code: public void setNode(int number, Vector3D v) {
          setNode(number, v.getX(), v.getY(), v.getZ());
      }
docs: Sets coordinate of nodes of this Bezier.
  
  @param number The number of a node. The node whose number is 0 or 3 is a anchor point, and
  the node whose number is 1 or 2 is a control point.
  
  @param v The coordinates of this node.