如何统一分割图像[重复]答案

【问题标题】：How do I split an image in unity [duplicate]如何统一分割图像[重复]
【发布时间】：2026-01-18 13:30:01
【问题描述】：

我想用 c# 为这张图片制作动画。精灵编辑器对我不起作用，因为我希望它是一个动态系统。如果有这种方法，如果您与我分享，我将不胜感激。

【问题讨论】：

我认为你走得很辛苦，但如果你真的想这样做，你可以计算你想要使用的区域，通过new Texture2D(width, height)创建新纹理并将其分配给Sprite。
有多个这样的图像，我认为为每个图像创建一个精灵是没有意义的。我想把这张图片用代码分割成动态的。
见@MarkSouls 评论。是的，如果您事先知道 Rect 像素大小，您可以从给定的纹理中剪切纹理或精灵。但是，如果您正在寻找适用于任何给定图像比例的动态...不，这将非常棘手^^所以..都是相同尺寸的输入图像，您是否总是希望将它们分成相同大小的部分?还有右边那个空白处呢？
所有图像的间距和大小都相同。我想分割相同大小的图像。
这能回答你的问题吗？ How to slice sprite by script ?(not use Editor)

【解决方案1】：

如果如您所说，所有源和目标平铺图像都具有已知尺寸，您可以这样做，例如

如果您需要它们为Texture2Ds（更昂贵且内存密集）

public Texture2D[] SplitTextureToTextures(Texture2D source, Vector2Int tileSize)
{
    // get the source dimensions
    var sourceWidth = source.width;
    var sourceHeight = source.height;

    // Check how often the given tileSize fits into the image
    var tileAmountX = Mathf.FloorToInt(sourceWidth / (float)tileSize.x);
    var tileAmountY = Mathf.FloorToInt(sourceHeight / (float)tileSize.y);

    var output = new Texture2D[tileAmountX * tileAmountY];

    // Iterate through the tiles horizontal then vertical
    // starting at the top left tile
    for (var y = tileAmountY - 1; y >= 0; y--)
    {
        for (var x = 0; x < tileAmountX; x++)
        {
            // get the bottom left pixel coordinate of the current tile
            var bottomLeftPixelX = x * tileSize.x;
            var bottomLeftPixelY = y * tileSize.y;

            // get the pixels in the rect for this tile
            var pixels = source.GetPixels(bottomLeftPixelX, bottomLeftPixelY, tileSize.x, tileSize.y);

            // create the new texture (adjust the additional parameters according to your needs)
            var texture = new Texture2D(tileSize.x, tileSize.y, source.format, false);
                
            // write the pixels into the new texture
            texture.SetPixels(pixels);
            texture.Apply();

            // and store it in the output
            output[x + y * tileAmountX] = texture;
        }
    }

    return output;
}

或者如果你需要他们Sprites

public Sprite[] SplitTextureToSprites(Texture2D source, Vector2Int tileSize)
{
    // get the source dimensions
    var sourceWidth = source.width;
    var sourceHeight = source.height;

    // Check how often the given tileSize fits into the image
    var tileAmountX = Mathf.FloorToInt(sourceWidth / (float)tileSize.x);
    var tileAmountY = Mathf.FloorToInt(sourceHeight / (float)tileSize.y);

    var output = new Texture2D[tileAmountX * tileAmountY];

    // Iterate through the tiles horizontal then vertical
    // starting at the top left tile
    for (var y = tileAmountY - 1; y >= 0; y--)
    {
        for (var x = 0; x < tileAmountX; x++)
        {
           // get the bottom left pixel coordinate of the current tile
            var bottomLeftPixelX = x * tileSize.x;
            var bottomLeftPixelY = y * tileSize.y;

            // instead of having to get the pixel data
            // For a sprite you just have to set the rect from which part of the texture to create a sprite
            var sprite = Sprite.Create(source, new Rect(bottomLeftPixelX, bottomLeftPixelY, tileSize.x, tileSize.y), Vector2.one * 0.5f);

            output[x + y * tileAmountX] = sprite;
        }
    }

    return output;
}

【讨论】：