three.js 简单的样板：带阻尼的旋转立方体和轨道控制
示例
这是基本的HTML文件，可以在启动项目时用作样板。该样板使用带有阻尼的轨道控制（可以使物体围绕物体移动并产生减速效果的相机），并创建一个旋转的立方体。
<!DOCTYPE html>
<html>
<head>
<title>Three.js Boilerplate</title>
<!--This is important to get a correct canvas size on mobile-->
<meta name='viewport' content='width=device-width, user-scalable=no'/>
<style>
body{
margin:0;
overflow:hidden;
}
/*
Next 2 paragraphs are a good practice.
In IE/Edge you have to provide the cursor images.
*/
canvas{
cursor:grab;
cursor:-webkit-grab;
cursor:-moz-grab;
}
canvas:active{
cursor:grabbing;
cursor:-webkit-grabbing;
cursor:-moz-grabbing;
}
</style>
</head>
<body>
<script xx_src='three.js/build/three.js'></script>
<script xx_src='three.js/examples/js/controls/OrbitControls.js'></script>
<script>
var scene, renderer, camera, controls, cube;
init();
function init () {
renderer = new THREE.WebGLRenderer();
//这是为了在便携式设备上获得正确的像素细节
renderer.setPixelRatio(window.devicePixelRatio);
//这将设置画布的尺寸。
renderer.setSize( window.innerWidth,window.innerHeight);
document.body.appendChild(renderer.domElement);
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera(
70, //FOV
window.innerWidth/ window.innerHeight, //aspect
1, //接近裁剪平面
100 //远裁剪平面
);
camera.position.set( 1, 3, 5 );
controls = new THREE.OrbitControls( camera,renderer.domElement);
controls.rotateSpeed= .07;
controls.enableDamping= true;
controls.dampingFactor= .05;
window.addEventListener( 'resize', function () {
camera.aspect=window.innerWidth/ window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth,window.innerHeight);
}, false );
cube = new THREE.Mesh(
new THREE.BoxGeometry( 1, 1, 1 ),
new THREE.MeshBasicMaterial()
);
scene.add( cube );
animate();
}
function animate () {
requestAnimationFrame( animate );
controls.update();
renderer.render( scene, camera );
cube.rotation.x += 0.01;
}
</script>
</body>
</html>