private static CompoundCollisionShape createCompoundShape(
            Node rootNode, CompoundCollisionShape shape, boolean meshAccurate) {
        return createCompoundShape(rootNode, rootNode, shape, meshAccurate, false);
    }
Calculate the correct transform for a collision shape relative to the
ancestor for which the shape was generated.

@param spat
@param parent
@return a new instance (not null)
jme3-jbullet/src/main/java/com/jme3/bullet/util/CollisionShapeFactory.java