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webgl_animation_skinning_morph.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - skinning and morphing</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">
<style>
body {
color: #222;
}
a {
color: #2fa1d6;
}
p {
max-width: 600px;
margin-left: auto;
margin-right: auto;
padding: 0 2em;
}
</style>
</head>
<body>
<div id="info">
<a href="https://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> webgl - skinning and morphing<br />
<p>
The animation system allows clips to be played individually, looped, or crossfaded with other clips. This example shows a character looping in one of several base animation states, then transitioning smoothly to one-time actions. Facial expressions are controlled independently with morph targets.
</p>
Model by
<a href="https://www.patreon.com/quaternius" target="_blank" rel="noopener">Tomás Laulhé</a>,
modifications by <a href="https://donmccurdy.com/" target="_blank" rel="noopener">Don McCurdy</a>. CC0.<br />
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"v3d": "../build/v3d.module.js",
"v3d/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as v3d from 'v3d';
import Stats from 'v3d/addons/libs/stats.module.js';
import { GUI } from 'v3d/addons/libs/lil-gui.module.min.js';
import { GLTFLoader } from 'v3d/addons/loaders/GLTFLoader.js';
let container, stats, clock, gui, mixer, actions, activeAction, previousAction;
let camera, scene, renderer, model, face;
const api = { state: 'Walking' };
init();
animate();
function init() {
container = document.createElement('div');
document.body.appendChild(container);
camera = new v3d.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.25, 100);
camera.position.set(- 5, 3, 10);
camera.lookAt(0, 2, 0);
scene = new v3d.Scene();
scene.background = new v3d.Color(0xe0e0e0);
scene.fog = new v3d.Fog(0xe0e0e0, 20, 100);
clock = new v3d.Clock();
// lights
const hemiLight = new v3d.HemisphereLight(0xffffff, 0x444444);
hemiLight.position.set(0, 20, 0);
scene.add(hemiLight);
const dirLight = new v3d.DirectionalLight(0xffffff);
dirLight.position.set(0, 20, 10);
scene.add(dirLight);
// ground
const mesh = new v3d.Mesh(new v3d.PlaneGeometry(2000, 2000), new v3d.MeshPhongMaterial({ color: 0x999999, depthWrite: false }));
mesh.rotation.x = - Math.PI / 2;
scene.add(mesh);
const grid = new v3d.GridHelper(200, 40, 0x000000, 0x000000);
grid.material.opacity = 0.2;
grid.material.transparent = true;
scene.add(grid);
// model
const loader = new GLTFLoader();
loader.load('models/gltf/RobotExpressive/RobotExpressive.glb', function(gltf) {
model = gltf.scene;
scene.add(model);
createGUI(model, gltf.animations);
}, undefined, function(e) {
console.error(e);
});
renderer = new v3d.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.outputEncoding = v3d.sRGBEncoding;
container.appendChild(renderer.domElement);
window.addEventListener('resize', onWindowResize);
// stats
stats = new Stats();
container.appendChild(stats.dom);
}
function createGUI(model, animations) {
const states = ['Idle', 'Walking', 'Running', 'Dance', 'Death', 'Sitting', 'Standing'];
const emotes = ['Jump', 'Yes', 'No', 'Wave', 'Punch', 'ThumbsUp'];
gui = new GUI();
mixer = new v3d.AnimationMixer(model);
actions = {};
for (let i = 0; i < animations.length; i++) {
const clip = animations[i];
const action = mixer.clipAction(clip);
actions[clip.name] = action;
if (emotes.indexOf(clip.name) >= 0 || states.indexOf(clip.name) >= 4) {
action.clampWhenFinished = true;
action.loop = v3d.LoopOnce;
}
}
// states
const statesFolder = gui.addFolder('States');
const clipCtrl = statesFolder.add(api, 'state').options(states);
clipCtrl.onChange(function() {
fadeToAction(api.state, 0.5);
});
statesFolder.open();
// emotes
const emoteFolder = gui.addFolder('Emotes');
function createEmoteCallback(name) {
api[name] = function() {
fadeToAction(name, 0.2);
mixer.addEventListener('finished', restoreState);
};
emoteFolder.add(api, name);
}
function restoreState() {
mixer.removeEventListener('finished', restoreState);
fadeToAction(api.state, 0.2);
}
for (let i = 0; i < emotes.length; i++) {
createEmoteCallback(emotes[i]);
}
emoteFolder.open();
// expressions
face = model.getObjectByName('Head_4');
const expressions = Object.keys(face.morphTargetDictionary);
const expressionFolder = gui.addFolder('Expressions');
for (let i = 0; i < expressions.length; i++) {
expressionFolder.add(face.morphTargetInfluences, i, 0, 1, 0.01).name(expressions[i]);
}
activeAction = actions['Walking'];
activeAction.play();
expressionFolder.open();
}
function fadeToAction(name, duration) {
previousAction = activeAction;
activeAction = actions[name];
if (previousAction !== activeAction) {
previousAction.fadeOut(duration);
}
activeAction
.reset()
.setEffectiveTimeScale(1)
.setEffectiveWeight(1)
.fadeIn(duration)
.play();
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
//
function animate() {
const dt = clock.getDelta();
if (mixer) mixer.update(dt);
requestAnimationFrame(animate);
renderer.render(scene, camera);
stats.update();
}
</script>
</body>
</html>