three实现三维萤火虫漂浮动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：动画

代码描述：three实现三维萤火虫漂浮动画效果代码

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

<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">
  

  
  
  
<style>
body {
  margin: 0;
}
#world {
  position: absolute;
  overflow: hidden;
  width: 100%;
  height: 100%;
}
</style>




</head>

<body >
  <div id="world"></div>


<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.88.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/OrbitControls.min.js"></script>
      <script  >
'use strict';

let scene,
camera,
renderer,
controls,
width,
height;

let ground,
dotSystem,
jar;

let jarFireflies = [],
fireflies = [];

function init() {
  width = window.innerWidth,
  height = window.innerHeight;

  scene = new THREE.Scene();
  camera = new THREE.PerspectiveCamera(75, width / height, 0.1, 1000);
  camera.lookAt(scene.position);
  camera.position.z = 500;

  renderer = new THREE.WebGLRenderer({ antialias: true });
  renderer.setPixelRatio(window.devicePixelRatio);
  renderer.setSize(width, height);
  renderer.setClearColor(0x000A3D);
  renderer.shadowMap.enabled = true;
  renderer.shadowMap.type = THREE.PCFSoftShadowMap;

  // controls = new THREE.OrbitControls(camera, renderer.domElement);

  addLights();
  drawGround();
  drawDotSystem();
  drawJar();
  drawFireflies();

  document.getElementById('world').appendChild(renderer.domElement);
  window.addEventListener('resize', onResize, false);
}

function addLights() {
  const ambientLight = new THREE.AmbientLight(0xCCD5FF, 0.8);
  scene.add(ambientLight);

  const directLight = new THREE.DirectionalLight(0xE1FEA4, 0.5);
  directLight.castShadow = true;
  directLight.position.set(200, 200, 200);
  scene.add(directLight);

  const pointLight = new THREE.PointLight(0xFF007B, 0.4);
  pointLight.castShadow = true;
  pointLight.position.set(-100, 100, 100);
  scene.add(pointLight);
}

function drawGround() {
  const geometry = new THREE.TetrahedronGeometry(200, 2);
  const material = new THREE.MeshPhongMaterial({
    color: 0x0A9381,
    shading: THREE.FlatShading });


  ground = new THREE.Mesh(geometry, material);
  ground.scale.set(3, 1, 2);
  ground.position.y = -305;
  ground.castShadow = true;
  ground.receiveShadow = true;
  scene.add(ground);
}

function drawDotSystem() {
  dotSystem = new THREE.Group();
  scene.add(dotSystem);

  const system1 = new DotSystem({
    intensity: 3000,
    color: 0xE1FEA4,
    xSpread: 800,
    ySpread: 800,
    zSpread: 800 });

  dotSystem.add(system1.group);

  const system2 = new DotSystem({
    intensity: 100,
    color: 0xFF007B,
    xSpread: 300,
    ySpread: 500,
    zSpread: 400,
    size: 13 });

  system2.group.position.set(-100, -80, 0);
  dotSystem.add(system2.group);
}

function drawJar() {
  jar = new THREE.Group();
  jar.position.set(-100, -10, 20);
  jar.rotation.z = 0.1;
  scene.add(jar);

  const jarGeometry = new THREE.CylinderGeometry(100, 110, 200, 10);
  const jarMaterial = new THREE.MeshPhongMaterial({
    color: 0xA9B8FC,
    transparent: true,
    opacity: 0.5,
    depthWrite: false,
    shading: THREE.FlatShading });


  const body = new THREE.Mesh(jarGeometry, jarMaterial);
  body.castShadow = true;
  body.receiveShadow = true;
  jar.add(body);

  const capGeometry = new THREE.CylinderGeometry(100, 100, 30, 10);
  const capMaterial = jarMaterial.clone();
  capMaterial.opacity = 0.8;
  const cap = new THREE.Mesh(capGeometry, capMaterial);
  cap.castShadow = true;
  cap.receiveShadow = true;
  cap.position.set(38, 110, 0);
  cap.rotation.z = 0.13;
  jar.add(cap);

  const bottomGeometry = new THREE.CylinderGeometry(110, 110, 20, 10);
  const bottom = new THREE.Mesh(bottomGeometry, jarMaterial);
  bottom.castShadow = true;
  bottom.receiveShadow = true;
  bottom.position.y = -110;
  jar.add(bottom);
}

function drawFireflies() {
  const randSpread = pos => THREE.Math.randFloatSpread(pos);
  const rand = (min, max) => THREE.Math.randFloat(min, max);

  for (let i = 0; i < 4; i += 1) {
    const firefly = new Fly({
      light: false,
      bodyColor: 0x5363B2,
      wingColor: 0xA9B8FC,
      lightColor: 0x00FFA5 });

    firefly.group.position.set(randSpread(160), randSpread(190), randSpread(160));

    const scale = rand(0.4, 0.8);
    firefly.group.scale.set(scale, scale, scale);

    jar.add(firefly.group);
    jarFireflies.push(firefly);
  }
  for (let i = 0; i < 5; i += 1) {
    const firefly = new Fly({
      light: true,
      bodyColor: 0x5363B2,
      wingColor: 0xA9B8FC,
 .........完整代码请登录后点击上方下载按钮下载查看