mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-16 19:17:57 +01:00
229 lines
4.7 KiB
HTML
229 lines
4.7 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>three.js webgl - custom attributes [particles][billboards]</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</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 vec3 ca;
|
||
|
|
|
||
|
|
varying vec3 vColor;
|
||
|
|
|
||
|
|
void main() {
|
||
|
|
|
||
|
|
vColor = ca;
|
||
|
|
|
||
|
|
vec4 mvPosition = modelViewMatrix * vec4( position, 1.0 );
|
||
|
|
|
||
|
|
//gl_PointSize = size;
|
||
|
|
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() {
|
||
|
|
|
||
|
|
vec4 color = vec4( color * vColor, 1.0 ) * texture2D( texture, gl_PointCoord );
|
||
|
|
|
||
|
|
if ( color.w < 0.5 ) discard;
|
||
|
|
|
||
|
|
gl_FragColor = color;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
|
||
|
|
<script>
|
||
|
|
|
||
|
|
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
|
||
|
|
|
||
|
|
var renderer, scene, camera, stats;
|
||
|
|
|
||
|
|
var sphere, uniforms, attributes;
|
||
|
|
|
||
|
|
var vc1;
|
||
|
|
|
||
|
|
var WIDTH = window.innerWidth;
|
||
|
|
var HEIGHT = window.innerHeight;
|
||
|
|
|
||
|
|
init();
|
||
|
|
animate();
|
||
|
|
|
||
|
|
function init() {
|
||
|
|
|
||
|
|
camera = new THREE.PerspectiveCamera( 45, WIDTH / HEIGHT, 1, 10000 );
|
||
|
|
camera.position.z = 300;
|
||
|
|
|
||
|
|
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/disc.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,
|
||
|
|
transparent: true
|
||
|
|
|
||
|
|
});
|
||
|
|
|
||
|
|
|
||
|
|
var radius = 100, segments = 68, rings = 38;
|
||
|
|
var geometry = new THREE.SphereGeometry( radius, segments, rings );
|
||
|
|
|
||
|
|
vc1 = geometry.vertices.length;
|
||
|
|
|
||
|
|
var geometry2 = new THREE.BoxGeometry( 0.8 * radius, 0.8 * radius, 0.8 * radius, 10, 10, 10 );
|
||
|
|
geometry.merge( geometry2 );
|
||
|
|
|
||
|
|
sphere = new THREE.PointCloud( geometry, shaderMaterial );
|
||
|
|
|
||
|
|
var vertices = sphere.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( 0.01 + 0.1 * ( v / vc1 ), 0.99, ( vertices[ v ].y + radius ) / ( 4 * radius ) );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
values_size[ v ] = 40;
|
||
|
|
values_color[ v ].setHSL( 0.6, 0.75, 0.25 + vertices[ v ].y / ( 2 * radius ) );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
scene.add( sphere );
|
||
|
|
|
||
|
|
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() * 0.005;
|
||
|
|
|
||
|
|
sphere.rotation.y = 0.02 * time;
|
||
|
|
sphere.rotation.z = 0.02 * time;
|
||
|
|
|
||
|
|
for( var i = 0; i < attributes.size.value.length; i ++ ) {
|
||
|
|
|
||
|
|
if ( i < vc1 )
|
||
|
|
attributes.size.value[ i ] = 16 + 12 * Math.sin( 0.1 * i + time );
|
||
|
|
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
attributes.size.needsUpdate = true;
|
||
|
|
|
||
|
|
renderer.render( scene, camera );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
|
||
|
|
</html>
|