public void Init(int width, int height, bool allowFlip, bool isTransparent, string atlasName)
        {
            mMaxRectsBinPack = new MaxRectsBinPack(width, height, allowFlip);

            Width  = width;
            Height = height;

            AllowFlip = allowFlip;

            IsTransparent = isTransparent;

            AtlasPath = GetAtlasPath(isTransparent, atlasName);
            AssetPath = GetAssetPath(isTransparent, atlasName);
        }
        /// <summary>
        /// 在TextureAtlas从Asset实例化出来时,MaxRectsBinPack里面的数据是空的,这时把ElementList中的数据反排布到MaxRectsBinPack中
        /// </summary>
        public void Layout()
        {
            mMaxRectsBinPack = new MaxRectsBinPack(Width, Height, AllowFlip);

            for (int i = ElementList.Count - 1; i >= 0; --i)
            {
                TextureAtlasElement element = ElementList[i];

                if (null != element && null != element.Tex)
                {
                    mMaxRectsBinPack.Layout((int)element.Offset.x, (int)element.Offset.y, element.Size.x, element.Size.y);
                }
                else
                {
                    ElementList.RemoveAt(i);
                }
            }

            bDirty = true;
        }