private void DrawLabels(CGContext context, IViewPort viewPort, IXAxis xAxis, nfloat positionY, nfloat axisLineStart, nfloat axisLineEnd, TextStyle textStyle, List <Tuple <double, string> > labels)
{
foreach (var label in labels)
{
var labelX = xAxis.GetContentValue(label.Item1);
var viewPortPositionX = viewPort.DisplayPositionX((nfloat)labelX);
if (viewPortPositionX >= axisLineStart && viewPortPositionX <= axisLineEnd)
{
DrawLabel(context, label.Item2, new CGPoint(viewPortPositionX, positionY), textStyle);
}
}
}
