/** used internally, not safe */
 public void calculateLocalInertia(float mass, javax.vecmath.Vector3f vector) {
   if (cShape == null) {
     return;
   }
   if (this instanceof MeshCollisionShape) {
     vector.set(0, 0, 0);
   } else {
     cShape.calculateLocalInertia(mass, vector);
   }
 }
 public void setMargin(float margin) {
   cShape.setMargin(margin);
   this.margin = margin;
 }
 public float getMargin() {
   return cShape.getMargin();
 }
 public void setScale(Vector3f scale) {
   this.scale.set(scale);
   cShape.setLocalScaling(Converter.convert(scale));
 }