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- <html lang="en">
- <head>
- <title>three.js webgpu - animation retargeting</title>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
- <link type="text/css" rel="stylesheet" href="main.css">
- </head>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgpu - animation retargeting
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.webgpu.js",
- "three/tsl": "../build/three.webgpu.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { color, screenUV, hue, timerLocal, reflector, Fn, vec2, length, atan2, float, sin, cos, vec3, sub, mul, pow, dodge, normalWorld } from 'three/tsl';
- import Stats from 'three/addons/libs/stats.module.js';
- import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
- import { GLTFLoader } from 'three/addons/loaders/GLTFLoader.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- import * as SkeletonUtils from 'three/addons/utils/SkeletonUtils.js';
- const [ sourceModel, targetModel ] = await Promise.all( [
- new Promise( ( resolve, reject ) => {
- new GLTFLoader().load( './models/gltf/Michelle.glb', resolve, undefined, reject );
- } ),
- new Promise( ( resolve, reject ) => {
- new GLTFLoader().load( './models/gltf/Soldier.glb', resolve, undefined, reject );
- } )
- ] );
- //
- const clock = new THREE.Clock();
- const stats = new Stats();
- document.body.appendChild( stats.dom );
- export const lightSpeed = /*#__PURE__*/ Fn( ( [ suv_immutable ] ) => {
- // forked from https://www.shadertoy.com/view/7ly3D1
- const time = timerLocal( 1 );
- const suv = vec2( suv_immutable );
- const uv = vec2( length( suv ), atan2( suv.y, suv.x ) );
- const offset = float( float( .1 ).mul( sin( uv.y.mul( 10. ).sub( time.mul( .6 ) ) ) ).mul( cos( uv.y.mul( 48. ).add( time.mul( .3 ) ) ) ).mul( cos( uv.y.mul( 3.7 ).add( time ) ) ) );
- const rays = vec3( vec3( sin( uv.y.mul( 150. ).add( time ) ).mul( .5 ).add( .5 ) ).mul( vec3( sin( uv.y.mul( 80. ).sub( time.mul( 0.6 ) ) ).mul( .5 ).add( .5 ) ) ).mul( vec3( sin( uv.y.mul( 45. ).add( time.mul( 0.8 ) ) ).mul( .5 ).add( .5 ) ) ).mul( vec3( sub( 1., cos( uv.y.add( mul( 22., time ).sub( pow( uv.x.add( offset ), .3 ).mul( 60. ) ) ) ) ) ) ).mul( vec3( uv.x.mul( 2. ) ) ) );
- return rays;
- } ).setLayout( {
- name: 'lightSpeed',
- type: 'vec3',
- inputs: [
- { name: 'suv', type: 'vec2' }
- ]
- } );
- // scene
- const scene = new THREE.Scene();
- // background
- const coloredVignette = screenUV.distance( .5 ).mix( hue( color( 0x0175ad ), timerLocal( .1 ) ), hue( color( 0x02274f ), timerLocal( .5 ) ) );
- const lightSpeedEffect = lightSpeed( normalWorld ).clamp();
- const lightSpeedSky = normalWorld.y.remapClamp( -.1, 1 ).mix( 0, lightSpeedEffect );
- const composedBackground = dodge( coloredVignette, lightSpeedSky );
- scene.backgroundNode = composedBackground;
- //
- const helpers = new THREE.Group();
- helpers.visible = false;
- scene.add( helpers );
- const light = new THREE.HemisphereLight( 0xe9c0a5, 0x0175ad, 5 );
- scene.add( light );
- const dirLight = new THREE.DirectionalLight( 0xfff9ea, 4 );
- dirLight.position.set( 2, 5, 2 );
- scene.add( dirLight );
- const camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, .25, 50 );
- camera.position.set( 0, 1, 4 );
- // add models to scene
- scene.add( sourceModel.scene );
- scene.add( targetModel.scene );
- // reposition models
- sourceModel.scene.position.x -= .8;
- targetModel.scene.position.x += .7;
- targetModel.scene.position.z -= .1;
- // reajust model
- targetModel.scene.scale.setScalar( .01 );
- // flip model
- sourceModel.scene.rotation.y = Math.PI / 2;
- targetModel.scene.rotation.y = - Math.PI / 2;
- // retarget
- const source = getSource( sourceModel );
- const mixer = retargetModel( source, targetModel );
- // floor
- const reflection = reflector();
- reflection.target.rotateX( - Math.PI / 2 );
- scene.add( reflection.target );
- const floorMaterial = new THREE.NodeMaterial();
- floorMaterial.colorNode = reflection;
- floorMaterial.opacity = .2;
- floorMaterial.transparent = true;
- const floor = new THREE.Mesh( new THREE.BoxGeometry( 50, .001, 50 ), floorMaterial );
- floor.receiveShadow = true;
- floor.position.set( 0, 0, 0 );
- scene.add( floor );
- // renderer
- const renderer = new THREE.WebGPURenderer( { antialias: true } );
- renderer.toneMapping = THREE.NeutralToneMapping;
