Files
cup_edit/thermion_dart/test/integration_test.dart
2024-09-28 11:19:06 +08:00

793 lines
31 KiB
Dart

import 'dart:async';
import 'dart:io';
import 'dart:math';
import 'package:thermion_dart/src/viewer/src/events.dart';
import 'package:thermion_dart/src/viewer/src/ffi/src/thermion_viewer_ffi.dart';
import 'package:thermion_dart/thermion_dart.dart';
import 'package:test/test.dart';
import 'package:vector_math/vector_math_64.dart';
import 'helpers.dart';
void main() async {
final testHelper = TestHelper("integration");
group('background', () {
test('set background color to solid green', () async {
var viewer = await testHelper.createViewer();
await viewer.setBackgroundColor(0.0, 1.0, 0.0, 1.0);
await testHelper.capture(viewer, "set_background_color_to_solid_green");
await viewer.dispose();
});
test('set background color to full transparency', () async {
var viewer = await testHelper.createViewer();
await viewer.setBackgroundColor(0.0, 1.0, 0.0, 0.0);
await testHelper.capture(
viewer, "set_background_color_to_transparent_green");
await viewer.dispose();
});
test('set background image', () async {
var viewer = await testHelper.createViewer();
await viewer.setBackgroundImage(
"file:///${testHelper.testDir}/assets/cube_texture_512x512.png");
await viewer.setPostProcessing(true);
await viewer.setToneMapping(ToneMapper.LINEAR);
await testHelper.capture(viewer, "set_background_image");
await viewer.dispose();
});
});
group("scene update events", () {
test('add light fires SceneUpdateEvent', () async {
var viewer = await testHelper.createViewer();
final success = Completer<bool>();
var light = DirectLight(
type: LightType.POINT,
color: 6500,
intensity: 1000000,
position: Vector3(0, 0.6, 0.6),
direction: Vector3(0, 0, 0),
falloffRadius: 2.0);
late StreamSubscription listener;
listener = viewer.sceneUpdated.listen((updateEvent) {
var wasSuccess = updateEvent.eventType == EventType.EntityAdded &&
updateEvent.addedEntityType == EntityType.DirectLight &&
updateEvent.getDirectLight() == light;
success.complete(wasSuccess);
listener.cancel();
});
await viewer.addDirectLight(light);
expect(await success.future, true);
});
test('remove light fires SceneUpdateEvent', () async {
var viewer = await testHelper.createViewer();
final success = Completer<bool>();
var light = await viewer.addDirectLight(DirectLight.point());
late StreamSubscription listener;
listener = viewer.sceneUpdated.listen((updateEvent) {
var wasSuccess = updateEvent.eventType == EventType.EntityRemoved &&
updateEvent.entity == light;
success.complete(wasSuccess);
listener.cancel();
});
await viewer.removeLight(light);
expect(await success.future, true);
});
test('add geometry fires SceneUpdateEvent', () async {
var viewer = await testHelper.createViewer();
final success = Completer<bool>();
var geometry = GeometryHelper.cube();
late StreamSubscription listener;
listener = viewer.sceneUpdated.listen((updateEvent) {
var wasSuccess = updateEvent.eventType == EventType.EntityAdded &&
updateEvent.addedEntityType == EntityType.Geometry &&
updateEvent.getAsGeometry() == geometry;
success.complete(wasSuccess);
listener.cancel();
});
await viewer.createGeometry(geometry);
expect(await success.future, true);
});
test('remove geometry fires SceneUpdateEvent', () async {
var viewer = await testHelper.createViewer();
var geometry = await viewer.createGeometry(GeometryHelper.cube());
final success = Completer<bool>();
late StreamSubscription listener;
listener = viewer.sceneUpdated.listen((updateEvent) {
var wasSuccess = updateEvent.eventType == EventType.EntityRemoved &&
updateEvent.entity == geometry;
success.complete(wasSuccess);
listener.cancel();
});
await viewer.removeEntity(geometry);
expect(await success.future, true);
});
test('loadGlb fires SceneUpdateEvent', () async {
var viewer = await testHelper.createViewer();
