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242 lines
5.9 KiB
242 lines
5.9 KiB
<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js software - lines - splines</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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#info {
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position: absolute;
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top: 10px; width: 100%;
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color: #ffffff;
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padding: 5px;
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font-family: Monospace;
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font-size: 13px;
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text-align: center;
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z-index:100;
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}
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a {
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color: orange;
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text-decoration: none;
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}
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a:hover {
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color: #0080ff;
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}
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</style>
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</head>
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<body>
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<div id="info">
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<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - splines Software demo
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[<a href="http://en.wikipedia.org/wiki/Hilbert_curve">Hilbert curve</a> thanks to <a href="http://www.openprocessing.org/visuals/?visualID=15599">Thomas Diewald</a>]
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</div>
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<script src="../build/three.js"></script>
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<script src="js/geometries/hilbert3D.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script src="js/renderers/Projector.js"></script>
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<script src="js/renderers/SoftwareRenderer.js"></script>
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<script>
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var mouseX = 0, mouseY = 0,
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windowHalfX = window.innerWidth / 2,
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windowHalfY = window.innerHeight / 2,
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camera, scene, renderer, material, stats;
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init();
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animate();
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function init() {
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var container = document.createElement( 'div' );
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document.body.appendChild( container );
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camera = new THREE.PerspectiveCamera( 33, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.z = 700;
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scene = new THREE.Scene();
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renderer = new THREE.SoftwareRenderer();
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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//
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var hilbertPoints = hilbert3D( new THREE.Vector3( 0, 0, 0 ), 200.0, 1, 0, 1, 2, 3, 4, 5, 6, 7 );
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var geometry1 = new THREE.BufferGeometry();
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var geometry2 = new THREE.BufferGeometry();
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var geometry3 = new THREE.BufferGeometry();
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var subdivisions = 6;
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var vertices = [];
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var colors1 = [];
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var colors2 = [];
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var colors3 = [];
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var point = new THREE.Vector3();
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var color = new THREE.Color();
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var spline = new THREE.CatmullRomCurve3( hilbertPoints );
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for ( var i = 0; i < hilbertPoints.length * subdivisions; i ++ ) {
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var t = i / ( hilbertPoints.length * subdivisions );
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spline.getPoint( t, point );
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vertices.push( point.x, point.y, point.z );
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color.setHSL( 0.6, 1.0, Math.max( 0, - point.x / 200 ) + 0.5 );
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colors1.push( color.r, color.g, color.b );
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color.setHSL( 0.9, 1.0, Math.max( 0, - point.y / 200 ) + 0.5 );
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colors2.push( color.r, color.g, color.b );
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color.setHSL( i / ( hilbertPoints.length * subdivisions ), 1.0, 0.5 );
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colors3.push( color.r, color.g, color.b );
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}
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geometry1.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
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geometry2.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
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geometry3.addAttribute( 'position', new THREE.Float32BufferAttribute( vertices, 3 ) );
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geometry1.addAttribute( 'color', new THREE.Float32BufferAttribute( colors1, 3 ) );
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geometry2.addAttribute( 'color', new THREE.Float32BufferAttribute( colors2, 3 ) );
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geometry3.addAttribute( 'color', new THREE.Float32BufferAttribute( colors3, 3 ) );
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// lines
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material = new THREE.LineBasicMaterial( { color: 0xffffff, opacity: 1, linewidth: 3, vertexColors: THREE.VertexColors } );
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var line, p, scale = 0.3, d = 225;
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var parameters = [
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[ material, scale * 1.5, [ - d, 0, 0 ], geometry1 ],
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[ material, scale * 1.5, [ 0, 0, 0 ], geometry2 ],
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[ material, scale * 1.5, [ d, 0, 0 ], geometry3 ]
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];
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for ( var i = 0; i < parameters.length; ++ i ) {
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p = parameters[ i ];
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line = new THREE.Line( p[ 3 ], p[ 0 ] );
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line.scale.x = line.scale.y = line.scale.z = p[ 1 ];
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line.position.x = p[ 2 ][ 0 ];
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line.position.y = p[ 2 ][ 1 ];
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line.position.z = p[ 2 ][ 2 ];
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scene.add( line );
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}
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stats = new Stats();
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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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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 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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function animate() {
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requestAnimationFrame( animate );
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render();
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}
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function render() {
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camera.position.x += ( mouseX - camera.position.x ) * .05;
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camera.position.y += ( - mouseY + 200 - camera.position.y ) * .05;
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camera.lookAt( scene.position );
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var time = Date.now() * 0.0005;
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for ( var i = 0; i < scene.children.length; i ++ ) {
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var object = scene.children[ i ];
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if ( object instanceof THREE.Line ) {
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object.rotation.y = time * ( i % 2 ? 1 : - 1 );
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}
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}
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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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