canvas-0translate.html

时间：2021-08-25 08:59:05
<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>Document</title>

</head>

<body>

    <canvas id="canvas" style="margin:0 auto;border:1px #ddd solid">

        The current browser does not support Canvas, can replace the browser a try!

    </canvas>

    <script>

        window.onload = function(){

            var canvas = document.getElementById('canvas');

            canvas.width = 1024;

            canvas.height = 768;

            if(canvas.getContext('2d')){

                var context = canvas.getContext('2d');

                context.save();

                    context.fillStyle = "red";

                    context.translate(100,100);

                    context.fillRect(0,0,400,400);

                context.restore();

                context.save();

                    context.fillStyle = "green";

                    context.translate(300,300);

                    context.fillRect(0,0,400,400);

                context.restore();

            }else{

                alert('当前游览器不支持Canvas，请更换游览器后再试！');

            }

        }

    </script>

</body>

<script>

    /*图形变换

        位移 translate(x,y)

        旋转 rotate(deg)

        缩放 scale(sx,sy)

    */

</script>

</html>

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