黑客帝國、亂雨紛飛效果
阿新 • • 發佈:2019-01-05
1、linux下實現: 執行如下兩條命令即可 sudo apt-get install cmatrix cmatrix
效果圖如下:
2、JS實現,吧如下程式碼儲存成HTML執行,即可 <!DOCTYPE html>
<html>
<head>
<title>黑客帝國效果</title>
</head>
<body>
<canvas id="canvas"></canvas>
<style type="text/css">body{margin: 0; padding: 0; overflow: hidden;}</style>
<script type="text/javascript">
var canvas = document.getElementById('canvas');
var ctx = canvas.getContext('2d');
canvas.height = window.innerHeight;
canvas.width = window.innerWidth;
var texts = '0123456789'.split('');
var fontSize = 16;
var columns = canvas.width/fontSize;
// 用於計算輸出文字時座標,所以長度即為列數
var drops = []; //初始值
for(var x = 0; x < columns; x++){
drops[x] = 1;
}
function draw(){
//讓背景逐漸由透明到不透明
ctx.fillStyle ='rgba(0, 0, 0, 0.05)';
ctx.fillRect(0, 0, canvas.width, canvas.height);
//文字顏色
ctx.fillStyle = '#0F0';
ctx.font = fontSize + 'px arial';
//逐行輸出文字
for(var i = 0; i < drops.length; i++){
var text = texts[Math.floor(Math.random()*texts.length)];
ctx.fillText(text, i*fontSize, drops[i]*fontSize);
if(drops[i]*fontSize > canvas.height || Math.random() > 0.95){
drops[i] = 0;
}
drops[i]++;
}
}
setInterval(draw, 33);
</script>
</body>
效果圖如下:
效果圖如下: