canvas 도형의 이동, 회전, 확대



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<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <meta name="viewport" 
          content="width=device-width, height=device-height, 
                     minimum-scale=1.0, maximum-scale=1.0, initial-scale=1.0">
    <title>Insert title here</title>
    <script type="text/javascript">
    window.onload = function(){
        var canvas = document.getElementById("canvas");
        if(canvas.getContext){
            var draw = canvas.getContext("2d");
            
            draw.beginPath();
            draw.fillStyle = "green";
            //translate(이동할 x거리, 이동할 y거리) : 기준점 이동
            draw.translate(100,0);
            //rotate(deg) : 시계방향 회전
            draw.rotate(Math.PI*0.25);
            //scale(가로비율, 세로비율) : 확대/축소
            draw.scale(2,1);
            draw.fillRect(0,0,100,100);
        }
    }
    </script>
</head>
 
<body>
    <canvas id="canvas" width="300px" height="400px"></canvas>
</body>
</html>
cs



결과

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