Ch.Epyx.WindMobile.WP7.View.WindChartControl.OnChartPointsChanged C# (CSharp) Method

        public static void OnChartPointsChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
        {
            WindChartControl charControl = d as WindChartControl;
            GeometryGroup myGeometryGroup = new GeometryGroup();
            var values = e.NewValue as List<IChartPoint>;

            double radius = 0;
            double lineRadius = charControl.DrawCanvas.ActualWidth / 2;
            double radiusStep = lineRadius / values.Count;
            // The center
            double lastX = (double)(charControl.DrawCanvas.ActualWidth / 2.0);
            double lastY = (double)(charControl.DrawCanvas.ActualHeight / 2.0);

            foreach (var value in values)
            {
                radius += radiusStep;

                double pointOffsetX = (charControl.DrawCanvas.ActualWidth - 2.0 * radius) / 2.0;
                double pointOffsetY = (charControl.DrawCanvas.ActualHeight - 2.0 * radius) / 2.0;

                double circleX = Math.Cos(GetAngleInRadian(value)) * radius;
                double circleY = Math.Sin(GetAngleInRadian(value)) * radius;

                float x = (float)(pointOffsetX + radius - circleX);
                float y = (float)(pointOffsetY + radius - circleY);

                myGeometryGroup.Children.Add(new LineGeometry() { StartPoint = new Point(lastX, lastY), EndPoint = new Point(x, y) });

                lastX = x;
                lastY = y;
            }

            (d as WindChartControl).LinePath.Data = myGeometryGroup;
        }