameInterval(frameInterval);
     }
 
-    EMSCRIPTEN_KEEPALIVE void destroy_swap_chain(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void destroy_swap_chain(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->destroySwapChain();
     }
 
-    EMSCRIPTEN_KEEPALIVE void create_swap_chain(const void *const viewer, const void *const window, uint32_t width, uint32_t height)
+    EMSCRIPTEN_KEEPALIVE void create_swap_chain(TViewer *viewer, const void *const window, uint32_t width, uint32_t height)
     {
         ((FilamentViewer *)viewer)->createSwapChain(window, width, height);
     }
 
-    EMSCRIPTEN_KEEPALIVE void update_viewport_and_camera_projection(const void *const viewer, uint32_t width, uint32_t height, float scaleFactor)
+    EMSCRIPTEN_KEEPALIVE void update_viewport(TViewer *viewer, uint32_t width, uint32_t height)
     {
-        return ((FilamentViewer *)viewer)->updateViewportAndCameraProjection(width, height, scaleFactor);
+        return ((FilamentViewer *)viewer)->updateViewport(width, height);
     }
 
-    EMSCRIPTEN_KEEPALIVE void scroll_update(const void *const viewer, float x, float y, float delta)
+    EMSCRIPTEN_KEEPALIVE void scroll_update(TViewer *viewer, float x, float y, float delta)
     {
         ((FilamentViewer *)viewer)->scrollUpdate(x, y, delta);
     }
 
-    EMSCRIPTEN_KEEPALIVE void scroll_begin(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void scroll_begin(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->scrollBegin();
     }
 
-    EMSCRIPTEN_KEEPALIVE void scroll_end(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void scroll_end(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->scrollEnd();
     }
 
-    EMSCRIPTEN_KEEPALIVE void grab_begin(const void *const viewer, float x, float y, bool pan)
+    EMSCRIPTEN_KEEPALIVE void grab_begin(TViewer *viewer, float x, float y, bool pan)
     {
         ((FilamentViewer *)viewer)->grabBegin(x, y, pan);
     }
 
-    EMSCRIPTEN_KEEPALIVE void grab_update(const void *const viewer, float x, float y)
+    EMSCRIPTEN_KEEPALIVE void grab_update(TViewer *viewer, float x, float y)
     {
         ((FilamentViewer *)viewer)->grabUpdate(x, y);
     }
 
-    EMSCRIPTEN_KEEPALIVE void grab_end(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void grab_end(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->grabEnd();
     }
 
-    EMSCRIPTEN_KEEPALIVE void *get_scene_manager(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void *get_scene_manager(TViewer *viewer)
     {
         return (void *)((FilamentViewer *)viewer)->getSceneManager();
     }
@@ -418,7 +455,8 @@ extern "C"
         return result;
     }
 
-    EMSCRIPTEN_KEEPALIVE void clear_morph_animation(void* sceneManager, EntityId asset) {
+    EMSCRIPTEN_KEEPALIVE void clear_morph_animation(void *sceneManager, EntityId asset)
+    {
         ((SceneManager *)sceneManager)->clearMorphAnimationBuffer(asset);
     }
 
@@ -442,40 +480,42 @@ extern "C"
         ((SceneManager *)sceneManager)->addBoneAnimation(asset, skinIndex, boneIndex, frameData, numFrames, frameLengthInMs, fadeOutInSecs, fadeInInSecs, maxDelta);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_post_processing(void *const viewer, bool enabled)
+    EMSCRIPTEN_KEEPALIVE void set_post_processing(TViewer *viewer, bool enabled)
     {
         ((FilamentViewer *)viewer)->setPostProcessing(enabled);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_shadows_enabled(void *const viewer, bool enabled)
+    EMSCRIPTEN_KEEPALIVE void set_shadows_enabled(TViewer *viewer, bool enabled)
     {
         ((FilamentViewer *)viewer)->setShadowsEnabled(enabled);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_shadow_type(void *const viewer, int shadowType)
+    EMSCRIPTEN_KEEPALIVE void set_shadow_type(TViewer *viewer, int shadowType)
     {
         ((FilamentViewer *)viewer)->setShadowType((ShadowType)shadowType);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_soft_shadow_options(void *const viewer, float penumbraScale, float penumbraRatioScale)
+    EMSCRIPTEN_KEEPALIVE void set_soft_shadow_options(TViewer *viewer, float penumbraScale, float penumbraRatioScale)
     {
         ((FilamentViewer *)viewer)->setSoftShadowOptions(penumbraScale, penumbraRatioScale);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_antialiasing(void *const viewer, bool msaa, bool fxaa, bool taa)
+    EMSCRIPTEN_KEEPALIVE void set_antialiasing(TViewer *viewer, bool msaa, bool fxaa, bool taa)
     {
         ((FilamentViewer *)viewer)->setAntiAliasing(msaa, fxaa, taa);
     }
 
     EMSCRIPTEN_KEEPALIVE EntityId get_bone(void *sceneManager,
-        EntityId entityId,
+                                           EntityId entityId,
-        int skinIndex,
+                                           int skinIndex,
-        int boneIndex) {
+                                           int boneIndex)
-        return ((SceneManager*)sceneManager)->getBone(entityId, skinIndex, boneIndex);
+    {
+        return ((SceneManager *)sceneManager)->getBone(entityId, skinIndex, boneIndex);
     }
     EMSCRIPTEN_KEEPALIVE void get_world_transform(void *sceneManager,
-        EntityId entityId, float* const out) {
+                                                  EntityId entityId, float *const out)
-        auto transform = ((SceneManager*)sceneManager)->getWorldTransform(entityId);
+    {
+        auto transform = ((SceneManager *)sceneManager)->getWorldTransform(entityId);
         out[0] = transform[0][0];
         out[1] = transform[0][1];
         out[2] = transform[0][2];
@@ -495,8 +535,9 @@ extern "C"
     }
 
     EMSCRIPTEN_KEEPALIVE void get_local_transform(void *sceneManager,
-        EntityId entityId, float* const out) {
+                                                  EntityId entityId, float *const out)
-        auto transform = ((SceneManager*)sceneManager)->getLocalTransform(entityId);
+    {
+        auto transform = ((SceneManager *)sceneManager)->getLocalTransform(entityId);
         out[0] = transform[0][0];
         out[1] = transform[0][1];
         out[2] = transform[0][2];
@@ -516,26 +557,32 @@ extern "C"
     }
 
     EMSCRIPTEN_KEEPALIVE void get_rest_local_transforms(void *sceneManager,
-        EntityId entityId, int skinIndex, float* const out, int numBones) {
+                                                        EntityId entityId, int skinIndex, float *const out, int numBones)
-        const auto transforms = ((SceneManager*)sceneManager)->getBoneRestTranforms(entityId, skinIndex);
+    {
+        const auto transforms = ((SceneManager *)sceneManager)->getBoneRestTranforms(entityId, skinIndex);
         auto numTransforms = transforms->size();
-        if(numTransforms != numBones) {
+        if (numTransforms != numBones)
+        {
             Log("Error - %d bone transforms available but you only specified %d.", numTransforms, numBones);
             return;
         }
-        for(int boneIndex = 0; boneIndex < numTransforms; boneIndex++) {
+        for (int boneIndex = 0; boneIndex < numTransforms; boneIndex++)
+        {
             const auto transform = transforms->at(boneIndex);
-            for(int colNum = 0; colNum < 4; colNum++) {
+            for (int colNum = 0; colNum < 4; colNum++)
-                for(int rowNum = 0; rowNum < 4; rowNum++) {
+            {
+                for (int rowNum = 0; rowNum < 4; rowNum++)
+                {
                     out[(boneIndex * 16) + (colNum * 4) + rowNum] = transform[colNum][rowNum];
                 }
             }
-        }        
+        }
     }
-	
+
     EMSCRIPTEN_KEEPALIVE void get_inverse_bind_matrix(void *sceneManager,
-        EntityId entityId, int skinIndex, int boneIndex, float* const out) {
+                                                      EntityId entityId, int skinIndex, int boneIndex, float *const out)
-        auto transform = ((SceneManager*)sceneManager)->getInverseBindMatrix(entityId, skinIndex, boneIndex);
+    {
+        auto transform = ((SceneManager *)sceneManager)->getInverseBindMatrix(entityId, skinIndex, boneIndex);
         out[0] = transform[0][0];
         out[1] = transform[0][1];
         out[2] = transform[0][2];
@@ -586,9 +633,10 @@ extern "C"
         bool loop,
         bool reverse,
         bool replaceActive,
-        float crossfade)
+        float crossfade,
+        float startOffset)
     {
-        ((SceneManager *)sceneManager)->playAnimation(asset, index, loop, reverse, replaceActive, crossfade);
+        ((SceneManager *)sceneManager)->playAnimation(asset, index, loop, reverse, replaceActive, crossfade, startOffset);
     }
 
     EMSCRIPTEN_KEEPALIVE void set_animation_frame(
@@ -624,21 +672,25 @@ extern "C"
         strcpy(outPtr, name.c_str());
     }
 
-    EMSCRIPTEN_KEEPALIVE int get_bone_count(void *sceneManager, EntityId assetEntity, int skinIndex) {
+    EMSCRIPTEN_KEEPALIVE int get_bone_count(void *sceneManager, EntityId assetEntity, int skinIndex)
+    {
         auto names = ((SceneManager *)sceneManager)->getBoneNames(assetEntity, skinIndex);
         return names->size();
     }
 
-    EMSCRIPTEN_KEEPALIVE void get_bone_names(void *sceneManager, EntityId assetEntity, const char** out, int skinIndex) {
+    EMSCRIPTEN_KEEPALIVE void get_bone_names(void *sceneManager, EntityId assetEntity, const char **out, int skinIndex)
+    {
         auto names = ((SceneManager *)sceneManager)->getBoneNames(assetEntity, skinIndex);
-        for(int i = 0; i < names->size(); i++) {
+        for (int i = 0; i < names->size(); i++)
+        {
             auto name_c = names->at(i).c_str();
-            memcpy((void*)out[i], name_c, strlen(name_c) + 1);
+            memcpy((void *)out[i], name_c, strlen(name_c) + 1);
         }
     }
 
-    EMSCRIPTEN_KEEPALIVE bool set_transform(void* sceneManager, EntityId entityId, const float* const transform) {
+    EMSCRIPTEN_KEEPALIVE bool set_transform(void *sceneManager, EntityId entityId, const float *const transform)
-         auto matrix = math::mat4f(
+    {
+        auto matrix = math::mat4f(
             transform[0], transform[1], transform[2],
             transform[3],
             transform[4],
@@ -653,11 +705,12 @@ extern "C"
             transform[13],
             transform[14],
             transform[15]);
-        return ((SceneManager*)sceneManager)->setTransform(entityId, matrix);
+        return ((SceneManager *)sceneManager)->setTransform(entityId, matrix);
     }
 
-    EMSCRIPTEN_KEEPALIVE bool update_bone_matrices(void* sceneManager, EntityId entityId) {
+    EMSCRIPTEN_KEEPALIVE bool update_bone_matrices(void *sceneManager, EntityId entityId)
-        return ((SceneManager*)sceneManager)->updateBoneMatrices(entityId);
+    {
+        return ((SceneManager *)sceneManager)->updateBoneMatrices(entityId);
     }
 
     EMSCRIPTEN_KEEPALIVE int get_morph_target_name_count(void *sceneManager, EntityId assetEntity, EntityId childEntity)
@@ -673,12 +726,12 @@ extern "C"
         strcpy(outPtr, name.c_str());
     }
 
-    EMSCRIPTEN_KEEPALIVE void remove_entity(const void *const viewer, EntityId asset)
+    EMSCRIPTEN_KEEPALIVE void remove_entity(TViewer *viewer, EntityId asset)
     {
         ((FilamentViewer *)viewer)->removeEntity(asset);
     }
 
-    EMSCRIPTEN_KEEPALIVE void clear_entities(const void *const viewer)
+    EMSCRIPTEN_KEEPALIVE void clear_entities(TViewer *viewer)
     {
         ((FilamentViewer *)viewer)->clearEntities();
     }
@@ -713,11 +766,21 @@ extern "C"
         ((SceneManager *)sceneManager)->queuePositionUpdate(asset, x, y, z, relative);
     }
 
+    EMSCRIPTEN_KEEPALIVE void queue_relative_position_update_world_axis(void *sceneManager, EntityId entity, float viewportX, float viewportY, float x, float y, float z)
+    {
+        ((SceneManager *)sceneManager)->queueRelativePositionUpdateWorldAxis(entity, viewportX, viewportY, x, y, z);
+    }
+
     EMSCRIPTEN_KEEPALIVE void queue_rotation_update(void *sceneManager, EntityId asset, float rads, float x, float y, float z, float w, bool relative)
     {
         ((SceneManager *)sceneManager)->queueRotationUpdate(asset, rads, x, y, z, w, relative);
     }
 
+    EMSCRIPTEN_KEEPALIVE void queue_position_update_from_viewport_coords(void *sceneManager, EntityId entity, float viewportX, float viewportY)
+    {
+        ((SceneManager *)sceneManager)->queueRelativePositionUpdateFromViewportVector(entity, viewportX, viewportY);
+    }
+
     EMSCRIPTEN_KEEPALIVE void stop_animation(void *sceneManager, EntityId asset, int index)
     {
         ((SceneManager *)sceneManager)->stopAnimation(asset, index);
@@ -733,7 +796,7 @@ extern "C"
         return ((SceneManager *)sceneManager)->reveal(asset, meshName);
     }
 
-    EMSCRIPTEN_KEEPALIVE void filament_pick(void *const viewer, int x, int y, void (*callback)(EntityId entityId, int x, int y))
+    EMSCRIPTEN_KEEPALIVE void filament_pick(TViewer *viewer, int x, int y, void (*callback)(EntityId entityId, int x, int y))
     {
         ((FilamentViewer *)viewer)->pick(static_cast<uint32_t>(x), static_cast<uint32_t>(y), callback);
     }
@@ -758,12 +821,12 @@ extern "C"
         return ((SceneManager *)sceneManager)->getEntityNameAt(target, index, renderableOnly);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_recording(void *const viewer, bool recording)
+    EMSCRIPTEN_KEEPALIVE void set_recording(TViewer *viewer, bool recording)
     {
         ((FilamentViewer *)viewer)->setRecording(recording);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_recording_output_directory(void *const viewer, const char *outputDirectory)
+    EMSCRIPTEN_KEEPALIVE void set_recording_output_directory(TViewer *viewer, const char *outputDirectory)
     {
         ((FilamentViewer *)viewer)->setRecordingOutputDirectory(outputDirectory);
     }
@@ -792,15 +855,27 @@ extern "C"
     {
         return ((SceneManager *)sceneManager)->addAnimationComponent(entityId);
     }
-    
+
     EMSCRIPTEN_KEEPALIVE void remove_animation_component(void *const sceneManager, EntityId entityId)
     {
         ((SceneManager *)sceneManager)->removeAnimationComponent(entityId);
     }
 
-    EMSCRIPTEN_KEEPALIVE EntityId create_geometry(void *const viewer, float *vertices, int numVertices, uint16_t *indices, int numIndices, int primitiveType, const char *materialPath)
+    EMSCRIPTEN_KEEPALIVE EntityId create_geometry(
+        void *const sceneManager,
+        float *vertices,
+        int numVertices,
+        float *normals,
+        int numNormals,
+        float *uvs,
+        int numUvs,
+        uint16_t *indices,
+        int numIndices,
+        int primitiveType,
+        TMaterialInstance *materialInstance,
+        bool keepData)
     {
-        return ((FilamentViewer *)viewer)->createGeometry(vertices, (uint32_t)numVertices, indices, numIndices, (filament::RenderableManager::PrimitiveType)primitiveType, materialPath);
+        return ((SceneManager *)sceneManager)->createGeometry(vertices, (uint32_t)numVertices, normals, (uint32_t)numNormals, uvs, numUvs, indices, numIndices, (filament::RenderableManager::PrimitiveType)primitiveType, reinterpret_cast<MaterialInstance *>(materialInstance), keepData);
     }
 
     EMSCRIPTEN_KEEPALIVE EntityId find_child_entity_by_name(void *const sceneManager, const EntityId parent, const char *name)
@@ -814,9 +889,14 @@ extern "C"
         return ((SceneManager *)sceneManager)->getParent(child);
     }
 
-    EMSCRIPTEN_KEEPALIVE void set_parent(void *const sceneManager, EntityId child, EntityId parent)
+    EMSCRIPTEN_KEEPALIVE EntityId get_ancestor(void *const sceneManager, EntityId child)
     {
-        ((SceneManager *)sceneManager)->setParent(child, parent);
+        return ((SceneManager *)sceneManager)->getAncestor(child);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_parent(void *const sceneManager, EntityId child, EntityId parent, bool preserveScaling)
+    {
+        ((SceneManager *)sceneManager)->setParent(child, parent, preserveScaling);
     }
 
     EMSCRIPTEN_KEEPALIVE void test_collisions(void *const sceneManager, EntityId entity)
@@ -831,6 +911,166 @@ extern "C"
 
     EMSCRIPTEN_KEEPALIVE void get_gizmo(void *const sceneManager, EntityId *out)
     {
-        return ((SceneManager *)sceneManager)->getGizmo(out);
+        auto gizmo = ((SceneManager *)sceneManager)->gizmo;
+        out[0] = Entity::smuggle(gizmo->x());
+        out[1] = Entity::smuggle(gizmo->y());
+        out[2] = Entity::smuggle(gizmo->z());
+        out[3] = Entity::smuggle(gizmo->center());
     }
+
+    EMSCRIPTEN_KEEPALIVE Aabb2 get_bounding_box(void *const sceneManager, EntityId entity)
+    {
+        return ((SceneManager *)sceneManager)->getBoundingBox(entity);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void get_bounding_box_to_out(void *const sceneManager, EntityId entity, float *minX, float *minY, float *maxX, float *maxY)
+    {
+        auto box = ((SceneManager *)sceneManager)->getBoundingBox(entity);
+        *minX = box.minX;
+        *minY = box.minY;
+        *maxX = box.maxX;
+        *maxY = box.maxY;
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_visibility_layer(void *const sceneManager, EntityId entity, int layer) {
+        ((SceneManager*)sceneManager)->setVisibilityLayer(entity, layer);
+    }
+
+
+    EMSCRIPTEN_KEEPALIVE void set_layer_visibility(void *const sceneManager, int layer, bool visible)
+    {
+        ((SceneManager *)sceneManager)->setLayerVisibility((SceneManager::LAYERS)layer, visible);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void thermion_flutter_free(void *ptr)
+    {
+        free(ptr);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void pick_gizmo(void *const sceneManager, int x, int y, void (*callback)(EntityId entityId, int x, int y))
+    {
+        ((SceneManager *)sceneManager)->gizmo->pick(x, y, callback);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_gizmo_visibility(void *const sceneManager, bool visible)
+    {
+        ((SceneManager *)sceneManager)->gizmo->setVisibility(visible);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_stencil_highlight(void *const sceneManager, EntityId entityId, float r, float g, float b)
+    {
+        ((SceneManager *)sceneManager)->setStencilHighlight(entityId, r, g, b);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void remove_stencil_highlight(void *const sceneManager, EntityId entityId)
+    {
+        ((SceneManager *)sceneManager)->removeStencilHighlight(entityId);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_material_property_float(void *const sceneManager, EntityId entity, int materialIndex, const char *property, float value)
+    {
+        ((SceneManager *)sceneManager)->setMaterialProperty(entity, materialIndex, property, value);
+    }
+
+    EMSCRIPTEN_KEEPALIVE TMaterialInstance* get_material_instance_at(void *const sceneManager, EntityId entity, int materialIndex) {
+        auto instance = ((SceneManager *)sceneManager)->getMaterialInstanceAt(entity, materialIndex);
+        return reinterpret_cast<TMaterialInstance*>(instance);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_material_property_int(void *const sceneManager, EntityId entity, int materialIndex, const char *property, int32_t value)
+    {
+        ((SceneManager *)sceneManager)->setMaterialProperty(entity, materialIndex, property, value);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void set_material_property_float4(void *const sceneManager, EntityId entity, int materialIndex, const char *property, double4 value)
+    {        
+        filament::math::float4 filamentValue;
+        filamentValue.x = static_cast<float32_t>(value.x);
+        filamentValue.y = static_cast<float32_t>(value.y);
+        filamentValue.z = static_cast<float32_t>(value.z);
+        filamentValue.w = static_cast<float32_t>(value.w);
+        ((SceneManager *)sceneManager)->setMaterialProperty(entity, materialIndex, property, filamentValue);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void unproject_texture(TViewer *viewer, EntityId entity, uint8_t* input, uint32_t inputWidth, uint32_t inputHeight, uint8_t *out, uint32_t outWidth, uint32_t outHeight)
+    {
+        ((FilamentViewer *)viewer)->unprojectTexture(entity, input, inputWidth, inputHeight, out, outWidth, outHeight);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void *const create_texture(void *const sceneManager, uint8_t *data, size_t length)
+    {
+        return (void *const)((SceneManager *)sceneManager)->createTexture(data, length, "SOMETEXTURE");
+    }
+
+    EMSCRIPTEN_KEEPALIVE void apply_texture_to_material(void *const sceneManager, EntityId entity, void *const texture, const char *parameterName, int materialIndex)
+    {
+        ((SceneManager *)sceneManager)->applyTexture(entity, reinterpret_cast<Texture *>(texture), parameterName, materialIndex);
+    }
+
+    EMSCRIPTEN_KEEPALIVE void destroy_texture(void *const sceneManager, void *const texture)
+    {
+        ((SceneManager *)sceneManager)->destroyTexture(reinterpret_cast<Texture *>(texture));
+    }
+
+
+ EMSCRIPTEN_KEEPALIVE TMaterialInstance* create_material_instance(void *const sceneManager, TMaterialKey materialConfig)
+{
+
+    filament::gltfio::MaterialKey config;
+    memset(&config, 0, sizeof(MaterialKey));
+
+    // Set and log each field
+    config.unlit = materialConfig.unlit;
+    config.doubleSided = materialConfig.doubleSided;
+    config.useSpecularGlossiness = materialConfig.useSpecularGlossiness;
+    config.alphaMode = static_cast<filament::gltfio::AlphaMode>(materialConfig.alphaMode);
+    config.hasBaseColorTexture = materialConfig.hasBaseColorTexture;
+    config.hasClearCoat = materialConfig.hasClearCoat;
+    config.hasClearCoatNormalTexture = materialConfig.hasClearCoatNormalTexture;
+    config.hasClearCoatRoughnessTexture = materialConfig.hasClearCoatRoughnessTexture;
+    config.hasEmissiveTexture = materialConfig.hasEmissiveTexture;
+    config.hasIOR = materialConfig.hasIOR;
+    config.hasMetallicRoughnessTexture = materialConfig.hasMetallicRoughnessTexture;
+    config.hasNormalTexture = materialConfig.hasNormalTexture;
+    config.hasOcclusionTexture = materialConfig.hasOcclusionTexture;
+    config.hasSheen = materialConfig.hasSheen;
+    config.hasSheenColorTexture = materialConfig.hasSheenColorTexture;
+    config.hasSheenRoughnessTexture = materialConfig.hasSheenRoughnessTexture;
+    config.hasTextureTransforms = materialConfig.hasTextureTransforms;
+    config.hasTransmission = materialConfig.hasTransmission;
+    config.hasTransmissionTexture = materialConfig.hasTransmissionTexture;
+    config.hasVolume = materialConfig.hasVolume;
+    config.hasVolumeThicknessTexture = materialConfig.hasVolumeThicknessTexture;
+    config.baseColorUV = materialConfig.baseColorUV;
+    config.hasVertexColors = materialConfig.hasVertexColors;
+    auto materialInstance = ((SceneManager *)sceneManager)->createUbershaderMaterialInstance(config);
+    return reinterpret_cast<TMaterialInstance*>(materialInstance);
+}
+
+EMSCRIPTEN_KEEPALIVE TMaterialInstance *create_unlit_material_instance(void *const sceneManager) { 
+    auto * instance = ((SceneManager*)sceneManager)->createUnlitMaterialInstance();
+    return reinterpret_cast<TMaterialInstance*>(instance);
+}
+
+EMSCRIPTEN_KEEPALIVE void destroy_material_instance(void *const sceneManager, TMaterialInstance *instance) {
+    ((SceneManager *)sceneManager)->destroy(reinterpret_cast<MaterialInstance*>(instance));
+}
+
+EMSCRIPTEN_KEEPALIVE void MaterialInstance_setDepthWrite(TMaterialInstance* materialInstance, bool enabled) {
+    reinterpret_cast<MaterialInstance*>(materialInstance)->setDepthWrite(enabled);
+}
+EMSCRIPTEN_KEEPALIVE void MaterialInstance_setDepthCulling(TMaterialInstance* materialInstance, bool enabled) {
+    reinterpret_cast<MaterialInstance*>(materialInstance)->setDepthCulling(enabled);
+}
+
+EMSCRIPTEN_KEEPALIVE void Camera_setCustomProjectionWithCulling(TCamera* tCamera, double4x4 projectionMatrix, double near, double far) {
+    auto * camera = reinterpret_cast<Camera*>(tCamera);
+    camera->setCustomProjection(convert_double4x4_to_mat4(projectionMatrix), near, far);
+}
+
+EMSCRIPTEN_KEEPALIVE TCamera *Engine_getCameraComponent(TEngine* tEngine, EntityId entityId) {
+    auto * engine = reinterpret_cast<Engine*>(tEngine);
+    auto * camera = engine->getCameraComponent(utils::Entity::import(entityId));
+    return reinterpret_cast<TCamera*>(camera);
+}
 }

thermion_dart/native/src/ThermionDartFFIApi.cpp

@@ -1,885 +0,0 @@
-#ifdef __EMSCRIPTEN__
-#define GL_GLEXT_PROTOTYPES
-#include <GL/gl.h>
-#include <GL/glext.h>
-
-#include <emscripten/emscripten.h>
-#include <emscripten/bind.h>
-#include <emscripten/html5.h>
-#include <emscripten/threading.h>
-#include <emscripten/val.h>
-
-extern "C"
-{
-  extern EMSCRIPTEN_KEEPALIVE EMSCRIPTEN_WEBGL_CONTEXT_HANDLE thermion_dart_web_create_gl_context();
-}
-#endif
-
-#include "ThermionDartFFIApi.h"
-#include "FilamentViewer.hpp"
-#include "Log.hpp"
-#include "ThreadPool.hpp"
-#include "filament/LightManager.h"
-
-#include <functional>
-#include <mutex>
-#include <thread>
-#include <stdlib.h>
-
-using namespace thermion_filament;
-using namespace std::chrono_literals;
-#include <time.h>
-
-class RenderLoop
-{
-public:
-  explicit RenderLoop()
-  {
-    srand(time(NULL));
-    #ifdef __EMSCRIPTEN__     
-    pthread_attr_t attr;
-    pthread_attr_init(&attr);
-    emscripten_pthread_attr_settransferredcanvases(&attr, "canvas");
-    pthread_create(&t, &attr, &RenderLoop::startHelper, this);
-    #else
-    t = new std::thread([this]() {
-      start();
-    });
-    #endif
-  }
-
-  ~RenderLoop()
-  {
-    _stop = true;
-    #ifdef __EMSCRIPTEN__     
-    pthread_join(t, NULL);
-    #else
-    t->join();
-    #endif
-    Log("Render loop killed");
-  }
-
-  static void mainLoop(void* arg) {
-    ((RenderLoop*)arg)->iter();
-  }
-
-  static void *startHelper(void * parm) {
-    #ifdef __EMSCRIPTEN__     
-    emscripten_set_main_loop_arg(&RenderLoop::mainLoop, parm, 0, true);
-    #else
-    ((RenderLoop*)parm)->start();
-    #endif
-    return nullptr;
-  }
-
-  void start() { 
-    while (!_stop) {
-      iter();
-    } 
-  }
-
-  void iter() { 
-    
-    auto frameStart = std::chrono::high_resolution_clock::now();
-    if (_rendering) {
-      doRender();
-    }
-
-    auto now = std::chrono::high_resolution_clock::now();
-
-    auto elapsed = std::chrono::duration_cast<std::chrono::microseconds>(now - frameStart).count();
-
-    std::function<void()> task;
-
-    std::unique_lock<std::mutex> lock(_access);
-    while(true) {
-        now = std::chrono::high_resolution_clock::now();
-        elapsed = std::chrono::duration_cast<std::chrono::microseconds>(now - frameStart).count();
-        if(elapsed >= _frameIntervalInMicroseconds) {
-            break;
-        }
-        if(!_tasks.empty()) {
-          task = std::move(_tasks.front());
-          _tasks.pop_front();
-          task();
-        } else { 
-          _cond.wait_for(lock, std::chrono::duration<float, std::milli>(1));
-        }
-    }
-  }
-
-  void createViewer(void *const context, 
-                    void *const platform,
-                    const char *uberArchivePath,
-                    const ResourceLoaderWrapper *const loader,
-                    void (*renderCallback)(void *),
-                    void *const owner,
-                    void (*callback)(void *const))
-  {
-    _renderCallback = renderCallback;
-    _renderCallbackOwner = owner;
-    std::packaged_task<void()> lambda([=]() mutable
-                                                  {
-#ifdef __EMSCRIPTEN__     
-        _context = thermion_dart_web_create_gl_context();
-
-        auto success = emscripten_webgl_make_context_current((EMSCRIPTEN_WEBGL_CONTEXT_HANDLE)_context);
-        if(success != EMSCRIPTEN_RESULT_SUCCESS) {
-          std::cout << "Failed to make context current." << std::endl;
-          return;
-        }
-        glClearColor(0.0, 0.5, 0.5, 1.0);
-        glClear(GL_COLOR_BUFFER_BIT);
-        // emscripten_webgl_commit_frame();
-
-        _viewer = (FilamentViewer*) create_filament_viewer((void* const) _context, loader, platform, uberArchivePath);
-        MAIN_THREAD_EM_ASM({
-          moduleArg.dartFilamentResolveCallback($0, $1);
-        }, callback, _viewer);
-#else
-        _viewer = (FilamentViewer*)create_filament_viewer(context, loader, platform, uberArchivePath);
-        callback(_viewer);
-#endif
-    });
-    auto fut = add_task(lambda);
-  }
-
-  void destroyViewer(FilamentViewer* viewer) 
-  {
-    std::packaged_task<void()> lambda([=]() mutable {
-      _rendering = false;
-      _viewer = nullptr;
-      destroy_filament_viewer(viewer);
-    });
-    auto fut = add_task(lambda);
-  }
-
-  void setRendering(bool rendering, void(*callback)())
-  {
-    std::packaged_task<void()> lambda(
-        [=]() mutable
-        { 
-          this->_rendering = rendering; 
-            #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, callback);
-          #else
-            callback();
-          #endif
-      });
-    auto fut = add_task(lambda);
-  }
-
-  void doRender()
-  {
-    #ifdef __EMSCRIPTEN__
-    if(emscripten_is_webgl_context_lost(_context) == EM_TRUE) {
-      Log("Context lost");
-      auto sleepFor = std::chrono::seconds(1);
-      std::this_thread::sleep_for(sleepFor);
-      return;
-    }
-    #endif
-    render(_viewer, 0, nullptr, nullptr, nullptr);
-    if (_renderCallback)
-    {
-      _renderCallback(_renderCallbackOwner);
-    }
-#ifdef __EMSCRIPTEN__
-    // emscripten_webgl_commit_frame();
-#endif
-  }
-
-  void setFrameIntervalInMilliseconds(float frameIntervalInMilliseconds)
-  {
-    _frameIntervalInMicroseconds = static_cast<int>(1000.0f * frameIntervalInMilliseconds);
-  }
-
-  template <class Rt>
-  auto add_task(std::packaged_task<Rt()> &pt) -> std::future<Rt>
-  {
-    std::unique_lock<std::mutex> lock(_access);
-    auto ret = pt.get_future();
-    _tasks.push_back([pt = std::make_shared<std::packaged_task<Rt()>>(
-                          std::move(pt))]
-                     { (*pt)(); });
-    _cond.notify_one();
-    return ret;
-  }
-
-  bool _stop = false;
-  bool _rendering = false;
-  int _frameIntervalInMicroseconds = 1000000.0 / 60.0;
-  std::mutex _access;
-  void (*_renderCallback)(void *const) = nullptr;
-  void *_renderCallbackOwner = nullptr;
-
-  
-  std::condition_variable _cond;
-  std::deque<std::function<void()>> _tasks;
-  FilamentViewer* _viewer = nullptr;
-  #ifdef __EMSCRIPTEN__
-  pthread_t t;
-  EMSCRIPTEN_WEBGL_CONTEXT_HANDLE _context;
-  int _frameNum = 0;
-  #else
-  std::thread *t = nullptr;
-  #endif
-};
-
-extern "C"
-{
-
-  static RenderLoop *_rl;
-
-  EMSCRIPTEN_KEEPALIVE void create_filament_viewer_ffi(
-      void *const context, void *const platform, const char *uberArchivePath,
-      const void *const loader,
-      void (*renderCallback)(void *const renderCallbackOwner),
-      void *const renderCallbackOwner,
-      void (*callback)(void *const))
-  {
-
-    if (!_rl)
-    {
-      _rl = new RenderLoop();
-    }
-    _rl->createViewer(context, platform, uberArchivePath, (const ResourceLoaderWrapper *const)loader,
-                      renderCallback, renderCallbackOwner, callback);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer_ffi(void *const viewer)
-  {
-    _rl->destroyViewer((FilamentViewer*)viewer);
-    delete _rl;
-    _rl = nullptr;
-  }
-
-  EMSCRIPTEN_KEEPALIVE void create_swap_chain_ffi(void *const viewer,
-                                                   void *const surface,
-                                                   uint32_t width,
-                                                   uint32_t height,
-                                                   void (*onComplete)())
-  {
-    Log("Creating swapchain %dx%d with viewer %lu & surface %lu", width, height, viewer, surface);
-    std::packaged_task<void()> lambda(
-        [=]() mutable
-        {
-          create_swap_chain(viewer, surface, width, height);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, onComplete);
-          #else
-          onComplete();
-          #endif
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void destroy_swap_chain_ffi(void *const viewer, void (*onComplete)())
-  {
-    Log("Destroying swapchain");
-    std::packaged_task<void()> lambda(
-        [=]() mutable
-        {
-          destroy_swap_chain(viewer);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, onComplete);
-          #else
-          onComplete();
-          #endif
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void create_render_target_ffi(void *const viewer,
-                                                      intptr_t nativeTextureId,
-                                                      uint32_t width,
-                                                      uint32_t height,
-                                                      void (*onComplete)())
-  {
-    std::packaged_task<void()> lambda([=]() mutable
-                                      {
-    create_render_target(viewer, nativeTextureId, width, height);
-    #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, onComplete);
-    #else
-    onComplete(); 
-    #endif
-    });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void update_viewport_and_camera_projection_ffi(
-      void *const viewer, const uint32_t width, const uint32_t height,
-      const float scaleFactor,
-      void (*onComplete)())
-  {
-    Log("Update viewport  %dx%d", width, height);
-    std::packaged_task<void()> lambda([=]() mutable
-                                      {
-    update_viewport_and_camera_projection(viewer, width, height, scaleFactor);
-    #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, onComplete);
-    #else
-    onComplete(); 
-    #endif
-    });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void set_rendering_ffi(void *const viewer,
-                                               bool rendering, void (*callback)())
-  {
-    if (!_rl)
-    {
-      Log("No render loop!"); // PANIC?
-    }
-    else
-    {
-      _rl->setRendering(rendering, callback);
-      if (rendering)
-      {
-        Log("Set rendering to true");
-      }
-      else
-      {
-        Log("Set rendering to false");
-      }
-    }
-  }
-
-  EMSCRIPTEN_KEEPALIVE void
-  set_frame_interval_ffi(void* const viewer, float frameIntervalInMilliseconds)
-  {
-    _rl->setFrameIntervalInMilliseconds(frameIntervalInMilliseconds);
-    std::packaged_task<void()> lambda([=]() mutable
-                                      { ((FilamentViewer*)viewer)->setFrameInterval(frameIntervalInMilliseconds); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void render_ffi(void *const viewer)
-  {
-    std::packaged_task<void()> lambda([=]() mutable
-                                      { _rl->doRender(); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void
-  set_background_color_ffi(void *const viewer, const float r, const float g,
-                           const float b, const float a)
-  {
-    std::packaged_task<void()> lambda(
-        [=]() mutable
-        { set_background_color(viewer, r, g, b, a); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void load_gltf_ffi(void *const sceneManager,
-                                           const char *path,
-                                           const char *relativeResourcePath,
-                                           void (*callback)(EntityId))
-  {
-    std::packaged_task<EntityId()> lambda([=]() mutable
-                                          {
-    auto entity = load_gltf(sceneManager, path, relativeResourcePath);
-    #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0, $1);
-          }, callback, entity);
-    #else
-      callback(entity);
-    #endif
-    return entity; });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void load_glb_ffi(void *const sceneManager,
-                                          const char *path, int numInstances, void (*callback)(EntityId))
-  {
-    std::packaged_task<EntityId()> lambda(
-        [=]() mutable
-        {
-          auto entity = load_glb(sceneManager, path, numInstances);
-           #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0, $1);
-          }, callback, entity);
-          #else
-            callback(entity);
-          #endif
-          return entity;
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void load_glb_from_buffer_ffi(void *const sceneManager,
-                                                      const void *const data, size_t length, int numInstances, void (*callback)(EntityId))
-  {
-    std::packaged_task<EntityId()> lambda(
-        [=]() mutable
-        {
-          auto entity = load_glb_from_buffer(sceneManager, data, length);
-          callback(entity);
-          return entity;
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void clear_background_image_ffi(void *const viewer)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { clear_background_image(viewer); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void set_background_image_ffi(void *const viewer,
