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feat: expose attached entity as Stream on GizmoInputHandler

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This commit is contained in:
Nick Fisher
2024-12-17 14:09:18 +08:00
parent fc4842ed6d
commit 9f9b34f662
1 changed files with 17 additions and 6 deletions
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23
thermion_dart/lib/src/input/src/implementations/gizmo_input_handler.dart
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@@ -9,6 +9,8 @@ class _Gizmo {
final GizmoAsset _gizmo; final GizmoAsset _gizmo;
ThermionEntity? _attachedTo; ThermionEntity? _attachedTo;
final attachedTo = StreamController<ThermionEntity?>.broadcast();
final GizmoType _gizmoType; final GizmoType _gizmoType;
_Gizmo(this._gizmo, this.viewer, this._gizmoType); _Gizmo(this._gizmo, this.viewer, this._gizmoType);
@@ -67,6 +69,7 @@ class _Gizmo {
} }
_attachedTo = entity; _attachedTo = entity;
attachedTo.add(_attachedTo);
await viewer.setParent(_gizmo.entity, entity); await viewer.setParent(_gizmo.entity, entity);
await viewer.setTransform(_gizmo.entity, Matrix4.identity()); await viewer.setTransform(_gizmo.entity, Matrix4.identity());
@@ -83,6 +86,7 @@ class _Gizmo {
if (_attachedTo != null) { if (_attachedTo != null) {
await viewer.setParent(_attachedTo!, 0); await viewer.setParent(_attachedTo!, 0);
} }
attachedTo.add(null);
_active = null; _active = null;
isVisible = false; isVisible = false;
} }
@@ -205,18 +209,25 @@ class _Gizmo {
} }
// Apply rotation to the current transform // Apply rotation to the current transform
gizmoTransform = rotationMatrix * gizmoTransform!; gizmoTransform = gizmoTransform! * rotationMatrix;
await viewer.setTransform(_attachedTo!, gizmoTransform!); await viewer.setTransform(_attachedTo!, gizmoTransform!);
} }
} }
class GizmoInputHandler extends InputHandler { class GizmoInputHandler extends InputHandler {
final InputHandler wrapped; final InputHandler wrapped;
final ThermionViewer viewer; final ThermionViewer viewer;
late final _gizmos = <GizmoType, _Gizmo>{}; late final _gizmos = <GizmoType, _Gizmo>{};
_Gizmo? active; _Gizmo? active;
StreamSubscription? _entityTransformUpdatedListener; StreamSubscription? _entityTransformUpdatedListener;
StreamSubscription? _attachedToListener;
final _attachedTo = StreamController<ThermionEntity?>.broadcast();
Stream<ThermionEntity?> get attachedTo => _attachedTo.stream;
GizmoType? getGizmoType() { GizmoType? getGizmoType() {
return active?._gizmoType; return active?._gizmoType;
@@ -232,6 +243,7 @@ class GizmoInputHandler extends InputHandler {
var target = _gizmos[type]!; var target = _gizmos[type]!;
if (target != active) { if (target != active) {
await _entityTransformUpdatedListener?.cancel(); await _entityTransformUpdatedListener?.cancel();
await _attachedToListener?.cancel();
if (active?._attachedTo != null) { if (active?._attachedTo != null) {
var attachedTo = active!._attachedTo!; var attachedTo = active!._attachedTo!;
await active!.detach(); await active!.detach();
@@ -242,6 +254,10 @@ class GizmoInputHandler extends InputHandler {
active!._onEntityTransformUpdated.stream.listen((event) { active!._onEntityTransformUpdated.stream.listen((event) {
_transformUpdatedController.add(event); _transformUpdatedController.add(event);
}); });
_attachedToListener = active!.attachedTo.stream.listen((entity) {
_attachedTo.add(entity);
});
} }
} }
@@ -399,9 +415,4 @@ class GizmoInputHandler extends InputHandler {
} }
} }
} }
// @override
// Future setCamera(Camera camera) async {
// await wrapped.setCamera(camera);
// }
} }