AStarCollisionMap.Collision.CollisionMap.SaveToPng C# (CSharp) Метод

        public void SaveToPng()
        {
            System.IO.Directory.CreateDirectory(this.collisionMapPath + "/" +
                    this.collisionMapName + "/");
            foreach (Quad quad in this.tree.leafList)
            {
                FileStream save = new FileStream(this.collisionMapPath + "/" +
                    this.collisionMapName + "/" + this.collisionMapName + "_" + quad.imageX + "_" + quad.imageY + ".png",
                FileMode.OpenOrCreate);
                Texture2D tex = quad.collisionTexture.texture;
                tex.SaveAsPng(save, tex.Width, tex.Height);
                save.Close();
                save.Dispose();
            }
        }