<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>坦克</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 {
font-family: Monospace;
background-color: #000;
color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
color: #fff;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 100;
display:block;
}
#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
</style>
<script src="js/three.min.js"></script>
<script src="js/OBJLoader.js"></script>
<script src="js/MTLLoader.js"></script>
<script src="js/OBJMTLLoader.js"></script>
<script src="js/Detector.js"></script>
<script src="js/stats.min.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats;
var camera,cameraTarget, scene, renderer;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
function start3d(){
init();
animate();
}
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 0.1, 10000);
//camera.position.z = 5;
camera.position.set( 8,10,8);
cameraTarget = new THREE.Vector3(0, 0, 0 );
// scene
scene = new THREE.Scene();
// Grid
var size = 14, step = 1;
var geometry = new THREE.Geometry();
var material = new THREE.LineBasicMaterial( { color: 0x303030 } );
for ( var i = - size; i <= size; i += step ) {
geometry.vertices.push( new THREE.Vector3( - size, - 0.04, i ) );
geometry.vertices.push( new THREE.Vector3( size, - 0.04, i ) );
geometry.vertices.push( new THREE.Vector3( i, - 0.04, - size ) );
geometry.vertices.push( new THREE.Vector3( i, - 0.04, size ) );
}
var line = new THREE.Line( geometry, material, THREE.LinePieces );
scene.add( line );
/*
var ambient = new THREE.AmbientLight( 0x101030 );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0xffeedd );
directionalLight.position.set( 0, 0, 1 );
scene.add( directionalLight );*/
// texture
var manager = new THREE.LoadingManager();
manager.onProgress = function ( item, loaded, total ) {
console.log( item, loaded, total );
};
var texture = new THREE.Texture();
var onProgress = function ( xhr ) {
if ( xhr.lengthComputable ) {
var percentComplete = xhr.loaded / xhr.total * 100;
console.log( Math.round(percentComplete, 2) + '% downloaded' );
}
};
var onError = function ( xhr ) {
};
var loader = new THREE.ImageLoader( manager );
loader.load( 'xuebao-g.jpg', function ( image ) {
texture.image = image;
texture.needsUpdate = true;
} );
// model
var loader = new THREE.OBJMTLLoader();
loader.load('tank.obj','tank.mtl',function(object){
scene.add( object );
camera.lookAt(object.position);
}, onProgress, onError );
// Lights
scene.add( new THREE.AmbientLight( 0x777777 ) );
addShadowedLight( 1, 1, 1, 0xffffff, 1.35 );
addShadowedLight( 0.5, 1, -1, 0xffaa00, 1 );
//
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
//
// stats
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
container.appendChild( stats.domElement );
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 ) / 2;
mouseY = ( event.clientY - windowHalfY ) / 2;
}
function addShadowedLight( x, y, z, color, intensity ) {
var directionalLight = new THREE.DirectionalLight( color, intensity );
directionalLight.position.set( x, y, z )
scene.add( directionalLight );
directionalLight.castShadow = true;
// directionalLight.shadowCameraVisible = true;
var d = 1;
directionalLight.shadowCameraLeft = -d;
directionalLight.shadowCameraRight = d;
directionalLight.shadowCameraTop = d;
directionalLight.shadowCameraBottom = -d;
directionalLight.shadowCameraNear = 1;
directionalLight.shadowCameraFar = 4;
directionalLight.shadowMapWidth = 1024;
directionalLight.shadowMapHeight = 1024;
directionalLight.shadowBias = -0.005;
directionalLight.shadowDarkness = 0.15;
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
/*
camera.position.x += ( mouseX - camera.position.x ) * .1;
camera.position.y += ( - mouseY - camera.position.y ) * .1;
camera.lookAt( scene.position );
renderer.render( scene, camera );
*/
var timer = Date.now() * 0.0005;
//console.log(Math.sin( timer ) * 3);
camera.position.x = Math.sin( timer ) * 15;
camera.position.z = Math.cos( timer ) *15;
camera.lookAt( cameraTarget );
renderer.render( scene, camera );
}
</script>
</head>
<body onload="start3d()">
<div id="info">
<a href="javascript:;" target="_blank">坦克</a> - 3D
</div>
</body>
</html>
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