Method globalToLocal

packages/fairygui/src/core/GObject.ts:804–819

* Convert global point to local * 全局坐标转本地坐标

(ax: number = 0, ay: number = 0, outPoint?: Point)

     * 全局坐标转本地坐标
     */
    public globalToLocal(ax: number = 0, ay: number = 0, outPoint?: Point): Point {
        outPoint = outPoint || new Point();
        outPoint.x = ax;
        outPoint.y = ay;

        if (this._displayObject) {
            this._displayObject.globalToLocal(outPoint, outPoint);
        }

        if (this._pivotAsAnchor) {
            outPoint.x -= this._pivotX * this._width;
            outPoint.y -= this._pivotY * this._height;
        }

        return outPoint;
    }

    /**
     * Convert local rect to global