feat: add rotation gizmo

thermion_dart/lib/src/input/src/implementations/gizmo_input_handler.dart

@@ -128,6 +128,10 @@ class GizmoInputHandler extends InputHandler {
   final InputHandler wrapped;
   final ThermionViewer viewer;
   late final _Gizmo translationGizmo;
+  late final _Gizmo rotationGizmo;
+  _Gizmo get active =>
+      type == GizmoType.translation ? translationGizmo : rotationGizmo;
+  GizmoType type = GizmoType.translation;
 
   Stream<({ThermionEntity entity, Matrix4 transform})>
       get onEntityTransformUpdated =>
@@ -145,9 +149,12 @@ class GizmoInputHandler extends InputHandler {
     }
     await viewer.initialized;
     final view = await viewer.getViewAt(0);
-    var translationGizmoAsset =
-        await viewer.createGizmo(view, GizmoType.translation);
-    this.translationGizmo = _Gizmo(translationGizmoAsset, viewer);
+
+    var tg = await viewer.createGizmo(view, GizmoType.translation);
+    this.translationGizmo = _Gizmo(tg, viewer);
+    var rg = await viewer.createGizmo(view, GizmoType.rotation);
+    this.rotationGizmo = _Gizmo(rg, viewer);
+
     _initialized.complete(true);
   }
 
@@ -156,6 +163,7 @@ class GizmoInputHandler extends InputHandler {
 
   @override
   Future dispose() async {
+    await viewer.removeEntity(rotationGizmo._gizmo);
     await viewer.removeEntity(translationGizmo._gizmo);
   }
 
@@ -192,13 +200,13 @@ class GizmoInputHandler extends InputHandler {
 
     await viewer.pick(localPosition.x.toInt(), localPosition.y.toInt(),
         (result) async {
-      if (translationGizmo._gizmo.isNonPickable(result.entity) ||
+      if (active._gizmo.isNonPickable(result.entity) ||
           result.entity == FILAMENT_ENTITY_NULL) {
-        await translationGizmo.detach();
+        await active.detach();
         return;
       }
-      if (!translationGizmo._gizmo.isGizmoEntity(result.entity)) {
-        translationGizmo.attach(result.entity);
+      if (!active._gizmo.isGizmoEntity(result.entity)) {
+        active.attach(result.entity);
       }
     });
   }
@@ -208,19 +216,19 @@ class GizmoInputHandler extends InputHandler {
     if (!_initialized.isCompleted) {
       return;
     }
-    translationGizmo.checkHover(
+    active.checkHover(
         localPosition.x.floor(), localPosition.y.floor());
   }
 
   @override
   Future<void> onPointerMove(
       Vector2 localPosition, Vector2 delta, bool isMiddle) async {
-    if (!isMiddle && translationGizmo._active != null) {
+    if (!isMiddle && active._active != null) {
       final scaledDelta = Vector2(
         delta.x,
         delta.y,
       );
-      translationGizmo._updateTransform(localPosition, scaledDelta);
+      active._updateTransform(localPosition, scaledDelta);
       return;
     }
     return wrapped.onPointerMove(localPosition, delta, isMiddle);
@@ -268,21 +276,19 @@ class GizmoInputHandler extends InputHandler {
   }
 
   Future detach(ThermionAsset asset) async {
-    
-    if (translationGizmo._attachedTo == asset.entity) {
-      await translationGizmo.detach();
+    if (active._attachedTo == asset.entity) {
+      await active.detach();
       return;
     }
     final childEntities = await asset.getChildEntities();
-    for(final childEntity in childEntities) {
-      if(translationGizmo._attachedTo == childEntity) {
-        await translationGizmo.detach();
-      return;
+    for (final childEntity in childEntities) {
+      if (active._attachedTo == childEntity) {
+        await active.detach();
+        return;
       }
     }
-     
   }
-  
+
   // @override
   // Future setCamera(Camera camera) async  {
   //   await wrapped.setCamera(camera);

