canvas黑洞吸引周边粒子动画效果代码-html代码-BFW代码库

canvas黑洞吸引周边粒子动画效果代码

代码语言：html

所属分类：粒子

代码描述：canvas黑洞吸引周边粒子动画效果代码

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>
        @import url("https://fonts.googleapis.com/css?family=Arvo:700");
        body {  font-family: "Arvo", serif;  background: black;}
        body:after { 
            content: "black hole"; 
        position: absolute;  
        color: rgba(255, 255, 255, 0.1);  
        z-index: 2;  
        -webkit-transform: rotate(90deg) translateX(-18vh);         
        transform: rotate(90deg) translateX(-18vh); 
        -webkit-transform-origin: 0% 100%;          
        transform-origin: 0% 100%; 
        white-space: nowrap;  
        top: 0; 
        left: 0;  
        font-size: 18vh;}
        svg {  position: absolute;}
    </style>
</head>

<body>
    <script>
        console.clear();
let screenWidth, screenHeight, smallerSize;

const Z_RANGE = 100; // How deep is your love
const Z_VELOCITY = -0.0025; // How fast 
const STARS_COUNT = 2000; // How many

const setSizes = () => {
  screenWidth = window.innerWidth;
  screenHeight = window.innerHeight;
  smallerSize = screenWidth > screenHeight ? screenHeight : screenWidth;
}
setSizes();

const HOLE = {
  x: screenWidth / 2,
  y: screenHeight / 2,
  r: smallerSize / 4
};

class Star {
  constructor() {
    this.reset();
  }
  reset() {
    this.x = 1 - Math.random() * 2;
    this.y = 1 - Math.random() * 2;
    this.z = Math.random() * -Z_RANGE;
    this.xPos = 0;
    this.yPos = 0;
    this.angle = 0.001;
  };
  getPosition() {
      this.x = this.x * Math.cos(this.angle.........完整代码请登录后点击上方下载按钮下载查看