code: function equals(r) {
           return r.left === this.left && r.right === this.right && r.top === this.top && r.bottom === this.bottom;
         }
docs: check if this rectangle is identical to the specified one
  @name equals
  @memberOf me.Rect.prototype
  @function
  @param  {me.Rect} rect
  @return {boolean} true if equals