code: public void set(Vector3D v, double radius) {
          this.x = v.getX();
          this.y = v.getY();
          this.width = radius * 2.0;
          this.height = radius * 2.0;
      }
docs: Sets x,y-coordinate and radius.
  
  @param v The x,y-coordinate of the center of the Ellipse.
  @param radius The radius of the Ellipse.