code: function Rectangle(x, y, width, height)
  {
      /**
       * @member {number}
       * @default 0
       */
      this.x = x || 0;
  
      /**
       * @member {number}
       * @default 0
       */
      this.y = y || 0;
  
      /**
       * @member {number}
       * @default 0
       */
      this.width = width || 0;
  
      /**
       * @member {number}
       * @default 0
       */
      this.height = height || 0;
  
      /**
       * The type of the object, mainly used to avoid `instanceof` checks
       *
       * @member {number}
       */
      this.type = CONST.SHAPES.RECT;
  }
docs: the Rectangle object is an area defined by its position, as indicated by its top-left corner point (x, y) and by its width and its height.
  
  @class
  @memberof PIXI
  @param x {number} The X coordinate of the upper-left corner of the rectangle
  @param y {number} The Y coordinate of the upper-left corner of the rectangle
  @param width {number} The overall width of this rectangle
  @param height {number} The overall height of this rectangle