private void DrawDecLineCollection(Graphics g, FrameLine frameLine)
{
if (frameLine.Collection.Count > 1)
{
var position = frameLine.Collection.FirstOrDefault(x => x.X > 0 && x.Y > 0);
if (position != null)
{
var text = $"{string.Format("{0:N2}", frameLine.Angle.Degree)}°";
var size = g.MeasureString(text, gridAnnotationFont);
g.DrawString(text, gridAnnotationFont, gridAnnotationBrush, (position.X), (position.Y));
}
DrawFrameLineCollection(g, frameLine);
}
}
private void DrawFrameLineCollection(Graphics g, FrameLine frameLine)
{
var points = CardinalSpline(frameLine.Collection, 0.5f, frameLine.Closed);
if (frameLine.StrokeThickness != 1)
{
using (var pen = new System.Drawing.Pen(gridPen.Color, frameLine.StrokeThickness)) {
g.DrawBeziers(pen, points.ToArray());
}
}
else
{
g.DrawBeziers(gridPen, points.ToArray());
}
}
private void DrawRALineCollection(Graphics g, FrameLine frameLine)
{
if (frameLine.Collection.Count > 1)
{
//Prevent annotations to overlap on southern pole
var southPole = new Coordinates(0, -MAXDEC, Epoch.J2000, Coordinates.RAType.Degrees).XYProjection(currentViewport);
PointF?position = frameLine.Collection.FirstOrDefault(x => x.X > 0 && x.Y > 0 && x.X < currentViewport.Width && x.Y < currentViewport.Height && Math.Abs(x.X - southPole.X) > 5 && Math.Abs(x.Y - southPole.Y) > 5);
if (position != null)
{
var hms = Astrometry.HoursToHMS(frameLine.Angle.Hours);
var text = $"{hms.Substring(0, hms.Length - 3)}h";
var size = g.MeasureString(text, gridAnnotationFont);
g.DrawString(text, gridAnnotationFont, gridAnnotationBrush, (position.Value.X), Math.Max(0, (position.Value.Y - size.Height)));
}
DrawFrameLineCollection(g, frameLine);
}
}
