* Virtualize btMotionState and btDefaultMotionState from Bullet …

…Physics SDK to allow callbacks (pull #1297)

CHANGELOG.md

@@ -1,4 +1,5 @@
 
+ * Virtualize `btMotionState` and `btDefaultMotionState` from Bullet Physics SDK to fix that functionality. ([pull #1297](https://github.com/bytedeco/javacpp-presets/pull/1297))
  * Define `STRING_BYTES_CHARSET` to "UTF-8" for FFmpeg since it appears to assume that ([issue bytedeco/javacv#1945](https://github.com/bytedeco/javacv/issues/1945))
  * Map `at::ITensorListRef` as used by `at::cat()` in presets for PyTorch ([issue #1293](https://github.com/bytedeco/javacpp-presets/issues/1293))
  * Map `torch::data::datasets::ChunkDataReader` and related data loading classes from PyTorch ([issue #1215](https://github.com/bytedeco/javacpp-presets/issues/1215))

bullet/src/gen/java/org/bytedeco/bullet/LinearMath/btDefaultMotionState.java

@@ -38,9 +38,9 @@ public class btDefaultMotionState extends btMotionState {
 	private native void allocate();
 
 	/**synchronizes world transform from user to physics */
-	public native void getWorldTransform(@ByRef btTransform centerOfMassWorldTrans);
+	@Virtual public native @Const({false, false, true}) void getWorldTransform(@ByRef btTransform centerOfMassWorldTrans);
 
 	/**synchronizes world transform from physics to user
 	 * Bullet only calls the update of worldtransform for active objects */
-	public native void setWorldTransform(@Const @ByRef btTransform centerOfMassWorldTrans);
+	@Virtual public native void setWorldTransform(@Const @ByRef btTransform centerOfMassWorldTrans);
 }

bullet/src/gen/java/org/bytedeco/bullet/LinearMath/btMotionState.java

@@ -16,12 +16,24 @@
 @Properties(inherit = org.bytedeco.bullet.presets.LinearMath.class)
 public class btMotionState extends Pointer {
     static { Loader.load(); }
+    /** Default native constructor. */
+    public btMotionState() { super((Pointer)null); allocate(); }
+    /** Native array allocator. Access with {@link Pointer#position(long)}. */
+    public btMotionState(long size) { super((Pointer)null); allocateArray(size); }
     /** Pointer cast constructor. Invokes {@link Pointer#Pointer(Pointer)}. */
     public btMotionState(Pointer p) { super(p); }
+    private native void allocate();
+    private native void allocateArray(long size);
+    @Override public btMotionState position(long position) {
+        return (btMotionState)super.position(position);
+    }
+    @Override public btMotionState getPointer(long i) {
+        return new btMotionState((Pointer)this).offsetAddress(i);
+    }
 
 
-	public native void getWorldTransform(@ByRef btTransform worldTrans);
+	@Virtual(true) public native @Const({false, false, true}) void getWorldTransform(@ByRef btTransform worldTrans);
 
 	//Bullet only calls the update of worldtransform for active objects
-	public native void setWorldTransform(@Const @ByRef btTransform worldTrans);
+	@Virtual(true) public native void setWorldTransform(@Const @ByRef btTransform worldTrans);
 }

bullet/src/main/java/org/bytedeco/bullet/presets/LinearMath.java

@@ -148,7 +148,7 @@ public void map(InfoMap infoMap) {
 
             .put(new Info("btAlignedObjectArray.h").linePatterns("\tclass less", "\t};").skip())
 
-            .put(new Info("btIDebugDraw").virtualize())
+            .put(new Info("btIDebugDraw", "btMotionState", "btDefaultMotionState").virtualize())
 
             .put(new Info(
                     "BT_DECLARE_ALIGNED_ALLOCATOR",