A Pen by Ganesh Prasad on CodePen.
Created
January 16, 2022 13:43
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Matrix Effect
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canvas(id='canv', width=500, height=200) |
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const canvas = document.getElementById('canv'); | |
const ctx = canvas.getContext('2d'); | |
const w = canvas.width = document.body.offsetWidth; | |
const h = canvas.height = document.body.offsetHeight; | |
const cols = Math.floor(w / 20) + 1; | |
const ypos = Array(cols).fill(0); | |
ctx.fillStyle = '#000'; | |
ctx.fillRect(0, 0, w, h); | |
function matrix () { | |
ctx.fillStyle = '#0001'; | |
ctx.fillRect(0, 0, w, h); | |
ctx.fillStyle = '#0f0'; | |
ctx.font = '15pt monospace'; | |
ypos.forEach((y, ind) => { | |
const text = String.fromCharCode(Math.random() * 128); | |
const x = ind * 20; | |
ctx.fillText(text, x, y); | |
if (y > 100 + Math.random() * 10000) ypos[ind] = 0; | |
else ypos[ind] = y + 20; | |
}); | |
} | |
setInterval(matrix, 50); |
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body { | |
margin: 0; | |
height: 100vh; | |
width: 100vw; | |
} |
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