-                                                      const char *path,
-                                                      bool fillHeight, void (*callback)())
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        {
-          set_background_image(viewer, path, fillHeight);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, callback);
-          #else
-          callback(); 
-          #endif
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-  EMSCRIPTEN_KEEPALIVE void set_background_image_position_ffi(void *const viewer,
-                                                               float x, float y,
-                                                               bool clamp)
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        { set_background_image_position(viewer, x, y, clamp); });
-    auto fut = _rl->add_task(lambda);
-  }
-  EMSCRIPTEN_KEEPALIVE void set_tone_mapping_ffi(void *const viewer,
-                                                  int toneMapping)
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        { set_tone_mapping(viewer, toneMapping); });
-    auto fut = _rl->add_task(lambda);
-  }
-  EMSCRIPTEN_KEEPALIVE void set_bloom_ffi(void *const viewer, float strength)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { set_bloom(viewer, strength); });
-    auto fut = _rl->add_task(lambda);
-  }
-  EMSCRIPTEN_KEEPALIVE void load_skybox_ffi(void *const viewer,
-                                             const char *skyboxPath,
-                                             void (*onComplete)())
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { 
-        load_skybox(viewer, skyboxPath); 
-        #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, onComplete);
-        #else
-        onComplete(); 
-        #endif
-    });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void load_ibl_ffi(void *const viewer, const char *iblPath,
-                                          float intensity)
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        { load_ibl(viewer, iblPath, intensity); });
-    auto fut = _rl->add_task(lambda);
-  }
-  EMSCRIPTEN_KEEPALIVE void remove_skybox_ffi(void *const viewer)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { remove_skybox(viewer); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void remove_ibl_ffi(void *const viewer)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { remove_ibl(viewer); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  void add_light_ffi(
-    void *const viewer, 
-    uint8_t type, 
-    float colour,
-    float intensity,
-    float posX,
-    float posY,
-    float posZ,
-    float dirX,
-    float dirY,
-    float dirZ,
-    float falloffRadius,
-    float spotLightConeInner,
-    float spotLightConeOuter,
-    float sunAngularRadius,
-    float sunHaloSize,
-    float sunHaloFallof,
-    bool shadows,
-    void (*callback)(EntityId))
-  {
-    std::packaged_task<EntityId()> lambda([=]
-                                          {
-    auto entity = add_light(
-      viewer, 
-      type,
-      colour,
-      intensity,
-      posX,
-      posY,
-      posZ,
-      dirX,
-      dirY,
-      dirZ,
-      falloffRadius,
-      spotLightConeInner,
-      spotLightConeOuter,
-      sunAngularRadius, 
-      sunHaloSize,
-      sunHaloFallof,
-      shadows);
-      #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0, $1);
-          }, callback, entity);
-      #else
-      callback(entity);
-      #endif
-    
-    return entity; });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void remove_light_ffi(void *const viewer,
-                                              EntityId entityId)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { remove_light(viewer, entityId); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void clear_lights_ffi(void *const viewer)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { clear_lights(viewer); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void remove_entity_ffi(void *const viewer,
-                                               EntityId asset, void (*callback)())
-  {
-    std::packaged_task<void()> lambda([=]
-                                      {   
-    remove_entity(viewer, asset); 
-    #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, callback);
-    #else
-    callback(); 
-    #endif
-    });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void clear_entities_ffi(void *const viewer, void (*callback)())
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { 
-      clear_entities(viewer); 
-      #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, callback);
-      #else
-      callback(); 
-      #endif
-    });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void set_camera_ffi(void *const viewer, EntityId asset,
-                                            const char *nodeName, void (*callback)(bool))
-  {
-    std::packaged_task<bool()> lambda(
-        [=]
-        {
-          auto success = set_camera(viewer, asset, nodeName);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0,$1);
-          }, callback, success);
-          #else
-          callback(success);
-          #endif
-          return success;
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void
-  get_morph_target_name_ffi(void *sceneManager, EntityId assetEntity,
-                            EntityId childEntity, char *const outPtr, int index, void (*callback)())
-  {
-    std::packaged_task<void()> lambda([=]
-                                      {
-    get_morph_target_name(sceneManager, assetEntity, childEntity, outPtr, index);
-    #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-        }, callback);
-    #else
-    callback(); 
-    #endif
-    });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void
-  get_morph_target_name_count_ffi(void *sceneManager, EntityId assetEntity,
-                                  EntityId childEntity, void (*callback)(int))
-  {
-    std::packaged_task<int()> lambda([=]
-                                     {
-    auto count = get_morph_target_name_count(sceneManager, assetEntity, childEntity);
-    #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0,$1);
-          }, callback, count);
-    #else
-    callback(count);
-    #endif
-    return count; });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void play_animation_ffi(void *const sceneManager,
-                                                EntityId asset, int index,
-                                                bool loop, bool reverse,
-                                                bool replaceActive,
-                                                float crossfade)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { play_animation(sceneManager, asset, index, loop, reverse, replaceActive,
-                                                       crossfade); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void set_animation_frame_ffi(void *const sceneManager,
-                                                     EntityId asset,
-                                                     int animationIndex,
-                                                     int animationFrame)
-  {
-    std::packaged_task<void()> lambda([=]
-                                      { set_animation_frame(sceneManager, asset, animationIndex, animationFrame); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void stop_animation_ffi(void *const sceneManager,
-                                                EntityId asset, int index)
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        { stop_animation(sceneManager, asset, index); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void get_animation_count_ffi(void *const sceneManager,
-                                                     EntityId asset,
-                                                     void (*callback)(int))
-  {
-    std::packaged_task<int()> lambda(
-        [=]
-        {
-          auto count = get_animation_count(sceneManager, asset);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0,$1);
-          }, callback, count);
-          #else
-          callback(count);
-          #endif
-          return count;
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void get_animation_name_ffi(void *const sceneManager,
-                                                    EntityId asset,
-                                                    char *const outPtr,
-                                                    int index,
-                                                    void (*callback)())
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        {
-          get_animation_name(sceneManager, asset, outPtr, index);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, callback);
-          #else
-          callback();
-          #endif
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void set_post_processing_ffi(void *const viewer,
-                                                     bool enabled)
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        { set_post_processing(viewer, enabled); });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void
-  get_name_for_entity_ffi(void *const sceneManager, const EntityId entityId, void (*callback)(const char *))
-  {
-    std::packaged_task<const char *()> lambda(
-        [=]
-        {
-          auto name = get_name_for_entity(sceneManager, entityId);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0,$1);
-          }, callback, name);
-          #else
-          callback(name);
-          #endif
-          return name;
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  void set_morph_target_weights_ffi(void *const sceneManager,
-                                    EntityId asset,
-                                    const float *const morphData,
-                                    int numWeights,
-                                    void (*callback)(bool))
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        {
-          auto result = set_morph_target_weights(sceneManager, asset, morphData, numWeights);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0,$1);
-          }, callback, result);
-          #else
-          callback(result);
-          #endif
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void set_bone_transform_ffi(
-      void *sceneManager,
-      EntityId asset,
-      int skinIndex,
-      int boneIndex,
-      const float *const transform,
-      void (*callback)(bool))
-  {
-    std::packaged_task<bool()> lambda(
-        [=]
-        {
-          auto success = set_bone_transform(sceneManager, asset, skinIndex, boneIndex, transform);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0,$1);
-          }, callback, success);
-          #else
-          callback(success);
-          #endif
-          return success;
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void update_bone_matrices_ffi(void *sceneManager,
-        EntityId entity, void(*callback)(bool)) {
-    std::packaged_task<void()> lambda(
-        [=]
-        { 
-          auto success = update_bone_matrices(sceneManager, entity);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, callback, success);
-          #else
-          callback(success);
-          #endif
-         });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void reset_to_rest_pose_ffi(void *const sceneManager, EntityId entityId, void(*callback)())
-  {
-    std::packaged_task<void()> lambda(
-        [=]
-        { 
-          reset_to_rest_pose(sceneManager, entityId); 
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0);
-          }, callback);
-          #else
-          callback();
-          #endif
-          });
-    auto fut = _rl->add_task(lambda);
-  }
-
-  EMSCRIPTEN_KEEPALIVE void create_geometry_ffi(
-    void *const viewer, 
-    float *vertices, 
-    int numVertices, 
-    uint16_t *indices, 
-    int numIndices, 
-    int primitiveType, 
-    const char *materialPath, 
-    void (*callback)(EntityId))
-  {
-    std::packaged_task<EntityId()> lambda(
-        [=]
-        {
-          auto entity = create_geometry(viewer, vertices, numVertices, indices, numIndices, primitiveType, materialPath);
-          #ifdef __EMSCRIPTEN__
-          MAIN_THREAD_EM_ASM({
-            moduleArg.dartFilamentResolveCallback($0,$1);
-          }, callback, entity);
-          #else
-          callback(entity);
-          #endif
-          return entity;
-        });
-    auto fut = _rl->add_task(lambda);
-  }
-
-}

