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webgl_kinect.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>three.js - kinect</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: #000000;
margin: 0px;
overflow: hidden;
}
#info {
color: #ffffff;
font-family: Monospace;
font-size: 13px;
text-align: center;
font-weight: bold;
position: absolute;
top: 0px; width: 100%;
padding: 5px;
}
a {
color: #0040ff;
}
</style>
</head>
<body>
<script src="../build/Three.js"></script>
<script src='js/DAT.GUI.min.js'></script>
<script src="js/Detector.js"></script>
<script src="js/Stats.js"></script>
<script id="vs" type="x-shader/x-vertex">
uniform sampler2D map;
uniform float width;
uniform float height;
uniform float nearClipping, farClipping;
uniform float pointSize;
uniform float zOffset;
varying vec2 vUv;
const float XtoZ = 1.11146; // tan( 1.0144686 / 2.0 ) * 2.0;
const float YtoZ = 0.83359; // tan( 0.7898090 / 2.0 ) * 2.0;
void main() {
vUv = vec2( position.x / width, 1.0 - ( position.y / height ) );
vec4 color = texture2D( map, vUv );
float depth = ( color.r + color.g + color.b ) / 3.0;
// Projection code by @kcmic
float z = ( 1.0 - depth ) * (farClipping - nearClipping) + nearClipping;
vec4 pos = vec4(
( position.x / width - 0.5 ) * z * XtoZ,
( position.y / height - 0.5 ) * z * YtoZ,
- z + zOffset,
1.0);
gl_PointSize = pointSize;
gl_Position = projectionMatrix * modelViewMatrix * pos;
}
</script>
<script id="fs" type="x-shader/x-fragment">
uniform sampler2D map;
varying vec2 vUv;
void main() {
vec4 color = texture2D( map, vUv );
gl_FragColor = vec4( color.r, color.g, color.b, smoothstep( 8000.0, -8000.0, gl_FragCoord.z / gl_FragCoord.w ) );
}
</script>
<script>
var container;
var scene, camera, light, renderer;
var geometry, cube, mesh, material;
var mouse, center;
var stats;
var video, texture;
if ( Detector.webgl ) {
init();
animate();
} else {
document.body.appendChild( Detector.getWebGLErrorMessage() );
}
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
var info = document.createElement( 'div' );
info.id = 'info';
info.innerHTML = '<a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - kinect';
document.body.appendChild( info );
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
// container.appendChild( stats.domElement );
scene = new THREE.Scene();
center = new THREE.Vector3();
center.z = - 1000;
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.set( 0, 0, 500 );
scene.add( camera );
video = document.createElement( 'video' );
video.addEventListener( 'loadedmetadata', function ( event ) {
texture = new THREE.Texture( video );
var width = 640, height = 480;
var nearClipping = 850/*850*/, farClipping = 4000/*4000*/;
geometry = new THREE.Geometry();
for ( var i = 0, l = width * height; i < l; i ++ ) {
var position = new THREE.Vector3();
position.x = ( i % width );
position.y = Math.floor( i / width );
geometry.vertices.push( new THREE.Vertex( position ) );
}
material = new THREE.ShaderMaterial( {
uniforms: {
"map": { type: "t", value: 0, texture: texture },
"width": { type: "f", value: width },
"height": { type: "f", value: height },
"nearClipping": { type: "f", value: nearClipping },
"farClipping": { type: "f", value: farClipping },
"pointSize": { type: "f", value: 2 },
"zOffset": { type: "f", value: 1000 }
},
vertexShader: document.getElementById( 'vs' ).textContent,
fragmentShader: document.getElementById( 'fs' ).textContent,
depthWrite: false
} );
mesh = new THREE.ParticleSystem( geometry, material );
mesh.position.x = 0;
mesh.position.y = 0;
scene.add( mesh );
setInterval( function () {
if ( video.readyState === video.HAVE_ENOUGH_DATA ) {
texture.needsUpdate = true;
}
}, 1000 / 30 );
var gui = new DAT.GUI();
gui.add( material.uniforms.nearClipping, 'value' ).name( 'nearClipping' ).min( 1 ).max( 10000 ).step( 1.0 );
gui.add( material.uniforms.farClipping, 'value' ).name( 'farClipping' ).min( 1 ).max( 10000 ).step( 1.0 );
gui.add( material.uniforms.pointSize, 'value' ).name( 'pointSize' ).min( 1 ).max( 10 ).step( 1.0 );
gui.add( material.uniforms.zOffset, 'value' ).name( 'zOffset' ).min( 0 ).max( 4000 ).step( 1.0 );
gui.close();
}, false );
video.loop = true;
video.src = 'textures/kinect.webm';
video.play();
renderer = new THREE.WebGLRenderer();
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
mouse = new THREE.Vector3( 0, 0, 1 );
projector = new THREE.Projector();
ray = new THREE.Ray( camera.position );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
}
function onDocumentMouseMove( event ) {
mouse.x = ( event.clientX - window.innerWidth / 2 ) * 8;
mouse.y = ( event.clientY - window.innerHeight / 2 ) * 8;
}
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
camera.position.x += ( mouse.x - camera.position.x ) * 0.05;
camera.position.y += ( - mouse.y - camera.position.y ) * 0.05;
camera.lookAt( center );
renderer.render( scene, camera );
}
</script>
</body>
</html>