mirror of
https://github.com/wahyd4/three.js.git
synced 2026-08-17 17:05:57 +10:00
alteredq
be875f2267
Spline control points shouldn't be cycled, this produces freaky behaviors near start and end of path. Instead they have to be capped. Also did some refactoring.
358 lines
10 KiB
HTML
358 lines
10 KiB
HTML
<!DOCTYPE HTML>
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<html lang="en">
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<head>
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<title>three.js webgl - lines - splines</title>
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<meta charset="utf-8">
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<style type="text/css">
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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://github.com/mrdoob/three.js" target="_blank">three.js</a> - splines WebGL 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 type="text/javascript" src="../build/Three.js"></script>
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<script type="text/javascript" src="js/Detector.js"></script>
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<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
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<script type="text/javascript" src="js/Stats.js"></script>
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<script type="text/javascript">
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if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
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var postprocessing = false;
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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;
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var cameraOrtho, sceneScreen, rtTexture1, rtTexture2, rtTexture3, materialScreen, materialConvolution, blurx, blury, quadScreen;
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init();
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animate();
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function init() {
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var i, n_sub, container;
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container = document.createElement('div');
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document.body.appendChild(container);
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camera = new THREE.Camera( 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.WebGLRenderer();
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renderer.setSize( window.innerWidth, window.innerHeight );
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renderer.autoClear = false;
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container.appendChild( renderer.domElement );
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var geometry = new THREE.Geometry(),
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geometry2 = new THREE.Geometry(),
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geometry3 = new THREE.Geometry(),
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points = hilbert3D( new THREE.Vector3( 0,0,0 ), 200.0, 1, 0, 1, 2, 3, 4, 5, 6, 7 ),
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colors = [], colors2 = [], colors3 = [];
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n_sub = 6;
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var position, index;
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var spline = new THREE.Spline();
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for ( i = 0; i < points.length * n_sub; i ++ ) {
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index = i / ( points.length * n_sub );
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position = spline.getPoint( points, index );
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geometry.vertices[ i ] = new THREE.Vertex( new THREE.Vector3( position.x, position.y, position.z ) );
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colors[ i ] = new THREE.Color( 0xffffff );
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colors[ i ].setHSV( 0.6, ( 200 + position.x ) / 400, 1.0 );
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colors2[ i ] = new THREE.Color( 0xffffff );
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//colors2[ i ].setHSV( 0.1, 1.0, ( 200 + position.x ) / 400 );
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colors2[ i ].setHSV( 0.9, ( 200 + position.y ) / 400, 1.0 );
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colors3[ i ] = new THREE.Color( 0xffffff );
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colors3[ i ].setHSV( i / ( points.length * n_sub ), 1.0, 1.0 );
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}
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geometry2.vertices = geometry3.vertices = geometry.vertices;
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geometry.colors = colors;
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geometry2.colors = colors2;
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geometry3.colors = colors3;
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// lines
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material = new THREE.LineBasicMaterial( { color: 0xffffff, opacity: 1, linewidth: 3 } );
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var line, p, scale = 0.3, d = 225,
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parameters = [ [ material, scale*1.5, [-d,0,0], geometry ],
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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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material.vertexColors = true;
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for ( 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.addObject( line );
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}
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// postprocessing
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cameraOrtho = new THREE.Camera();
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cameraOrtho.projectionMatrix = THREE.Matrix4.makeOrtho( window.innerWidth / - 2, window.innerWidth / 2, window.innerHeight / 2, window.innerHeight / - 2, -10000, 10000 );
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cameraOrtho.position.z = 100;
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sceneScreen = new THREE.Scene();
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var pars = { minFilter: THREE.LinearFilter, magFilter: THREE.LinearFilter };
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rtTexture1 = new THREE.RenderTarget( window.innerWidth, window.innerHeight, pars );
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rtTexture2 = new THREE.RenderTarget( 512, 512, pars );
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rtTexture3 = new THREE.RenderTarget( 512, 512, pars );
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var screen_shader = ShaderUtils.lib["screen"];
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var screen_uniforms = Uniforms.clone( screen_shader.uniforms );
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screen_uniforms["tDiffuse"].texture = rtTexture1;
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screen_uniforms["opacity"].value = 1.0;
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materialScreen = new THREE.MeshShaderMaterial( {
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uniforms: screen_uniforms,
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vertexShader: screen_shader.vertexShader,
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fragmentShader: screen_shader.fragmentShader,
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blending: THREE.AdditiveBlending
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} );
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var convolution_shader = ShaderUtils.lib["convolution"];
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var convolution_uniforms = Uniforms.clone( convolution_shader.uniforms );
