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  • Canvas drawImage API

    drawImage

    <!DOCTYPE html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <title>img</title>
    </head>
    
    <body>
        <canvas id='myCanvas' width='800' height='400'>
            your browser does not support canvas
        </canvas>
        <script type="text/javascript">
        var c = document.getElementById('myCanvas');
        var cxt = c.getContext('2d');
        var img = new Image();
        img.src = 'face.jpg';
        img.onload = function() {
            // 从10,10坐标开始绘制整个图片
            cxt.drawImage(img, 10, 10);
            // 从260,10开始把图片绘制到100x100的矩形区域内
            cxt.drawImage(img, 260, 10, 100, 100);
            // 截取图片50,50到100,100的区域,从260,130开始,绘制到100x100区域内
            cxt.drawImage(img, 50, 50, 100, 100, 260, 130, 100, 100);
        };
        </script>
    </body>
    
    </html>
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  • 原文地址:https://www.cnblogs.com/stono/p/4667696.html
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