three.js的接口程序

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<!DOCTYPE html>

<html><head>    <title>Example 01.02 - First Scene</title>    <script type="text/javascript" src="../libs/three.js"></script>    <style>        body {            /* set margin to 0 and overflow to hidden, to go fullscreen */            margin: 0;            overflow: hidden;        }    </style></head><body><!-- Div which will hold the Output --><div id="WebGL-output"></div><!-- Javascript code that runs our Three.js examples --><script type="text/javascript">    // once everything is loaded, we run our Three.js stuff.    function init() {        // create a scene, that will hold all our elements such as objects, cameras and lights.        var scene = new THREE.Scene();        // create a camera, which defines where we're looking at.        var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);        // create a render and set the size        var renderer = new THREE.WebGLRenderer();        renderer.setClearColorHex();        renderer.setClearColor(new THREE.Color(0xEEEEEE));        renderer.setSize(window.innerWidth, window.innerHeight);        // show axes in the screen        var axes = new THREE.AxisHelper(20);        scene.add(axes);        // create the ground plane        var planeGeometry = new THREE.PlaneGeometry(60, 20);        var planeMaterial = new THREE.MeshBasicMaterial({color: 0xcccccc});        var plane = new THREE.Mesh(planeGeometry, planeMaterial);        // rotate and position the plane        plane.rotation.x = -0.5 * Math.PI;        plane.position.x = 15;        plane.position.y = 0;        plane.position.z = 0;        // add the plane to the scene        scene.add(plane);        // create a cube        var cubeGeometry = new THREE.BoxGeometry(4, 4, 4);        var cubeMaterial = new THREE.MeshBasicMaterial({color: 0xff0000, wireframe: false});        var cube = new THREE.Mesh(cubeGeometry, cubeMaterial);        // position the cube        cube.position.x = -4;        cube.position.y = 3;        cube.position.z = 0;        // add the cube to the scene        scene.add(cube);        // create a sphere        var sphereGeometry = new THREE.SphereGeometry(4, 20, 20);        var sphereMaterial = new THREE.MeshBasicMaterial({color: 0x7777ff, wireframe: false});        var sphere = new THREE.Mesh(sphereGeometry, sphereMaterial);        // position the sphere        sphere.position.x = 20;        sphere.position.y = 4;        sphere.position.z = 2;        // add the sphere to the scene        scene.add(sphere);        // position and point the camera to the center of the scene        camera.position.x = -30;        camera.position.y = 40;        camera.position.z = 30;        camera.lookAt(scene.position);        // add the output of the renderer to the html element        document.getElementById("WebGL-output").appendChild(renderer.domElement);        // render the scene        renderer.render(scene, camera);    }    window.onload = init;</script></body></html>

代码是《Three.js开发指南》的基础程序。

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