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misc_animation_keys.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - animation - basic</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://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> webgl - animation - basic use
</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';
let stats, clock;
let scene, camera, renderer, mixer;
init();
animate();
function init() {
scene = new v3d.Scene();
//
camera = new v3d.PerspectiveCamera(40, window.innerWidth / window.innerHeight, 1, 1000);
camera.position.set(25, 25, 50);
camera.lookAt(scene.position);
//
const axesHelper = new v3d.AxesHelper(10);
scene.add(axesHelper);
//
const geometry = new v3d.BoxGeometry(5, 5, 5);
const material = new v3d.MeshBasicMaterial({ color: 0xffffff, transparent: true });
const mesh = new v3d.Mesh(geometry, material);
scene.add(mesh);
// create a keyframe track (i.e. a timed sequence of keyframes) for each animated property
// Note: the keyframe track type should correspond to the type of the property being animated
// POSITION
const positionKF = new v3d.VectorKeyframeTrack('.position', [0, 1, 2], [0, 0, 0, 30, 0, 0, 0, 0, 0]);
// SCALE
const scaleKF = new v3d.VectorKeyframeTrack('.scale', [0, 1, 2], [1, 1, 1, 2, 2, 2, 1, 1, 1]);
// ROTATION
// Rotation should be performed using quaternions, using a v3d.QuaternionKeyframeTrack
// Interpolating Euler angles (.rotation property) can be problematic and is currently not supported
// set up rotation about x axis
const xAxis = new v3d.Vector3(1, 0, 0);
const qInitial = new v3d.Quaternion().setFromAxisAngle(xAxis, 0);
const qFinal = new v3d.Quaternion().setFromAxisAngle(xAxis, Math.PI);
const quaternionKF = new v3d.QuaternionKeyframeTrack('.quaternion', [0, 1, 2], [qInitial.x, qInitial.y, qInitial.z, qInitial.w, qFinal.x, qFinal.y, qFinal.z, qFinal.w, qInitial.x, qInitial.y, qInitial.z, qInitial.w]);
// COLOR
const colorKF = new v3d.ColorKeyframeTrack('.material.color', [0, 1, 2], [1, 0, 0, 0, 1, 0, 0, 0, 1], v3d.InterpolateDiscrete);
// OPACITY
const opacityKF = new v3d.NumberKeyframeTrack('.material.opacity', [0, 1, 2], [1, 0, 1]);
// create an animation sequence with the tracks
// If a negative time value is passed, the duration will be calculated from the times of the passed tracks array
const clip = new v3d.AnimationClip('Action', 3, [scaleKF, positionKF, quaternionKF, colorKF, opacityKF]);
// setup the v3d.AnimationMixer
mixer = new v3d.AnimationMixer(mesh);
// create a ClipAction and set it to play
const clipAction = mixer.clipAction(clip);
clipAction.play();
//
renderer = new v3d.WebGLRenderer({ antialias: true });
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);
//
stats = new Stats();
document.body.appendChild(stats.dom);
//
clock = new v3d.Clock();
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
requestAnimationFrame(animate);
render();
}
function render() {
const delta = clock.getDelta();
if (mixer) {
mixer.update(delta);
}
renderer.render(scene, camera);
stats.update();
}
</script>
</body>
</html>