thermion_dart/lib/src/viewer/src/ffi/src/thermion_dart.g.dart

@@ -1388,17 +1388,35 @@ external void remove_skybox_render_thread(
             ffi.Pointer<TSceneManager>,
             ffi.Pointer<TView>,
             ffi.Pointer<TScene>,
+            ffi.UnsignedInt,
             ffi.Pointer<
                 ffi.NativeFunction<ffi.Void Function(ffi.Pointer<TGizmo>)>>)>(
-    isLeaf: true)
-external ffi.Pointer<TGizmo> SceneManager_createGizmoRenderThread(
+    symbol: "SceneManager_createGizmoRenderThread", isLeaf: true)
+external ffi.Pointer<TGizmo> _SceneManager_createGizmoRenderThread(
   ffi.Pointer<TSceneManager> tSceneManager,
   ffi.Pointer<TView> tView,
   ffi.Pointer<TScene> tScene,
+  int tGizmoType,
   ffi.Pointer<ffi.NativeFunction<ffi.Void Function(ffi.Pointer<TGizmo>)>>
       onComplete,
 );
 
+ffi.Pointer<TGizmo> SceneManager_createGizmoRenderThread(
+  ffi.Pointer<TSceneManager> tSceneManager,
+  ffi.Pointer<TView> tView,
+  ffi.Pointer<TScene> tScene,
+  TGizmoType tGizmoType,
+  ffi.Pointer<ffi.NativeFunction<ffi.Void Function(ffi.Pointer<TGizmo>)>>
+      onComplete,
+) =>
+    _SceneManager_createGizmoRenderThread(
+      tSceneManager,
+      tView,
+      tScene,
+      tGizmoType.value,
+      onComplete,
+    );
+
 @ffi.Native<
         ffi.Void Function(
             ffi.Pointer<TSceneManager>,
@@ -1688,14 +1706,31 @@ external void unproject_texture_render_thread(
 );
 
 @ffi.Native<
-    ffi.Pointer<TGizmo> Function(ffi.Pointer<TSceneManager>, ffi.Pointer<TView>,
-        ffi.Pointer<TScene>)>(isLeaf: true)
-external ffi.Pointer<TGizmo> SceneManager_createGizmo(
+    ffi.Pointer<TGizmo> Function(
+        ffi.Pointer<TSceneManager>,
+        ffi.Pointer<TView>,
+        ffi.Pointer<TScene>,
+        ffi.UnsignedInt)>(symbol: "SceneManager_createGizmo", isLeaf: true)
+external ffi.Pointer<TGizmo> _SceneManager_createGizmo(
   ffi.Pointer<TSceneManager> tSceneManager,
   ffi.Pointer<TView> tView,
   ffi.Pointer<TScene> tScene,
+  int tGizmoType,
 );
 
+ffi.Pointer<TGizmo> SceneManager_createGizmo(
+  ffi.Pointer<TSceneManager> tSceneManager,
+  ffi.Pointer<TView> tView,
+  ffi.Pointer<TScene> tScene,
+  TGizmoType tGizmoType,
+) =>
+    _SceneManager_createGizmo(
+      tSceneManager,
+      tView,
+      tScene,
+      tGizmoType.value,
+    );
+
 @ffi.Native<
     ffi.Pointer<TSceneAsset> Function(
         ffi.Pointer<TSceneManager>,
@@ -2487,6 +2522,20 @@ final class Aabb3 extends ffi.Struct {
   external double halfExtentZ;
 }
 
+enum TGizmoType {
+  TRANSLATION(0),
+  ROTATION(1);
+
+  final int value;
+  const TGizmoType(this.value);
+
+  static TGizmoType fromValue(int value) => switch (value) {
+        0 => TRANSLATION,
+        1 => ROTATION,
+        _ => throw ArgumentError("Unknown value for TGizmoType: $value"),
+      };
+}
+
 enum TSamplerCompareFunc {
   /// !< Less or equal
   LE(0),

thermion_dart/lib/src/viewer/src/ffi/src/thermion_viewer_ffi.dart

@@ -2066,7 +2066,7 @@ class ThermionViewerFFI extends ThermionViewer {
     var scene = View_getScene(view.view);
     final gizmo = await withPointerCallback<TGizmo>((cb) {
       SceneManager_createGizmoRenderThread(
-          _sceneManager!, view.view, scene, cb);
+          _sceneManager!, view.view, scene, TGizmoType.values[gizmoType.index], cb);
     });
     if (gizmo == nullptr) {
       throw Exception("Failed to create gizmo");