<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - scene animation</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
color: #000;
font-family:Monospace;
font-size:13px;
text-align:center;
background-color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
a {
color: #0af;
}
</style>
</head>
<body>
<div id="container"></div>
<div id="info">
<a href="http://threejs.org" target="_blank">three.js</a> webgl - scene animation - <a href="https://clara.io/view/96106133-2e99-40cf-8abd-64defd153e61">Three Gears Scene</a> courtesy of David Sarno</div>
<script src="../build/three.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script>
var SCREEN_WIDTH = window.innerWidth;
var SCREEN_HEIGHT = window.innerHeight;
var FLOOR = -250;
var container,stats;
var camera, scene, sceneAnimationClip;
var renderer;
var mesh, helper;
var mixer;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var clock = new THREE.Clock();
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
init();
animate();
function init() {
container = document.getElementById( 'container' );
camera = new THREE.PerspectiveCamera( 30, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 10000 );
camera.position.z = 150;
scene = new THREE.Scene();
scene.fog = new THREE.Fog( 0xffffff, 2000, 10000 );
//scene.add( camera );
// GROUND
var geometry = new THREE.PlaneBufferGeometry( 16000, 16000 );
var material = new THREE.MeshPhongMaterial( { emissive: 0x000000 } );
// var ground = new THREE.Mesh( geometry, material );
// ground.position.set( 0, FLOOR, 0 );
// ground.rotation.x = -Math.PI/2;
// /*scene.add( ground );*/
//
// ground.receiveShadow = true;
// RENDERER
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setClearColor( scene.fog.color );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
renderer.domElement.style.position = "relative";
container.appendChild( renderer.domElement );
renderer.gammaInput = true;
renderer.gammaOutput = true;
renderer.shadowMap.enabled = true;
// STATS
stats = new Stats();
container.appendChild( stats.dom );
//
var loader = new THREE.ObjectLoader();
loader.load( "models/json/scene-animation.json", function ( loadedScene ) { //这里的json应该是通过
//三维建模软件之类导出来的，包含模型和动画
sceneAnimationClip = loadedScene.animations[0];
scene = loadedScene;
scene.add( camera );
scene.fog = new THREE.Fog( 0xffffff, 2000, 10000 ); //感觉并没有什么用
mixer = new THREE.AnimationMixer( scene ); //动画场景？
mixer.clipAction( sceneAnimationClip ).play(); //播放动画？
} );
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX );
mouseY = ( event.clientY - windowHalfY );
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
var delta = 0.75 * clock.getDelta(); //时间间隔
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y = THREE.Math.clamp( camera.position.y + ( - mouseY - camera.position.y ) * .05, 0, 1000 );
camera.lookAt( scene.position );
if( mixer ) {
// console.log( "updating mixer by " + delta );
mixer.update( delta );
}
renderer.render( scene, camera );
}
</script>
</body>
</html>