final success = Completer<bool>();
late StreamSubscription listener;
final uri = "${testHelper.testDir}/cube.glb";
listener = viewer.sceneUpdated.listen((updateEvent) {
var wasSuccess = updateEvent.eventType == EventType.EntityAdded &&
updateEvent.addedEntityType == EntityType.Gltf &&
updateEvent.getAsGLTF().uri == uri;
success.complete(wasSuccess);
listener.cancel();
});
await viewer.loadGlb(uri, keepData: false);
expect(await success.future, true);
});
test('remove glb fires SceneUpdateEvent', () async {
var viewer = await testHelper.createViewer();
final uri = "${testHelper.testDir}/cube.glb";
var entity = await viewer.loadGlb(uri, keepData: false);
final success = Completer<bool>();
late StreamSubscription listener;
listener = viewer.sceneUpdated.listen((updateEvent) {
var wasSuccess = updateEvent.eventType == EventType.EntityRemoved &&
updateEvent.entity == entity;
success.complete(wasSuccess);
listener.cancel();
});
await viewer.removeEntity(entity);
expect(await success.future, true);
});
});
group("MaterialInstance", () {
test('disable depth write', () async {
var viewer = await testHelper.createViewer();
await viewer.setBackgroundColor(1.0, 0.0, 0.0, 1.0);
await viewer.setCameraPosition(0, 0, 6);
await viewer.addDirectLight(
DirectLight.sun(direction: Vector3(0, 0, -1)..normalize()));
final cube1 = await viewer.createGeometry(GeometryHelper.cube());
var materialInstance = await viewer.getMaterialInstanceAt(cube1, 0);
final cube2 = await viewer.createGeometry(GeometryHelper.cube());
await viewer.setMaterialPropertyFloat4(
cube2, "baseColorFactor", 0, 0, 1, 0, 1);
await viewer.setPosition(cube2, 1.0, 0.0, -1.0);
expect(materialInstance, isNotNull);
// with depth write enabled on both materials, cube2 renders behind the white cube
await testHelper.capture(viewer, "material_instance_depth_write_enabled");
// if we disable depth write on cube1, then cube2 will always appear in front
// (relying on insertion order)
materialInstance!.setDepthWriteEnabled(false);
await testHelper.capture(
viewer, "material_instance_depth_write_disabled");
// set priority for the cube1 cube to 7 (render) last, cube1 renders in front
await viewer.setPriority(cube1, 7);
await testHelper.capture(
viewer, "material_instance_depth_write_disabled_with_priority");
});
});
// test('create instance from glb when keepData is true', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/cube.glb", keepData: true);
// await viewer.transformToUnitCube(model);
// var instance = await viewer.createInstance(model);
// await viewer.setPosition(instance, 0.5, 0.5, -0.5);
// await viewer.setBackgroundColor(0.0, 0.0, 1.0, 1.0);
// await viewer.setCameraPosition(0, 1, 5);
// await viewer
// .setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
// await viewer.setRendering(true);
// await testHelper.capture(viewer, "glb_create_instance");
// await viewer.setRendering(false);
// });
// test('create instance from glb fails when keepData is false', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/cube.glb", keepData: false);
// bool thrown = false;
// try {
// await viewer.createInstance(model);
// } catch (err) {
// thrown = true;
// }
// expect(thrown, true);
// });
// });
// group('Skinning & animations', () {
// test('get bone names', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/assets/shapes.glb");
// var names = await viewer.getBoneNames(model);
// expect(names.first, "Bone");
// });
// test('reset bones', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/assets/shapes.glb");
// await viewer.resetBones(model);
// });
// test('set from BVH', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/assets/shapes.glb");
// var animation = BVHParser.parse(
// File("${testHelper.testDir}/assets/animation.bvh").readAsStringSync(),
// boneRegex: RegExp(r"Bone$"));
