three模拟物理软体碰撞动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：三维

代码描述：three模拟物理软体碰撞动画效果代码，点击鼠标扔球碰撞。

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<html lang="en">
	<head>
	
		<meta charset="utf-8">
		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
	
		<style>
			body {
				color: #333;
			}
		</style>
	</head>
	<body>
		<div id="info">
		点击扔球
		</div>
		<div id="container"></div>

		<script src="//repo.bfw.wiki/bfwtool/examples/js/libs/ammo.wasm.js"></script>

		<!-- Import maps polyfill -->
		<!-- Remove this when import maps will be widely supported -->
		<script async type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/es-module-shims.1.3.6.js"></script>


		<script type="importmap">
			{
				"imports": {
					"three": "//repo.bfw.wiki/bfwtool/build/three.module.js"
				}
			}
		</script>

		<script type="module">

			import * as THREE from 'three';

			import Stats from '//repo.bfw.wiki/bfwtool/examples/jsm/libs/stats.module.js';


			import { OrbitControls } from '//repo.bfw.wiki/bfwtool/examples/jsm/controls/OrbitControls.js';
			import * as BufferGeometryUtils from '//repo.bfw.wiki/bfwtool/examples/jsm/utils/BufferGeometryUtils.js';

			// Graphics variables
			let container, stats;
			let camera, controls, scene, renderer;
			let textureLoader;
			const clock = new THREE.Clock();
			let clickRequest = false;
			const mouseCoords = new THREE.Vector2();
			const raycaster = new THREE.Raycaster();
			const ballMaterial = new THREE.MeshPhongMaterial( { color: 0x202020 } );
			const pos = new THREE.Vector3();
			const quat = new THREE.Quaternion();

			// Physics variables
			const gravityConstant = - 9.8;
			let physicsWorld;
			const rigidBodies = [];
			const softBodies = [];
			const margin = 0.05;
			let transformAux1;
			let softBodyHelpers;

			Ammo().then( function ( AmmoLib ) {

				Ammo = AmmoLib;

				init();
				animate();

			} );

			function init() {

				initGraphics();

				initPhysics();

				createObjects();

				initInput();

			}

			function initGraphics() {

				container = document.getElementById( 'container' );

				camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 0.2, 2000 );

				scene = new THREE.Scene();
				scene.background = new THREE.Color( 0xbfd1e5 );

				camera.position.set( - 7, 5, 8 );

				renderer = new THREE.WebGLRenderer();
				renderer.setPixelRatio( window.devicePixelRatio );
				renderer.setSize( window.innerWidth, window.innerHeight );
				renderer.shadowMap.enabled = true;
				container.appendChild( renderer.domElement );

				controls = new OrbitControls( camera, renderer.domElement );
				controls.target.set( 0, 2, 0 );
				controls.update();

				textureLoader = new THREE.TextureLoader();

				const ambientLight = new THREE.AmbientLight( 0x404040 );
				scene.add( ambientLight );

				const light = new THREE.DirectionalLight( 0xffffff, 1 );
				light.position.set( - 10, 10, 5 );
				light.castShadow = true;
				const d = 20;
				light.shadow.camera.left = - d;
				light.shadow.camera.right = d;
				light.shadow.camera.top = d;
				light.shadow.camera.bottom = - d;

				light.shadow.camera.near = 2;
				light.shadow.camera.far = 50;

				light.shadow.mapSize.x = 1024;
				light.shadow.mapSize.y = 1024;

				scene.add( light );

				stats = new Stats();
				stats.domElement.style.position = 'absolute';
				stats.domElement.style.top = '0px';
				container.appendChild( stats.domElement );


				window.addEventListener( 'resize', onWindowResize );

