Doodle3D-Slicer/three.js-master/examples/webgl_custom_attributes_lines.html
2015-06-12 15:58:26 +02:00

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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - custom attributes [lines]</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</div>
<div id="container"></div>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script src="../build/three.min.js"></script>
<script src="fonts/helvetiker_bold.typeface.js"></script>
<script type="x-shader/x-vertex" id="vertexshader">
uniform float amplitude;
attribute vec3 displacement;
attribute vec3 customColor;
varying vec3 vColor;
void main() {
vec3 newPosition = position + amplitude * displacement;
vColor = customColor;
gl_Position = projectionMatrix * modelViewMatrix * vec4( newPosition, 1.0 );
}
</script>
<script type="x-shader/x-fragment" id="fragmentshader">
uniform vec3 color;
uniform float opacity;
varying vec3 vColor;
void main() {
gl_FragColor = vec4( vColor * color, opacity );
}
</script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var renderer, scene, camera, stats;
var object, uniforms, attributes;
var text = "three.js",
height = 15,
size = 50,
curveSegments = 10,
steps = 40,
bevelThickness = 5,
bevelSize = 1.5,
bevelSegments = 10,
bevelEnabled = true,
font = "helvetiker", // helvetiker, optimer, gentilis, droid sans, droid serif
weight = "bold", // normal bold
style = "normal"; // normal italic
var WIDTH = window.innerWidth,
HEIGHT = window.innerHeight;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 30, WIDTH / HEIGHT, 1, 10000 );
camera.position.z = 400;
scene = new THREE.Scene();
attributes = {
displacement: { type: 'v3', value: [] },
customColor: { type: 'c', value: [] }
};
uniforms = {
amplitude: { type: "f", value: 5.0 },
opacity: { type: "f", value: 0.3 },
color: { type: "c", value: new THREE.Color( 0xff0000 ) }
};
var shaderMaterial = new THREE.ShaderMaterial( {
uniforms: uniforms,
attributes: attributes,
vertexShader: document.getElementById( 'vertexshader' ).textContent,
fragmentShader: document.getElementById( 'fragmentshader' ).textContent,
blending: THREE.AdditiveBlending,
depthTest: false,
transparent: true
});
shaderMaterial.linewidth = 1;
geometry = new THREE.TextGeometry( text, {
size: size,
height: height,
curveSegments: curveSegments,
font: font,
weight: weight,
style: style,
bevelThickness: bevelThickness,
bevelSize: bevelSize,
bevelEnabled: bevelEnabled,
bevelSegments: bevelSegments,
steps: steps
});
geometry.dynamic = true;
geometry.center();
object = new THREE.Line( geometry, shaderMaterial, THREE.LineStrip );
var vertices = object.geometry.vertices;
var displacement = attributes.displacement.value;
var color = attributes.customColor.value;
for( var v = 0; v < vertices.length; v ++ ) {
displacement[ v ] = new THREE.Vector3();
color[ v ] = new THREE.Color( 0xffffff );
color[ v ].setHSL( v / vertices.length, 0.5, 0.5 );
}
object.rotation.x = 0.2;
scene.add( object );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setClearColor( 0x050505 );
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() * 0.001;
object.rotation.y = 0.25 * time;
uniforms.amplitude.value = 0.5 * Math.sin( 0.5 * time );
uniforms.color.value.offsetHSL( 0.0005, 0, 0 );
var nx, ny, nz, value;
for( var i = 0, il = attributes.displacement.value.length; i < il; i ++ ) {
nx = 0.3 * ( 0.5 - Math.random() );
ny = 0.3 * ( 0.5 - Math.random() );
nz = 0.3 * ( 0.5 - Math.random() );
value = attributes.displacement.value[ i ];
value.x += nx;
value.y += ny;
value.z += nz;
}
attributes.displacement.needsUpdate = true;
renderer.render( scene, camera );
}
</script>
</body>
</html>