js实现一个canvas粒子流动动画效果代码
代码语言:html
所属分类:粒子
代码描述:js实现一个canvas粒子流动动画效果代码,点击可改变流动的方向。
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>
<head>
<meta charset="utf-8">
<style>
html, body {
overflow: hidden;
margin: 0;
padding: 0;
width: 100%;
height: 100%;
background:#000;
touch-action: none;
content-zooming: none;
}
canvas {
position: absolute;
width: 100%;
height: 100%;
background:#000;
cursor: pointer;
}
</style>
</head>
<body>
<div></div>
<script>
"use strict";
{
const perlin = {
init () {
this.p = new Uint8Array(512);
this.reset();
},
reset() {
for (let i = 0; i < 512; ++i) {
this.p[i] = Math.random() * 256;
}
},
lerp(t, a, b) {
return a + t * (b - a);
},
grad2d(i, x, y) {
const v = (i & 1) === 0 ? x : y;
return (i & 2) === 0 ? -v : v;
},
noise2d(x2d, y2d) {
const X = Math.floor(x2d) & 255;
.........完整代码请登录后点击上方下载按钮下载查看
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