d3实现鱼群游动前行粒子效果代码-html代码-BFW代码库

d3实现鱼群游动前行粒子效果代码

代码语言：html

所属分类：粒子

代码描述：d3实现鱼群游动前行粒子效果代码

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 {
  height: 100vh;
  background: #333;
  display:flex;
  align-items: center;
}

svg {
  max-height:500px;
  background: radial-gradient(
    circle,
    rgba(255, 255, 255, 1) 3%,
    rgba(1, 118, 142, 1) 100%
  );
}
</style>




</head>

<body>
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/d3.js"></script>
      <script type="module">

class Vector {
    constructor(x, y) {
        this.x = x;
        this.y = y;
        this.max = null;
    }
    setLength(newLength) {
        const length = Math.sqrt(this.x * this.x + this.y * this.y);
        this.x *= newLength / length;
        this.y *= newLength / length;
    }
    add(vector) {
        this.x += vector.x;
        this.y += vector.y;
    }
    sub(vector) {
        this.x -= vector.x;
        this.y -= vector.y;
    }
    mul(val) {
        this.x *= val;
        this.y *= val;
    }
    div(val) {
        if (val != 0) {
            this.x /= val;
            this.y /= val;
        }
    }
    checkMax() {.........完整代码请登录后点击上方下载按钮下载查看