QML canvas - Jagged lines

[econsysqtdev]

I'm using qt quick 2.0 on Linux to a draw around 360 lines within a circle with a difference of 1 degree between them. I observe that the lines are jagged when the interval is 1-10 degrees. I've tried enabling and disabling the anti-aliasing and smooth property. Has any one faced this before or is there any solution I'm missing ? Below is the sample code of the jagged lines. Also, please us the following link to view the screen shot of the jagged lines.link text

@
import QtQuick 2.0
Rectangle {
width: 400
height: 400
Canvas {
id:canvas
width: 400
height: 400
antialiasing: false
smooth: true
onPaint:
{
var ctx = canvas.getContext('2d');
ctx.save()

        // Make canvas all white
        ctx.beginPath();
        ctx.clearRect(0, 0, width, height);
        ctx.fill();

        var radius = Math.floor(canvas.width/2);
        ctx.fillStyle = "grey"
        ctx.rect(0,0,width,height)
        ctx.fill();  
        var begin = 0; var interval = 3;
        var arcSize= degreesToRadians(interval);
        var centerx = canvas.width/2
        var centery = canvas.height/2
        for(var startingAngle=begin; startingAngle < 360;)
        {
            ctx.beginPath();
            ctx.moveTo(canvas.width/2, centery);
            context.strokeStyle= "white"
            ctx.lineWidth=1.5;
            ctx.arc(centerx, centery, radius, degreesToRadians(startingAngle), startingAngle + arcSize, false);
            ctx.stroke();
            ctx.closePath();
            startingAngle = startingAngle + interval;
        }
    }
}

function degreesToRadians(degrees) {
    return (degrees * Math.PI)/180;
}

}
@

Any help is greatly appreciated.

--Narayanan K