feat: re-implement (native) Gizmo class, expose preserveScaling parameter for setParent, add methods for getting viewport bounding box from renderable entity

2024-08-22 18:04:06 +08:00
parent aa17962936
commit 4a29a77a78
15 changed files with 769 additions and 347 deletions
--- a/thermion_dart/lib/thermion_dart/compatibility/native/thermion_dart.g.dart
+++ b/thermion_dart/lib/thermion_dart/compatibility/native/thermion_dart.g.dart
@@ -123,7 +123,7 @@ external void remove_ibl(
 );

@ffi.Native<
-    ffi.Int Function(
+    EntityId Function(
        ffi.Pointer<ffi.Void>,
        ffi.Uint8,
        ffi.Float,
@@ -161,7 +161,7 @@ external int add_light(
  bool shadows,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void remove_light(
  ffi.Pointer<ffi.Void> viewer,
  int entityId,
@@ -173,7 +173,7 @@ external void clear_lights(
 );

@ffi.Native<
-    ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Char>, ffi.Int)>()
+    EntityId Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Char>, ffi.Int)>()
 external int load_glb(
  ffi.Pointer<ffi.Void> sceneManager,
  ffi.Pointer<ffi.Char> assetPath,
@@ -181,7 +181,7 @@ external int load_glb(
 );

@ffi.Native<
-    ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>, ffi.Size)>()
+    EntityId Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>, ffi.Size)>()
 external int load_glb_from_buffer(
  ffi.Pointer<ffi.Void> sceneManager,
  ffi.Pointer<ffi.Void> data,
@@ -189,7 +189,7 @@ external int load_glb_from_buffer(
 );

@ffi.Native<
-    ffi.Int Function(
+    EntityId Function(
        ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Char>, ffi.Pointer<ffi.Char>)>()
 external int load_gltf(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -197,24 +197,24 @@ external int load_gltf(
  ffi.Pointer<ffi.Char> relativePath,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<EntityId Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external int create_instance(
  ffi.Pointer<ffi.Void> sceneManager,
  int id,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external int get_instance_count(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Int>)>()
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<EntityId>)>()
 external void get_instances(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
-  ffi.Pointer<ffi.Int> out,
+  ffi.Pointer<EntityId> out,
 );

@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>)>()
@@ -222,13 +222,13 @@ external void set_main_camera(
  ffi.Pointer<ffi.Void> viewer,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>)>()
+@ffi.Native<EntityId Function(ffi.Pointer<ffi.Void>)>()
 external int get_main_camera(
  ffi.Pointer<ffi.Void> viewer,
 );

@ffi.Native<
-    ffi.Bool Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Char>)>()
+    ffi.Bool Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Char>)>()
 external bool set_camera(
  ffi.Pointer<ffi.Void> viewer,
  int entity,
@@ -263,6 +263,15 @@ external void render(
  ffi.Pointer<ffi.Void> data,
 );

+@ffi.Native<
+    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Uint8>,
+        ffi.Pointer<ffi.NativeFunction<ffi.Void Function()>>)>()
+external void capture(
+  ffi.Pointer<ffi.Void> viewer,
+  ffi.Pointer<ffi.Uint8> pixelBuffer,
+  ffi.Pointer<ffi.NativeFunction<ffi.Void Function()>> callback,
+);
+
@ffi.Native<
    ffi.Void Function(
        ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Void>, ffi.Uint32, ffi.Uint32)>()
@@ -335,7 +344,7 @@ external void grab_end(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Char>,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Char>,
        ffi.Pointer<ffi.Float>, ffi.Int)>()
 external void apply_weights(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -347,7 +356,7 @@ external void apply_weights(

@ffi.Native<
    ffi.Bool Function(
-        ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Float>, ffi.Int)>()
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Float>, ffi.Int)>()
 external bool set_morph_target_weights(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
@@ -356,7 +365,7 @@ external bool set_morph_target_weights(
 );

