Path3D: Fixed bug where clone() didn't replace Path3Ds

Renderer2D: Fixed bug where normal math modifed Path3D.Normal

src/snap/gfx3d/CameraView.java

@@ -240,7 +240,7 @@ public Rect getBoundsMarked()
     protected void cameraChanged(PropChange aPC)
     {
         //_pcs.fireDeepChange(this, aPC);
-        relayout();
+        //relayout();
         repaint();
     }
 

src/snap/gfx3d/Path3D.java

@@ -35,6 +35,9 @@ public class Path3D extends Shape3D implements Cloneable {
     // The cached path (2d)
     private Path  _path;
 
+    // Cached array of this Path3D to efficiently satisfy getPath3Ds() method
+    private Path3D[]  _path3Ds = { this };
+
     // The Triangle path
     private Path3D[]  _trianglePaths;
 
@@ -600,6 +603,9 @@ public Path3D clone()
         try { clone = (Path3D) super.clone(); }
         catch(Exception e) { throw new RuntimeException(e); }
 
+        // Reset _path3ds
+        clone._path3Ds = new Path3D[] { clone };
+
         // Copy elements
         clone._elements = new ArrayList<>(_elements);
         clone._points = new ArrayList<>(_points.size());
@@ -610,16 +616,15 @@ public Path3D clone()
             for (Path3D path3D : _layers)
                 clone._layers.add(path3D.clone());
         }
+
+        // Return clone
         return clone;
     }
 
     /**
      * Returns the array of Path3D that can render this shape.
      */
-    public Path3D[] getPath3Ds()  { return _path3ds; }
-
-    // Cached array of this Path3D to efficiently satisfy super method
-    private Path3D[]  _path3ds = { this };
+    public Path3D[] getPath3Ds()  { return _path3Ds; }
 
     /**
      * Standard toString implementation.

src/snap/gfx3d/Renderer2D.java

@@ -157,7 +157,7 @@ protected void addPathsForShape(Shape3D aShape)
 
             // Get normal
             Vector3D pathNormal = path3d.getNormal();
-            Vector3D camPathNormal = worldToCameraXfm.transform(pathNormal);
+            Vector3D camPathNormal = worldToCameraXfm.transform(pathNormal.clone());
             camPathNormal.normalize();
 
             // Backface culling : Only add paths that face the camera