function RectZone(x, y, width, height) {
      var _this;
      if (width === void 0) {
        width = 200;
      }
      if (height === void 0) {
        height = 200;
      }
      _this = _Zone.call(this) || this;
      _this.x = x;
      _this.y = y;
      _this.width = width;
      _this.height = height;
      return _this;
    }
Creates a new RectZone.
@param {number} x - The x-coordinate of the top-left corner of the rectangle.
@param {number} y - The y-coordinate of the top-left corner of the rectangle.
@param {number} [width] - The width of the rectangle.
@param {number} [height] - The height of the rectangle.