@ffi.Native<
-    ffi.Bool Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Float>,
+    ffi.Bool Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Float>,
        ffi.Pointer<ffi.Int>, ffi.Int, ffi.Int, ffi.Float)>()
 external bool set_morph_animation(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -368,13 +377,13 @@ external bool set_morph_animation(
  double frameLengthInMs,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void clear_morph_animation(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void reset_to_rest_pose(
  ffi.Pointer<ffi.Void> sceneManager,
  int asset,
@@ -383,7 +392,7 @@ external void reset_to_rest_pose(
@ffi.Native<
    ffi.Void Function(
        ffi.Pointer<ffi.Void>,
-        ffi.Int,
+        EntityId,
        ffi.Int,
        ffi.Int,
        ffi.Pointer<ffi.Float>,
@@ -406,7 +415,8 @@ external void add_bone_animation(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Float>)>()
+    ffi.Void Function(
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Float>)>()
 external void get_local_transform(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
@@ -414,7 +424,7 @@ external void get_local_transform(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int,
        ffi.Pointer<ffi.Float>, ffi.Int)>()
 external void get_rest_local_transforms(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -425,7 +435,8 @@ external void get_rest_local_transforms(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Float>)>()
+    ffi.Void Function(
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Float>)>()
 external void get_world_transform(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
@@ -433,7 +444,7 @@ external void get_world_transform(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int, ffi.Int,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int, ffi.Int,
        ffi.Pointer<ffi.Float>)>()
 external void get_inverse_bind_matrix(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -444,7 +455,7 @@ external void get_inverse_bind_matrix(
 );

@ffi.Native<
-    ffi.Bool Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int, ffi.Int,
+    ffi.Bool Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int, ffi.Int,
        ffi.Pointer<ffi.Float>)>()
 external bool set_bone_transform(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -455,7 +466,7 @@ external bool set_bone_transform(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int, ffi.Bool,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int, ffi.Bool,
        ffi.Bool, ffi.Bool, ffi.Float, ffi.Float)>()
 external void play_animation(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -469,7 +480,7 @@ external void play_animation(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int, ffi.Int)>()
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int, ffi.Int)>()
 external void set_animation_frame(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
@@ -477,14 +488,14 @@ external void set_animation_frame(
  int animationFrame,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int)>()
 external void stop_animation(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
  int index,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external int get_animation_count(
  ffi.Pointer<ffi.Void> sceneManager,
  int asset,
@@ -492,7 +503,7 @@ external int get_animation_count(

@ffi.Native<
    ffi.Void Function(
-        ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Char>, ffi.Int)>()
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Char>, ffi.Int)>()
 external void get_animation_name(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
@@ -500,14 +511,14 @@ external void get_animation_name(
  int index,
 );

-@ffi.Native<ffi.Float Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int)>()
+@ffi.Native<ffi.Float Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int)>()
 external double get_animation_duration(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
  int index,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int)>()
+@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int)>()
 external int get_bone_count(
  ffi.Pointer<ffi.Void> sceneManager,
  int assetEntity,
@@ -515,7 +526,7 @@ external int get_bone_count(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId,
        ffi.Pointer<ffi.Pointer<ffi.Char>>, ffi.Int)>()
 external void get_bone_names(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -525,7 +536,7 @@ external void get_bone_names(
 );

@ffi.Native<
-    ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int, ffi.Int)>()
+    EntityId Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int, ffi.Int)>()
 external int get_bone(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
@@ -534,21 +545,22 @@ external int get_bone(
 );

@ffi.Native<
-    ffi.Bool Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Float>)>()
+    ffi.Bool Function(
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Float>)>()
 external bool set_transform(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
  ffi.Pointer<ffi.Float> transform,
 );

-@ffi.Native<ffi.Bool Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Bool Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external bool update_bone_matrices(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, EntityId,
        ffi.Pointer<ffi.Char>, ffi.Int)>()
 external void get_morph_target_name(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -558,14 +570,14 @@ external void get_morph_target_name(
  int index,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int)>()
+@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, EntityId, EntityId)>()
 external int get_morph_target_name_count(
  ffi.Pointer<ffi.Void> sceneManager,
  int assetEntity,
  int childEntity,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void remove_entity(
  ffi.Pointer<ffi.Void> viewer,
  int asset,
@@ -577,7 +589,7 @@ external void clear_entities(
 );