// await viewer.addBoneAnimation(model, animation);
// });
// test('fade in/out', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/assets/shapes.glb");
// var animation = BVHParser.parse(
// File("${testHelper.testDir}/assets/animation.bvh").readAsStringSync(),
// boneRegex: RegExp(r"Bone$"));
// await viewer.addBoneAnimation(model, animation,
// fadeInInSecs: 0.5, fadeOutInSecs: 0.5);
// await Future.delayed(Duration(seconds: 1));
// });
group("materials", () {
test('set float4 material property for custom geometry', () async {
var viewer = await testHelper.createViewer();
await viewer.setCameraPosition(0, 0, 6);
await viewer.setBackgroundColor(0.0, 0.0, 1.0, 1.0);
var light = await viewer.addLight(
LightType.SUN, 6500, 1000000, 0, 0, 0, 0, 0, -1);
final cube = await viewer.createGeometry(GeometryHelper.cube());
await testHelper.capture(viewer, "set_material_float4_pre");
await viewer.setMaterialPropertyFloat4(
cube, "baseColorFactor", 0, 0.0, 1.0, 0.0, 1.0);
await testHelper.capture(viewer, "set_material_float4_post");
});
test('set float material property for custom geometry', () async {
var viewer = await testHelper.createViewer();
await viewer.setCameraPosition(0, 0, 6);
await viewer.setBackgroundColor(0.0, 0.0, 1.0, 1.0);
var light = await viewer.addLight(
LightType.SUN, 6500, 1000000, 0, 0, 0, 0, 0, -1);
final cube = await viewer.createGeometry(GeometryHelper.cube());
// this won't actually do anything because the default ubershader doesn't use specular/glossiness
// but we can at least check that the call succeeds
await testHelper.capture(viewer, "set_material_specular_pre");
await viewer.setMaterialPropertyFloat(cube, "specularFactor", 0, 0.0);
await testHelper.capture(viewer, "set_material_specular_post");
});
test('set float material property (roughness) for custom geometry',
() async {
var viewer = await testHelper.createViewer();
await viewer.setCameraPosition(0, 0, 6);
await viewer.setBackgroundColor(0.0, 0.0, 1.0, 1.0);
var light = await viewer.addLight(
LightType.SUN, 6500, 1000000, 0, 0, 0, 0, 0, -1);
final cube = await viewer.createGeometry(GeometryHelper.cube());
// this won't actually do anything because the default ubershader doesn't use specular/glossiness
// but we can at least check that the call succeeds
await testHelper.capture(viewer, "set_material_roughness_pre");
await viewer.setMaterialPropertyFloat(cube, "metallicFactor", 0, 0.0);
await viewer.setMaterialPropertyFloat(cube, "roughnessFactor", 0, 0.0);
await testHelper.capture(viewer, "set_material_roughness_post");
});
});
group("transforms & parenting", () {
test('set multiple transforms simultaneously with setTransforms', () async {
var viewer =
await testHelper.createViewer(bg: kRed, cameraPosition: Vector3(0, 0, 5));
final cube1 = await viewer.createGeometry(GeometryHelper.cube());
final cube2 = await viewer.createGeometry(GeometryHelper.cube());
await viewer.queueTransformUpdates([
cube1,
cube2
], [
Matrix4.translation(Vector3(-1, 0, 0)),
Matrix4.translation(Vector3(1, 0, 0))
]);
await viewer.render(testHelper.swapChain);
await testHelper.capture(viewer, "set_multiple_transforms");
});
test('getParent and getAncestor both return null when entity has no parent',
() async {
var viewer = await testHelper.createViewer();
final cube = await viewer.createGeometry(GeometryHelper.cube());
expect(await viewer.getParent(cube), isNull);
expect(await viewer.getAncestor(cube), isNull);
});
test(
'getParent returns the parent entity after one has been set via setParent',
() async {
var viewer = await testHelper.createViewer();
final cube1 = await viewer.createGeometry(GeometryHelper.cube());
final cube2 = await viewer.createGeometry(GeometryHelper.cube());
await viewer.setParent(cube1, cube2);
final parent = await viewer.getParent(cube1);
expect(parent, cube2);
});
