Canvas rotate

Developer
Anna
Size
1,880 Kb
Views
6,072
  1. Canvas rotate Previews
  2. Canvas rotate HTML Codes
  3. Canvas rotate CSS Codes
  4. Canvas rotate JS Codes

How do I make an canvas rotate?

What is a canvas rotate? How do you make a canvas rotate? This script and codes were developed by Anna on 01 December 2022, Thursday.

Canvas rotate Previews
IQ Test

Canvas rotate - Script Codes HTML Codes

<!DOCTYPE html>
<html >
<head> <meta charset="UTF-8"> <title>canvas rotate</title> <link rel="stylesheet" href="css/style.css">
</head>
<body> <canvas id='canvas' width='500' height='500'></canvas> <script src="js/index.js"></script>
</body>
</html>

Canvas rotate - Script Codes CSS Codes

canvas { background: #ccc;
}

Canvas rotate - Script Codes JS Codes

window.onload = function(){ var canvas = document.getElementById('canvas'); var ctx = canvas.getContext('2d'); // ctx.fillRect(0,0,100,100); // fillRect繪製後會自動加入beginPath ctx.rect(50,50,100,100); ctx.fill(); var num = 0; canvas.onclick = function(e){ var mx = e.layerX; var my = e.layerY; if( ctx.isPointInPath(mx,my) ) { setInterval(function(){ ctx.clearRect(0,0,500,500); num++; ctx.save(); ctx.beginPath(); ctx.translate(100,100); ctx.scale(Math.sin(num*Math.PI/180), Math.sin(num*Math.PI/180)); ctx.rotate(num*Math.PI/180); //繞著自己旋轉 ctx.translate(-50,-50); ctx.rect(0,0,100,100); ctx.fill(); ctx.restore(); },50) } }
}
Canvas rotate - Script Codes
Canvas rotate - Script Codes
Home Page Home
Developer Anna
Username AnnaLiu
Uploaded December 01, 2022
Rating 3
Size 1,880 Kb
Views 6,072
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