How to refine strokes of an inkpresenter WP8

Question

I'm using ink presenter to draw the strokes. But the problem is while drawing curved lines, its draws jagged lines.. Straight lines do not have a problem. This is how I have done.. I dont know where to make changes so as to make the lines smoother.

    private void MyIP_MouseLeftButtonDown(object sender, MouseEventArgs e)
    {
        MyIP.CaptureMouse();

        DrawingAttributes att = new DrawingAttributes();
        att.Color = CB;
        att.Width = StrokeWidth;
        att.Height = StrokeWidth;


        if (bErase == true)
        {
            StylusPointCollection ErasePointCollection = new StylusPointCollection();
            ErasePointCollection.Add(e.StylusDevice.GetStylusPoints(MyIP));
            lastPoint = ErasePointCollection[ErasePointCollection.Count - 1];
            EraseStroke = new Stroke(ErasePointCollection);

            EraseStroke.DrawingAttributes = att;

        }
        else
        {
            StylusPointCollection MyStylusPointCollection = new StylusPointCollection();
            MyStylusPointCollection.Add(e.StylusDevice.GetStylusPoints(MyIP));
            NewStroke = new Stroke(MyStylusPointCollection);

            NewStroke.DrawingAttributes = att;

            MyIP.Strokes.Add(NewStroke);
        }
    }

    //StylusPoint objects are collected from the MouseEventArgs and added to MyStroke. 
    private void MyIP_MouseMove(object sender, MouseEventArgs e)
    {
        if (bErase == true)
        {
            //StylusPointCollection pointErasePoints = e.StylusDevice.GetStylusPoints(MyIP);
            //EraseStroke.StylusPoints.Add(e.StylusDevice.GetStylusPoints(MyIP));

            //pointErasePoints.Insert(0, lastPoint);
            //StrokeCollection hitStrokes = MyIP.Strokes.HitTest(pointErasePoints);
            //if (hitStrokes.Count > 0)
            //{
            //    foreach (Stroke hitStroke in hitStrokes)
            //    {

            //        ////For each intersecting stroke, split the stroke into two while removing the intersecting points.
            //        ProcessPointErase(hitStroke, pointErasePoints);
            //    }
            //}
            //lastPoint = pointErasePoints[pointErasePoints.Count - 1];

            //STROKEERASE METHOD

            StylusPointCollection pointErasePoints = e.StylusDevice.GetStylusPoints(MyIP);
            StrokeCollection hitStrokes = MyIP.Strokes.HitTest(pointErasePoints);
            if (hitStrokes.Count > 0)
            {
                foreach (Stroke hitStroke in hitStrokes)
                {
                    MyIP.Strokes.Remove(hitStroke);
                    undoStack.Push(hitStroke);
                    undoStateBufferStack.Push(true);
                }
            }

        }

        if (NewStroke != null)
            NewStroke.StylusPoints.Add(e.StylusDevice.GetStylusPoints(MyIP));

    }

    //MyStroke is completed
    private void MyIP_LostMouseCapture(object sender, MouseEventArgs e)
    {
        if (NewStroke != null)
        {
            undoStack.Push(NewStroke);
            undoStateBufferStack.Push(false);
        }

        EraseStroke = null;
        NewStroke = null;

    }

    //Set the Clip property of the inkpresenter so that the strokes
    //are contained within the boundary of the inkpresenter
    private void SetBoundary()
    {
        RectangleGeometry MyRectangleGeometry = new RectangleGeometry();
        MyRectangleGeometry.Rect = new Rect(0, 0, MyIP.ActualWidth, MyIP.ActualHeight);
        MyIP.Clip = MyRectangleGeometry;
    }

Answer 1

You can find the sample source code describing ink presenter in this Download link

. Please find the download tag. Also it contains plenty other samples which helps you to learn windows phone deeper.