- renderer.setAnimationLoop( animate );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- document.body.appendChild( renderer.domElement );
- const controls = new OrbitControls( camera, renderer.domElement );
- controls.minDistance = 3;
- controls.maxDistance = 12;
- controls.target.set( 0, 1, 0 );
- controls.maxPolarAngle = Math.PI / 2;
- const gui = new GUI();
- gui.add( helpers, 'visible' ).name( 'helpers' );
- //
- function getSource( sourceModel ) {
- const clip = sourceModel.animations[ 0 ]
- const helper = new THREE.SkeletonHelper( sourceModel.scene );
- helpers.add( helper );
- const skeleton = new THREE.Skeleton( helper.bones );
- const mixer = new THREE.AnimationMixer( sourceModel.scene );
- mixer.clipAction( sourceModel.animations[ 0 ] ).play();
- return { clip, skeleton, mixer };
- }
- function retargetModel( sourceModel, targetModel ) {
- const targetSkin = targetModel.scene.children[ 0 ].children[ 0 ];
- const targetSkelHelper = new THREE.SkeletonHelper( targetModel.scene );
- helpers.add( targetSkelHelper );
- const rotateCW45 = new THREE.Matrix4().makeRotationY( THREE.MathUtils.degToRad( 45 ) );
- const rotateCCW180 = new THREE.Matrix4().makeRotationY( THREE.MathUtils.degToRad( - 180 ) );
- const rotateCW180 = new THREE.Matrix4().makeRotationY( THREE.MathUtils.degToRad( 180 ) );
- const rotateFoot = new THREE.Matrix4().makeRotationFromEuler( new THREE.Euler( THREE.MathUtils.degToRad( 45 ), THREE.MathUtils.degToRad( 180 ), THREE.MathUtils.degToRad( 0 ) ) );
- const retargetOptions = {
- // specify the name of the source's hip bone.
- hip: 'mixamorigHips',
- // specify the influence of the source's hip bone.
- // use ( 0, 1, 0 ) to ignore xz hip movement.
- //hipInfluence: new THREE.Vector3( 0, 1, 0 ),
- // specify an animation range in seconds.
- //trim: [ 3.0, 4.0 ],
- // preserve the scale of the target model
- scale: 1 / targetModel.scene.scale.y,
- // offset target bones -> { targetBoneName: offsetMatrix }
- localOffsets: {
- mixamorigLeftShoulder: rotateCW45,
- mixamorigRightShoulder: rotateCCW180,
- mixamorigLeftArm: rotateCW45,
- mixamorigRightArm: rotateCCW180,
- mixamorigLeftForeArm: rotateCW45,
- mixamorigRightForeArm: rotateCCW180,
- mixamorigLeftHand: rotateCW45,
- mixamorigRightHand: rotateCCW180,
- mixamorigLeftUpLeg: rotateCW180,
- mixamorigRightUpLeg: rotateCW180,
- mixamorigLeftLeg: rotateCW180,
- mixamorigRightLeg: rotateCW180,
- mixamorigLeftFoot: rotateFoot,
- mixamorigRightFoot: rotateFoot,
- mixamorigLeftToeBase: rotateCW180,
- mixamorigRightToeBase: rotateCW180
- },
- // Map of target's bone names to source's bone names -> { targetBoneName: sourceBoneName }
- names: {
- mixamorigHips: 'mixamorigHips',
- mixamorigSpine: 'mixamorigSpine',
- mixamorigSpine2: 'mixamorigSpine2',
- mixamorigHead: 'mixamorigHead',
- mixamorigLeftShoulder: 'mixamorigLeftShoulder',
- mixamorigRightShoulder: 'mixamorigRightShoulder',
- mixamorigLeftArm: 'mixamorigLeftArm',
- mixamorigRightArm: 'mixamorigRightArm',
- mixamorigLeftForeArm: 'mixamorigLeftForeArm',
- mixamorigRightForeArm: 'mixamorigRightForeArm',
- mixamorigLeftHand: 'mixamorigLeftHand',
- mixamorigRightHand: 'mixamorigRightHand',
- mixamorigLeftUpLeg: 'mixamorigLeftUpLeg',
- mixamorigRightUpLeg: 'mixamorigRightUpLeg',
- mixamorigLeftLeg: 'mixamorigLeftLeg',
- mixamorigRightLeg: 'mixamorigRightLeg',
- mixamorigLeftFoot: 'mixamorigLeftFoot',
- mixamorigRightFoot: 'mixamorigRightFoot',
- mixamorigLeftToeBase: 'mixamorigLeftToeBase',
- mixamorigRightToeBase: 'mixamorigRightToeBase'
- }
- };
- const retargetedClip = SkeletonUtils.retargetClip( targetSkin, sourceModel.skeleton, sourceModel.clip, retargetOptions );
- // Apply the mixer directly to the SkinnedMesh, not any
- // ancestor node, because that's what
- // SkeletonUtils.retargetClip outputs the clip to be
- // compatible with.
- const mixer = new THREE.AnimationMixer( targetSkin );
- mixer.clipAction( retargetedClip ).play();
- return mixer;
- }
- window.onresize = function () {
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- };
- function animate() {
- const delta = clock.getDelta();
- source.mixer.update( delta );
- mixer.update( delta );
- controls.update();
- stats.update();
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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