test('getAncestor returns the ultimate parent entity', () async {
var viewer = await testHelper.createViewer();
final grandparent = await viewer.createGeometry(GeometryHelper.cube());
final parent = await viewer.createGeometry(GeometryHelper.cube());
final child = await viewer.createGeometry(GeometryHelper.cube());
await viewer.setParent(child, parent);
await viewer.setParent(parent, grandparent);
expect(await viewer.getAncestor(child), grandparent);
});
test('set position based on screenspace coord', () async {
var viewer = await testHelper.createViewer();
print(await viewer.getCameraFov(true));
await viewer.createIbl(1.0, 1.0, 1.0, 1000);
await viewer.setCameraPosition(0, 0, 6);
await viewer.setBackgroundColor(0.0, 0.0, 1.0, 1.0);
// Create the cube geometry
final cube = await viewer.createGeometry(GeometryHelper.cube());
// await viewer.setPosition(cube, -0.05, 0.04, 5.9);
// await viewer.setPosition(cube, -2.54, 2.54, 0);
await viewer.queuePositionUpdateFromViewportCoords(cube, 0, 0);
// we need an explicit render call here to process the transform queue
await viewer.render(testHelper.swapChain);
await testHelper.capture(viewer, "set_position_from_viewport_coords");
});
});
group("layers & overlays", () {
test('enable grid overlay', () async {
var viewer = await testHelper.createViewer();
await viewer.setBackgroundColor(0, 0, 0, 1);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -pi / 8));
await viewer.setCameraPosition(0, 2, 0);
await testHelper.capture(viewer, "grid_overlay_default");
await viewer.setLayerVisibility(7, true);
await testHelper.capture(viewer, "grid_overlay_enabled");
await viewer.setLayerVisibility(7, false);
await testHelper.capture(viewer, "grid_overlay_disabled");
});
test('load glb from buffer with layer', () async {
var viewer = await testHelper.createViewer();
await viewer.setBackgroundColor(1, 0, 1, 1);
await viewer.setCameraPosition(0, 2, 5);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
var buffer = File("${testHelper.testDir}/cube.glb").readAsBytesSync();
var model = await viewer.loadGlbFromBuffer(buffer, layer: 1);
await testHelper.capture(
viewer, "load_glb_from_buffer_with_layer_disabled");
await viewer.setLayerVisibility(1, true);
await testHelper.capture(
viewer, "load_glb_from_buffer_with_layer_enabled");
});
test('change layer visibility at runtime', () async {
var viewer = await testHelper.createViewer();
await viewer.setBackgroundColor(1, 0, 1, 1);
await viewer.setCameraPosition(0, 2, 5);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
var cube = await viewer.createGeometry(GeometryHelper.cube());
await testHelper.capture(
viewer, "change_layer_visibility_at_runtime_default");
// all entities set to layer 0 by default, so this should now be invisible
await viewer.setLayerVisibility(0, false);
await testHelper.capture(
viewer, "change_layer_visibility_at_runtime_layer0_invisible");
// now change the visibility layer to 5, should be invisible
await viewer.setVisibilityLayer(cube, 5);
await testHelper.capture(
viewer, "change_layer_visibility_at_runtime_layer5_invisible");
// now toggle layer 5 visibility, cube should now be visible
await viewer.setLayerVisibility(5, true);
await testHelper.capture(
viewer, "change_layer_visibility_at_runtime_layer5_visible");
});
});
// test('point light', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/cube.glb");
// await viewer.transformToUnitCube(model);
// var light = await viewer.addLight(
// LightType.POINT, 6500, 1000000, 0, 2, 0, 0, -1, 0,
// falloffRadius: 10.0);
// await viewer.setBackgroundColor(0.0, 0.0, 0.0, 1.0);
// await viewer.setCameraPosition(0, 1, 5);
// await viewer
// .setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
// await viewer.setRendering(true);
// await testHelper.capture(viewer, "point_light");
// await viewer.setRendering(false);
// });
