public static void RenderYAxisGrids(IRenderContext rc, IAxis yAxis, List <FeatureText> features, OxyColor gridcolor)
{
if (features == null || features.Count == 0)
{
double cell_height = yAxis.Bound.Height / 4;
if (cell_height <= 0)
{
return;
}
double y_start = yAxis.Bound.Top + cell_height;
IList <double> screen_ys = new List <double>();
while (y_start < yAxis.Bound.Bottom)
{
screen_ys.Add(y_start);
y_start += cell_height;
}
}
else
{
foreach (FeatureText value in features)
{
double y = value.SourcePosition.Y;
IList <ScreenPoint> sps = new List <ScreenPoint>();
ScreenPoint sp1 = new ScreenPoint(yAxis.Bound.Left, y);
ScreenPoint sp2 = new ScreenPoint(yAxis.Bound.Right, y);
sps.Add(sp1);
sps.Add(sp2);
rc.DrawLine(sps, gridcolor);
}
double y0 = yAxis.Transform(0);
if (y0 >= yAxis.Bound.Top && y0 <= yAxis.Bound.Bottom)
{
IList <ScreenPoint> sps = new List <ScreenPoint>();
ScreenPoint sp1 = new ScreenPoint(yAxis.Bound.Left, y0);
ScreenPoint sp2 = new ScreenPoint(yAxis.Bound.Right, y0);
sps.Add(sp1);
sps.Add(sp2);
rc.DrawLine(sps, gridcolor, 3);
}
}
}
