mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-30 01:14:57 +01:00
204 lines
4.7 KiB
HTML
204 lines
4.7 KiB
HTML
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js canvas - particles - sprites</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<style>
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body {
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background-color: #000000;
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margin: 0px;
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overflow: hidden;
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}
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a {
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color:#0078ff;
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}
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</style>
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</head>
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<body>
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<script src="../build/three.min.js"></script>
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<script src="js/renderers/Projector.js"></script>
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<script src="js/renderers/CanvasRenderer.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script src="js/libs/tween.min.js"></script>
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<script>
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var container, stats;
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var camera, scene, renderer, particle;
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var mouseX = 0, mouseY = 0;
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var windowHalfX = window.innerWidth / 2;
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var windowHalfY = window.innerHeight / 2;
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init();
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animate();
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 1, 5000 );
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camera.position.z = 1000;
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scene = new THREE.Scene();
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var material = new THREE.SpriteMaterial( {
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map: new THREE.Texture( generateSprite() ),
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blending: THREE.AdditiveBlending
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} );
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for ( var i = 0; i < 1000; i++ ) {
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particle = new THREE.Sprite( material );
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initParticle( particle, i * 10 );
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scene.add( particle );
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}
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renderer = new THREE.CanvasRenderer();
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renderer.setClearColor( 0x000040 );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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stats = new Stats();
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stats.domElement.style.position = 'absolute';
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stats.domElement.style.top = '0px';
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container.appendChild( stats.domElement );
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document.addEventListener( 'mousemove', onDocumentMouseMove, false );
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document.addEventListener( 'touchstart', onDocumentTouchStart, false );
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document.addEventListener( 'touchmove', onDocumentTouchMove, false );
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//
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window.addEventListener( 'resize', onWindowResize, false );
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}
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function onWindowResize() {
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windowHalfX = window.innerWidth / 2;
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windowHalfY = window.innerHeight / 2;
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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}
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function generateSprite() {
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var canvas = document.createElement( 'canvas' );
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canvas.width = 16;
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canvas.height = 16;
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var context = canvas.getContext( '2d' );
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var gradient = context.createRadialGradient( canvas.width / 2, canvas.height / 2, 0, canvas.width / 2, canvas.height / 2, canvas.width / 2 );
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gradient.addColorStop( 0, 'rgba(255,255,255,1)' );
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gradient.addColorStop( 0.2, 'rgba(0,255,255,1)' );
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gradient.addColorStop( 0.4, 'rgba(0,0,64,1)' );
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gradient.addColorStop( 1, 'rgba(0,0,0,1)' );
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context.fillStyle = gradient;
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context.fillRect( 0, 0, canvas.width, canvas.height );
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return canvas;
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}
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function initParticle( particle, delay ) {
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var particle = this instanceof THREE.Sprite ? this : particle;
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var delay = delay !== undefined ? delay : 0;
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particle.position.set( 0, 0, 0 )
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particle.scale.x = particle.scale.y = Math.random() * 32 + 16;
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new TWEEN.Tween( particle )
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.delay( delay )
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.to( {}, 10000 )
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.onComplete( initParticle )
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.start();
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new TWEEN.Tween( particle.position )
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.delay( delay )
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.to( { x: Math.random() * 4000 - 2000, y: Math.random() * 1000 - 500, z: Math.random() * 4000 - 2000 }, 10000 )
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.start();
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new TWEEN.Tween( particle.scale )
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.delay( delay )
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.to( { x: 0, y: 0 }, 10000 )
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.start();
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}
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//
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function onDocumentMouseMove( event ) {
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mouseX = event.clientX - windowHalfX;
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mouseY = event.clientY - windowHalfY;
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}
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function onDocumentTouchStart( event ) {
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if ( event.touches.length == 1 ) {
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event.preventDefault();
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mouseX = event.touches[ 0 ].pageX - windowHalfX;
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mouseY = event.touches[ 0 ].pageY - windowHalfY;
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}
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}
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function onDocumentTouchMove( event ) {
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if ( event.touches.length == 1 ) {
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event.preventDefault();
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mouseX = event.touches[ 0 ].pageX - windowHalfX;
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mouseY = event.touches[ 0 ].pageY - windowHalfY;
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}
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}
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//
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function animate() {
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requestAnimationFrame( animate );
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render();
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stats.update();
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}
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function render() {
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TWEEN.update();
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camera.position.x += ( mouseX - camera.position.x ) * 0.05;
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camera.position.y += ( - mouseY - camera.position.y ) * 0.05;
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camera.lookAt( scene.position );
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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