mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-23 05:57:57 +01:00
350 lines
8.3 KiB
HTML
350 lines
8.3 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 webgl - geometry - Subdivisions with Catmull-Clark</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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font-family: Monospace;
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background-color: #f0f0f0;
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margin: 0px;
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overflow: hidden;
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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/controls/OrbitControls.js"></script>
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<script src="js/libs/stats.min.js"></script>
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<script src="fonts/helvetiker_regular.typeface.js"></script>
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<script>
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var container, stats;
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var camera, controls, scene, renderer;
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var cube, plane;
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// Create new object by parameters
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var createSomething = function( klass, args ) {
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var F = function( klass, args ) {
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return klass.apply( this, args );
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}
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F.prototype = klass.prototype;
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return new F( klass, args );
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};
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// Cube
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var materials = [];
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for ( var i = 0; i < 6; i ++ ) {
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materials.push( [ new THREE.MeshBasicMaterial( { color: Math.random() * 0xffffff, wireframe: false } ) ] );
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}
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var geometriesParams = [
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{ type: 'BoxGeometry', args: [ 200, 200, 200, 2, 2, 2, materials ] },
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{ type: 'TorusGeometry', args: [ 100, 60, 12, 12 ] },
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{ type: 'TorusKnotGeometry', args: [ ] },
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{ type: 'SphereGeometry', args: [ 100, 12, 12 ] },
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{ type: 'SphereGeometry', args: [ 100, 5, 5 ] },
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{ type: 'SphereGeometry', args: [ 100, 13, 13 ] },
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{ type: 'IcosahedronGeometry', args: [ 100, 1 ] },
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{ type: 'CylinderGeometry', args: [ 25, 75, 200, 8, 3 ]} ,
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{ type: 'OctahedronGeometry', args: [200, 0] },
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{ type: 'LatheGeometry', args: [ [
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new THREE.Vector3(0,0,-100),
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new THREE.Vector3(0,50,-50),
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new THREE.Vector3(0,10,0),
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new THREE.Vector3(0,50,050),
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new THREE.Vector3(0,0,100) ] ]},
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{ type: 'LatheGeometry', args: [ [
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new THREE.Vector3(0,0,-100),
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new THREE.Vector3(0,50,-50),
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new THREE.Vector3(0,10,0),
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new THREE.Vector3(0,50,050),
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new THREE.Vector3(0,100,100) ], 12, 0, Math.PI ] },
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{ type: 'LatheGeometry', args: [ [
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new THREE.Vector3(0,10,-100),
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new THREE.Vector3(0,50,-50),
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new THREE.Vector3(0,10,0),
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new THREE.Vector3(0,50,050),
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new THREE.Vector3(0,0,100) ], 12, Math.PI*2/3, Math.PI*3/2 ] },
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{ type: 'TextGeometry', args: ['&', {
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size: 200,
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height: 50,
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curveSegments: 1,
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font: "helvetiker"
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}]},
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{ type: 'PlaneGeometry', args: [ 200, 200, 4, 4 ] }
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];
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var info;
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var geometryIndex = 0;
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// start scene
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init();
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animate();
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function nextGeometry() {
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geometryIndex ++;
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if ( geometryIndex > geometriesParams.length - 1 ) {
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geometryIndex = 0;
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}
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addStuff();
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}
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function switchGeometry(i) {
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geometryIndex = i;
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addStuff();
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}
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function updateInfo() {
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var params = geometriesParams[ geometryIndex ];
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var dropdown = '<select id="dropdown" onchange="switchGeometry(this.value)">';
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for ( i = 0; i < geometriesParams.length; i ++ ) {
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dropdown += '<option value="' + i + '"';
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dropdown += (geometryIndex == i) ? ' selected' : '';
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dropdown += '>' + geometriesParams[i].type + '</option>';
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}
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dropdown += '</select>';
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var text =
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'Drag to spin THREE.' + params.type +
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'<br>' +
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'<br>Geometry: ' + dropdown + ' <a href="#" onclick="nextGeometry();return false;">next</a>';
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text +=
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'<br><br><font color="3333FF">Blue Arrows: Face Normals</font>' +
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'<br><font color="FF3333">Red Arrows: Vertex Normals before Geometry.mergeVertices</font>' +
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'<br>Black Arrows: Vertex Normals after Geometry.mergeVertices';
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info.innerHTML = text;
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}
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function addStuff() {
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if ( window.group !== undefined ) {
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scene.remove( group );
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}
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var params = geometriesParams[ geometryIndex ];
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geometry = createSomething( THREE[ params.type ], params.args );
