three实现三维彩色粒子喷射动画效果代码-html代码-BFW代码库

代码语言：html

所属分类：粒子

代码描述：three实现三维彩色粒子喷射动画效果代码

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;
}
#container canvas {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 0;
  outline: none;
}
/** 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/three.126.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/OrbitControls.126.js"></script>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/Stats-16.js"></script>
      <script>



//const simplex = new SimplexNoise();

/**
 * Referenced | https://al-ro.github.io/
 * Thank you so much :)
 */
/*
const computeCurl = (x, y, z) => {
  const eps = 0.0001;
  const curl = new THREE.Vector3();
  
  //Find rate of change in YZ plane
  let n1 = simplex.noise3D(x, y + eps, z); 
  let n2 = simplex.noise3D(x, y - eps, z); 
  //Average to find approximate derivative
  let a = (n1 - n2)/(2 * eps);
  n1 = simplex.noise3D(x, y, z + eps); 
  n2 = simplex.noise3D(x, y, z - eps); 
  //Average to find approximate derivative
  let b = (n1 - n2)/(2 * eps);
  curl.x = a - b;

  //Find rate of change in XZ plane
  n1 = simplex.noise3D(x, y, z + eps); 
  n2 = simplex.noise3D(x, y, z - eps); 
  a = (n1 - n2)/(2 * eps);
  n1 = simplex.noise3D(x + eps, y, z); 
  n2 = simplex.noise3D(x + eps, y, z); 
  b = (n1 - n2)/(2 * eps);
  curl.y = a - b;

  //Find rate of change in XY plane
  n1 = simplex.noise3D(x + eps, y, z); 
  n2 = simplex.noise3D(x - eps, y, z); 
  a = (n1 - n2)/(2 * eps);
  n1 = simplex.noise3D(x, y + eps, z); 
  n2 = simplex.noise3D(x, y - eps, z); 
  b = (n1 - n2)/(2 * eps);
  curl.z = a - b;

  return curl;
}
*/

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

varying vec2 vUv;
varying vec3 vPosition;

float PI = 3.14159265359;

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

`;

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

varying vec2 vUv;
varying vec3 vPosition;

/**
 * Referenced | https://iquilezles.org/www/articles/palettes/palettes.htm
 * Thank you so much :)
 */
vec3 pal( in float t, in vec3 a, in vec3 b, in vec3 c, in vec3 d ) {
  return a + b*cos( 6.28318*(c*t+d) );
}

/**
 * Referenced | https://thebookofshaders.com/10/?lan=jp
 * Thank you so much.
 */

float random (vec2 st) {
    return fract(sin(dot(st.xy,
                         vec2(12.9898,78.233)))*
        43758.5453123);
}

void main () {
  float dash = sin(vUv.x * 50.0 - uTime * 5.0);
  if (dash < random(vPosition.xz)) discard;
  vec3 col =
    pal(
      distance(vPosition, vec3(0, 0, 0)) - uTime * 0.5,
      vec3(0.5,0.5,0.5),vec3(0.5,0.5,0.5),vec3(1.0,1.0,1.0),vec3(0.0,0.10,0.20)
    );
  gl_FragColor = vec4(col, 1.0);
}

`;

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

    document.getElementById('container').appendChild(this.renderer.domElement);

    this.statsInit();
    //this.setupGui();
    this.init();
  }

  statsInit() {
    this.stats = new Stats();
    this.stats.setMode(0);
    this.s.........完整代码请登录后点击上方下载按钮下载查看