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blurx = new THREE.Vector2( 0.001953125, 0.0 ),
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blury = new THREE.Vector2( 0.0, 0.001953125 );
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convolution_uniforms["tDiffuse"].texture = rtTexture1;
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convolution_uniforms["uImageIncrement"].value = blurx;
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convolution_uniforms["cKernel"].value = ShaderUtils.buildKernel( 4.0 );
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materialConvolution = new THREE.MeshShaderMaterial( {
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uniforms: convolution_uniforms,
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vertexShader: "#define KERNEL_SIZE 25.0\n" + convolution_shader.vertexShader,
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fragmentShader: "#define KERNEL_SIZE 25\n" + convolution_shader.fragmentShader
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} );
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var plane = new Plane( window.innerWidth, window.innerHeight );
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quadScreen = new THREE.Mesh( plane, materialConvolution );
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quadScreen.position.z = -100;
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sceneScreen.addObject( quadScreen );
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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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// port of Processing Java code by Thomas Diewald
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// http://www.openprocessing.org/visuals/?visualID=15599
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function hilbert3D( center, side, iterations, v0, v1, v2, v3, v4, v5, v6, v7 ) {
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var half = side/2,
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vec_s = [
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new THREE.Vector3( center.x - half, center.y + half, center.z - half ),
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new THREE.Vector3( center.x - half, center.y + half, center.z + half ),
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new THREE.Vector3( center.x - half, center.y - half, center.z + half ),
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new THREE.Vector3( center.x - half, center.y - half, center.z - half ),
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new THREE.Vector3( center.x + half, center.y - half, center.z - half ),
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new THREE.Vector3( center.x + half, center.y - half, center.z + half ),
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new THREE.Vector3( center.x + half, center.y + half, center.z + half ),
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new THREE.Vector3( center.x + half, center.y + half, center.z - half )
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],
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vec = [ vec_s[ v0 ], vec_s[ v1 ], vec_s[ v2 ], vec_s[ v3 ], vec_s[ v4 ], vec_s[ v5 ], vec_s[ v6 ], vec_s[ v7 ] ];
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if( --iterations >= 0 ) {
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var tmp = [];
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tmp = tmp.concat( hilbert3D ( vec[ 0 ], half, iterations, v0, v3, v4, v7, v6, v5, v2, v1 ) );
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tmp = tmp.concat( hilbert3D ( vec[ 1 ], half, iterations, v0, v7, v6, v1, v2, v5, v4, v3 ) );
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tmp = tmp.concat( hilbert3D ( vec[ 2 ], half, iterations, v0, v7, v6, v1, v2, v5, v4, v3 ) );
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tmp = tmp.concat( hilbert3D ( vec[ 3 ], half, iterations, v2, v3, v0, v1, v6, v7, v4, v5 ) );
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tmp = tmp.concat( hilbert3D ( vec[ 4 ], half, iterations, v2, v3, v0, v1, v6, v7, v4, v5 ) );
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tmp = tmp.concat( hilbert3D ( vec[ 5 ], half, iterations, v4, v3, v2, v5, v6, v1, v0, v7 ) );
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tmp = tmp.concat( hilbert3D ( vec[ 6 ], half, iterations, v4, v3, v2, v5, v6, v1, v0, v7 ) );
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tmp = tmp.concat( hilbert3D ( vec[ 7 ], half, iterations, v6, v5, v2, v1, v0, v3, v4, v7 ) );
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return tmp;
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}
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return vec;
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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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}
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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.updateMatrix();
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var time = new Date().getTime() * 0.0005;
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for( var i = 0; i<scene.objects.length; i++ ) {
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scene.objects[i].rotation.y = time * ( i % 2 ? 1 : -1);
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}
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renderer.clear();
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if ( postprocessing ) {
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// Render scene into texture
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renderer.render( scene, camera, rtTexture1 );
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// Render quad with blured scene into texture (convolution pass 1)
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quadScreen.materials = [ materialConvolution ];
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materialConvolution.uniforms.tDiffuse.texture = rtTexture1;
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materialConvolution.uniforms.uImageIncrement.value = blurx;
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renderer.render( sceneScreen, cameraOrtho, rtTexture2 );
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// Render quad with blured scene into texture (convolution pass 2)
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materialConvolution.uniforms.tDiffuse.texture = rtTexture2;
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materialConvolution.uniforms.uImageIncrement.value = blury;
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renderer.render( sceneScreen, cameraOrtho, rtTexture3 );
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// Render original scene with superimposed blur to texture
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quadScreen.materials = [ materialScreen ];
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materialScreen.uniforms.tDiffuse.texture = rtTexture3;
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materialScreen.uniforms.opacity.value = 1.3;
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renderer.render( sceneScreen, cameraOrtho, rtTexture1, false );
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// Render to screen
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materialScreen.uniforms.tDiffuse.texture = rtTexture1;
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renderer.render( sceneScreen, cameraOrtho );
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} else {
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renderer.render( scene, camera );
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}
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}
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</script>
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</body>
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</html>
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