@ffi.Native<
-    ffi.Bool Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Char>,
+    ffi.Bool Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Char>,
        ffi.Int, ffi.Float, ffi.Float, ffi.Float, ffi.Float)>()
 external bool set_material_color(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -590,14 +602,14 @@ external bool set_material_color(
  double a,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void transform_to_unit_cube(
  ffi.Pointer<ffi.Void> sceneManager,
  int asset,
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Float, ffi.Float,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Float, ffi.Float,
        ffi.Float, ffi.Bool)>()
 external void queue_position_update(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -609,7 +621,7 @@ external void queue_position_update(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Float, ffi.Float,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Float, ffi.Float,
        ffi.Float, ffi.Float, ffi.Float, ffi.Bool)>()
 external void queue_rotation_update(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -624,7 +636,7 @@ external void queue_rotation_update(

@ffi.Native<
    ffi.Void Function(
-        ffi.Pointer<ffi.Void>, ffi.Int, ffi.Float, ffi.Float, ffi.Float)>()
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Float, ffi.Float, ffi.Float)>()
 external void set_position(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
@@ -634,7 +646,7 @@ external void set_position(
 );

@ffi.Native<
-    ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Float, ffi.Float,
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Float, ffi.Float,
        ffi.Float, ffi.Float, ffi.Float)>()
 external void set_rotation(
  ffi.Pointer<ffi.Void> sceneManager,
@@ -646,14 +658,14 @@ external void set_rotation(
  double w,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Float)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Float)>()
 external void set_scale(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
  double scale,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void move_camera_to_asset(
  ffi.Pointer<ffi.Void> viewer,
  int asset,
@@ -782,7 +794,7 @@ external void set_camera_manipulator_options(
 );

@ffi.Native<
-    ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Char>)>()
+    ffi.Int Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Char>)>()
 external int hide_mesh(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
@@ -790,7 +802,7 @@ external int hide_mesh(
 );

@ffi.Native<
-    ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Char>)>()
+    ffi.Int Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Char>)>()
 external int reveal_mesh(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
@@ -838,32 +850,32 @@ external void set_antialiasing(
        ffi.Int,
        ffi.Pointer<
            ffi.NativeFunction<
-                ffi.Void Function(ffi.Int entityId, ffi.Int x, ffi.Int y)>>)>()
+                ffi.Void Function(EntityId entityId, ffi.Int x, ffi.Int y)>>)>()
 external void filament_pick(
  ffi.Pointer<ffi.Void> viewer,
  int x,
  int y,
  ffi.Pointer<
          ffi.NativeFunction<
-              ffi.Void Function(ffi.Int entityId, ffi.Int x, ffi.Int y)>>
+              ffi.Void Function(EntityId entityId, ffi.Int x, ffi.Int y)>>
      callback,
 );

-@ffi.Native<ffi.Pointer<ffi.Char> Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Pointer<ffi.Char> Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external ffi.Pointer<ffi.Char> get_name_for_entity(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
 );

@ffi.Native<
-    ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Pointer<ffi.Char>)>()
+    EntityId Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Pointer<ffi.Char>)>()
 external int find_child_entity_by_name(
  ffi.Pointer<ffi.Void> sceneManager,
  int parent,
  ffi.Pointer<ffi.Char> name,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Bool)>()
+@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Bool)>()
 external int get_entity_count(
  ffi.Pointer<ffi.Void> sceneManager,
  int target,
@@ -872,17 +884,17 @@ external int get_entity_count(

@ffi.Native<
    ffi.Void Function(
-        ffi.Pointer<ffi.Void>, ffi.Int, ffi.Bool, ffi.Pointer<ffi.Int>)>()
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Bool, ffi.Pointer<EntityId>)>()
 external void get_entities(
  ffi.Pointer<ffi.Void> sceneManager,
  int target,
  bool renderableOnly,
-  ffi.Pointer<ffi.Int> out,
+  ffi.Pointer<EntityId> out,
 );

