private static void MakePrecessionChart()
{
double obliquity = Coordinates.MeanObliquityOfEcliptic(SpaceTimeController.JNow);
Matrix3d mat = Matrix3d.RotationX((obliquity / 360.0 * (Math.PI * 2)));
Color col = Colors.White;
if (precLineList == null)
{
precLineList = new SimpleLineList();
precLineList.DepthBuffered = false;
for (double l = 0; l < 360; l++)
{
double b = 90 - obliquity;
precLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l + 1) / 15, b, 1), mat));
}
for (double l = -12000; l < 13000; l += 2000)
{
double b = 90 - obliquity;
double p = -((l - 2000) / 25772 * 24) - 6;
precLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p, b - .5, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p, b + .5, 1), mat));
}
}
if (PrecTextBatch == null)
{
PrecTextBatch = new Text3dBatch(50);
int index = 0;
for (double l = -12000; l < 13000; l += 2000)
{
double b = 90 - obliquity + 3;
double p = -((l - 2000) / 25772 * 24) - 6;
string text = l.ToString();
if (l == 0)
{
b = 90 - obliquity + 2;
text = "1 CE";
}
else if (l < 0)
{
text = " " + (Math.Abs(l).ToString()) + " BCE";
}
else
{
text = (Math.Abs(l).ToString()) + " CE";
}
if (text.Length == 9)
{
text = " " + text;
}
PrecTextBatch.Add(new Text3d(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p + .01, b, 1), mat), text, 75, .00015));
}
}
return;
}
private void DrawSingleConstellation(RenderContext renderContext, Lineset ls, float opacity)
{
bool reverse = false;
Place centroid = ConstellationCentroids[ls.Name];
if (centroid != null)
{
Vector3d pos = Coordinates.RADecTo3d(reverse ? -centroid.RA - 6 : centroid.RA, reverse ? centroid.Dec : centroid.Dec);
if (Vector3d.Dot(renderContext.ViewPoint, pos) < maxSeperation)
{
return;
}
}
if (!constellationVertexBuffers.ContainsKey(ls.Name))
{
int count = ls.Points.Count;
SimpleLineList linelist = new SimpleLineList();
linelist.DepthBuffered = false;
constellationVertexBuffers[ls.Name] = linelist;
Vector3d currentPoint = new Vector3d();
Vector3d temp;
for (int i = 0; i < count; i++)
{
if (ls.Points[i].PointType == PointType.Move || i == 0)
{
currentPoint = Coordinates.RADecTo3d(ls.Points[i].RA, ls.Points[i].Dec);
}
else
{
temp = Coordinates.RADecTo3d(ls.Points[i].RA, ls.Points[i].Dec);
linelist.AddLine(currentPoint, temp);
currentPoint = temp;
}
}
if (boundry)
{
temp = Coordinates.RADecTo3d(ls.Points[0].RA, ls.Points[0].Dec);
linelist.AddLine(currentPoint, temp);
}
}
string col = "red";
if (boundry)
{
if (constToDraw != ls.Name)
{
col = Settings.GlobalSettings.ConstellationBoundryColor;
}
else
{
col = Settings.GlobalSettings.ConstellationSelectionColor;
}
}
else
{
col = Settings.GlobalSettings.ConstellationFigureColor;
}
constellationVertexBuffers[ls.Name].DrawLines(renderContext, opacity, Color.Load(col));
}
public static bool DrawAltAzGrid(RenderContext renderContext, float opacity, Color drawColor)
{
Coordinates zenithAltAz = new Coordinates(0, 0);
Coordinates zenith = Coordinates.HorizonToEquitorial(zenithAltAz, SpaceTimeController.Location, SpaceTimeController.Now);
double raPart = -((zenith.RA + 6) / 24.0 * (Math.PI * 2));
double decPart = -(((zenith.Dec)) / 360.0 * (Math.PI * 2));
string raText = Coordinates.FormatDMS(zenith.RA);
Matrix3d mat = Matrix3d.RotationY((float)-raPart);
mat.Multiply(Matrix3d.RotationX((float)decPart));
mat.Invert();
if (altAzLineList == null)
{
altAzLineList = new SimpleLineList();
altAzLineList.DepthBuffered = false;