// test('set point light position', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/cube.glb");
// await viewer.transformToUnitCube(model);
// var light = await viewer.addLight(
// LightType.POINT, 6500, 1000000, 0, 2, 0, 0, -1, 0,
// falloffRadius: 10.0);
// await viewer.setLightPosition(light, 0.5, 2, 0);
// await viewer.setBackgroundColor(0.0, 0.0, 0.0, 1.0);
// await viewer.setCameraPosition(0, 1, 5);
// await viewer
// .setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
// await viewer.setRendering(true);
// await testHelper.capture(viewer, "move_point_light");
// await viewer.setRendering(false);
// });
// test('directional light', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/cube.glb");
// await viewer.transformToUnitCube(model);
// var light = await viewer.addLight(
// LightType.SUN, 6500, 1000000, 0, 0, 0, 0, -1, 0);
// await viewer.setBackgroundColor(0.0, 0.0, 0.0, 1.0);
// await viewer.setCameraPosition(0, 1, 5);
// await viewer
// .setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
// await viewer.setRendering(true);
// await testHelper.capture(viewer, "directional_light");
// await viewer.setRendering(false);
// });
// test('set directional light direction', () async {
// var model = await viewer.loadGlb("${testHelper.testDir}/cube.glb");
// await viewer.transformToUnitCube(model);
// var light = await viewer.addLight(
// LightType.SUN, 6500, 1000000, 0, 0, 0, 0, -1, 0);
// await viewer.setLightDirection(light, Vector3(-1, -1, -1));
// await viewer.setBackgroundColor(0.0, 0.0, 0.0, 1.0);
// await viewer.setCameraPosition(0, 1, 5);
// await viewer
// .setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
// await viewer.setRendering(true);
// await testHelper.capture(viewer, "set_directional_light_direction");
// await viewer.setRendering(false);
// });
group("stencil", () {
test('set stencil highlight for glb', () async {
final viewer = await testHelper.createViewer();
var model = await viewer.loadGlb("${testHelper.testDir}/cube.glb", keepData: true);
await viewer.setPostProcessing(true);
var light = await viewer.addLight(
LightType.SUN, 6500, 1000000, 0, 0, 0, 0, -1, 0);
await viewer.setLightDirection(light, Vector3(0, 1, -1));
await viewer.setBackgroundColor(0.0, 1.0, 0.0, 1.0);
await viewer.setCameraPosition(0, -1, 5);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), pi / 8));
await viewer.setStencilHighlight(model);
await testHelper.capture(viewer, "stencil_highlight_glb");
});
test('set stencil highlight for geometry', () async {
var viewer = await testHelper.createViewer();
await viewer.setPostProcessing(true);
await viewer.setBackgroundColor(0.0, 1.0, 0.0, 1.0);
await viewer.setCameraPosition(0, 2, 5);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
var cube = await viewer.createGeometry(GeometryHelper.cube());
await viewer.setStencilHighlight(cube);
await testHelper.capture(viewer, "stencil_highlight_geometry");
await viewer.removeStencilHighlight(cube);
await testHelper.capture(viewer, "stencil_highlight_geometry_remove");
});
test('set stencil highlight for gltf asset', () async {
var viewer = await testHelper.createViewer();
await viewer.setPostProcessing(true);
await viewer.setBackgroundColor(0.0, 1.0, 0.0, 1.0);
await viewer.setCameraPosition(0, 1, 5);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
var cube1 = await viewer.loadGlb("${testHelper.testDir}/cube.glb", keepData: true);
await viewer.transformToUnitCube(cube1);
await viewer.setStencilHighlight(cube1);
await testHelper.capture(viewer, "stencil_highlight_gltf");
await viewer.removeStencilHighlight(cube1);
await testHelper.capture(viewer, "stencil_highlight_gltf_removed");
});
test('set stencil highlight for multiple geometry ', () async {
var viewer = await testHelper.createViewer();
await viewer.setPostProcessing(true);
await viewer.setBackgroundColor(0.0, 1.0, 0.0, 1.0);
