粒子文字特效动画-html代码-BFW代码库

粒子文字特效动画

代码语言：html

所属分类：粒子

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>
  html, body {
  height: 100%;
  background: black;
}
</style>

</head>
<body translate="no">

<script type="text/javascript" src="http://repo.bfw.wiki/bfwrepo/js/dat.gui-min.js"></script>
<script>
      "use strict";

const {
  abs,
  acos,
  asin,
  atan,
  atan2,
  ceil,
  cos,
  floor,
  max,
  min,
  PI,
  pow,
  random,
  round,
  sin,
  sqrt,
  tan } =
Math;
const HALF_PI = 0.5 * PI;
const QUART_PI = 0.25 * PI;
const TAU = 2 * PI;
const TO_RAD = PI / 180;
const G = 6.67 * pow(10, -11);
const EPSILON = 2.220446049250313e-16;
const rand = n => n * random();
const randIn = (_min, _max) => rand(_max - _min) + _min;
const randRange = n => n - rand(2 * n);
const fadeIn = (t, m) => t / m;
const fadeOut = (t, m) => (m - t) / m;
const fadeInOut = (t, m) => {
  let hm = 0.5 * m;
  return abs((t + hm) % m - hm) / hm;
};
const dist = (x1, y1, x2, y2) => sqrt(pow(x2 - x1, 2) + pow(y2 - y1, 2));
const angle = (x1, y1, x2, y2) => atan2(y2 - y1, x2 - x1);
const lerp = (a, b, t) => (1 - t) * a + t * b;
const clamp = (n, _min, _max) => min(max(n, _min), _max);
const norm = (n, _min, _max) => (n - _min) / (_max - _min);
const fract = n => n - (n | 0);
const vh = p => p * window.innerHeight * 0.01;
const vw = p => p * window.innerWidth * 0.01;
const vmin = p => min(vh(p), vw(p));
const vmax = p => max(vh(p), vw(p));
const intToRGBA = n => {
  let r, g, b, a;

  n >>>= 0;

  r = (n & 0xff000000) >>> 24;
  g = (n & 0xff0000) >>> 16;
  b = (n & 0xff00) >>> 8;
  a = (n & 0xff) / 255;

  return `rgba(${[r, g, b, a].join()})`;
};
const drawTypes = {
  FILL: 'fill',
  STROKE: 'stroke' .........完整代码请登录后点击上方下载按钮下载查看