commit ca4b22de828009a4af1abbc5263a3e6394197cb3
Author: Leszek Koltunski <leszek@koltunski.pl>
Date:   Sun May 24 22:03:54 2020 +0100

    In library: allow a mixture of a deep and shallow copy of a Mesh ( mVertAttribs1 might be copied deeply or shallowly, mVertAttribs2 are always copied deeeply).
    Port RubikCube to the new library.

diff --git a/src/main/java/org/distorted/examples/predeform/PredeformRenderer.java b/src/main/java/org/distorted/examples/predeform/PredeformRenderer.java
index d9d1785..67fcab2 100644
--- a/src/main/java/org/distorted/examples/predeform/PredeformRenderer.java
+++ b/src/main/java/org/distorted/examples/predeform/PredeformRenderer.java
@@ -74,7 +74,7 @@ class PredeformRenderer implements GLSurfaceView.Renderer
 
       mTexture = act.getTexture();
       mMesh1   = act.getMesh();
-      mMesh2   = mMesh1.deepCopy();
+      mMesh2   = mMesh1.copy(true);
 
       mQuat1 = new Static4D(0,0,0,1);  // unity
       mQuat2 = new Static4D(0,0,0,1);  // quaternions