canvas星空背景

凉风听雪

于 2024-07-24 11:49:07 发布

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分类专栏：前端开发文章标签： javascript 开发语言 ecmascript canvas css 网站开发

本文链接：https://blog.youkuaiyun.com/p_s_p/article/details/140658699

单星空显示：

<!DOCTYPE html>  
<html lang="en">  
<head>  
<meta charset="UTF-8">  
<meta name="viewport" content="width=device-width, initial-scale=1.0">  
<title>Starry Sky</title>  
<style>  
  body, html {  
    margin: 0;  
    padding: 0;  
    width: 100%;  
    height: 100%;  
    overflow: hidden;  
  }  
  canvas {  
    display: block;  
    background: #000;  
  }  
</style>  
</head>  
<body>  
<canvas id="starCanvas"></canvas>  
<script>
const canvas = document.getElementById('starCanvas');  
const ctx = canvas.getContext('2d');  
  
canvas.width = window.innerWidth;  
canvas.height = window.innerHeight;  
  
class Star {  
  constructor(x, y, size, speed) {  
    this.x = x;  
    this.y = y;  
    this.size = size;  
    this.speed = speed; // 注意：这里的speed现在是像素/秒，用于控制星星横向移动的速度  
  }  
  
  draw() {  
    ctx.beginPat