You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
175 lines
4.7 KiB
HTML
175 lines
4.7 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<title>three.js physics - jolt instancing</title>
|
|
<meta charset="utf-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
|
|
<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> physics - <a href="https://github.com/jrouwe/JoltPhysics.js/" target="_blank">jolt</a> instancing
|
|
</div>
|
|
|
|
<script type="importmap">
|
|
{
|
|
"imports": {
|
|
"three": "../build/three.webgpu.js",
|
|
"three/webgpu": "../build/three.webgpu.js",
|
|
"three/tsl": "../build/three.tsl.js",
|
|
"three/addons/": "./jsm/"
|
|
}
|
|
}
|
|
</script>
|
|
|
|
<script type="module">
|
|
|
|
import * as THREE from 'three';
|
|
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
|
|
import { JoltPhysics } from 'three/addons/physics/JoltPhysics.js';
|
|
import Stats from 'three/addons/libs/stats.module.js';
|
|
|
|
let camera, scene, renderer, stats;
|
|
let physics, position;
|
|
|
|
let boxes, spheres;
|
|
|
|
init();
|
|
|
|
async function init() {
|
|
|
|
physics = await JoltPhysics();
|
|
position = new THREE.Vector3();
|
|
|
|
//
|
|
|
|
camera = new THREE.PerspectiveCamera( 50, window.innerWidth / window.innerHeight, 0.1, 100 );
|
|
camera.position.set( - 1, 1.5, 2 );
|
|
camera.lookAt( 0, 0.5, 0 );
|
|
|
|
scene = new THREE.Scene();
|
|
scene.background = new THREE.Color( 0x666666 );
|
|
|
|
const hemiLight = new THREE.HemisphereLight();
|
|
scene.add( hemiLight );
|
|
|
|
const dirLight = new THREE.DirectionalLight( 0xffffff, 3 );
|
|
dirLight.position.set( 5, 5, 5 );
|
|
dirLight.castShadow = true;
|
|
dirLight.shadow.camera.zoom = 2;
|
|
dirLight.shadow.bias = - 0.001;
|
|
scene.add( dirLight );
|
|
|
|
const shadowPlane = new THREE.Mesh(
|
|
new THREE.PlaneGeometry( 10, 10 ),
|
|
new THREE.ShadowMaterial( {
|
|
color: 0x444444
|
|
} ),
|
|
);
|
|
shadowPlane.rotation.x = - Math.PI / 2;
|
|
shadowPlane.receiveShadow = true;
|
|
scene.add( shadowPlane );
|
|
|
|
const floorCollider = new THREE.Mesh(
|
|
new THREE.BoxGeometry( 10, 5, 10 ),
|
|
new THREE.MeshBasicMaterial( { color: 0x666666 } )
|
|
);
|
|
floorCollider.position.y = - 2.5;
|
|
floorCollider.userData.physics = { mass: 0 };
|
|
floorCollider.visible = false;
|
|
scene.add( floorCollider );
|
|
|
|
//
|
|
|
|
const material = new THREE.MeshLambertMaterial();
|
|
|
|
const matrix = new THREE.Matrix4();
|
|
const color = new THREE.Color();
|
|
|
|
// Boxes
|
|
|
|
const geometryBox = new THREE.BoxGeometry( 0.075, 0.075, 0.075 );
|
|
boxes = new THREE.InstancedMesh( geometryBox, material, 400 );
|
|
boxes.instanceMatrix.setUsage( THREE.DynamicDrawUsage ); // will be updated every frame
|
|
boxes.castShadow = true;
|
|
boxes.receiveShadow = true;
|
|
boxes.userData.physics = { mass: 1 };
|
|
scene.add( boxes );
|
|
|
|
for ( let i = 0; i < boxes.count; i ++ ) {
|
|
|
|
matrix.setPosition( Math.random() - 0.5, Math.random() * 2, Math.random() - 0.5 );
|
|
boxes.setMatrixAt( i, matrix );
|
|
boxes.setColorAt( i, color.setHex( 0xffffff * Math.random() ) );
|
|
|
|
}
|
|
|
|
// Spheres
|
|
|
|
const geometrySphere = new THREE.IcosahedronGeometry( 0.05, 4 );
|
|
spheres = new THREE.InstancedMesh( geometrySphere, material, 400 );
|
|
spheres.instanceMatrix.setUsage( THREE.DynamicDrawUsage ); // will be updated every frame
|
|
spheres.castShadow = true;
|
|
spheres.receiveShadow = true;
|
|
spheres.userData.physics = { mass: 1 };
|
|
scene.add( spheres );
|
|
|
|
for ( let i = 0; i < spheres.count; i ++ ) {
|
|
|
|
matrix.setPosition( Math.random() - 0.5, Math.random() * 2, Math.random() - 0.5 );
|
|
spheres.setMatrixAt( i, matrix );
|
|
spheres.setColorAt( i, color.setHex( 0xffffff * Math.random() ) );
|
|
|
|
}
|
|
|
|
physics.addScene( scene );
|
|
|
|
//
|
|
|
|
renderer = new THREE.WebGPURenderer( { antialias: true } );
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
renderer.setAnimationLoop( animate );
|
|
renderer.shadowMap.enabled = true;
|
|
document.body.appendChild( renderer.domElement );
|
|
|
|
stats = new Stats();
|
|
document.body.appendChild( stats.dom );
|
|
|
|
//
|
|
|
|
const controls = new OrbitControls( camera, renderer.domElement );
|
|
controls.target.y = 0.5;
|
|
controls.update();
|
|
|
|
setInterval( () => {
|
|
|
|
let index = Math.floor( Math.random() * boxes.count );
|
|
|
|
position.set( 0, Math.random() + 1, 0 );
|
|
physics.setMeshPosition( boxes, position, index );
|
|
|
|
//
|
|
|
|
index = Math.floor( Math.random() * spheres.count );
|
|
|
|
position.set( 0, Math.random() + 1, 0 );
|
|
physics.setMeshPosition( spheres, position, index );
|
|
|
|
}, 1000 / 60 );
|
|
|
|
}
|
|
|
|
function animate() {
|
|
|
|
renderer.render( scene, camera );
|
|
|
|
stats.update();
|
|
|
|
}
|
|
|
|
</script>
|
|
</body>
|
|
</html>
|