			}

			function initPhysics() {

				// Physics configuration

				const collisionConfiguration = new Ammo.btSoftBodyRigidBodyCollisionConfiguration();
				const dispatcher = new Ammo.btCollisionDispatcher( collisionConfiguration );
				const broadphase = new Ammo.btDbvtBroadphase();
				const solver = new Ammo.btSequentialImpulseConstraintSolver();
				const softBodySolver = new Ammo.btDefaultSoftBodySolver();
				physicsWorld = new Ammo.btSoftRigidDynamicsWorld( dispatcher, broadphase, solver, collisionConfiguration, softBodySolver );
				physicsWorld.setGravity( new Ammo.btVector3( 0, gravityConstant, 0 ) );
				physicsWorld.getWorldInfo().set_m_gravity( new Ammo.btVector3( 0, gravityConstant, 0 ) );

				transformAux1 = new Ammo.btTransform();
				softBodyHelpers = new Ammo.btSoftBodyHelpers();

			}

			function createObjects() {

				// Ground
				pos.set( 0, - 0.5, 0 );
				quat.set( 0, 0, 0, 1 );
				const ground = createParalellepiped( 40, 1, 40, 0, pos, quat, new THREE.MeshPhongMaterial( { color: 0xFFFFFF } ) );
				ground.castShadow = true;
				ground.receiveShadow = true;
				textureLoader.load( '//repo.bfw.wiki/bfwtool/examples/textures/grid.png', function ( texture ) {

					texture.wrapS = THREE.RepeatWrapping;
					texture.wrapT = THREE.RepeatWrapping;
					texture.repeat.set( 40, 40 );
					ground.material.map = texture;
					ground.material.needsUpdate = true;

				} );

				// Create soft volumes
				const volumeMass = 15;

				const sphereGeometry = new THREE.SphereGeometry( 1.5, 40, 25 );
				sphereGeometry.translate( 5, 5, 0 );
				createSoftVolume( sphereGeometry, volumeMass, 250 );

				const boxGeometry = new THREE.BoxGeometry( 1, 1, 5, 4, 4, 20 );
				boxGeometry.translate( - 2, 5, 0 );
				createSoftVolume( boxGeometry, volumeMass, 120 );

				// Ramp
				pos.set( 3, 1, 0 );
				quat.setFromAxisAngle( new THREE.Vector3( 0, 0, 1 ), 30 * Math.PI / 180 );
				const obstacle = createParalellepiped( 10, 1, 4, 0, pos, quat, new THREE.MeshPhongMaterial( { color: 0x606060 } ) );
				obstacle.castShadow = true;
				obstacle.receiveShadow = true;

			}

			function processGeometry( bufGeometry ) {

				// Ony consider the position values when merging the vertices
				const posOnlyBufGeometry = new THREE.BufferGeometry();
				posOnlyBufGeometry.setAttribute( 'position', bufGeometry.getAttribute( 'position' ) );
				posOnlyBufGeometry.setIndex( bufGeometry.getIndex() );

				// Merge the vertices so the triangle soup is converted to indexed triangles
				const indexedBufferGeom = BufferGeometryUtils.mergeVertices( posOnlyBufGeometry );

				// Create index arrays mapping the indexed vertices to bufGeometry vertices
				mapIndices( bufGeometry, indexedBufferGeom );

			}

			function isEqual( x1, y1, z1, x2, y2, z2 ) {

				const delta = 0.000001;
				return Math.abs( x2 - x1 ) < delta &&
						Math.abs( y2 - y1 ) < delta &&
						Math.abs( z2 - z1 ) < delta;

			}

			function mapIndices( bufGeometry, indexedBufferGeom ) {

				// Creates ammoVertices, ammoIndices and ammoIndexAssociation in bufGeometry

				const vertices = bufGeometry.attributes.position.array;
				const idxVertices = indexedBufferGeom.attributes.position.array;
				const indices = indexedBufferGeom.index.array;

				const numIdxVertices = idxVertices.length / 3;
				const numVertices = vertices.length / 3;

				bufGeometry.ammoVertices = idxVertices;
				bufGeometry.ammoIndices = indices;
				bufGeometry.ammo.........完整代码请登录后点击上方下载按钮下载查看