thermion_dart/native/src/ThermionDartRenderThreadApi.cpp

@@ -0,0 +1,848 @@
+#ifdef __EMSCRIPTEN__
+#define GL_GLEXT_PROTOTYPES
+#include <GL/gl.h>
+#include <GL/glext.h>
+
+#include <emscripten/emscripten.h>
+#include <emscripten/bind.h>
+#include <emscripten/html5.h>
+#include <emscripten/threading.h>
+#include <emscripten/val.h>
+
+extern "C"
+{
+  extern EMSCRIPTEN_KEEPALIVE EMSCRIPTEN_WEBGL_CONTEXT_HANDLE thermion_dart_web_create_gl_context();
+}
+#endif
+
+#include "ThermionDartRenderThreadApi.h"
+#include "FilamentViewer.hpp"
+#include "Log.hpp"
+#include "ThreadPool.hpp"
+#include "filament/LightManager.h"
+
+#include <functional>
+#include <mutex>
+#include <thread>
+#include <stdlib.h>
+
+using namespace thermion_filament;
+using namespace std::chrono_literals;
+#include <time.h>
+
+class RenderLoop
+{
+public:
+  explicit RenderLoop()
+  {
+    srand(time(NULL));
+#ifdef __EMSCRIPTEN__
+    pthread_attr_t attr;
+    pthread_attr_init(&attr);
+    emscripten_pthread_attr_settransferredcanvases(&attr, "canvas");
+    pthread_create(&t, &attr, &RenderLoop::startHelper, this);
+#else
+    t = new std::thread([this]()
+                        { start(); });
+#endif
+  }
+
+  ~RenderLoop()
+  {
+    _render = false;
+    _stop = true;
+    _cv.notify_one();
+#ifdef __EMSCRIPTEN__
+    pthread_join(t, NULL);
+#else
+    t->join();
+#endif
+  }
+
+  static void mainLoop(void *arg)
+  {
+    ((RenderLoop *)arg)->iter();
+  }
+
+  static void *startHelper(void *parm)
+  {
+#ifdef __EMSCRIPTEN__
+    emscripten_set_main_loop_arg(&RenderLoop::mainLoop, parm, 0, true);
+#else
+    ((RenderLoop *)parm)->start();
+#endif
+    return nullptr;
+  }
+
+  void start()
+  {
+    while (!_stop)
+    {
+      iter();
+    }
+  }
+
+  void requestFrame()
+  {
+    this->_render = true;
+  }
+
+   void iter()
+  {
+    std::unique_lock<std::mutex> lock(_mutex);
+    if (_render)
+    {
+      doRender();
+      _render = false;
+
+      // Calculate and print FPS
+      auto currentTime = std::chrono::high_resolution_clock::now();
+      float deltaTime = std::chrono::duration<float, std::chrono::seconds::period>(currentTime - _lastFrameTime).count();
+      _lastFrameTime = currentTime;
+
+      _frameCount++;
+      _accumulatedTime += deltaTime;
+
+      if (_accumulatedTime >= 1.0f) // Update FPS every second
+      {
+        _fps = _frameCount / _accumulatedTime;
+        std::cout << "FPS: " << _fps << std::endl;
+        _frameCount = 0;
+        _accumulatedTime = 0.0f;
+      }
+    }
+    if (!_tasks.empty())
+    {
+      auto task = std::move(_tasks.front());
+      _tasks.pop_front();
+      lock.unlock();
+      task();
+      lock.lock();
+    }
+
+    _cv.wait_for(lock, std::chrono::microseconds(1000), [this]
+                 { return !_tasks.empty() || _stop || _render; });
+
+    if (_stop)
+      return;
+  }
+
+  void createViewer(void *const context,
+                    void *const platform,
+                    const char *uberArchivePath,
+                    const ResourceLoaderWrapper *const loader,
+                    void (*renderCallback)(void *),
+                    void *const owner,
+                    void (*callback)(TViewer*))
+  {
+    _renderCallback = renderCallback;
+    _renderCallbackOwner = owner;
+    std::packaged_task<void()> lambda([=]() mutable
+                                      {
+#ifdef __EMSCRIPTEN__
+                                        _context = thermion_dart_web_create_gl_context();
+
+                                        auto success = emscripten_webgl_make_context_current((EMSCRIPTEN_WEBGL_CONTEXT_HANDLE)_context);
+                                        if (success != EMSCRIPTEN_RESULT_SUCCESS)
+                                        {
+                                          std::cout << "Failed to make context current." << std::endl;
+                                          return;
+                                        }
+                                        glClearColor(0.0, 0.5, 0.5, 1.0);
+                                        glClear(GL_COLOR_BUFFER_BIT);
+                                        // emscripten_webgl_commit_frame();
+
+                                        _viewer = (FilamentViewer *)create_filament_viewer((void *const)_context, loader, platform, uberArchivePath);
+                                        MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, _viewer);
+#else
+                                        auto viewer = (FilamentViewer *)create_filament_viewer(context, loader, platform, uberArchivePath);
+                                        _viewer = reinterpret_cast<TViewer*>(viewer);
+                                        callback(_viewer);
+#endif
+                                      });
+    auto fut = add_task(lambda);
+  }
+
+  void destroyViewer(FilamentViewer *viewer)
+  {
+    std::packaged_task<void()> lambda([=]() mutable
+                                      {
+      _render = false;
+      _viewer = nullptr;
+      destroy_filament_viewer(reinterpret_cast<TViewer*>(viewer)); });
+    auto fut = add_task(lambda);
+    fut.wait();
+  }
+
+  bool doRender()
+  {
+#ifdef __EMSCRIPTEN__
+    if (emscripten_is_webgl_context_lost(_context) == EM_TRUE)
+    {
+      Log("Context lost");
+      auto sleepFor = std::chrono::seconds(1);
+      std::this_thread::sleep_for(sleepFor);
+      return;
+    }
+#endif
+    auto rendered = render(_viewer, 0, nullptr, nullptr, nullptr);
+    if (_renderCallback)
+    {
+      _renderCallback(_renderCallbackOwner);
+    }
+    return rendered;
+#ifdef __EMSCRIPTEN__
+    // emscripten_webgl_commit_frame();
+#endif
+  }
+
+  void setFrameIntervalInMilliseconds(float frameIntervalInMilliseconds)
+  {
+    std::unique_lock<std::mutex> lock(_mutex);
+    _frameIntervalInMicroseconds = static_cast<int>(1000.0f * frameIntervalInMilliseconds);
+  }
+
+  template <class Rt>
+  auto add_task(std::packaged_task<Rt()> &pt) -> std::future<Rt>
+  {
+    std::unique_lock<std::mutex> lock(_mutex);
+    auto ret = pt.get_future();
+    _tasks.push_back([pt = std::make_shared<std::packaged_task<Rt()>>(
+                          std::move(pt))]
+                     { (*pt)(); });
+    _cv.notify_one();
+    return ret;
+  }
+
+private:
+  bool _stop = false;
+  bool _render = false;
+  int _frameIntervalInMicroseconds = 1000000 / 60;
+  std::mutex _mutex;
+  std::condition_variable _cv;
+  void (*_renderCallback)(void *const) = nullptr;
+  void *_renderCallbackOwner = nullptr;
+  std::deque<std::function<void()>> _tasks;
+  TViewer *_viewer = nullptr;
+  std::chrono::high_resolution_clock::time_point _lastFrameTime;
+  int _frameCount = 0;
+  float _accumulatedTime = 0.0f;
+  float _fps = 0.0f;
+
+#ifdef __EMSCRIPTEN__
+  pthread_t t;
+  EMSCRIPTEN_WEBGL_CONTEXT_HANDLE _context;
+#else
+  std::thread *t = nullptr;
+#endif
+};
+
+extern "C"
+{
+
+  static RenderLoop *_rl;
+
+  EMSCRIPTEN_KEEPALIVE void create_filament_viewer_render_thread(
+      void *const context, void *const platform, const char *uberArchivePath,
+      const void *const loader,
+      void (*renderCallback)(void *const renderCallbackOwner),
+      void *const renderCallbackOwner,
+      void (*callback)(TViewer *))
+  {
+
+    if (!_rl)
+    {
+      _rl = new RenderLoop();
+    }
+    _rl->createViewer(context, platform, uberArchivePath, (const ResourceLoaderWrapper *const)loader,
+                      renderCallback, renderCallbackOwner, callback);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void destroy_filament_viewer_render_thread(TViewer *viewer)
+  {
+    _rl->destroyViewer((FilamentViewer *)viewer);
+    delete _rl;
+    _rl = nullptr;
+  }
+
+  EMSCRIPTEN_KEEPALIVE void create_swap_chain_render_thread(TViewer *viewer,
+                                                            void *const surface,
+                                                            uint32_t width,
+                                                            uint32_t height,
+                                                            void (*onComplete)())
+  {
+    std::packaged_task<void()> lambda(
+        [=]() mutable
+        {
+          create_swap_chain(viewer, surface, width, height);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, onComplete);
+#else
+          onComplete();
+#endif
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void destroy_swap_chain_render_thread(TViewer *viewer, void (*onComplete)())
+  {
+    std::packaged_task<void()> lambda(
+        [=]() mutable
+        {
+          destroy_swap_chain(viewer);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, onComplete);
+#else
+          onComplete();
+#endif
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void create_render_target_render_thread(TViewer *viewer,
+                                                               intptr_t nativeTextureId,
+                                                               uint32_t width,
+                                                               uint32_t height,
+                                                               void (*onComplete)())
+  {
+    std::packaged_task<void()> lambda([=]() mutable
+                                      {
+                                        create_render_target(viewer, nativeTextureId, width, height);
+#ifdef __EMSCRIPTEN__
+                                        MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, onComplete);
+#else
+                                        onComplete();
+#endif
+                                      });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void request_frame_render_thread(TViewer *viewer)
+  {
+    if (!_rl)
+    {
+      Log("No render loop!"); // PANIC?
+    }
+    else
+    {
+      _rl->requestFrame();
+    }
+  }
+
+  EMSCRIPTEN_KEEPALIVE void
+  set_frame_interval_render_thread(TViewer *viewer, float frameIntervalInMilliseconds)
+  {
+    _rl->setFrameIntervalInMilliseconds(frameIntervalInMilliseconds);
+    std::packaged_task<void()> lambda([=]() mutable
+                                      { ((FilamentViewer *)viewer)->setFrameInterval(frameIntervalInMilliseconds); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void render_render_thread(TViewer *viewer)
+  {
+    std::packaged_task<void()> lambda([=]() mutable
+                                      { _rl->doRender(); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void capture_render_thread(TViewer *viewer, uint8_t *pixelBuffer, void (*onComplete)())
+  {
+    std::packaged_task<void()> lambda([=]() mutable
+                                      { capture(viewer, pixelBuffer, onComplete); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void
+  set_background_color_render_thread(TViewer *viewer, const float r, const float g,
+                                     const float b, const float a)
+  {
+    std::packaged_task<void()> lambda(
+        [=]() mutable
+        { set_background_color(viewer, r, g, b, a); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void load_gltf_render_thread(void *const sceneManager,
+                                                    const char *path,
+                                                    const char *relativeResourcePath,
+                                                    bool keepData,
+                                                    void (*callback)(EntityId))
+  {
+    std::packaged_task<EntityId()> lambda([=]() mutable
+                                          {
+    auto entity = load_gltf(sceneManager, path, relativeResourcePath, keepData);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({
+            moduleArg.dartFilamentResolveCallback($0, $1);
+          }, callback, entity);
+#else
+      callback(entity);
+#endif
+    return entity; });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void load_glb_render_thread(void *const sceneManager,
+                                                   const char *path,
+                                                   int numInstances,
+                                                   bool keepData,
+                                                   void (*callback)(EntityId))
+  {
+    std::packaged_task<EntityId()> lambda(
+        [=]() mutable
+        {
+          auto entity = load_glb(sceneManager, path, numInstances, keepData);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, entity);
+#else
+          callback(entity);
+#endif
+          return entity;
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void load_glb_from_buffer_render_thread(void *const sceneManager,
+                                                               const uint8_t *const data,
+                                                               size_t length,
+                                                               int numInstances,
+                                                               bool keepData,
+                                                               int priority,
+                                                               int layer,
+                                                               void (*callback)(EntityId))
+  {
+    std::packaged_task<EntityId()> lambda(
+        [=]() mutable
+        {
+          auto entity = load_glb_from_buffer(sceneManager, data, length, keepData, priority, layer);
+          callback(entity);
+          return entity;
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void clear_background_image_render_thread(TViewer *viewer)
+  {
+    std::packaged_task<void()> lambda([=]
+                                      { clear_background_image(viewer); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void set_background_image_render_thread(TViewer *viewer,
