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296 lines
7.0 KiB
296 lines
7.0 KiB
2 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>Three.js Bones Browser</title>
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<link rel="shortcut icon" href="../../files/favicon.ico" />
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<link rel="stylesheet" type="text/css" href="../../files/main.css">
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<style>
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canvas {
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display: block;
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width: 100%;
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height: 100%;
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}
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#newWindow {
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display: block;
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position: absolute;
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bottom: 0.3em;
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left: 0.5em;
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color: #fff;
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}
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</style>
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</head>
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<body>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../../build/three.module.js",
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"three/addons/": "../../examples/jsm/"
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}
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}
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</script>
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<a id='newWindow' href='./bones-browser.html' target='_blank'>Open in New Window</a>
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<script type="module">
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import {
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Bone,
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Color,
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CylinderGeometry,
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DoubleSide,
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Float32BufferAttribute,
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MeshPhongMaterial,
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PerspectiveCamera,
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PointLight,
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Scene,
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SkinnedMesh,
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Skeleton,
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SkeletonHelper,
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Vector3,
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Uint16BufferAttribute,
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WebGLRenderer
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} from 'three';
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import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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let gui, scene, camera, renderer, orbit, lights, mesh, bones, skeletonHelper;
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const state = {
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animateBones: false
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};
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function initScene() {
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gui = new GUI();
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scene = new Scene();
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scene.background = new Color( 0x444444 );
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camera = new PerspectiveCamera( 75, window.innerWidth / window.innerHeight, 0.1, 200 );
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camera.position.z = 30;
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camera.position.y = 30;
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renderer = new WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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document.body.appendChild( renderer.domElement );
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orbit = new OrbitControls( camera, renderer.domElement );
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orbit.enableZoom = false;
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lights = [];
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lights[ 0 ] = new PointLight( 0xffffff, 1, 0 );
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lights[ 1 ] = new PointLight( 0xffffff, 1, 0 );
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lights[ 2 ] = new PointLight( 0xffffff, 1, 0 );
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lights[ 0 ].position.set( 0, 200, 0 );
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lights[ 1 ].position.set( 100, 200, 100 );
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lights[ 2 ].position.set( - 100, - 200, - 100 );
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scene.add( lights[ 0 ] );
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scene.add( lights[ 1 ] );
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scene.add( lights[ 2 ] );
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window.addEventListener( 'resize', function () {
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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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}, false );
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initBones();
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setupDatGui();
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}
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function createGeometry( sizing ) {
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const geometry = new CylinderGeometry(
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5, // radiusTop
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5, // radiusBottom
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sizing.height, // height
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8, // radiusSegments
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sizing.segmentCount * 3, // heightSegments
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true // openEnded
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);
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const position = geometry.attributes.position;
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const vertex = new Vector3();
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const skinIndices = [];
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const skinWeights = [];
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for ( let i = 0; i < position.count; i ++ ) {
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vertex.fromBufferAttribute( position, i );
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const y = ( vertex.y + sizing.halfHeight );
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const skinIndex = Math.floor( y / sizing.segmentHeight );
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const skinWeight = ( y % sizing.segmentHeight ) / sizing.segmentHeight;
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skinIndices.push( skinIndex, skinIndex + 1, 0, 0 );
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skinWeights.push( 1 - skinWeight, skinWeight, 0, 0 );
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}
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geometry.setAttribute( 'skinIndex', new Uint16BufferAttribute( skinIndices, 4 ) );
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geometry.setAttribute( 'skinWeight', new Float32BufferAttribute( skinWeights, 4 ) );
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return geometry;
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}
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function createBones( sizing ) {
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bones = [];
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let prevBone = new Bone();
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bones.push( prevBone );
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prevBone.position.y = - sizing.halfHeight;
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for ( let i = 0; i < sizing.segmentCount; i ++ ) {
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const bone = new Bone();
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bone.position.y = sizing.segmentHeight;
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bones.push( bone );
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prevBone.add( bone );
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prevBone = bone;
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}
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return bones;
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}
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function createMesh( geometry, bones ) {
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const material = new MeshPhongMaterial( {
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color: 0x156289,
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emissive: 0x072534,
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side: DoubleSide,
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flatShading: true
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} );
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const mesh = new SkinnedMesh( geometry, material );
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const skeleton = new Skeleton( bones );
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mesh.add( bones[ 0 ] );
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mesh.bind( skeleton );
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skeletonHelper = new SkeletonHelper( mesh );
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skeletonHelper.material.linewidth = 2;
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scene.add( skeletonHelper );
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return mesh;
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}
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function setupDatGui() {
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let folder = gui.addFolder( 'General Options' );
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folder.add( state, 'animateBones' );
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folder.controllers[ 0 ].name( 'Animate Bones' );
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folder.add( mesh, 'pose' );
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folder.controllers[ 1 ].name( '.pose()' );
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const bones = mesh.skeleton.bones;
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for ( let i = 0; i < bones.length; i ++ ) {
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const bone = bones[ i ];
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folder = gui.addFolder( 'Bone ' + i );
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folder.add( bone.position, 'x', - 10 + bone.position.x, 10 + bone.position.x );
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folder.add( bone.position, 'y', - 10 + bone.position.y, 10 + bone.position.y );
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folder.add( bone.position, 'z', - 10 + bone.position.z, 10 + bone.position.z );
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folder.add( bone.rotation, 'x', - Math.PI * 0.5, Math.PI * 0.5 );
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folder.add( bone.rotation, 'y', - Math.PI * 0.5, Math.PI * 0.5 );
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folder.add( bone.rotation, 'z', - Math.PI * 0.5, Math.PI * 0.5 );
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folder.add( bone.scale, 'x', 0, 2 );
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folder.add( bone.scale, 'y', 0, 2 );
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folder.add( bone.scale, 'z', 0, 2 );
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folder.controllers[ 0 ].name( 'position.x' );
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folder.controllers[ 1 ].name( 'position.y' );
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folder.controllers[ 2 ].name( 'position.z' );
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folder.controllers[ 3 ].name( 'rotation.x' );
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folder.controllers[ 4 ].name( 'rotation.y' );
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folder.controllers[ 5 ].name( 'rotation.z' );
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folder.controllers[ 6 ].name( 'scale.x' );
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folder.controllers[ 7 ].name( 'scale.y' );
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folder.controllers[ 8 ].name( 'scale.z' );
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}
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}
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function initBones() {
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const segmentHeight = 8;
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const segmentCount = 4;
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const height = segmentHeight * segmentCount;
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const halfHeight = height * 0.5;
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const sizing = {
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segmentHeight: segmentHeight,
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segmentCount: segmentCount,
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height: height,
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halfHeight: halfHeight
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};
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const geometry = createGeometry( sizing );
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const bones = createBones( sizing );
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mesh = createMesh( geometry, bones );
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mesh.scale.multiplyScalar( 1 );
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scene.add( mesh );
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}
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function render() {
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requestAnimationFrame( render );
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const time = Date.now() * 0.001;
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//Wiggle the bones
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if ( state.animateBones ) {
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for ( let i = 0; i < mesh.skeleton.bones.length; i ++ ) {
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mesh.skeleton.bones[ i ].rotation.z = Math.sin( time ) * 2 / mesh.skeleton.bones.length;
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}
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}
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renderer.render( scene, camera );
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}
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initScene();
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render();
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</script>
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</body>
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</html>
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