three实现三维宇宙星辰粒子运动旋转动画效果代码-html代码-BFW代码库

three实现三维宇宙星辰粒子运动旋转动画效果代码

代码语言：html

所属分类：粒子

代码描述：three实现三维宇宙星辰粒子运动旋转动画效果代码，鼠标可进行控制。

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{
  overflow: hidden;
  margin: 0;
}
</style>



</head>

<body  >
  <script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.133.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/OrbitControls.133.js"></script>
  
      <script>


console.clear();

let scene = new THREE.Scene();
scene.background = new THREE.Color(0x160016);
let camera = new THREE.PerspectiveCamera(60, innerWidth / innerHeight, 1, 1000);
camera.position.set(0, 4, 21);
let renderer = new THREE.WebGLRenderer();
renderer.setSize(innerWidth, innerHeight);
document.body.appendChild(renderer.domElement);
window.addEventListener("resize", event => {
  camera.aspect = innerWidth / innerHeight;
  camera.updateProjectionMatrix();
  renderer.setSize(innerWidth, innerHeight);
})

let controls = new THREE.OrbitControls(camera, renderer.domElement);
controls.enableDamping = true;
controls.enablePan = false;

let gu = {
  time: {value: 0}
}

let sizes = [];
let shift = [];
let pushShift = () => {
  shift.push(
    Math.random() * Math.PI, 
    Math.random() * Math.PI * 2, 
    (Math.random() * 0.9 + 0.1) * Math.PI * 0.1,
    Math.random() * 0.9 + 0.1
  );
}
let pts = new Array(10000).fill().map(p => {
  sizes.push(Math.random() * 1.5 + 0.5);
  pushShift();
  return new THREE.Vector3().randomDirection().multiplyScalar(Math.random() * 0.5 + 9.5);
})
for(let i = 0; i < 50000; i++){
  let r = 10, R = 40;
  let rand = Math.pow(Math.random(), 1.5);
  let radius = Math.sqrt(R * R * rand + (1 - rand) * r * r);
  pts.push(new THREE.Vector3().setFromCylindricalCoords(radius, Math.random() * 2 * Math.PI, (Math.random() - 0.5) * 2 ));
  sizes.push(Math.random() * 1.5 + 0.5);
  pushShift();
}

let g = new THREE.BufferGeometry().setFromPoints(pts);
g.setAttribute("sizes", new THREE.Float32Bu.........完整代码请登录后点击上方下载按钮下载查看