mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-26 23:44:56 +01:00
174 lines
3.5 KiB
HTML
Executable File
174 lines
3.5 KiB
HTML
Executable File
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<title>three.js webgl - buffergeometry [particles]</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 {
|
|
color: #cccccc;
|
|
font-family:Monospace;
|
|
font-size:13px;
|
|
text-align:center;
|
|
|
|
background-color: #050505;
|
|
margin: 0px;
|
|
overflow: hidden;
|
|
}
|
|
|
|
#info {
|
|
position: absolute;
|
|
top: 0px; width: 100%;
|
|
padding: 5px;
|
|
}
|
|
|
|
a {
|
|
|
|
color: #0080ff;
|
|
}
|
|
</style>
|
|
</head>
|
|
<body>
|
|
|
|
<div id="container"></div>
|
|
<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> webgl - buffergeometry - particles</div>
|
|
|
|
<script src="../build/three.min.js"></script>
|
|
|
|
<script src="js/Detector.js"></script>
|
|
<script src="js/libs/stats.min.js"></script>
|
|
|
|
<script>
|
|
|
|
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
|
|
|
|
var container, stats;
|
|
|
|
var camera, scene, renderer;
|
|
|
|
var mesh;
|
|
|
|
init();
|
|
animate();
|
|
|
|
function init() {
|
|
|
|
container = document.getElementById( 'container' );
|
|
|
|
//
|
|
|
|
camera = new THREE.PerspectiveCamera( 27, window.innerWidth / window.innerHeight, 5, 3500 );
|
|
camera.position.z = 2750;
|
|
|
|
scene = new THREE.Scene();
|
|
scene.fog = new THREE.Fog( 0x050505, 2000, 3500 );
|
|
|
|
//
|
|
|
|
var particles = 500000;
|
|
|
|
var geometry = new THREE.BufferGeometry();
|
|
|
|
var positions = new Float32Array( particles * 3 );
|
|
var colors = new Float32Array( particles * 3 );
|
|
|
|
var color = new THREE.Color();
|
|
|
|
var n = 1000, n2 = n / 2; // particles spread in the cube
|
|
|
|
for ( var i = 0; i < positions.length; i += 3 ) {
|
|
|
|
// positions
|
|
|
|
var x = Math.random() * n - n2;
|
|
var y = Math.random() * n - n2;
|
|
var z = Math.random() * n - n2;
|
|
|
|
positions[ i ] = x;
|
|
positions[ i + 1 ] = y;
|
|
positions[ i + 2 ] = z;
|
|
|
|
// colors
|
|
|
|
var vx = ( x / n ) + 0.5;
|
|
var vy = ( y / n ) + 0.5;
|
|
var vz = ( z / n ) + 0.5;
|
|
|
|
color.setRGB( vx, vy, vz );
|
|
|
|
colors[ i ] = color.r;
|
|
colors[ i + 1 ] = color.g;
|
|
colors[ i + 2 ] = color.b;
|
|
|
|
}
|
|
|
|
geometry.addAttribute( 'position', new THREE.BufferAttribute( positions, 3 ) );
|
|
geometry.addAttribute( 'color', new THREE.BufferAttribute( colors, 3 ) );
|
|
|
|
geometry.computeBoundingSphere();
|
|
|
|
//
|
|
|
|
var material = new THREE.PointCloudMaterial( { size: 15, vertexColors: THREE.VertexColors } );
|
|
|
|
particleSystem = new THREE.PointCloud( geometry, material );
|
|
scene.add( particleSystem );
|
|
|
|
//
|
|
|
|
renderer = new THREE.WebGLRenderer( { antialias: false } );
|
|
renderer.setClearColor( scene.fog.color );
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
|
|
container.appendChild( renderer.domElement );
|
|
|
|
//
|
|
|
|
stats = new Stats();
|
|
stats.domElement.style.position = 'absolute';
|
|
stats.domElement.style.top = '0px';
|
|
container.appendChild( stats.domElement );
|
|
|
|
//
|
|
|
|
window.addEventListener( 'resize', onWindowResize, false );
|
|
|
|
}
|
|
|
|
function onWindowResize() {
|
|
|
|
camera.aspect = window.innerWidth / window.innerHeight;
|
|
camera.updateProjectionMatrix();
|
|
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
|
|
}
|
|
|
|
//
|
|
|
|
function animate() {
|
|
|
|
requestAnimationFrame( animate );
|
|
|
|
render();
|
|
stats.update();
|
|
|
|
}
|
|
|
|
function render() {
|
|
|
|
var time = Date.now() * 0.001;
|
|
|
|
particleSystem.rotation.x = time * 0.25;
|
|
particleSystem.rotation.y = time * 0.5;
|
|
|
|
renderer.render( scene, camera );
|
|
|
|
}
|
|
|
|
</script>
|
|
|
|
</body>
|
|
</html>
|