Method fromCenter

src/Op.ts:675–677

* Create a circle based on a center point and a radius. * @param pt center point of circle * @param radius radius of circle * @returns a Group that represents a circle

( pt:PtLike, radius:number )

   * @returns a Group that represents a circle
   */
  static fromCenter( pt:PtLike, radius:number ):Group {
    return new Group( new Pt(pt), new Pt(radius, radius) );
  }


  /**