@ffi.Native<
    ffi.Pointer<ffi.Char> Function(
-        ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int, ffi.Bool)>()
+        ffi.Pointer<ffi.Void>, EntityId, ffi.Int, ffi.Bool)>()
 external ffi.Pointer<ffi.Char> get_entity_name_at(
  ffi.Pointer<ffi.Void> sceneManager,
  int target,
@@ -913,41 +925,41 @@ external void thermion_flutter_free(
@ffi.Native<
    ffi.Void Function(
        ffi.Pointer<ffi.Void>,
-        ffi.Int,
+        EntityId,
        ffi.Pointer<
            ffi.NativeFunction<
-                ffi.Void Function(ffi.Int entityId1, ffi.Int entityId2)>>,
+                ffi.Void Function(EntityId entityId1, EntityId entityId2)>>,
        ffi.Bool)>()
 external void add_collision_component(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
  ffi.Pointer<
          ffi.NativeFunction<
-              ffi.Void Function(ffi.Int entityId1, ffi.Int entityId2)>>
+              ffi.Void Function(EntityId entityId1, EntityId entityId2)>>
      callback,
  bool affectsCollidingTransform,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void remove_collision_component(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
 );

-@ffi.Native<ffi.Bool Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Bool Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external bool add_animation_component(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void remove_animation_component(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
 );

@ffi.Native<
-    ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Float>, ffi.Int,
+    EntityId Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Float>, ffi.Int,
        ffi.Pointer<ffi.Uint16>, ffi.Int, ffi.Int, ffi.Pointer<ffi.Char>)>()
 external int create_geometry(
  ffi.Pointer<ffi.Void> viewer,
@@ -959,36 +971,44 @@ external int create_geometry(
  ffi.Pointer<ffi.Char> materialPath,
 );

-@ffi.Native<ffi.Int Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<EntityId Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external int get_parent(
  ffi.Pointer<ffi.Void> sceneManager,
  int child,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int)>()
+@ffi.Native<
+    ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, EntityId, ffi.Bool)>()
 external void set_parent(
  ffi.Pointer<ffi.Void> sceneManager,
  int child,
  int parent,
+  bool preserveScaling,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId)>()
 external void test_collisions(
  ffi.Pointer<ffi.Void> sceneManager,
  int entity,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Int, ffi.Int)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, EntityId, ffi.Int)>()
 external void set_priority(
  ffi.Pointer<ffi.Void> sceneManager,
  int entityId,
  int priority,
 );

-@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Pointer<ffi.Int>)>()
+@ffi.Native<ffi.Void Function(ffi.Pointer<ffi.Void>, ffi.Pointer<EntityId>)>()
 external void get_gizmo(
  ffi.Pointer<ffi.Void> sceneManager,
-  ffi.Pointer<ffi.Int> out,
+  ffi.Pointer<EntityId> out,
+);
+
+@ffi.Native<Aabb2 Function(ffi.Pointer<ffi.Void>, EntityId)>()
+external Aabb2 get_bounding_box(
+  ffi.Pointer<ffi.Void> sceneManager,
+  int entity,
 );

@ffi.Native<
@@ -1499,6 +1519,27 @@ typedef LoadFilamentResourceIntoOutPointerFunction = ffi.Void Function(
    ffi.Pointer<ffi.Char> uri, ffi.Pointer<ResourceBuffer> out);
 typedef DartLoadFilamentResourceIntoOutPointerFunction = void Function(
    ffi.Pointer<ffi.Char> uri, ffi.Pointer<ResourceBuffer> out);
+
+final class Aabb2 extends ffi.Struct {
+  @ffi.Float()
+  external double minX;
+
+  @ffi.Float()
+  external double minY;
+
+  @ffi.Float()
+  external double maxX;
+
+  @ffi.Float()
+  external double maxY;
+}
+
+/// 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 EntityId = ffi.Int32;
+typedef DartEntityId = int;
 typedef _ManipulatorMode = ffi.Int32;
 typedef Dart_ManipulatorMode = int;
 typedef FilamentRenderCallback
@@ -1508,13 +1549,6 @@ typedef FilamentRenderCallbackFunction = ffi.Void Function(
 typedef DartFilamentRenderCallbackFunction = void Function(
    ffi.Pointer<ffi.Void> owner);

