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webgl_interactive_cubes.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>Verge3D webgl - interactive cubes</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 {
background-color: #f0f0f0;
color: #444;
}
a {
color: #08f;
}
</style>
</head>
<body>
<div id="info">
<a href="https://www.soft8soft.com/verge3d" target="_blank" rel="noopener">Verge3D</a> webgl - interactive cubes
</div>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/es-module-shims@1.3.6/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 container, stats;
let camera, scene, raycaster, renderer;
let INTERSECTED;
let theta = 0;
const pointer = new v3d.Vector2();
const radius = 100;
init();
animate();
function init() {
container = document.createElement('div');
document.body.appendChild(container);
camera = new v3d.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 1, 10000);
scene = new v3d.Scene();
scene.background = new v3d.Color(0xf0f0f0);
const light = new v3d.DirectionalLight(0xffffff, 1);
light.position.set(1, 1, 1).normalize();
scene.add(light);
const geometry = new v3d.BoxGeometry(20, 20, 20);
for (let i = 0; i < 2000; i++) {
const object = new v3d.Mesh(geometry, new v3d.MeshLambertMaterial({ color: Math.random() * 0xffffff }));
object.position.x = Math.random() * 800 - 400;
object.position.y = Math.random() * 800 - 400;
object.position.z = Math.random() * 800 - 400;
object.rotation.x = Math.random() * 2 * Math.PI;
object.rotation.y = Math.random() * 2 * Math.PI;
object.rotation.z = Math.random() * 2 * Math.PI;
object.scale.x = Math.random() + 0.5;
object.scale.y = Math.random() + 0.5;
object.scale.z = Math.random() + 0.5;
scene.add(object);
}
raycaster = new v3d.Raycaster();
renderer = new v3d.WebGLRenderer();
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
container.appendChild(renderer.domElement);
stats = new Stats();
container.appendChild(stats.dom);
document.addEventListener('mousemove', onPointerMove);
//
window.addEventListener('resize', onWindowResize);
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function onPointerMove(event) {
pointer.x = (event.clientX / window.innerWidth) * 2 - 1;
pointer.y = - (event.clientY / window.innerHeight) * 2 + 1;
}
//
function animate() {
requestAnimationFrame(animate);
render();
stats.update();
}
function render() {
theta += 0.1;
camera.position.x = radius * Math.sin(v3d.MathUtils.degToRad(theta));
camera.position.y = radius * Math.sin(v3d.MathUtils.degToRad(theta));
camera.position.z = radius * Math.cos(v3d.MathUtils.degToRad(theta));
camera.lookAt(scene.position);
camera.updateMatrixWorld();
// find intersections
raycaster.setFromCamera(pointer, camera);
const intersects = raycaster.intersectObjects(scene.children, false);
if (intersects.length > 0) {
if (INTERSECTED != intersects[0].object) {
if (INTERSECTED) INTERSECTED.material.emissive.setHex(INTERSECTED.currentHex);
INTERSECTED = intersects[0].object;
INTERSECTED.currentHex = INTERSECTED.material.emissive.getHex();
INTERSECTED.material.emissive.setHex(0xff0000);
}
} else {
if (INTERSECTED) INTERSECTED.material.emissive.setHex(INTERSECTED.currentHex);
INTERSECTED = null;
}
renderer.render(scene, camera);
}
</script>
</body>
</html>