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在 ThreeJS 中将纹理映射到球体时,我失去了球体。相反,我收到的 consol 错误显示为 - Uncaught TypeError: Cannot call method 'add' of undefined index.html:28 and Cross-origin image load denied by Cross-Origin Resource Sharing policy。该图像的大小和分辨率正确,因为它在我尝试纹理映射的另一个实例中工作,但它在这里不起作用。这一定是我如何应用地图的问题。我对 javascript 和 ThreeJS 都是新手,所以请耐心等待。谢谢你。

<body>
    <div id="container"></div>
    <script src="javascript/mrdoob-three.js-ad419d4/build/three.js"></script>
    <script defer="defer">
      // renderer
      var renderer = new THREE.WebGLRenderer();
      renderer.setSize(window.innerWidth, window.innerHeight);
      document.body.appendChild(renderer.domElement);

      // camera
      var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 1000);
      camera.position.z = 500;

      // material
      var material = new THREE.MeshLambertMaterial({
        map: THREE.ImageUtils.loadTexture('images/physicalworldmapcolor.jpg')
      });

      // add subtle ambient lighting
      var ambientLight = new THREE.AmbientLight(0x000044);
      scene.add(ambientLight);

      // directional lighting
      var directionalLight = new THREE.DirectionalLight(0xffffff);
      directionalLight.position.set(1, 1, 1).normalize();
      scene.add(directionalLight);

      // scene
      var scene = new THREE.Scene();

      // sphere
      // the first argument of THREE.SphereGeometry is the radius, 
      // the second argument is the segmentsWidth
      // the third argument is the segmentsHeight.  

      var sphere = new THREE.Mesh(new THREE.SphereGeometry(150, 70, 50), 
          new THREE.MeshNormalMaterial(material));
      sphere.overdraw = true;
      scene.add(sphere);

      renderer.render(scene, camera);
    </script>
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1 回答 1

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您提供的代码有很多错误。只需在以下位置查看一个基本示例: https ://github.com/mrdoob/three.js/

您的脚本缺少渲染循环,您的相机未添加到场景中,在已将对象添加到“场景”后调用 Three.Scene() 构造函数。然后你有 MeshNormalMaterial() 并在其中包裹了另一种材料。这行不通,只需执行 Three.Mesh(SphereGeometry(...), material)。“overdraw”是一个材质属性,所以你必须做 sphere.material.overdraw。但我认为过度绘制只会影响 CSS 画布渲染器的内容,如果您使用 WebGLRenderer,我不确定它是否有任何意义

关于跨域错误,请在此处阅读: https ://github.com/mrdoob/three.js/wiki/How-to-run-things-locally

于 2013-07-18T15:01:42.843 回答