【three.js练习程序】创建地球贴图

<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>ceshi</title>
    <script type="text/javascript" src=".\build\three.js"></script>
    <script src=".\examples\js\controls\TrackballControls.js"></script>
    <script src=".\examples\js\controls\DragControls.js"></script>
    <style>
        body
        {
            margin: 0;
            overflow: hidden;
        }
    </style>
</head>
<body>
<!-- 作为Three.js渲染器输出元素 -->
<div id="WebGL-output">
</div>
<!-- 第一个 Three.js 样例代码 -->
<script type="text/javascript">

    var camera, scene, renderer;
    var sphere;
    var controls;
    var objects = [];

    var fov = 45;
    var near = 0.1;
    var far = 1000;
    init();
    render();

    function init() {

        scene = new THREE.Scene();      //创建场景

        camera = new THREE.PerspectiveCamera(fov, window.innerWidth / window.innerHeight, near, far);   //创建摄像机
        camera.position.x = 100;
        camera.position.y = 100;
        camera.position.z = 100;
        camera.lookAt(scene.position);

        renderer = new THREE.WebGLRenderer();                    //创建一个WebGL渲染器并设置其大小
        renderer.setClearColor(new THREE.Color("#000000"));
        renderer.shadowMapEnabled = true;
        renderer.setSize(window.innerWidth, window.innerHeight);

        var ambientLight = new THREE.AmbientLight("#ffffff");       //加入场景光
        scene.add(ambientLight);

       // var pointLight = new THREE.PointLight("#ffffff");         //加入点光源
       // pointLight.position.set(110, 110, 110);
       // pointLight.castShadow = true;
        //scene.add(pointLight);

        var axes = new THREE.AxisHelper(200);               //创建三轴表示
        scene.add(axes);

        controls = new THREE.TrackballControls(camera);     //创建场景旋转缩放事件
        controls.rotateSpeed = 2.5;
        controls.zoomSpeed = 1.2;
        controls.panSpeed = 0.8;
        controls.noZoom = false;
        controls.noPan = false;
        controls.staticMoving = true;
        controls.dynamicDampingFactor = 0.3;
        sphere = createMesh(new THREE.SphereGeometry(100, 100, 100), "./earth.jpg");
        scene.add(sphere);

        window.addEventListener('resize', onWindowResize, false);

    }

    function createMesh(geom, imageFile) {
        var texture = THREE.ImageUtils.loadTexture(imageFile);
        var mat = new THREE.MeshPhongMaterial({ map: texture });
        var mesh = new THREE.Mesh(geom, mat);
        return mesh;
    }

    function onWindowResize() {

        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();

        renderer.setSize(window.innerWidth, window.innerHeight);

    }

    function render() {
        requestAnimationFrame(render);

        controls.update();
        sphere.material.map.needsUpdate = true;
        renderer.render(scene, camera);
    }

    document.getElementById("WebGL-output").appendChild(renderer.domElement);

</script>
</body>
</html>

不知道为什么，我再IE下能显示地球，在chrome下显示不了。

地球贴图下载地址：https://pan.baidu.com/s/1kVflpNh