<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'>//<![CDATA[
window.onload=function(){
var myCanvas = document.getElementById("buffer");
var context = myCanvas.getContext('2d');
var myCanvas1 = document.createElement('canvas');
myCanvas1.width = myCanvas1.height = 100;
var newContext = myCanvas1.getContext('2d');
newContext.translate(30, 30);
newContext.rotate(0.5);
newContext.fillStyle = 'rgb(255, 0, 0)';
newContext.fillRect(-15, -15, 30, 30);
context.fillStyle = 'rgb(0, 255, 0)';
context.fillRect(30, 30, 30, 30);
context.drawImage(buffer, 50, 50);
}//]]>
</script>
</head>
<body>
<canvas id="buffer" width="100" height="100"></canvas>
</body>
</html>
【drawing_settings】
