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webgl_lines_sphere.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - lines - spheres</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 {
background-color: #000;
margin: 0px;
overflow: hidden;
}
a {
color:#0078ff;
}
#info {
position: absolute;
top: 10px; width: 100%;
color: #ffffff;
padding: 5px;
font-family: Monospace;
font-size: 13px;
text-align: center;
z-index:100;
}
a {
color: #ff0080;
text-decoration: none;
}
a:hover {
color: #0080ff;
}
</style>
</head>
<body>
<div id="info">
<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - lines WebGL demo
</div>
<script src="../build/three.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var SCREEN_WIDTH = window.innerWidth,
SCREEN_HEIGHT = window.innerHeight,
r = 450,
mouseX = 0, mouseY = 0,
windowHalfX = window.innerWidth / 2,
windowHalfY = window.innerHeight / 2,
camera, scene, renderer;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera( 80, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 3000 );
camera.position.z = 1000;
scene = new THREE.Scene();
var i, line, vertex1, vertex2, material, p,
parameters = [ [ 0.25, 0xff7700, 1, 2 ], [ 0.5, 0xff9900, 1, 1 ], [ 0.75, 0xffaa00, 0.75, 1 ], [ 1, 0xffaa00, 0.5, 1 ], [ 1.25, 0x000833, 0.8, 1 ],
[ 3.0, 0xaaaaaa, 0.75, 2 ], [ 3.5, 0xffffff, 0.5, 1 ], [ 4.5, 0xffffff, 0.25, 1 ], [ 5.5, 0xffffff, 0.125, 1 ] ];
var geometry = createGeometry();
for( i = 0; i < parameters.length; ++ i ) {
p = parameters[ i ];
material = new THREE.LineBasicMaterial( { color: p[ 1 ], opacity: p[ 2 ], linewidth: p[ 3 ] } );
line = new THREE.LineSegments( geometry, material );
line.scale.x = line.scale.y = line.scale.z = p[ 0 ];
line.userData.originalScale = p[ 0 ];
line.rotation.y = Math.random() * Math.PI;
line.updateMatrix();
scene.add( line );
}
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
document.body.appendChild( renderer.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
//
window.addEventListener( 'resize', onWindowResize, false );
// test geometry swapability
setInterval( function () {
var geometry = createGeometry();
scene.traverse( function ( object ) {
if ( object.isLine ) {
object.geometry.dispose();
object.geometry = geometry;
}
} );
}, 1000 );
}
function createGeometry() {
var geometry = new THREE.BufferGeometry();
var vertices = [];
var vertex = new THREE.Vector3();
for ( var i = 0; i < 1500; i ++ ) {
vertex.x = Math.random() * 2 - 1;
vertex.y = Math.random() * 2 - 1;
vertex.z = Math.random() * 2 - 1;
vertex.normalize();
vertex.multiplyScalar( r );
vertices.push( vertex.x, vertex.y, vertex.z );
vertex.multiplyScalar( Math.random() * 0.09 + 1 );
vertices.push( vertex.x, vertex.y, vertex.z );
}
geometry.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
return geometry;
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove( event ) {
mouseX = event.clientX - windowHalfX;
mouseY = event.clientY - windowHalfY;
}
function onDocumentTouchStart( event ) {
if ( event.touches.length > 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
mouseY = event.touches[ 0 ].pageY - windowHalfY;
}
}
function onDocumentTouchMove( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
mouseY = event.touches[ 0 ].pageY - windowHalfY;
}
}
//
function animate() {
requestAnimationFrame( animate );
render();
}
function render() {
camera.position.y += ( - mouseY + 200 - camera.position.y ) * .05;
camera.lookAt( scene.position );
renderer.render( scene, camera );
var time = Date.now() * 0.0001;
for ( var i = 0; i < scene.children.length; i ++ ) {
var object = scene.children[ i ];
if ( object.isLine ) {
object.rotation.y = time * ( i < 4 ? ( i + 1 ) : - ( i + 1 ) );
if ( i < 5 ) {
var scale = object.userData.originalScale * ( i / 5 + 1 ) * ( 1 + 0.5 * Math.sin( 7 * time ) );
object.scale.x = object.scale.y = object.scale.z = scale;
}
}
}
}
</script>
</body>
</html>