-/// 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 EntityId = ffi.Int32;
-typedef DartEntityId = int;
-
 const int __bool_true_false_are_defined = 1;

 const int true1 = 1;
--- a/thermion_dart/lib/thermion_dart/entities/abstract_gizmo.dart
+++ b/thermion_dart/lib/thermion_dart/entities/abstract_gizmo.dart
@@ -1,3 +1,23 @@



+import 'package:thermion_dart/thermion_dart/thermion_viewer.dart';
+import 'package:vector_math/vector_math_64.dart';
+
+abstract class AbstractGizmo {
+  bool get isActive;
+
+  void translate(double transX, double transY);
+
+  void reset();
+
+  void attach(ThermionEntity entity);
+
+  void detach();
+
+  Aabb2 boundingBox = Aabb2();
+
+  void checkHover(double x, double y) { 
+    if(boundingBox.containsVector2(Vector2(x, y)));
+  }
+}
--- a/thermion_dart/lib/thermion_dart/entities/gizmo.dart
+++ b/thermion_dart/lib/thermion_dart/entities/gizmo.dart
@@ -1,16 +1,18 @@
+import 'dart:ffi';

+import 'package:ffi/ffi.dart';
+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 ThermionViewer controller;
+  final ThermionEntity center;
+
+  final ThermionViewer _viewer;

  ThermionEntity? _activeAxis;
  ThermionEntity? _activeEntity;
@@ -18,29 +20,41 @@ class Gizmo extends AbstractGizmo {

  final Set<ThermionEntity> ignore;

-  Gizmo(this.x, this.y, this.z, this.controller,
+  Aabb2 boundingBox = Aabb2();
+
+  Gizmo(this.x, this.y, this.z, this.center, this._viewer,
      {this.ignore = const <ThermionEntity>{}}) {
-    controller.pickResult.listen(_onPickResult);
+    _viewer.pickResult.listen(_onPickResult);
  }

  Future _reveal() async {
-    await controller.reveal(x, null);
-    await controller.reveal(y, null);
-    await controller.reveal(z, null);
+    await _viewer.reveal(x, null);
+    await _viewer.reveal(y, null);
+    await _viewer.reveal(z, null);
+    await _viewer.reveal(center, null);
  }

+  final _stopwatch = Stopwatch();
+
+  var _translation = Vector3.zero();
+
  void translate(double transX, double transY) async {
-    late Vector3 vec;
-    if (_activeAxis == x) {
-      vec = _x;
-    } else if (_activeAxis == y) {
-      vec = _y;
-    } else if (_activeAxis == z) {
-      vec = _z;
+    if (!_stopwatch.isRunning) {
+      _stopwatch.start();
+    }
+    if (_activeAxis == x) {
+      _translation += Vector3(transX, 0.0, 0.0);
+    } else {
+      _translation += Vector3(0.0, transY, 0.0);
+    }
+
+    if (_stopwatch.elapsedMilliseconds > 16) {
+      await _viewer.queuePositionUpdate(
+          _activeEntity!, _translation.x, _translation.y, _translation.z,
+          relative: true);
+      _stopwatch.reset();
+      _translation = Vector3.zero();
    }
-    await controller.queuePositionUpdate(
-        _activeEntity!, transX * vec.x, -transY * vec.y, -transX * vec.z,
-        relative: true);
  }

  void reset() {
@@ -63,17 +77,22 @@ class Gizmo extends AbstractGizmo {
    _activeAxis = null;
    _activeEntity = entity;
    await _reveal();
-    await controller.setParent(x, entity);
-    await controller.setParent(y, entity);
-    await controller.setParent(z, entity);
+
+    await _viewer.setParent(x, entity);
+    await _viewer.setParent(y, entity);
+    await _viewer.setParent(z, entity);
+    await _viewer.setParent(center, entity);
+    boundingBox = await _viewer.getBoundingBox(x);
  }

