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canvas_materials_video.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js canvas - materials - video</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: #f0f0f0;
margin: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<script src="../build/three.js"></script>
<script src="js/renderers/Projector.js"></script>
<script src="js/renderers/CanvasRenderer.js"></script>
<script src="js/libs/stats.min.js"></script>
<video id="video" autoplay loop crossOrigin="anonymous" webkit-playsinline style="display:none">
<source src="textures/sintel.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
<source src="textures/sintel.ogv" type='video/ogg; codecs="theora, vorbis"'>
</video>
<script>
var AMOUNT = 100;
var container, stats;
var camera, scene, renderer;
var video, image, imageContext,
imageReflection, imageReflectionContext, imageReflectionGradient,
texture, textureReflection;
var mesh;
var mouseX = 0;
var mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
var info = document.createElement( 'div' );
info.style.position = 'absolute';
info.style.top = '10px';
info.style.width = '100%';
info.style.textAlign = 'center';
info.innerHTML = '<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - video demo. playing <a href="http://durian.blender.org/" target="_blank" rel="noopener">sintel</a> trailer';
container.appendChild( info );
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.z = 1000;
scene = new THREE.Scene();
scene.background = new THREE.Color( 0xf0f0f0 );
video = document.getElementById( 'video' );
//
image = document.createElement( 'canvas' );
image.width = 480;
image.height = 204;
imageContext = image.getContext( '2d' );
imageContext.fillStyle = '#000000';
imageContext.fillRect( 0, 0, 480, 204 );
texture = new THREE.Texture( image );
var material = new THREE.MeshBasicMaterial( { map: texture, overdraw: 0.5 } );
imageReflection = document.createElement( 'canvas' );
imageReflection.width = 480;
imageReflection.height = 204;
imageReflectionContext = imageReflection.getContext( '2d' );
imageReflectionContext.fillStyle = '#000000';
imageReflectionContext.fillRect( 0, 0, 480, 204 );
imageReflectionGradient = imageReflectionContext.createLinearGradient( 0, 0, 0, 204 );
imageReflectionGradient.addColorStop( 0.2, 'rgba(240, 240, 240, 1)' );
imageReflectionGradient.addColorStop( 1, 'rgba(240, 240, 240, 0.8)' );
textureReflection = new THREE.Texture( imageReflection );
var materialReflection = new THREE.MeshBasicMaterial( { map: textureReflection, side: THREE.BackSide, overdraw: 0.5 } );
//
var plane = new THREE.PlaneGeometry( 480, 204, 4, 4 );
mesh = new THREE.Mesh( plane, material );
mesh.scale.x = mesh.scale.y = mesh.scale.z = 1.5;
scene.add(mesh);
mesh = new THREE.Mesh( plane, materialReflection );
mesh.position.y = -306;
mesh.rotation.x = - Math.PI;
mesh.scale.x = mesh.scale.y = mesh.scale.z = 1.5;
scene.add( mesh );
//
var separation = 150;
var amountx = 10;
var amounty = 10;
var PI2 = Math.PI * 2;
var material = new THREE.SpriteCanvasMaterial( {
color: 0x0808080,
program: function ( context ) {
context.beginPath();
context.arc( 0, 0, 0.5, 0, PI2, true );
context.fill();
}
} );
for ( var ix = 0; ix < amountx; ix++ ) {
for ( var iy = 0; iy < amounty; iy++ ) {
var sprite = new THREE.Sprite( material );
sprite.position.x = ix * separation - ( ( amountx * separation ) / 2 );
sprite.position.y = -153;
sprite.position.z = iy * separation - ( ( amounty * separation ) / 2 );
sprite.scale.setScalar( 2 );
scene.add( sprite );
}
}
renderer = new THREE.CanvasRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
stats = new Stats();
container.appendChild( stats.dom );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
//
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 ) * 0.2;
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * 0.05;
camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
camera.lookAt( scene.position );
if ( video.readyState === video.HAVE_ENOUGH_DATA ) {
imageContext.drawImage( video, 0, 0 );
if ( texture ) texture.needsUpdate = true;
if ( textureReflection ) textureReflection.needsUpdate = true;
}
imageReflectionContext.drawImage( image, 0, 0 );
imageReflectionContext.fillStyle = imageReflectionGradient;
imageReflectionContext.fillRect( 0, 0, 480, 204 );
renderer.render( scene, camera );
}
</script>
</body>
</html>