feat: add removeStencilHighlight, queuePositionUpdateFromViewportCoords to ThermionViewer

thermion_dart/lib/thermion_dart/thermion_viewer.dart

@@ -203,10 +203,11 @@ abstract class ThermionViewer {
   /// 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});
+  Future<ThermionEntity> loadGlb(String path,
+      {int numInstances = 1, bool keepData = false});
 
   ///
-  /// Create a new instance of [entity]. 
+  /// Create a new instance of [entity].
   ///
   Future<ThermionEntity> createInstance(ThermionEntity entity);
 
@@ -224,7 +225,7 @@ abstract class ThermionViewer {
   /// 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,
@@ -609,12 +610,20 @@ abstract class ThermionViewer {
       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.
@@ -818,7 +827,13 @@ abstract class ThermionViewer {
   Future setGizmoVisibility(bool visible);
 
   ///
-  /// Outlines [entity].
-  /// 
-  Future setStencilHighlight(ThermionEntity entity);
+  /// 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);
 }