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

Sky

场景中天空对象 会根据场景摄像机的位置进行跟随

---

1.天空盒
// 加载天空盒资源
protected loaderSkyBox() {
    var loader: egret3d.QueueLoader = new egret3d.QueueLoader();
    loader.load("resource/doc/sky/cloudy_noon_FR.png");
    loader.load("resource/doc/sky/cloudy_noon_BK.png");
    loader.load("resource/doc/sky/cloudy_noon_LF.png");
    loader.load("resource/doc/sky/cloudy_noon_RT.png");
    loader.load("resource/doc/sky/cloudy_noon_UP.png");
    loader.load("resource/doc/sky/cloudy_noon_DN.png");
    loader.addEventListener(egret3d.LoaderEvent3D.LOADER_COMPLETE, this.onSkyBoxTexture, this);
}

// 天空盒资源加载完成 创建天空盒
protected onSkyBoxTexture(e: egret3d.LoaderEvent3D) {
    var loader: egret3d.QueueLoader = e.target;

    var fr: egret3d.ITexture = loader.getAsset("resource/doc/sky/cloudy_noon_FR.png");
    var bk: egret3d.ITexture = loader.getAsset("resource/doc/sky/cloudy_noon_BK.png");
    var lf: egret3d.ITexture = loader.getAsset("resource/doc/sky/cloudy_noon_LF.png");
    var rt: egret3d.ITexture = loader.getAsset("resource/doc/sky/cloudy_noon_RT.png");
    var up: egret3d.ITexture = loader.getAsset("resource/doc/sky/cloudy_noon_UP.png");
    var dn: egret3d.ITexture = loader.getAsset("resource/doc/sky/cloudy_noon_DN.png");

    // 创建cube贴图
    var cubeTexture: egret3d.CubeTexture = egret3d.CubeTexture.createCubeTextureByImageTexture(fr, bk, lf, rt, up, dn);

    // 创建cube geometry 和 cube 材质
    var sky: egret3d.Sky = new egret3d.Sky(new egret3d.CubeGeometry(10000, 10000, 10000), new egret3d.CubeTextureMaterial(cubeTexture), this.view.camera3D);
    // 设置天空盒 渲染模式为背面渲染
    sky.material.cullMode = egret3d.ContextConfig.FRONT;
    this.view.addChild3D(sky);
}

2.天空球 // 加载天空球资源 protected loaderSkySphere() { var loader: egret3d.QueueLoader = new egret3d.QueueLoader(); loader.load("resource/doc/sky/sky0026.png"); loader.addEventListener(egret3d.LoaderEvent3D.LOADER_COMPLETE, this.onSkySphereTexture, this); }

// 天空球资源加载完成 创建天空盒
protected onSkySphereTexture(e: egret3d.LoaderEvent3D) {
    var loader: egret3d.QueueLoader = e.target;

    var texture: egret3d.ITexture = loader.getAsset("resource/doc/sky/sky0026.png");

    // 创建SphereGeometry 和 材质
    var sky: egret3d.Sky = new egret3d.Sky(new egret3d.SphereGeometry(10000, 100, 100), new egret3d.TextureMaterial(texture), this.view.camera3D);
    // 设置天空盒 渲染模式为背面渲染
    sky.material.cullMode = egret3d.ContextConfig.FRONT;
    this.view.addChild3D(sky);
}

---