three实现三维彩色粒子漏斗下落动画效果代码-html代码-BFW代码库

three实现三维彩色粒子漏斗下落动画效果代码

代码语言：html

所属分类：粒子

代码描述：three实现三维彩色粒子漏斗下落动画效果代码

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 {
  background: #000;
  -ms-scroll-chaining: none;
      overscroll-behavior: none;
}
#loading {
  background: #000;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  visibility: visible;
  opacity: 1;
  transition: visibility 1.6s, opacity 1.6s;
}
#loading .circle {
  width: 50px;
  height: 50px;
  background: #fff;
  border-radius: 50%;
  opacity: 0;
  transform: scale(0, 0);
  -webkit-animation: circle-animation 1.6s ease-in-out 0s infinite normal none;
          animation: circle-animation 1.6s ease-in-out 0s infinite normal none;
}
#loading.loaded {
  visibility: hidden;
  opacity: 0;
}
#container {
  width: 100vw;
  height: 100vh;
}
/** css animation */
@-webkit-keyframes circle-animation {
  0% {
    opacity: 0;
    transform: scale(0, 0);
  }
  50% {
    opacity: 1;
    transform: scale(1, 1);
  }
}
@keyframes circle-animation {
  0% {
    opacity: 0;
    transform: scale(0, 0);
  }
  50% {
    opacity: 1;
    transform: scale(1, 1);
  }
}
</style>


</head>

<body >
  <div id="loading">
  <div class="circle"></div>
</div>
<div id="container"></div>

<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/Stats-16.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/simplex-noise.min.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/three.126.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/OrbitControls.126.js"></script>
      <script>


const simplex = new SimplexNoise();

const getRandomNumber = function (min, max) {
  return Math.floor(Math.random() * (max - min + 1) + min);
};

/** vertex shader source */
const vertexShaderSource = `
uniform float uTime;

varying vec2 vUv;

float PI = 3.14159265359;

void main(){
  vUv = uv;
  gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);
}

`;

/** fragment shader source */
const fragmentShaderSource = `
uniform float uTime;
uniform sampler2D texture;

varying vec2 vUv;
varying vec3 vPosition;

void main () {
  gl_FragColor = vec4(vUv, abs(sin(uTime)), 1.0);
}

`;

/**
 * class Sketch
 */
class Sketch {
  constructor() {
    /** canvas */
    this.renderer = null;

    /** 3js parameters*/
    this.stats = null;
    this.camera = null;
    this.scene = null;
    this.controls = null;
    this.light = null;

    /** shape */
    this.shapes = null;
    this.shapesOfNumber = null;

    /** etc patrameters */
    this.width = null;
    this.height = null;
    this.dist = null;
    this.time = null;
    this.mouse = null;
    this.animationId = null;

    /** setup */
    this.setupEvents();
    this.statsInit();
    this.init();
  }

  statsInit() {
    this.stats = new Stats();
    this.stats.setMode(0);
    this.stats.domElement.style.position = 'absolute';
    this.stats.domElement.style.left = '0';
    this.stats.domElement.style.top = '0';
    document.getElementById('container').appendChild(this.stats.domElement);
  }

  init() {
    /** time */
    this.time = new THREE.Clock(true);

    /** mouse */
    this.mouse = new THREE.Vector2();

    /** canvas size */
    this.width = window.innerWidth;
    this.height = window.innerHeight;

    /** scene */
    this.scene = new THREE.Scene();

    /** setup and render */
    this.setupCanvas();
    this.setupCamera();
    this.setupLight();
    this.setupShape();

    this.render();
  }

  setupCanvas() {
    /** renderer */
    this.renderer =
    new THREE.WebGLRenderer({
      antialias: true,
      alpha: true });

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