1、示例
示例
http://ithanmang.com/threeJs/home/201809/20180910/02-video-texture.html
效果
2、实现步骤
2.1、添加 video 标签
<video id="video" autoplay loop muted>
<source src="../../textures/video/sintel.ogv">
<source src="../../textures/video/sintel.mp4">
</video>2.2、创建视频纹理
let video = document.getElementById('video');
let texture = new THREE.VideoTexture(video);
texture.minFilter = THREE.LinearFilter;
texture.magFilter = THREE.LinearFilter;
texture.format = THREE.RGBFormat;
material.map = texture;3、示例代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link rel="icon" href="../../../three.png">
<title>使用videoTexture用视频作为输出纹理</title>
<style>
body {
margin: 0;
overflow: hidden; /* 溢出隐藏 */
background: url("../../images/bg_network.jpg") center no-repeat;
-webkit-background-size: cover;
background-size: cover;
}
#loading {
position: fixed;
top: 50%;
left: 50%;
color: #FFFFFF;
font-size: 20px;
margin-top: -30px;
margin-left: -40px;
}
#video {
position: absolute;
width: 0;
height: 0;
}
</style>
<script src="../../libs/build/three-r93.js"></script>
<script src="../../libs/examples/js/Detector.js"></script>
<script src="../../libs/examples/js/libs/dat.gui.min.js"></script>
<script src="../../libs/examples/js/libs/stats.min.js"></script>
</head>
<body>
<video id="video" autoplay loop muted>
<source src="../../textures/video/sintel.ogv">
<source src="../../textures/video/sintel.mp4">
</video>
<p id="loading">loading......</p>
<script>
let scene, camera, renderer, guiControls;
let mouseX = 0, mouseY = 0;
let stats = initStats();
/* 场景 */
function initScene() {
scene = new THREE.Scene();
}
/* 相机 */
function initCamera() {
camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 10000);
camera.position.set(0, 0, 8);
camera.lookAt(new THREE.Vector3(0, 0, 0));
}
/* 渲染器 */
function initRender() {
renderer = new THREE.WebGLRenderer({antialias: true, alpha: true});
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setClearAlpha(0.5);
document.body.appendChild(renderer.domElement);
}
/* 灯光 */
function initLight() {
scene.add(new THREE.AmbientLight(0x0c0c0c));
let spotLight1 = new THREE.SpotLight(0xffffff);
spotLight1.position.set(-400, -400, -400);
let spotLight2 = new THREE.SpotLight(0xffffff);
spotLight2.position.set(400, 400, 400);
scene.add(spotLight1);
scene.add(spotLight2);
}
/* 调试插件 */
function initGui() {
guiControls = new function () {
};
let gui = new dat.GUI();
}
/* 场景中的内容 */
function initContent() {
let planeGeometry = new THREE.PlaneGeometry(10, 5);
let material = new THREE.MeshPhongMaterial();
material.side = THREE.DoubleSide;
let mesh = new THREE.Mesh(planeGeometry, material);
scene.add(mesh);
let video = document.getElementById('video');
let texture = new THREE.VideoTexture(video);
texture.minFilter = THREE.LinearFilter;
texture.magFilter = THREE.LinearFilter;
texture.format = THREE.RGBFormat;
material.map = texture;
removeLoading();
}
/* 移除加载元素 */
function removeLoading() {
document.getElementById('loading').style.display = 'none';
}
/* 性能插件 */
function initStats() {
let stats = new Stats();
document.body.appendChild(stats.domElement);
return stats;
}
/* 窗口变动触发 */
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function onDocumentMouseMove(event) {
mouseX = (event.clientX - window.innerWidth / 2) * 0.01;
mouseY = (event.clientY - window.innerHeight / 2) * 0.01;
}
/* 数据更新 */
function update() {
stats.update();
camera.position.x += (mouseX - camera.position.x) * 0.005;
camera.position.y += (-mouseY - camera.position.y) * 0.005;
camera.lookAt(scene.position);
}
/* 初始化 */
function init() {
if (!Detector.webgl) Detector.addGetWebGLMessage();
initScene();
initCamera();
initRender();
initLight();
initContent();
initGui();
/* 监听事件 */
window.addEventListener('resize', onWindowResize, false);
document.addEventListener('mousemove', onDocumentMouseMove, false);
}
/* 循环渲染 */
function animate() {
requestAnimationFrame(animate);
renderer.render(scene, camera);
update();
}
/* 初始加载 */
(function () {
console.log("three init start...");
init();
animate();
console.log("three init end...");
})();
</script>
</body>
</html>