  void detach() async {
-    await controller.setParent(x, 0);
-    await controller.setParent(y, 0);
-    await controller.setParent(z, 0);
-    await controller.hide(x, null);
-    await controller.hide(y, null);
-    await controller.hide(z, null);
+    await _viewer.setParent(x, 0);
+    await _viewer.setParent(y, 0);
+    await _viewer.setParent(z, 0);
+    await _viewer.setParent(center, 0);
+    await _viewer.hide(x, null);
+    await _viewer.hide(y, null);
+    await _viewer.hide(z, null);
+    await _viewer.hide(center, null);
  }
 }
--- a/thermion_dart/lib/thermion_dart/thermion_viewer.dart
+++ b/thermion_dart/lib/thermion_dart/thermion_viewer.dart
@@ -1,6 +1,7 @@
 import 'dart:math';
 import 'dart:typed_data';

+import 'package:thermion_dart/thermion_dart/entities/abstract_gizmo.dart';
 import 'package:thermion_dart/thermion_dart/scene.dart';
 import 'package:vector_math/vector_math_64.dart';
 import 'dart:async';
@@ -55,7 +56,6 @@ class TextureDetails {
 }

 abstract class ThermionViewer {
-  
  Future<bool> get initialized;

  ///
@@ -719,7 +719,7 @@ abstract class ThermionViewer {
  ///
  /// Sets the parent transform of [child] to [parent].
  ///
-  Future setParent(ThermionEntity child, ThermionEntity parent);
+  Future setParent(ThermionEntity child, ThermionEntity parent, { bool preserveScaling });

  ///
  /// Test all collidable entities against this entity to see if any have collided.
@@ -738,7 +738,7 @@ abstract class ThermionViewer {
  Scene get scene;

  ///
-  ///
+  /// The gizmo for translating/rotating objects. Only one gizmo is present in the scene.
  ///
  AbstractGizmo? get gizmo;

@@ -746,16 +746,10 @@ abstract class ThermionViewer {
  /// 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> getBoundingBox(ThermionEntity entity);
 }

-abstract class AbstractGizmo {
-  bool get isActive;
-
-  void translate(double transX, double transY);
-
-  void reset();
-
-  void attach(ThermionEntity entity);
-
-  void detach();
-}
--- a/thermion_dart/lib/thermion_dart/thermion_viewer_ffi.dart
+++ b/thermion_dart/lib/thermion_dart/thermion_viewer_ffi.dart
@@ -6,6 +6,7 @@ import 'package:thermion_dart/thermion_dart/compatibility/compatibility.dart';
 import 'package:thermion_dart/thermion_dart/entities/gizmo.dart';
 import 'package:thermion_dart/thermion_dart/scene.dart';
 import 'package:vector_math/vector_math_64.dart';
+import 'package:vector_math/vector_math_64.dart' as v64;
 import 'thermion_viewer.dart';
 import 'scene_impl.dart';
 import 'package:logging/logging.dart';
@@ -67,9 +68,9 @@ class ThermionViewerFFI extends ThermionViewer {
    this._driver = driver ?? nullptr;
    this._sharedContext = sharedContext ?? nullptr;
    try {
-      _onPickResultCallable =
-          NativeCallable<Void Function(Int entityId, Int x, Int y)>.listener(
-              _onPickResult);
+      _onPickResultCallable = NativeCallable<
+          Void Function(
+              EntityId entityId, Int x, Int y)>.listener(_onPickResult);
    } catch (err) {
      _logger.severe(
          "Failed to set pick result callback. This is expected if running on web/wasm");
@@ -127,9 +128,9 @@ class ThermionViewerFFI extends ThermionViewer {

    await setCameraManipulatorOptions(zoomSpeed: 1.0);

