mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-14 02:07:56 +01:00
289 lines
6.2 KiB
HTML
Executable File
289 lines
6.2 KiB
HTML
Executable File
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<title>three.js webgl - custom attributes [particles][billboards][alphatest]</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;
|
|
font-family:Monospace;
|
|
font-size:13px;
|
|
text-align:center;
|
|
font-weight: bold;
|
|
|
|
background-color: #000000;
|
|
margin: 0px;
|
|
overflow: hidden;
|
|
}
|
|
#info {
|
|
color: #fff;
|
|
position: absolute;
|
|
top: 0px; width: 100%;
|
|
padding: 5px;
|
|
z-index:100;
|
|
}
|
|
|
|
</style>
|
|
</head>
|
|
|
|
<body>
|
|
<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - custom attributes example - particles - billboards - alphatest</div>
|
|
<div id="container"></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 vec4 ca;
|
|
|
|
varying vec4 vColor;
|
|
|
|
void main() {
|
|
|
|
vColor = ca;
|
|
|
|
vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
|
|
|
|
gl_PointSize = size * ( 150.0 / length( mvPosition.xyz ) );
|
|
|
|
gl_Position = projectionMatrix * mvPosition;
|
|
|
|
}
|
|
|
|
</script>
|
|
|
|
<script type="x-shader/x-fragment" id="fragmentshader">
|
|
|
|
uniform vec3 color;
|
|
uniform sampler2D texture;
|
|
|
|
varying vec4 vColor;
|
|
|
|
void main() {
|
|
|
|
vec4 outColor = texture2D( texture, gl_PointCoord );
|
|
|
|
if ( outColor.a < 0.5 ) discard;
|
|
|
|
gl_FragColor = outColor * vec4( color * vColor.xyz, 1.0 );
|
|
|
|
float depth = gl_FragCoord.z / gl_FragCoord.w;
|
|
const vec3 fogColor = vec3( 0.0 );
|
|
|
|
float fogFactor = smoothstep( 200.0, 600.0, depth );
|
|
gl_FragColor = mix( gl_FragColor, vec4( fogColor, gl_FragColor.w ), fogFactor );
|
|
|
|
}
|
|
|
|
</script>
|
|
|
|
|
|
<script>
|
|
|
|
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
|
|
|
|
var renderer, scene, camera, stats;
|
|
|
|
var object, uniforms, attributes;
|
|
|
|
var vc1;
|
|
|
|
var WIDTH = window.innerWidth;
|
|
var HEIGHT = window.innerHeight;
|
|
|
|
init();
|
|
animate();
|
|
|
|
function init() {
|
|
|
|
camera = new THREE.PerspectiveCamera( 40, WIDTH / HEIGHT, 1, 1000 );
|
|
camera.position.z = 500;
|
|
|
|
scene = new THREE.Scene();
|
|
|
|
attributes = {
|
|
|
|
size: { type: 'f', value: [] },
|
|
ca: { type: 'c', value: [] }
|
|
|
|
};
|
|
|
|
uniforms = {
|
|
|
|
amplitude: { type: "f", value: 1.0 },
|
|
color: { type: "c", value: new THREE.Color( 0xffffff ) },
|
|
texture: { type: "t", value: THREE.ImageUtils.loadTexture( "textures/sprites/ball.png" ) },
|
|
|
|
};
|
|
|
|
uniforms.texture.value.wrapS = uniforms.texture.value.wrapT = THREE.RepeatWrapping;
|
|
|
|
var shaderMaterial = new THREE.ShaderMaterial( {
|
|
|
|
uniforms: uniforms,
|
|
attributes: attributes,
|
|
vertexShader: document.getElementById( 'vertexshader' ).textContent,
|
|
fragmentShader: document.getElementById( 'fragmentshader' ).textContent
|
|
|
|
});
|
|
|
|
|
|
