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HTML5画布阅读Three js Phong材料

2013-09-06 21:01 435 查看

创建阅读Three js发光的材料，我们可以用meshphongmaterial材料可配置的镜面，颜色，发光，和光亮。镜面反射属性定义光应用于材料的最轻的颜色，颜色的属性定义的物质基础颜色和发光性能，确定材料颜色的阴影。

<!DOCTYPE HTML>
<html>
<head>
<style>
body {
margin: 0px;
padding: 0px;
}
</style>
</head>
<body>
<div id="container"></div>
<script src="http://www.html5canvastutorials.com/libraries/three.min.js"></script>
<script defer="defer">
// revolutions per second
var angularSpeed = 0.2;
var lastTime = 0;

// this function is executed on each animation frame
function animate(){
// update
var time = (new Date()).getTime();
var timeDiff = time - lastTime;
var angleChange = angularSpeed * timeDiff * 2 * Math.PI / 1000;
cylinder.rotation.x += angleChange;
cylinder.rotation.z += angleChange;
lastTime = time;

// render
renderer.render(scene, camera);

// request new frame
requestAnimationFrame(function(){
animate();
});
}

// 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 = 700;

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

// cylinder
// API: THREE.CylinderGeometry(bottomRadius, topRadius, height, segmentsRadius, segmentsHeight)
var cylinder = new THREE.Mesh(new THREE.CylinderGeometry(100, 100, 400, 50, 50, false), new THREE.MeshPhongMaterial({
// light
specular: '#a9fcff',
// intermediate
color: '#00abb1',
// dark
emissive: '#006063',
shininess: 100
}));
cylinder.overdraw = true;
scene.add(cylinder);

// add subtle ambient lighting
var ambientLight = new THREE.AmbientLight(0x222222);
scene.add(ambientLight);

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

// start animation
animate();
</script>
</body>
</html>

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标签： Three js Phong材料

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