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想要在编辑器扩展也能访问FairyGUI图集里面的小图#xff0c;随便找了一下没有找到接口自己做一个
方法
使用UIPackage.GetItemByURL获得小图信息。从图集中复制出小图#xff0c;如果有旋转就逆旋转90度即可 图集里面的小图是有可能旋转的#xff0c;可以通过访问 …原因
想要在编辑器扩展也能访问FairyGUI图集里面的小图随便找了一下没有找到接口自己做一个
方法
使用UIPackage.GetItemByURL获得小图信息。从图集中复制出小图如果有旋转就逆旋转90度即可 图集里面的小图是有可能旋转的可以通过访问 NTexture.rotated 判断在图集中是否旋转
获取小图在图集中的起始位置
X偏移坐标可以直接 uvRect.min.x * nativeTexture.width 得到真实的X偏移 Y坐标可以根据uvRect赋值反过来获得原有公式是
uvRect.min.y 1 - region.yMax / _nativeTexture.height那么真实的公式就是
y (1 - startOffset.y) * nativeTexture.height - textureSize.y无非就是交互律。还原public NTexture(Texture texture, Rect region) 构造传入来的region参数
获得偏移和大小后只需要使用RenderTexture把小图读出来就好 RenderTexture renderTex RenderTexture.GetTemporary(nativeTexture.width, nativeTexture.height, 24, RenderTextureFormat.Default, RenderTextureReadWrite.Linear);Graphics.Blit(nativeTexture, renderTex);RenderTexture previous RenderTexture.active;RenderTexture.active renderTex;Texture2D resultTexture new Texture2D(textureSize.x, textureSize.y, nativeTexture.format, false);resultTexture.ReadPixels(new Rect((int)startOffset.x, (int)startOffset.y, textureSize.x, textureSize.y), 0, 0);resultTexture.Apply();RenderTexture.active previous;RenderTexture.ReleaseTemporary(renderTex);图集中的小图是会旋转的应该如何还原
Texture2D.GetPixel 和 Texture2D.SetPixel 接口读写非常慢 可以直接使用GetPixelData或者GetPixels导出图像数据数组操作完成后刷新图像数据 根据 nativeTexture.format 类型使用Color或者Color32格式读取
var colorArray resultTexture.GetPixelDataColor32(0)有数组后简单逆旋转90数组数据就可以得到原来的小图
for (int i 0; i textureSize.x; i)
{for (int j 0; j textureSize.y; j){colors[i * textureSize.y j] colorArray[textureSize.x - 1 - i j * textureSize.x];}
}完整代码 public Texture GetTexture(string url){PackageItem packageItem UIPackage.GetItemByURL(url);if (packageItem null)return null;NTexture nTexture packageItem.texture;Texture2D nativeTexture nTexture.nativeTexture as Texture2D;var startOffset nTexture.uvRect.min;var textureSize new Vector2Int(nTexture.width, nTexture.height);if (nTexture.rotated)textureSize new Vector2Int(nTexture.height, nTexture.width);startOffset.x * nativeTexture.width;startOffset.y (1 - startOffset.y) * nativeTexture.height - textureSize.y;RenderTexture renderTex RenderTexture.GetTemporary(nativeTexture.width, nativeTexture.height, 24, RenderTextureFormat.Default, RenderTextureReadWrite.Linear);Graphics.Blit(nativeTexture, renderTex);RenderTexture previous RenderTexture.active;RenderTexture.active renderTex;Texture2D resultTexture new Texture2D(textureSize.x, textureSize.y, nativeTexture.format, false);resultTexture.ReadPixels(new Rect((int)startOffset.x, (int)startOffset.y, textureSize.x, textureSize.y), 0, 0);resultTexture.Apply();RenderTexture.active previous;RenderTexture.ReleaseTemporary(renderTex);if (nTexture.rotated){var colorArray resultTexture.GetPixelDataColor32(0);Texture2D rotationTexture new Texture2D(textureSize.y, textureSize.x, nativeTexture.format, false);var colors rotationTexture.GetPixelDataColor32(0);for (int i 0; i textureSize.x; i){for (int j 0; j textureSize.y; j){colors[i * textureSize.y j] colorArray[textureSize.x - 1 - i j * textureSize.x];}}rotationTexture.SetPixelData(colors, 0);rotationTexture.Apply();Object.Destroy(resultTexture);resultTexture rotationTexture;}return resultTexture;}