+                                                               const char *path,
+                                                               bool fillHeight, void (*callback)())
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        {
+          set_background_image(viewer, path, fillHeight);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, callback);
+#else
+          callback();
+#endif
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+  EMSCRIPTEN_KEEPALIVE void set_background_image_position_render_thread(TViewer *viewer,
+                                                                        float x, float y,
+                                                                        bool clamp)
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        { set_background_image_position(viewer, x, y, clamp); });
+    auto fut = _rl->add_task(lambda);
+  }
+  EMSCRIPTEN_KEEPALIVE void set_tone_mapping_render_thread(TViewer *viewer,
+                                                           int toneMapping)
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        { set_tone_mapping(viewer, toneMapping); });
+    auto fut = _rl->add_task(lambda);
+  }
+  EMSCRIPTEN_KEEPALIVE void set_bloom_render_thread(TViewer *viewer, float strength)
+  {
+    std::packaged_task<void()> lambda([=]
+                                      { set_bloom(viewer, strength); });
+    auto fut = _rl->add_task(lambda);
+  }
+  EMSCRIPTEN_KEEPALIVE void load_skybox_render_thread(TViewer *viewer,
+                                                      const char *skyboxPath,
+                                                      void (*onComplete)())
+  {
+    std::packaged_task<void()> lambda([=]
+                                      {
+                                        load_skybox(viewer, skyboxPath);
+#ifdef __EMSCRIPTEN__
+                                        MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, onComplete);
+#else
+                                        onComplete();
+#endif
+                                      });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void load_ibl_render_thread(TViewer *viewer, const char *iblPath,
+                                                   float intensity)
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        { load_ibl(viewer, iblPath, intensity); });
+    auto fut = _rl->add_task(lambda);
+  }
+  EMSCRIPTEN_KEEPALIVE void remove_skybox_render_thread(TViewer *viewer)
+  {
+    std::packaged_task<void()> lambda([=]
+                                      { remove_skybox(viewer); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void remove_ibl_render_thread(TViewer *viewer)
+  {
+    std::packaged_task<void()> lambda([=]
+                                      { remove_ibl(viewer); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  void add_light_render_thread(
+      TViewer *viewer,
+      uint8_t type,
+      float colour,
+      float intensity,
+      float posX,
+      float posY,
+      float posZ,
+      float dirX,
+      float dirY,
+      float dirZ,
+      float falloffRadius,
+      float spotLightConeInner,
+      float spotLightConeOuter,
+      float sunAngularRadius,
+      float sunHaloSize,
+      float sunHaloFallof,
+      bool shadows,
+      void (*callback)(EntityId))
+  {
+    std::packaged_task<EntityId()> lambda([=]
+                                          {
+    auto entity = add_light(
+      viewer, 
+      type,
+      colour,
+      intensity,
+      posX,
+      posY,
+      posZ,
+      dirX,
+      dirY,
+      dirZ,
+      falloffRadius,
+      spotLightConeInner,
+      spotLightConeOuter,
+      sunAngularRadius, 
+      sunHaloSize,
+      sunHaloFallof,
+      shadows);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({
+            moduleArg.dartFilamentResolveCallback($0, $1);
+          }, callback, entity);
+#else
+      callback(entity);
+#endif
+    
+    return entity; });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void remove_light_render_thread(TViewer *viewer,
+                                                       EntityId entityId)
+  {
+    std::packaged_task<void()> lambda([=]
+                                      { remove_light(viewer, entityId); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void clear_lights_render_thread(TViewer *viewer)
+  {
+    std::packaged_task<void()> lambda([=]
+                                      { clear_lights(viewer); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void remove_entity_render_thread(TViewer *viewer,
+                                                        EntityId asset, void (*callback)())
+  {
+    std::packaged_task<void()> lambda([=]
+                                      {
+                                        remove_entity(viewer, asset);
+#ifdef __EMSCRIPTEN__
+                                        MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, callback);
+#else
+                                        callback();
+#endif
+                                      });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void clear_entities_render_thread(TViewer *viewer, void (*callback)())
+  {
+    std::packaged_task<void()> lambda([=]
+                                      {
+                                        clear_entities(viewer);
+#ifdef __EMSCRIPTEN__
+                                        MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, callback);
+#else
+                                        callback();
+#endif
+                                      });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void set_camera_render_thread(TViewer *viewer, EntityId asset,
+                                                     const char *nodeName, void (*callback)(bool))
+  {
+    std::packaged_task<bool()> lambda(
+        [=]
+        {
+          auto success = set_camera(viewer, asset, nodeName);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, success);
+#else
+          callback(success);
+#endif
+          return success;
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void
+  get_morph_target_name_render_thread(void *sceneManager, EntityId assetEntity,
+                                      EntityId childEntity, char *const outPtr, int index, void (*callback)())
+  {
+    std::packaged_task<void()> lambda([=]
+                                      {
+                                        get_morph_target_name(sceneManager, assetEntity, childEntity, outPtr, index);
+#ifdef __EMSCRIPTEN__
+                                        MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, callback);
+#else
+                                        callback();
+#endif
+                                      });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void
+  get_morph_target_name_count_render_thread(void *sceneManager, EntityId assetEntity,
+                                            EntityId childEntity, void (*callback)(int))
+  {
+    std::packaged_task<int()> lambda([=]
+                                     {
+    auto count = get_morph_target_name_count(sceneManager, assetEntity, childEntity);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({
+            moduleArg.dartFilamentResolveCallback($0,$1);
+          }, callback, count);
+#else
+    callback(count);
+#endif
+    return count; });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void set_animation_frame_render_thread(void *const sceneManager,
+                                                              EntityId asset,
+                                                              int animationIndex,
+                                                              int animationFrame)
+  {
+    std::packaged_task<void()> lambda([=]
+                                      { set_animation_frame(sceneManager, asset, animationIndex, animationFrame); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void stop_animation_render_thread(void *const sceneManager,
+                                                         EntityId asset, int index)
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        { stop_animation(sceneManager, asset, index); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void get_animation_count_render_thread(void *const sceneManager,
+                                                              EntityId asset,
+                                                              void (*callback)(int))
+  {
+    std::packaged_task<int()> lambda(
+        [=]
+        {
+          auto count = get_animation_count(sceneManager, asset);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, count);
+#else
+          callback(count);
+#endif
+          return count;
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void get_animation_name_render_thread(void *const sceneManager,
+                                                             EntityId asset,
+                                                             char *const outPtr,
+                                                             int index,
+                                                             void (*callback)())
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        {
+          get_animation_name(sceneManager, asset, outPtr, index);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, callback);
+#else
+          callback();
+#endif
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void set_post_processing_render_thread(TViewer *viewer,
+                                                              bool enabled)
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        { set_post_processing(viewer, enabled); });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void
+  get_name_for_entity_render_thread(void *const sceneManager, const EntityId entityId, void (*callback)(const char *))
+  {
+    std::packaged_task<const char *()> lambda(
+        [=]
+        {
+          auto name = get_name_for_entity(sceneManager, entityId);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, name);
+#else
+          callback(name);
+#endif
+          return name;
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  void set_morph_target_weights_render_thread(void *const sceneManager,
+                                              EntityId asset,
+                                              const float *const morphData,
+                                              int numWeights,
+                                              void (*callback)(bool))
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        {
+          auto result = set_morph_target_weights(sceneManager, asset, morphData, numWeights);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, result);
+#else
+          callback(result);
+#endif
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void set_bone_transform_render_thread(
+      void *sceneManager,
+      EntityId asset,
+      int skinIndex,
+      int boneIndex,
+      const float *const transform,
+      void (*callback)(bool))
+  {
+    std::packaged_task<bool()> lambda(
+        [=]
+        {
+          auto success = set_bone_transform(sceneManager, asset, skinIndex, boneIndex, transform);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, success);
+#else
+          callback(success);
+#endif
+          return success;
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void update_bone_matrices_render_thread(void *sceneManager,
+                                                               EntityId entity, void (*callback)(bool))
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        {
+          auto success = update_bone_matrices(sceneManager, entity);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, callback, success);
+#else
+          callback(success);
+#endif
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void reset_to_rest_pose_render_thread(void *const sceneManager, EntityId entityId, void (*callback)())
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        {
+          reset_to_rest_pose(sceneManager, entityId);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0); }, callback);
+#else
+          callback();
+#endif
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void create_geometry_render_thread(
+      void *const sceneManager,
+      float *vertices,
+      int numVertices,
+      float *normals,
+      int numNormals,
+      float *uvs,
+      int numUvs,
+      uint16_t *indices,
+      int numIndices,
+      int primitiveType,
+      TMaterialInstance *materialInstance,
+      bool keepData,
+      void (*callback)(EntityId))
+  {
+    std::packaged_task<EntityId()> lambda(
+        [=]
+        {
+          auto entity = create_geometry(sceneManager, vertices, numVertices, normals, numNormals, uvs, numUvs, indices, numIndices, primitiveType, materialInstance, keepData);
+#ifdef __EMSCRIPTEN__
+          MAIN_THREAD_EM_ASM({ moduleArg.dartFilamentResolveCallback($0, $1); }, callback, entity);
+#else
+          callback(entity);
+#endif
+          return entity;
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+
+  EMSCRIPTEN_KEEPALIVE void unproject_texture_render_thread(TViewer* viewer, EntityId entity, uint8_t *input, uint32_t inputWidth, uint32_t inputHeight, uint8_t *out, uint32_t outWidth, uint32_t outHeight, void (*callback)())
+  {
+    std::packaged_task<void()> lambda(
+        [=]
+        {
+          unproject_texture(viewer, entity, input, inputWidth, inputHeight, out, outWidth, outHeight);
+          callback();
+        });
+    auto fut = _rl->add_task(lambda);
+  }
+}

