egret-docs-master/Engine3D/Egret3DDisp/Billboard/README.md

Billboard

场景中共告板对象 会根据场景中摄像机的旋转进行变化 使自身一直朝向摄像机

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// 创建公告板
protected createBillboard() {
    // Geometry 可以指定 
    var billboard: egret3d.Billboard = new egret3d.Billboard(new egret3d.TextureMaterial());
    this.view.addChild3D(billboard);

    billboard.y = 300;
}

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