await viewer.setCameraPosition(0, 1, 5);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
var cube1 = await viewer.createGeometry(GeometryHelper.cube());
var cube2 = await viewer.createGeometry(GeometryHelper.cube());
await viewer.setPosition(cube2, 0.5, 0.5, 0);
await viewer.setStencilHighlight(cube1);
await viewer.setStencilHighlight(cube2, r: 0.0, g: 0.0, b: 1.0);
await testHelper.capture(viewer, "stencil_highlight_multiple_geometry");
await viewer.removeStencilHighlight(cube1);
await viewer.removeStencilHighlight(cube2);
await testHelper.capture(
viewer, "stencil_highlight_multiple_geometry_removed");
});
test('set stencil highlight for multiple gltf assets ', () async {
var viewer = await testHelper.createViewer();
await viewer.setPostProcessing(true);
await viewer.setBackgroundColor(0.0, 1.0, 0.0, 1.0);
await viewer.setCameraPosition(0, 1, 5);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -0.5));
var cube1 = await viewer.loadGlb("${testHelper.testDir}/cube.glb", keepData: true);
await viewer.transformToUnitCube(cube1);
var cube2 = await viewer.loadGlb("${testHelper.testDir}/cube.glb", keepData: true);
await viewer.transformToUnitCube(cube2);
await viewer.setPosition(cube2, 0.5, 0.5, 0);
await viewer.setStencilHighlight(cube1);
await viewer.setStencilHighlight(cube2, r: 0.0, g: 0.0, b: 1.0);
await testHelper.capture(viewer, "stencil_highlight_multiple_geometry");
await viewer.removeStencilHighlight(cube1);
await viewer.removeStencilHighlight(cube2);
await testHelper.capture(
viewer, "stencil_highlight_multiple_geometry_removed");
});
});
group("texture", () {
test("create/apply/dispose texture", () async {
var viewer = await testHelper.createViewer();
var textureData =
File("${testHelper.testDir}/assets/cube_texture_512x512.png").readAsBytesSync();
var texture = await viewer.createTexture(textureData);
await viewer.setBackgroundColor(0.0, 0.0, 0.0, 1.0);
await viewer.addDirectLight(
DirectLight.sun(direction: Vector3(0, -10, -1)..normalize()));
await viewer.addDirectLight(DirectLight.spot(
intensity: 1000000,
position: Vector3(0, 0, 1.5),
direction: Vector3(0, 0, -1)..normalize(),
falloffRadius: 10,
spotLightConeInner: 1,
spotLightConeOuter: 1));
await viewer.setCameraPosition(0, 2, 6);
await viewer
.setCameraRotation(Quaternion.axisAngle(Vector3(1, 0, 0), -pi / 8));
var materialInstance =
await viewer.createUbershaderMaterialInstance(unlit: true);
var cube = await viewer.createGeometry(GeometryHelper.cube(),
materialInstance: materialInstance);
await viewer.setPostProcessing(true);
await viewer.setToneMapping(ToneMapper.LINEAR);
await viewer.applyTexture(texture, cube,
materialIndex: 0, parameterName: "baseColorMap");
await testHelper.capture(viewer, "texture_applied_to_geometry");
await viewer.removeEntity(cube);
await viewer.destroyTexture(texture);
});
});
group("render thread", () {
test("request frame on render thread", () async {
var viewer = await testHelper.createViewer();
viewer.requestFrame();
await Future.delayed(Duration(milliseconds: 20));
await viewer.dispose();
});
});
// group("unproject", () {
// test("unproject", () async {
// final dimensions = (width: 1280, height: 768);
// var viewer = await testHelper.createViewer(viewportDimensions: dimensions);
// await viewer.setPostProcessing(false);
// // await viewer.setToneMapping(ToneMapper.LINEAR);
// await viewer.setBackgroundColor(1.0, 1.0, 1.0, 1.0);
// // await viewer.createIbl(1.0, 1.0, 1.0, 100000);
// await viewer.addLight(LightType.SUN, 6500, 100000, -2, 0, 0, 1, -1, 0);
// await viewer.addLight(LightType.SPOT, 6500, 500000, 0, 0, 2, 0, 0, -1,
// falloffRadius: 10, spotLightConeInner: 1.0, spotLightConeOuter: 2.0);
// await viewer.setCameraPosition(-3, 4, 6);
// await viewer.setCameraRotation(
// Quaternion.axisAngle(Vector3(0, 1, 0), -pi / 8) *