thermion_dart/native/src/UnprojectTexture.cpp

@@ -0,0 +1,211 @@
+#include <filament/Engine.h>
+#include <filament/Camera.h>
+#include <filament/Texture.h>
+#include <filament/VertexBuffer.h>
+#include <filament/IndexBuffer.h>
+#include <filament/RenderableManager.h>
+#include <filament/TransformManager.h>
+#include <math/mat4.h>
+#include <math/vec2.h>
+#include <math/vec3.h>
+#include <math/vec4.h>
+#include <utils/EntityManager.h>
+#include <backend/PixelBufferDescriptor.h>
+#include "Log.hpp"
+#include <vector>
+#include <algorithm>
+
+#include <iostream>
+
+#include "CustomGeometry.hpp"
+#include "UnprojectTexture.hpp"
+
+namespace thermion_filament
+{
+
+    bool UnprojectTexture::isInsideTriangle(const math::float2 &p, const math::float2 &a, const math::float2 &b, const math::float2 &c)
+    {
+        float d1 = (p.x - b.x) * (a.y - b.y) - (a.x - b.x) * (p.y - b.y);
+        float d2 = (p.x - c.x) * (b.y - c.y) - (b.x - c.x) * (p.y - c.y);
+        float d3 = (p.x - a.x) * (c.y - a.y) - (c.x - a.x) * (p.y - a.y);
+        return (d1 >= 0 && d2 >= 0 && d3 >= 0) || (d1 <= 0 && d2 <= 0 && d3 <= 0);
+    }
+
+    math::float3 UnprojectTexture::barycentric(const math::float2 &p, const math::float2 &a, const math::float2 &b, const math::float2 &c)
+    {
+        math::float2 v0 = b - a;
+        math::float2 v1 = c - a;
+        math::float2 v2 = p - a;
+
+        float d00 = dot(v0, v0);
+        float d01 = dot(v0, v1);
+        float d11 = dot(v1, v1);
+        float d20 = dot(v2, v0);
+        float d21 = dot(v2, v1);
+
+        float denom = d00 * d11 - d01 * d01;
+
+        float v = (d11 * d20 - d01 * d21) / denom;
+        float w = (d00 * d21 - d01 * d20) / denom;
+        float u = 1.0f - v - w;
+
+        return math::float3(u, v, w);
+    }
+
+    void UnprojectTexture::unproject(utils::Entity entity, const uint8_t *inputTexture, uint8_t *outputTexture,
+                                     uint32_t inputWidth, uint32_t inputHeight,
+                                     uint32_t outputWidth, uint32_t outputHeight)
+    {
+
+        auto &rm = _engine->getRenderableManager();
+
+        auto &tm = _engine->getTransformManager();
+
+        math::mat4 invViewProj = Camera::inverseProjection(_camera.getProjectionMatrix()) * _camera.getModelMatrix();
+
+        auto ti = tm.getInstance(entity);
+        math::mat4f worldTransform = tm.getWorldTransform(ti);
+        auto inverseWorldTransform = inverse(worldTransform);
+
+        const float *vertices = _geometry->vertices;
+        const float *uvs = _geometry->uvs;
+        const uint16_t *indices = _geometry->indices;
+        uint32_t numIndices = _geometry->numIndices;
+
+        // Create a depth buffer
+        std::vector<float> depthBuffer(inputWidth * inputHeight, std::numeric_limits<float>::infinity());
+
+        // Create a buffer to store the triangle index for each pixel
+        std::vector<int> triangleIndexBuffer(inputWidth * inputHeight, -1);
+
+        auto max = 0.0f;
+        auto min = 99.0f;
+
+        // Depth pre-pass
+        for (size_t i = 0; i < numIndices; i += 3)
+        {
+            math::float3 v0(vertices[indices[i] * 3], vertices[indices[i] * 3 + 1], vertices[indices[i] * 3 + 2]);
+            math::float3 v1(vertices[indices[i + 1] * 3], vertices[indices[i + 1] * 3 + 1], vertices[indices[i + 1] * 3 + 2]);
+            math::float3 v2(vertices[indices[i + 2] * 3], vertices[indices[i + 2] * 3 + 1], vertices[indices[i + 2] * 3 + 2]);
+
+            math::float2 uv0(uvs[(indices[i] * 2)], uvs[(indices[i] * 2) + 1]);
+            math::float2 uv1(uvs[(indices[i + 1] * 2)], uvs[(indices[i + 1] * 2) + 1]);
+            math::float2 uv2(uvs[(indices[i + 2] * 2)], uvs[(indices[i + 2] * 2) + 1]);
+
+            // Transform vertices to world space
+            v0 = (worldTransform * math::float4(v0, 1.0f)).xyz;
+            v1 = (worldTransform * math::float4(v1, 1.0f)).xyz;
+            v2 = (worldTransform * math::float4(v2, 1.0f)).xyz;
+
+            // Project vertices to screen space
+            math::float4 clipPos0 = _camera.getProjectionMatrix() * _camera.getViewMatrix() * math::float4(v0, 1.0f);
+            math::float4 clipPos1 = _camera.getProjectionMatrix() * _camera.getViewMatrix() * math::float4(v1, 1.0f);
+            math::float4 clipPos2 = _camera.getProjectionMatrix() * _camera.getViewMatrix() * math::float4(v2, 1.0f);
+
+            math::float3 ndcPos0 = clipPos0.xyz / clipPos0.w;
+            math::float3 ndcPos1 = clipPos1.xyz / clipPos1.w;
+            math::float3 ndcPos2 = clipPos2.xyz / clipPos2.w;
+
+            // Convert NDC to screen coordinates
+            math::float2 screenPos0((ndcPos0.x * 0.5f + 0.5f) * inputWidth, (1.0f - (ndcPos0.y * 0.5f + 0.5f)) * inputHeight);
+            math::float2 screenPos1((ndcPos1.x * 0.5f + 0.5f) * inputWidth, (1.0f - (ndcPos1.y * 0.5f + 0.5f)) * inputHeight);
+            math::float2 screenPos2((ndcPos2.x * 0.5f + 0.5f) * inputWidth, (1.0f - (ndcPos2.y * 0.5f + 0.5f)) * inputHeight);
+
+            // Compute bounding box of the triangle
+            int minX = std::max(0, static_cast<int>(std::min({screenPos0.x, screenPos1.x, screenPos2.x})));
+            int maxX = std::min(static_cast<int>(inputWidth) - 1, static_cast<int>(std::max({screenPos0.x, screenPos1.x, screenPos2.x})));
+            int minY = std::max(0, static_cast<int>(std::min({screenPos0.y, screenPos1.y, screenPos2.y})));
+            int maxY = std::min(static_cast<int>(inputHeight) - 1, static_cast<int>(std::max({screenPos0.y, screenPos1.y, screenPos2.y})));
+
+            // Iterate over the bounding box
+            for (int y = minY; y <= maxY; ++y)
+            {
+                for (int x = minX; x <= maxX; ++x)
+                {
+                    math::float2 pixelPos(x + 0.5f, y + 0.5f);
+
+                    if (isInsideTriangle(pixelPos, screenPos0, screenPos1, screenPos2))
+                    {
+                        math::float3 bary = barycentric(pixelPos, screenPos0, screenPos1, screenPos2);
+
+                        // Interpolate depth
+                        float depth = bary.x * ndcPos0.z + bary.y * ndcPos1.z + bary.z * ndcPos2.z;
+
+                        // Depth test
+                        if (depth < depthBuffer[y * inputWidth + x])
+                        {
+
+                            if (depth > max)
+                            {
+                                max = depth;
+                            }
+                            if (depth < min)
+                            {
+                                min = depth;
+                            }
+                            depthBuffer[y * inputWidth + x] = depth;
+                            triangleIndexBuffer[y * inputWidth + x] = i / 3; // Store triangle index
+                        }
+                    }
+                }
+            }
+        }
+
+        for (uint32_t y = 0; y < outputHeight; ++y)
+        {
+            for (uint32_t x = 0; x < outputWidth; ++x)
+            {
+
+                math::float2 uv(static_cast<float>(x) / outputWidth, static_cast<float>(y) / outputHeight);
+
+                // Use the UV coordinates to get the corresponding 3D position on the renderable
+                math::float3 objectPos;
+                math::float2 interpolatedUV;
+                bool found = false;
+
+                // Iterate over triangles to find which one contains this UV coordinate
+                for (size_t i = 0; i < numIndices; i += 3)
+                {
+                    math::float2 uv0 = *(math::float2 *)&uvs[indices[i] * 2];
+                    math::float2 uv1 = *(math::float2 *)&uvs[indices[i + 1] * 2];
+                    math::float2 uv2 = *(math::float2 *)&uvs[indices[i + 2] * 2];
+
+                    if (isInsideTriangle(uv, uv0, uv1, uv2))
+                    {
+                        // Compute barycentric coordinates in UV space
+                        math::float3 bary = barycentric(uv, uv0, uv1, uv2);
+
+                        // Interpolate 3D position
+                        math::float3 v0(vertices[indices[i] * 3], vertices[indices[i] * 3 + 1], vertices[indices[i] * 3 + 2]);
+                        math::float3 v1(vertices[indices[i + 1] * 3], vertices[indices[i + 1] * 3 + 1], vertices[indices[i + 1] * 3 + 2]);
+                        math::float3 v2(vertices[indices[i + 2] * 3], vertices[indices[i + 2] * 3 + 1], vertices[indices[i + 2] * 3 + 2]);
+
+                        objectPos = v0 * bary.x + v1 * bary.y + v2 * bary.z;
+                        interpolatedUV = uv;
+
+                        // Find the screen coordinates on the input texture
+                        math::float3 worldPos = (worldTransform * math::float4(objectPos, 1.0f)).xyz;
+                        // Project the world position to screen space
+                        math::float4 clipPos = _camera.getProjectionMatrix() * _camera.getViewMatrix() * math::float4(worldPos, 1.0f);
+                        math::float3 ndcPos = clipPos.xyz / clipPos.w;
+                        // Convert NDC to screen coordinates
+                        uint32_t screenX = (ndcPos.x * 0.5f + 0.5f) * inputWidth;
+                        uint32_t screenY = (1.0f - (ndcPos.y * 0.5f + 0.5f)) * inputHeight;
+
+                        if (triangleIndexBuffer[(screenY * inputWidth) + screenX] == i / 3)
+                        {
+                            if (screenX >= 0 && screenX < inputWidth && screenY >= 0 && screenY < inputHeight)
+                            {
+                                int inputIndex = (screenY * inputWidth + screenX) * 4;
+                                int outputIndex = (y * outputWidth + x) * 4;
+                                std::copy_n(&inputTexture[inputIndex], 4, &outputTexture[outputIndex]);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+} // namespace thermion_filament
+

thermion_dart/native/web/CMakeLists.txt

@@ -10,7 +10,7 @@ endif(NOT CMAKE_BUILD_TYPE)
 set(MODULE_NAME "thermion_dart")
 
 set(EMCC_CFLAGS --bind)
-# set(EMCC_CFLAGS ${EMCC_CFLAGS} -sALLOW_TABLE_GROWTH=1)
+set(EMCC_CFLAGS ${EMCC_CFLAGS} -sALLOW_TABLE_GROWTH=1)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sALLOW_MEMORY_GROWTH=1)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sEXPORT_NAME=${MODULE_NAME})
 # set(EMCC_CFLAGS ${EMCC_CFLAGS} -sEXPORT_ALL=1)
@@ -19,7 +19,7 @@ set(EMCC_CFLAGS ${EMCC_CFLAGS} -sEXPORT_NAME=${MODULE_NAME})
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sINITIAL_MEMORY=512mb)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sMODULARIZE)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sERROR_ON_UNDEFINED_SYMBOLS=0 )
-set(EMCC_CFLAGS ${EMCC_CFLAGS} -sEXPORTED_RUNTIME_METHODS=wasmExports,wasmTable,addFunction,ccall,cwrap,allocate,intArrayFromString,intArrayToString,getValue,setValue,UTF8ToString,stringToUTF8,writeArrayToMemory)
+set(EMCC_CFLAGS ${EMCC_CFLAGS} -sEXPORTED_RUNTIME_METHODS=wasmExports,wasmTable,addFunction,removeFunction,ccall,cwrap,allocate,intArrayFromString,intArrayToString,getValue,setValue,UTF8ToString,stringToUTF8,writeArrayToMemory)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sEXPORTED_FUNCTIONS=_malloc,stackAlloc,_free)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sFULL_ES3)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sASSERTIONS)
@@ -27,7 +27,7 @@ set(EMCC_CFLAGS ${EMCC_CFLAGS} -sASSERTIONS)
 # set(EMCC_CFLAGS ${EMCC_CFLAGS} -sALLOW_BLOCKING_ON_MAIN_THREAD=0)
 # set(EMCC_CFLAGS ${EMCC_CFLAGS} -sOFFSCREEN_FRAMEBUFFER=1)
 # set(EMCC_CFLAGS ${EMCC_CFLAGS} -sOFFSCREENCANVAS_SUPPORT=1)
-# set(EMCC_CFLAGS ${EMCC_CFLAGS} -sNO_DISABLE_EXCEPTION_CATCHING)
+set(EMCC_CFLAGS ${EMCC_CFLAGS} -sNO_DISABLE_EXCEPTION_CATCHING)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sASYNCIFY=1)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sMIN_WEBGL_VERSION=2)
 set(EMCC_CFLAGS ${EMCC_CFLAGS} -sMAX_WEBGL_VERSION=2)
@@ -55,6 +55,8 @@ add_executable(${MODULE_NAME}
   "${CMAKE_CURRENT_SOURCE_DIR}/../src/FilamentViewer.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/../src/ThermionDartApi.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/../src/ThermionDartFFIApi.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../src/Gizmo.cpp"
+  "${CMAKE_CURRENT_SOURCE_DIR}/../src/GridOverlay.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/../src/StreamBufferAdapter.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/../src/TimeIt.cpp"
   "${CMAKE_CURRENT_SOURCE_DIR}/../src/camutils/Manipulator.cpp"

thermion_dart/pubspec.yaml

@@ -1,11 +1,11 @@
 name: thermion_dart
 description: 3D rendering toolkit for Dart.
-version: 0.1.3
+version: 0.2.0-dev.1.0
 homepage: https://thermion.dev
 repository: https://github.com/nmfisher/thermion
 
 environment:
-  sdk: ">=3.3.0 <4.0.0"
+  sdk: ">=3.5.0 <4.0.0"
 
 dependencies:
   vector_math: ^2.1.2
@@ -14,9 +14,12 @@ dependencies:
   animation_tools_dart: ^0.0.4
   native_toolchain_c: ^0.4.2
   archive: ^3.6.1
-  web: ^0.5.1
+  web: ^1.0.0
   logging: ^1.2.0
+  http: ^1.2.2
 
 dev_dependencies:
   ffigen: ^12.0.0
   test:
+  image:
+  path: