如何使用Pixijs获取在加载的精灵表资产中定义的图像

how to get images defined in loaded sprite sheet asset with Pixijs

本文关键字：定义 图像 精灵 获取 Pixijs 加载 何使用      更新时间：2023-09-26

使用Pixijs，我可以按如下方式加载资产：

var assetsToLoader = ["sprite-sheet-1.json", "sprite-sheet-2.json"];
loader = new PIXI.AssetLoader(assetsToLoader);
loader.onComplete = onAssetsLoaded
loader.load();
function onAssetsLoaded () {
   // getAssets here  
}

在sprite-sheet-1.json中

{"frames": {
    "image1.png":
    {
        "frame": {"x":0,"y":0,"w":40,"h":40},
        "rotated": false,
        "trimmed": false,
        "spriteSourceSize": {"x":0,"y":0,"w":40,"h":40},
        "sourceSize": {"w":40,"h":40}
    },
    "image2.png":
    {
        "frame": {"x":40,"y":0,"w":40,"h":40},
        "rotated": false,
        "trimmed": false,
        "spriteSourceSize": {"x":0,"y":0,"w":40,"h":40},
        "sourceSize": {"w":40,"h":40}
    }},
    "meta": {
        "app": "http://www.texturepacker.com",
        "version": "1.0",
        "image": "../img/sprite-sheet-1.png.png",
        "format": "RGBA8888",
        "size": {"w":279,"h":40},
        "scale": "1",
        "smartupdate": "$TexturePacker:SmartUpdate:9e3e5afd01ea8e418afabfbdcd724485$",
        "extraMeta": "this is Extra"
    }
}

如何以编程方式获取精灵工作表中定义的图像列表？

PIXI将所有精灵存储在全局对象PIXI.TextureCache中。

function onAssetsLoaded () {
   // getAssets here  
   console.log(PIXI.TextureCache);
}

所以要得到一个单一的纹理，你可以做一些类似的事情

var texture1 = PIXI.TextureCache["image1.png"];

不过，你通常不需要这样做，因为添加精灵就像一样简单

var sprite = PIXI.Sprite.fromFrame("image1.png");
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