canvas实现粒子文字交互聚集消散动画效果代码-html代码-BFW代码库

canvas实现粒子文字交互聚集消散动画效果代码

代码语言：html

所属分类：粒子

代码描述：canvas实现粒子文字交互聚集消散动画效果代码

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>
    *, *::before, *::after{
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html{ font-size: 10px; }

html, body{
  display: block;
  position: relative;
  width: 100%;
  height: 100%;
}

canvas{
  display: block;
  cursor: crosshair;
}
</style>

</head>

<body>
    <!-- partial:index.partial.html -->
    <canvas></canvas>
    <!-- partial -->
    <script >
        (function (universe) {

  ///////////////////////////////////////////////////////////////////////////////
  // HEAVILY INSPIRED BY: https://codepen.io/ImagineProgramming/full/LpOJzM    //
  //                                                                           //
  // HERE ARE SOME TRULY AMAZING RESOURCES I USED TO LEARN ABOUT PERLIN NOISE: //
  // https://www.scratchapixel.com/                                            //
  // http://staffwww.itn.liu.se/~stegu/simplexnoise/simplexnoise.pdf           //
  ///////////////////////////////////////////////////////////////////////////////

  function perlinSmooth(t) {return t * t * t * (10 + (6 * t - 15) * t);}

  function lerp(t, v0, v1) {return v0 * (1 - t) + v1 * t;}

  class Vec3D {

    constructor(x = 0, y = 0, z = 0) {
      this.x = x;
      this.y = y;
      this.z = z;
      return this;
    }

    dot(x, y, z) {return this.x * x + this.y * y + this.z * z;}}



  const Perlin3D = function () {

    //private constants
    const _scrambledIndexes = [151, 160, 137, 91, 90, 15, 131, 13, 201, 95, 96, 53, 194, 233, 7, 225, 140, 36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23, 190, 6, 148, 247, 120, 234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32, 57, 177, 33, 88, 237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, 74, 165, 71, 134, 139, 48, 27, 166, 77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133, 230, 220, 105, 92, 41, 55, 46, 245, 40, 244, 102, 143, 54, 65, 25, 63, 161, 1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169, 200, 196, 135, 130, 116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64, 52, 217, 226, 250, 124, 123, 5, 202, 38,.........完整代码请登录后点击上方下载按钮下载查看