mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-26 23:44:56 +01:00
243 lines
5.0 KiB
HTML
243 lines
5.0 KiB
HTML
|
<!doctype html>
|
||
|
<html lang="en">
|
||
|
<head>
|
||
|
<title>three.js webgl - interactive 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: #ffffff;
|
||
|
background-color: #000000;
|
||
|
margin: 0px;
|
||
|
overflow: hidden;
|
||
|
}
|
||
|
#info {
|
||
|
position: absolute;
|
||
|
top: 0px;
|
||
|
width: 100%;
|
||
|
padding: 5px;
|
||
|
font-family: Monospace;
|
||
|
font-size: 13px;
|
||
|
text-align: center;
|
||
|
font-weight: bold;
|
||
|
}
|
||
|
a {
|
||
|
color: #fff;
|
||
|
}
|
||
|
</style>
|
||
|
</head>
|
||
|
|
||
|
<body>
|
||
|
<div id="container"></div>
|
||
|
<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> webgl - interactive - particles</div>
|
||
|
|
||
|
<script src="../build/three.min.js"></script>
|
||
|
|
||
|
<script src="js/Detector.js"></script>
|
||
|
<script src="js/libs/stats.min.js"></script>
|
||
|
|
||
|
<script type="x-shader/x-vertex" id="vertexshader">
|
||
|
|
||
|
attribute float size;
|
||
|
attribute vec3 customColor;
|
||
|
|
||
|
varying vec3 vColor;
|
||
|
|
||
|
void main() {
|
||
|
|
||
|
vColor = customColor;
|
||
|
|
||
|
vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
|
||
|
|
||
|
gl_PointSize = size * ( 300.0 / length( mvPosition.xyz ) );
|
||
|
|
||
|
gl_Position = projectionMatrix * mvPosition;
|
||
|
|
||
|
}
|
||
|
|
||
|
</script>
|
||
|
|
||
|
<script type="x-shader/x-fragment" id="fragmentshader">
|
||
|
|
||
|
uniform vec3 color;
|
||
|
uniform sampler2D texture;
|
||
|
|
||
|
varying vec3 vColor;
|
||
|
|
||
|
void main() {
|
||
|
|
||
|
gl_FragColor = vec4( color * vColor, 1.0 );
|
||
|
|
||
|
gl_FragColor = gl_FragColor * texture2D( texture, gl_PointCoord );
|
||
|
|
||
|
if ( gl_FragColor.a < ALPHATEST ) discard;
|
||
|
|
||
|
}
|
||
|
|
||
|
</script>
|
||
|
|
||
|
|
||
|
<script>
|
||
|
|
||
|
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
|
||
|
|
||
|
var renderer, scene, camera, stats;
|
||
|
|
||
|
var particles, uniforms, attributes;
|
||
|
|
||
|
var PARTICLE_SIZE = 20;
|
||
|
|
||
|
var raycaster, intersects;
|
||
|
var mouse, INTERSECTED;
|
||
|
|
||
|
init();
|
||
|
animate();
|
||
|
|
||
|
function init() {
|
||
|
|
||
|
container = document.getElementById( 'container' );
|
||
|
|
||
|
scene = new THREE.Scene();
|
||
|
|
||
|
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
|
||
|
camera.position.z = 250;
|
||
|
|
||
|
//
|
||
|
|
||
|
attributes = {
|
||
|
|
||
|
size: { type: 'f', value: [] },
|
||
|
customColor: { type: 'c', value: [] }
|
||
|
|
||
|
};
|
||
|
|
||
|
uniforms = {
|
||
|
|
||
|
color: { type: "c", value: new THREE.Color( 0xffffff ) },
|
||
|
texture: { type: "t", value: THREE.ImageUtils.loadTexture( "textures/sprites/disc.png" ) }
|
||
|
|
||
|
};
|
||
|
|
||
|
var shaderMaterial = new THREE.ShaderMaterial( {
|
||
|
|
||
|
uniforms: uniforms,
|
||
|
attributes: attributes,
|
||
|
vertexShader: document.getElementById( 'vertexshader' ).textContent,
|
||
|
fragmentShader: document.getElementById( 'fragmentshader' ).textContent,
|
||
|
|
||
|
alphaTest: 0.9,
|
||
|
|
||
|
} );
|
||
|
|
||
|
var geometry = new THREE.BoxGeometry( 200, 200, 200, 16, 16, 16 );
|
||
|
|
||
|
particles = new THREE.PointCloud( geometry, shaderMaterial );
|
||
|
|
||
|
var values_size = attributes.size.value;
|
||
|
var values_color = attributes.customColor.value;
|
||
|
|
||
|
var vertices = particles.geometry.vertices;
|
||
|
|
||
|
for( var v = 0, vl = vertices.length; v < vl; v++ ) {
|
||
|
|
||
|
values_size[ v ] = PARTICLE_SIZE * 0.5;
|
||
|
|
||
|
values_color[ v ] = new THREE.Color().setHSL( 0.01 + 0.1 * ( v / vl ), 1.0, 0.5 );
|
||
|
|
||
|
}
|
||
|
|
||
|
scene.add( particles );
|
||
|
|
||
|
//
|
||
|
|
||
|
renderer = new THREE.WebGLRenderer();
|
||
|
renderer.setPixelRatio( window.devicePixelRatio );
|
||
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
||
|
container.appendChild( renderer.domElement );
|
||
|
|
||
|
//
|
||
|
|
||
|
raycaster = new THREE.Raycaster();
|
||
|
mouse = new THREE.Vector2()
|
||
|
|
||
|
//
|
||
|
|
||
|
stats = new Stats();
|
||
|
stats.domElement.style.position = 'absolute';
|
||
|
stats.domElement.style.top = '0px';
|
||
|
container.appendChild( stats.domElement );
|
||
|
|
||
|
//
|
||
|
|
||
|
window.addEventListener( 'resize', onWindowResize, false );
|
||
|
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
|
||
|
|
||
|
}
|
||
|
|
||
|
function onDocumentMouseMove( event ) {
|
||
|
|
||
|
event.preventDefault();
|
||
|
|
||
|
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
|
||
|
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
|
||
|
|
||
|
}
|
||
|
|
||
|
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() {
|
||
|
|
||
|
particles.rotation.x += 0.0005;
|
||
|
particles.rotation.y += 0.001;
|
||
|
|
||
|
raycaster.setFromCamera( mouse, camera );
|
||
|
|
||
|
intersects = raycaster.intersectObject( particles );
|
||
|
|
||
|
if ( intersects.length > 0 ) {
|
||
|
|
||
|
if ( INTERSECTED != intersects[ 0 ].index ) {
|
||
|
|
||
|
attributes.size.value[ INTERSECTED ] = PARTICLE_SIZE;
|
||
|
|
||
|
INTERSECTED = intersects[ 0 ].index;
|
||
|
|
||
|
attributes.size.value[ INTERSECTED ] = PARTICLE_SIZE * 1.25;
|
||
|
attributes.size.needsUpdate = true;
|
||
|
|
||
|
}
|
||
|
|
||
|
} else if ( INTERSECTED !== null ) {
|
||
|
|
||
|
attributes.size.value[ INTERSECTED ] = PARTICLE_SIZE;
|
||
|
attributes.size.needsUpdate = true;
|
||
|
INTERSECTED = null;
|
||
|
|
||
|
}
|
||
|
|
||
|
renderer.render( scene, camera );
|
||
|
|
||
|
}
|
||
|
|
||
|
</script>
|
||
|
|
||
|
</body>
|
||
|
|
||
|
</html>
|