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webgl_materials_video_webcam.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - materials - video - webcam</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 {
background-color: #000;
color: #fff;
margin: 0px;
overflow: hidden;
font-family:Monospace;
font-size:13px;
text-align:center;
font-weight: bold;
text-align:center;
}
a {
color:#0078ff;
}
#info {
color:#fff;
position: absolute;
top: 5px; width: 100%;
z-index:100;
}
</style>
</head>
<body>
<div id="info">
<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl video webcam input
</div>
<script src="../build/three.js"></script>
<script src="../examples/js/controls/OrbitControls.js"></script>
<script src="js/WebGL.js"></script>
<video id="video" autoplay style="display:none"></video>
<script>
if ( WEBGL.isWebGLAvailable() === false ) {
document.body.appendChild( WEBGL.getWebGLErrorMessage() );
}
var camera, scene, renderer, video;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.1, 100 );
camera.position.z = 0.01;
scene = new THREE.Scene();
video = document.getElementById( 'video' );
var texture = new THREE.VideoTexture( video );
var geometry = new THREE.PlaneBufferGeometry( 16, 9 );
geometry.scale( 0.5, 0.5, 0.5 );
var material = new THREE.MeshBasicMaterial( { map: texture } );
var count = 128;
var radius = 32;
for ( var i = 1, l = count; i <= l; i ++ ) {
var phi = Math.acos( - 1 + ( 2 * i ) / l );
var theta = Math.sqrt( l * Math.PI ) * phi;
var mesh = new THREE.Mesh( geometry, material );
mesh.position.setFromSphericalCoords( radius, phi, theta );
mesh.lookAt( camera.position );
scene.add( mesh );
}
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
var controls = new THREE.OrbitControls( camera, renderer.domElement );
controls.enableZoom = false;
controls.enablePan = false;
window.addEventListener( 'resize', onWindowResize, false );
//
if ( navigator.mediaDevices && navigator.mediaDevices.getUserMedia ) {
var constraints = { video: { width: 1280, height: 720, facingMode: 'user' } };
navigator.mediaDevices.getUserMedia( constraints ).then( function ( stream ) {
// apply the stream to the video element used in the texture
video.srcObject = stream;
video.play();
} ).catch( function ( error ) {
console.error( 'Unable to access the camera/webcam.', error );
} );
} else {
console.error( 'MediaDevices interface not available.' );
}
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function animate() {
requestAnimationFrame( animate );
renderer.render( scene, camera );
}
</script>
</body>
</html>