-    final out = allocator<Int>(3);
+    final out = allocator<EntityId>(4);
    get_gizmo(_sceneManager!, out);
-    _gizmo = Gizmo(out[0], out[1], out[2], this);
+    _gizmo = Gizmo(out[0], out[1], out[2], out[3], this);
    allocator.free(out);

    this._initialized.complete(true);
@@ -408,7 +409,7 @@ class ThermionViewerFFI extends ThermionViewer {
  @override
  Future<List<ThermionEntity>> getInstances(ThermionEntity entity) async {
    var count = await getInstanceCount(entity);
-    var out = allocator<Int>(count);
+    var out = allocator<Int32>(count);
    get_instances(_sceneManager!, entity, out);
    var instances = <ThermionEntity>[];
    for (int i = 0; i < count; i++) {
@@ -1364,7 +1365,7 @@ class ThermionViewerFFI extends ThermionViewer {
    _scene!.registerSelected(entityId);
  }

-  late NativeCallable<Void Function(Int entityId, Int x, Int y)>
+  late NativeCallable<Void Function(EntityId entityId, Int x, Int y)>
      _onPickResultCallable;

  ///
@@ -1553,7 +1554,7 @@ class ThermionViewerFFI extends ThermionViewer {
  Future<List<ThermionEntity>> getChildEntities(
      ThermionEntity parent, bool renderableOnly) async {
    var count = get_entity_count(_sceneManager!, parent, renderableOnly);
-    var out = allocator<Int>(count);
+    var out = allocator<EntityId>(count);
    get_entities(_sceneManager!, parent, renderableOnly, out);
    var outList =
        List.generate(count, (index) => out[index]).cast<ThermionEntity>();
@@ -1612,9 +1613,9 @@ class ThermionViewerFFI extends ThermionViewer {
    // ignore: sdk_version_since

    if (callback != null) {
-      var ptr =
-          NativeCallable<Void Function(Int entityId1, Int entityId2)>.listener(
-              callback);
+      var ptr = NativeCallable<
+          Void Function(
+              EntityId entityId1, EntityId entityId2)>.listener(callback);
      add_collision_component(
          _sceneManager!, entity, ptr.nativeFunction, affectsTransform);
      _collisions[entity] = ptr;
@@ -1699,11 +1700,11 @@ class ThermionViewerFFI extends ThermionViewer {
  ///
  ///
  @override
-  Future setParent(ThermionEntity child, ThermionEntity parent) async {
+  Future setParent(ThermionEntity child, ThermionEntity parent, { bool preserveScaling = false}) async {
    if (_sceneManager == null) {
      throw Exception("Asset manager must be non-null");
    }
-    set_parent(_sceneManager!, child, parent);
+    set_parent(_sceneManager!, child, parent, preserveScaling);
  }

  ///
@@ -1736,4 +1737,11 @@ class ThermionViewerFFI extends ThermionViewer {
  Future setPriority(ThermionEntity entityId, int priority) async {
    set_priority(_sceneManager!, entityId, priority);
  }
+
+  @override
+  Future<v64.Aabb2> getBoundingBox(ThermionEntity entityId) async {
+    final result = get_bounding_box(_sceneManager!, entityId);
+    return v64.Aabb2.minMax(v64.Vector2(result.minX, result.minY),
+        v64.Vector2(result.maxX, result.maxY));
+  }
 }
--- a/thermion_dart/lib/thermion_dart/thermion_viewer_stub.dart
+++ b/thermion_dart/lib/thermion_dart/thermion_viewer_stub.dart
@@ -1,6 +1,7 @@
 import 'dart:math';
 import 'dart:typed_data';

+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:vector_math/vector_math_64.dart';
@@ -608,7 +609,7 @@ 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();
  }
@@ -757,4 +758,10 @@ class ThermionViewerStub extends ThermionViewer {
    // TODO: implement capture
    throw UnimplementedError();
  }
+  
+  @override
+  Future<Aabb2> getBoundingBox(ThermionEntity entity) {
+    // TODO: implement getBoundingBox
+    throw UnimplementedError();
+  }
 }