// Quaternion.axisAngle(Vector3(1, 0, 0), -pi / 6));
// var cube =
// await viewer.createGeometry(GeometryHelper.cube(), keepData: true);
// await viewer.setMaterialPropertyFloat4(
// cube, "baseColorFactor", 0, 1.0, 1.0, 1.0, 1.0);
// var textureData =
// File("${testHelper.testDir}/assets/cube_texture_512x512.png").readAsBytesSync();
// var texture = await viewer.createTexture(textureData);
// await viewer.applyTexture(texture, cube,
// materialIndex: 0, parameterName: "baseColorMap");
// var numFrames = 60;
// // first do the render
// for (int i = 0; i < numFrames; i++) {
// await viewer.setCameraPosition(-3 + (i / numFrames * 2), 4, 6);
// await viewer.setCameraRotation(
// Quaternion.axisAngle(Vector3(0, 1, 0), -pi / 8) *
// Quaternion.axisAngle(
// Vector3(1, 0, 0), -pi / 6 - (i / numFrames * pi / 6)));
// var rendered = await testHelper.capture(viewer, "unproject_render$i");
// var renderPng =
// await pixelsToPng(rendered, dimensions.width, dimensions.height);
// File("${outDir.path}/unproject_render${i}.png")
// .writeAsBytesSync(renderPng);
// }
// // then go off and convert the video
// // now unproject the render back onto the geometry
// final textureSize = (width: 1280, height: 768);
// var pixels = <Uint8List>[];
// // note we skip the first frame
// for (int i = 0; i < numFrames; i++) {
// await viewer.setCameraPosition(-3 + (i / numFrames * 2), 4, 6);
// await viewer.setCameraRotation(
// Quaternion.axisAngle(Vector3(0, 1, 0), -pi / 8) *
// Quaternion.axisAngle(
// Vector3(1, 0, 0), -pi / 6 - (i / numFrames * pi / 6)));
// var input = pngToPixelBuffer(File(
// "${outDir.path}/a8c317af-6081-4848-8a06-f6b69bc57664_${i + 1}.png")
// .readAsBytesSync());
// var pixelBuffer = await (await viewer as ThermionViewerFFI).unproject(
// cube,
// input,
// dimensions.width,
// dimensions.height,
// textureSize.width,
// textureSize.height);
// // var png = await pixelsToPng(Uint8List.fromList(pixelBuffer),
// // dimensions.width, dimensions.height);
// await savePixelBufferToBmp(
// pixelBuffer,
// textureSize.width,
// textureSize.height,
// p.join(outDir.path, "unprojected_texture${i}.bmp"));
// pixels.add(pixelBuffer);
// if (i > 10) {
// break;
// }
// }
// // }
// final aggregatePixelBuffer = medianImages(pixels);
// await savePixelBufferToBmp(aggregatePixelBuffer, textureSize.width,
// textureSize.height, "unproject_texture.bmp");
// var pixelBufferPng = await pixelsToPng(
// Uint8List.fromList(aggregatePixelBuffer),
// dimensions.width,
// dimensions.height);
// File("${outDir.path}/unproject_texture.png")
// .writeAsBytesSync(pixelBufferPng);
// await viewer.setPostProcessing(true);
// await viewer.setToneMapping(ToneMapper.LINEAR);
// final unlit = await viewer.createUnlitMaterialInstance();
// await viewer.removeEntity(cube);
// cube = await viewer.createGeometry(GeometryHelper.cube(),
// materialInstance: unlit);
// var reconstructedTexture = await viewer.createTexture(pixelBufferPng);
// await viewer.applyTexture(reconstructedTexture, cube);
// await viewer.setCameraRotation(
// Quaternion.axisAngle(Vector3(0, 1, 0), -pi / 8) *
// Quaternion.axisAngle(Vector3(1, 0, 0), -pi / 6));
// await testHelper.capture(viewer, "unproject_reconstruct");
// // now re-render
// for (int i = 0; i < numFrames; i++) {
// await viewer.setCameraPosition(-3 + (i / numFrames * 2), 4, 6);
// await viewer.setCameraRotation(
// Quaternion.axisAngle(Vector3(0, 1, 0), -pi / 8) *
// Quaternion.axisAngle(
// Vector3(1, 0, 0), -pi / 6 - (i / numFrames * pi / 6)));
// var rendered = await testHelper.capture(viewer, "unproject_rerender$i");
// var renderPng =
// await pixelsToPng(rendered, dimensions.width, dimensions.height);
// File("${outDir.path}/unproject_rerender${i}.png")
// .writeAsBytesSync(renderPng);
// }
// }, timeout: Timeout(Duration(minutes: 2)));
// });
}