public void DrawArc(Pen pen, float x, float y, float width, float height, float startAngle, float sweepAngle)
{
StartDrawing();
var rect = TranslateView(new System.Drawing.RectangleF(x, y, width, height), true);
pen.Apply(this);
var yscale = rect.Height / rect.Width;
var centerY = RectangleFExtensions.GetMidY(rect);
var centerX = RectangleFExtensions.GetMidX(rect);
Control.ConcatCTM(new CGAffineTransform(1.0f, 0, 0, yscale, 0, centerY - centerY * yscale));
Control.AddArc(centerX, centerY, rect.Width / 2, Conversions.DegreesToRadians(startAngle), Conversions.DegreesToRadians(startAngle + sweepAngle), sweepAngle < 0);
Control.StrokePath();
EndDrawing();
}