var radius = 100, inner = 0.6 * radius;
|
|
var geometry = new THREE.Geometry();
|
|
|
|
for ( var i = 0; i < 100000; i ++ ) {
|
|
|
|
var vertex = new THREE.Vector3();
|
|
vertex.x = Math.random() * 2 - 1;
|
|
vertex.y = Math.random() * 2 - 1;
|
|
vertex.z = Math.random() * 2 - 1;
|
|
vertex.multiplyScalar( radius );
|
|
|
|
if ( ( vertex.x > inner || vertex.x < -inner ) ||
|
|
( vertex.y > inner || vertex.y < -inner ) ||
|
|
( vertex.z > inner || vertex.z < -inner ) )
|
|
|
|
geometry.vertices.push( vertex );
|
|
|
|
}
|
|
|
|
vc1 = geometry.vertices.length;
|
|
|
|
radius = 200;
|
|
var geometry2 = new THREE.BoxGeometry( radius, 0.1 * radius, 0.1 * radius, 50, 5, 5 );
|
|
|
|
function addGeo( geo, x, y, z, ry ) {
|
|
|
|
var mesh = new THREE.Mesh( geo );
|
|
mesh.position.set( x, y, z );
|
|
mesh.rotation.y = ry;
|
|
mesh.updateMatrix();
|
|
|
|
geometry.merge( mesh.geometry, mesh.matrix );
|
|
|
|
}
|
|
|
|
// side 1
|
|
|
|
addGeo( geometry2, 0, 110, 110, 0 );
|
|
addGeo( geometry2, 0, 110, -110, 0 );
|
|
addGeo( geometry2, 0, -110, 110, 0 );
|
|
addGeo( geometry2, 0, -110, -110, 0 );
|
|
|
|
// side 2
|
|
|
|
addGeo( geometry2, 110, 110, 0, Math.PI/2 );
|
|
addGeo( geometry2, 110, -110, 0, Math.PI/2 );
|
|
addGeo( geometry2, -110, 110, 0, Math.PI/2 );
|
|
addGeo( geometry2, -110, -110, 0, Math.PI/2 );
|
|
|
|
// corner edges
|
|
|
|
var geometry3 = new THREE.BoxGeometry( 0.1 * radius, radius * 1.2, 0.1 * radius, 5, 60, 5 );
|
|
|
|
addGeo( geometry3, 110, 0, 110, 0 );
|
|
addGeo( geometry3, 110, 0, -110, 0 );
|
|
addGeo( geometry3, -110, 0, 110, 0 );
|
|
addGeo( geometry3, -110, 0, -110, 0 );
|
|
|
|
// particle system
|
|
|
|
object = new THREE.PointCloud( geometry, shaderMaterial );
|
|
|
|
// custom attributes
|
|
|
|
var vertices = object.geometry.vertices;
|
|
|
|
var values_size = attributes.size.value;
|
|
var values_color = attributes.ca.value;
|
|
|
|
for ( var v = 0; v < vertices.length; v ++ ) {
|
|
|
|
values_size[ v ] = 10;
|
|
values_color[ v ] = new THREE.Color( 0xffffff );
|
|
|
|
if ( v < vc1 ) {
|
|
|
|
values_color[ v ].setHSL( 0.5 + 0.2 * ( v / vc1 ), 1, 0.5 );
|
|
|
|
} else {
|
|
|
|
values_size[ v ] = 55;
|
|
values_color[ v ].setHSL( 0.1, 1, 0.5 );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
//console.log( vertices.length );
|
|
|
|
scene.add( object );
|
|
|
|
renderer = new THREE.WebGLRenderer();
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
|
renderer.setSize( WIDTH, HEIGHT );
|
|
|
|
var container = document.getElementById( 'container' );
|
|
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() * 0.01;
|
|
|
|
object.rotation.y = object.rotation.z = 0.02 * time;
|
|
|
|
for( var i = 0; i < attributes.size.value.length; i ++ ) {
|
|
|
|
if ( i < vc1 )
|
|
attributes.size.value[ i ] = Math.max(0, 26 + 32 * Math.sin( 0.1 * i + 0.6 * time ));
|
|
|
|
|
|
}
|
|
|
|
attributes.size.needsUpdate = true;
|
|
|
|
renderer.render( scene, camera );
|
|
|
|
}
|
|
|
|
|
|
</script>
|
|
|
|
</body>
|
|
|
|
</html>
|