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newWebcam.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>web调取摄像头</title>
<script type="text/javascript" src="js/three.min.js"></script>
<script src="js/OBJLoader.js"></script>
<script src="js/MTLLoader.js"></script>
<script type="text/javascript">
var scene = null;
var camera = null;
var renderer = null;
var mesh = null;
var id = null;
function init() {
renderer = new THREE.WebGLRenderer({//渲染器
canvas: document.getElementById('mainCanvas')//画布
});
renderer.setClearColor(0x000000);//画布颜色
scene = new THREE.Scene();//创建场景
camera = new THREE.OrthographicCamera(-5, 5, 3.75, -3.75, 0.1, 100);//正交投影照相机
camera.position.set(15, 25, 25);//相机位置
camera.lookAt(new THREE.Vector3(0, 2, 0));//lookAt()设置相机所看的位置
scene.add(camera);//把相机添加到场景中
var onProgress = function ( xhr ) {
if ( xhr.lengthComputable ) {
var percentComplete = xhr.loaded / xhr.total * 100;
}
};
var onError = function ( xhr ) { };
var mtlLoader = new THREE.MTLLoader();
mtlLoader.load( 'Gemini.mtl', function( materials ) {
materials.preload();
var objLoader = new THREE.OBJLoader();
objLoader.setMaterials( materials );
objLoader.load( 'Gemini.obj', function ( object ) {
mesh = object;//储存到全局变量中
scene.add( object );
}, onProgress, onError );
});
var light = new THREE.DirectionalLight(0xffffff);//光源颜色
light.position.set(20, 10, 5);//光源位置
scene.add(light);//光源添加到场景中
id = setInterval(draw, 20);//每隔20s重绘一次
}
function draw() {//们在重绘函数中让茶壶旋转：
renderer.render(scene, camera);//调用WebGLRenderer的render函数刷新场景
mesh.rotation.y += 0.01;//添加动画
if (mesh.rotation.y > Math.PI * 2) {
mesh.rotation.y -= Math.PI * 2;
}
}
</script>
</head>
<body onload="init()">
<div style='position:relative'>
<div style='position:absolute; z-index:2; '>
<video src=""></video>
</div>
<script>
if (navigator.mediaDevices === undefined) {
navigator.mediaDevices = {};
}
if (navigator.mediaDevices.getUserMedia === undefined) {
navigator.mediaDevices.getUserMedia = function(constraints) {
var getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
if (!getUserMedia) {
return Promise.reject(new Error('getUserMedia is not implemented in this browser'));
}
return new Promise(function(resolve, reject) {
getUserMedia.call(navigator, constraints, resolve, reject);
});
}
}
window.URL = (window.URL || window.webkitURL || window.mozURL || window.msURL);
var mediaOpts = {
audio: false,
// Prefer camera resolution nearest to 1280x720.
video: { width: 1280, height: 720 },
}
function successFunc(stream) {
var video = document.querySelector('video');
if ("srcObject" in video) {
video.srcObject = stream
} else {
video.src = window.URL && window.URL.createObjectURL(stream) || stream
}
video.play();
}
function errorFunc(err) {
alert(err.name);
}
navigator.getUserMedia(mediaOpts, successFunc, errorFunc);
</script>
<div style='position:absolute; z-index:3;filter:alpha(Opacity=80);-moz-opacity:0.8;opacity: 0.8;'>
<canvas id="mainCanvas" width="1280px" height="720px" ></canvas>
</div>
</div>
</body>
</html>