expose getters for near/far culling distance and clean up example project for more readability on frustum

lib/filament_controller.dart

@@ -345,10 +345,20 @@ abstract class FilamentController {
   Future setCameraFocalLength(double focalLength);
 
   ///
-  /// Sets the near/far culling planes for the active camera. Default values are 0.05/1000.0. See Camera.h for details.
+  /// Sets the distance (in world units) to the near/far planes for the active camera. Default values are 0.05/1000.0. See Camera.h for details.
   ///
   Future setCameraCulling(double near, double far);
 
+  ///
+  /// Get the distance (in world units) to the near culling plane for the active camera.
+  ///
+  Future<double> getCameraCullingNear();
+
+  ///
+  /// Get the distance (in world units) to the far culling plane for the active camera.
+  ///
+  Future<double> getCameraCullingFar();
+
   ///
   /// Sets the focus distance for the camera.
   ///

lib/filament_controller_ffi.dart

@@ -867,6 +867,16 @@ class FilamentControllerFFI extends FilamentController {
     set_camera_culling(_viewer!, near, far);
   }
 
+  @override
+  Future<double> getCameraCullingNear() async {
+    return get_camera_culling_near(_viewer!);
+  }
+
+  @override
+  Future<double> getCameraCullingFar() async {
+    return get_camera_culling_far(_viewer!);
+  }
+
   @override
   Future setCameraFocusDistance(double focusDistance) async {
     if (_viewer == null) {
@@ -1147,10 +1157,7 @@ class FilamentControllerFFI extends FilamentController {
     }
     var arrayPtr = get_camera_frustum(_viewer!);
     var doubleList = arrayPtr.asTypedList(24);
-    var planeNormals = [];
-    for (int i = 0; i < 6; i++) {
-      planeNormals.add(Vector3.array(doubleList.sublist(i * 3, (i + 1) * 3)));
-    }
+    print(doubleList);
 
     var frustum = Frustum();
     frustum.plane0.setFromComponents(
@@ -1165,7 +1172,7 @@ class FilamentControllerFFI extends FilamentController {
         doubleList[16], doubleList[17], doubleList[18], doubleList[19]);
     frustum.plane5.setFromComponents(
         doubleList[20], doubleList[21], doubleList[22], doubleList[23]);
-
+    flutter_filament_free(arrayPtr.cast<Void>());
     return frustum;
   }
 

lib/generated_bindings.dart

@@ -651,6 +651,18 @@ external void set_camera_culling(
   double far,
 );
 
+@ffi.Native<ffi.Double Function(ffi.Pointer<ffi.Void>)>(
+    symbol: 'get_camera_culling_near', assetId: 'flutter_filament_plugin')
+external double get_camera_culling_near(
+  ffi.Pointer<ffi.Void> viewer,
+);
+
+@ffi.Native<ffi.Double Function(ffi.Pointer<ffi.Void>)>(
+    symbol: 'get_camera_culling_far', assetId: 'flutter_filament_plugin')
+external double get_camera_culling_far(
+  ffi.Pointer<ffi.Void> viewer,
+);
+
 @ffi.Native<ffi.Pointer<ffi.Double> Function(ffi.Pointer<ffi.Void>)>(
     symbol: 'get_camera_culling_projection_matrix',
     assetId: 'flutter_filament_plugin')