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// scale geometry to a uniform size
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geometry.computeBoundingSphere();
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var scaleFactor = 160 / geometry.boundingSphere.radius;
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geometry.applyMatrix( new THREE.Matrix4().makeScale( scaleFactor, scaleFactor, scaleFactor ) );
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var originalGeometry = geometry.clone();
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originalGeometry.computeFaceNormals();
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originalGeometry.computeVertexNormals( true );
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// in case of duplicated vertices
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geometry.mergeVertices();
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geometry.computeFaceNormals();
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geometry.computeVertexNormals( true );
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updateInfo();
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var faceABCD = "abcd";
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var color, f, p, n, vertexIndex;
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for ( i = 0; i < geometry.faces.length; i ++ ) {
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f = geometry.faces[ i ];
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n = ( f instanceof THREE.Face3 ) ? 3 : 4;
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for( var j = 0; j < n; j++ ) {
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vertexIndex = f[ faceABCD.charAt( j ) ];
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p = geometry.vertices[ vertexIndex ];
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color = new THREE.Color( 0xffffff );
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color.setHSL( ( p.y ) / 400 + 0.5, 1.0, 0.5 );
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f.vertexColors[ j ] = color;
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}
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}
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group = new THREE.Group();
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scene.add( group );
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var mesh = new THREE.Mesh( geometry, new THREE.MeshBasicMaterial( { color: 0xfefefe, wireframe: true, opacity: 0.5 } ) );
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group.add( mesh );
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var fvNames = [ 'a', 'b', 'c', 'd' ];
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var normalLength = 15;
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for( var f = 0, fl = geometry.faces.length; f < fl; f ++ ) {
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var face = geometry.faces[ f ];
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var centroid = new THREE.Vector3()
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.add( geometry.vertices[ face.a ] )
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.add( geometry.vertices[ face.b ] )
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.add( geometry.vertices[ face.c ] )
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.divideScalar( 3 );
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var arrow = new THREE.ArrowHelper(
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face.normal,
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centroid,
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normalLength,
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0x3333FF );
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mesh.add( arrow );
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}
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for( var f = 0, fl = originalGeometry.faces.length; f < fl; f ++ ) {
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var face = originalGeometry.faces[ f ];
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if( face.vertexNormals === undefined ) {
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continue;
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}
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for( var v = 0, vl = face.vertexNormals.length; v < vl; v ++ ) {
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var arrow = new THREE.ArrowHelper(
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face.vertexNormals[ v ],
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originalGeometry.vertices[ face[ fvNames[ v ] ] ],
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normalLength,
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0xFF3333 );
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mesh.add( arrow );
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}
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}
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for( var f = 0, fl = mesh.geometry.faces.length; f < fl; f ++ ) {
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var face = mesh.geometry.faces[ f ];
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if( face.vertexNormals === undefined ) {
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continue;
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}
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for( var v = 0, vl = face.vertexNormals.length; v < vl; v ++ ) {
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var arrow = new THREE.ArrowHelper(
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face.vertexNormals[ v ],
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mesh.geometry.vertices[ face[ fvNames[ v ] ] ],
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normalLength,
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0x000000 );
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mesh.add( arrow );
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}
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}
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}
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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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info = document.createElement( 'div' );
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info.style.position = 'absolute';
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info.style.top = '10px';
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info.style.width = '100%';
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info.style.textAlign = 'center';
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info.innerHTML = 'Drag to spin the geometry ';
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container.appendChild( info );
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camera = new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 1, 1000 );
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camera.position.z = 500;
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scene = new THREE.Scene();
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var light = new THREE.PointLight( 0xffffff, 1.5 );
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light.position.set( 1000, 1000, 2000 );
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scene.add( light );
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addStuff();
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renderer = new THREE.WebGLRenderer( { antialias: true } ); // WebGLRenderer CanvasRenderer
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renderer.setClearColor( 0xf0f0f0 );
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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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//
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controls = new THREE.OrbitControls( camera, renderer.domElement );
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window.addEventListener( 'resize', onWindowResize, false );
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}
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function onWindowResize() {
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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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//
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function animate() {
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requestAnimationFrame( animate );
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controls.update();
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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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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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