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首頁javascriptpatternCanvas - 如何從另一個畫布創(chuàng)建模式

Canvas - 如何從另一個畫布創(chuàng)建模式

我們想知道如何從另一個畫布創(chuàng)建模式。


<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'>//<![CDATA[ 
window.onload=function(){
    var mainCanvas = document.getElementById('mainCanvas');
    var textureCanvas = document.getElementById('textureCanvas');
    var mainContext = mainCanvas.getContext('2d');
    var textureContext = textureCanvas.getContext('2d');
    textureContext.fillStyle = 'grey';
    textureContext.fillRect(0, 0, 1, 1);
    textureContext.fillStyle = 'lightgrey';
    textureContext.fillRect(1, 0, 1, 1);
    textureContext.fillStyle = 'grey';
    textureContext.fillRect(2, 0, 1, 1);
    var pattern = mainContext.createPattern(textureCanvas, 'repeat');
    mainContext.fillStyle = pattern;
    mainContext.fillRect(0, 0, 198, 99);
}//]]>  
</script>
</head>
<body>
  <canvas id="mainCanvas" width="200" height="200"/>
  <canvas id="textureCanvas" width="3" height="1"></canvas>
</body>
</html>