Thanks!
I need to rotate part of the image, why does it not work with putImageData?
for example:
<!DOCTYPE html>
<html>
<body>
<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.</canvas>
<script>
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.fillStyle="red";
ctx.fillRect(10,10,50,50);
var imgData=ctx.getImageData(30,30,50,50);
ctx.rotate(30*Math.PI/180);
ctx.putImageData(imgData,10,70);
</script>
</body>
</html>
Thank
Nadav