public SkyLabel(RenderContext11 renderContext, double ra, double dec, string text, LabelSytle style, double distance)
{
RA = ra;
Dec = dec;
Text = text;
Style = style;
Distance = distance;
if (texture == null)
{
texture = Texture11.FromBitmap(Properties.Resources.circle, 0);
}
Vector3d up = new Vector3d();
Vector3d textPos = new Vector3d();
if (Earth3d.MainWindow.SolarSystemMode)
{
pos = Coordinates.RADecTo3d(ra, -dec, distance);
up = Coordinates.RADecTo3d(ra, -dec + 90, distance);
pos.RotateX(Coordinates.MeanObliquityOfEcliptic(SpaceTimeController.JNow) / 180.0 * Math.PI);
pos.Add(Planets.GetPlanet3dLocation(SolarSystemObjects.Earth));
up.RotateX(Coordinates.MeanObliquityOfEcliptic(SpaceTimeController.JNow) / 180.0 * Math.PI);
up.Add(Planets.GetPlanet3dLocation(SolarSystemObjects.Earth));
}
else
{
pos = Coordinates.RADecTo3d(ra + 12, dec, distance);
textPos = Coordinates.RADecTo3d(ra + 12, dec + 2, distance);
up = Coordinates.RADecTo3d(ra + 12, dec + 92, distance);
}
center = new Vector3(9, 9, 0);
textBatch = new Text3dBatch(24);
if (style == LabelSytle.Telrad)
{
// Telrad-style labels are always screen-aligned
Text3d t3 = new Text3d(new Vector3d(0, 0, 0.1), new Vector3d(0, 1, 0), text, 20, .01);
t3.alignment = Text3d.Alignment.Left;
textBatch.Add(t3);
}
else
{
up.Normalize();
textPos.Normalize();
textBatch.Add(new Text3d(textPos, up, text, 20, .0005));
}
}