for (double l = 0; l < 360; l += 10)
{
for (double b = -80; b < 80; b += 2)
{
altAzLineList.AddLine(Coordinates.RADecTo3dAu(l / 15, b, 1), Coordinates.RADecTo3dAu(l / 15, b + 2, 1));
}
}
for (double b = -80; b <= 80; b += 10)
{
for (double l = 0; l < 360; l += 5)
{
altAzLineList.AddLine(Coordinates.RADecTo3dAu(l / 15, b, 1), Coordinates.RADecTo3dAu((l + 5) / 15, b, 1));
}
}
int counter = 0;
for (double l = 0; l < 360; l += 1)
{
double b = 0.25;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
b = .5;
break;
}
counter++;
altAzLineList.AddLine(Coordinates.RADecTo3dAu(l / 15, b, 1), Coordinates.RADecTo3dAu(l / 15, -b, 1));
}
counter = 0;
for (double l = 0; l < 360; l += 90)
{
counter = 0;
for (double b = -80; b <= 80; b += 1)
{
double width = 0.5 / 2;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5;
break;
}
counter++;
altAzLineList.AddLine(Coordinates.RADecTo3dAu((l + width) / 15, b, 1), Coordinates.RADecTo3dAu((l - width) / 15, b, 1));
}
}
}
Matrix3d matOldWorld = renderContext.World.Clone();
Matrix3d matOldWorldBase = renderContext.WorldBase.Clone();
renderContext.WorldBase = Matrix3d.MultiplyMatrix(mat, renderContext.World);
renderContext.World = renderContext.WorldBase.Clone();
renderContext.MakeFrustum();
altAzLineList.ViewTransform = Matrix3d.InvertMatrix(mat);
altAzLineList.DrawLines(renderContext, opacity, drawColor);
renderContext.WorldBase = matOldWorldBase;
renderContext.World = matOldWorld;
renderContext.MakeFrustum();
return(true);
}
public static bool DrawEquitorialGrid(RenderContext renderContext, float opacity, Color drawColor)
{
if (equLineList == null)
{
equLineList = new SimpleLineList();
equLineList.DepthBuffered = false;
for (double hour = 0; hour < 24; hour++)
{
for (double dec = -80; dec < 80; dec += 2)
{
equLineList.AddLine(Coordinates.RADecTo3dAu(hour, dec, 1), Coordinates.RADecTo3dAu(hour, dec + 2, 1));
}
}
for (double dec = -80; dec <= 80; dec += 10)
{
for (double hour = 0; hour < 23.8; hour += .2)
{
equLineList.AddLine(Coordinates.RADecTo3dAu(hour, dec, 1), Coordinates.RADecTo3dAu(hour + .2, dec, 1));
//todo fix for color bright
}
}
int counter = 0;
for (double ra = 0; ra < 24; ra += .25)
{
double dec = 0.5;
switch (counter % 4)
{
case 0:
counter++;
continue;
case 3:
case 1:
dec = .25;
break;
}
counter++;
equLineList.AddLine(Coordinates.RADecTo3dAu(ra, dec, 1), Coordinates.RADecTo3dAu(ra, -dec, 1));
}
counter = 0;
for (double ra = 0; ra < 24; ra += 3)
{
counter = 0;
for (double dec = -80; dec <= 80; dec += 1)
{
double width = 0.5 / 30;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5 / 15;
break;
}
counter++;
equLineList.AddLine(Coordinates.RADecTo3dAu(ra + width, dec, 1), Coordinates.RADecTo3dAu(ra - width, dec, 1));
}
}
}
equLineList.DrawLines(renderContext, opacity, drawColor);
return(true);
}
public static bool DrawEcliptic(RenderContext renderContext, float opacity, Color drawColor)
{
Color col = drawColor;
int year = SpaceTimeController.Now.GetUTCFullYear();
if (eclipticOverviewLineList == null || year != EclipticYear)
{
if (eclipticOverviewLineList != null)
{
eclipticOverviewLineList.Clear();
eclipticOverviewLineList = null;
}
EclipticYear = year;
double obliquity = Coordinates.MeanObliquityOfEcliptic(SpaceTimeController.JNow);
Matrix3d mat = Matrix3d.RotationX((-obliquity / 360.0 * (Math.PI * 2)));
double daysPerYear = 365.25;
if (DT.IsLeap(year, true))
{
monthDays[1] = 29;
daysPerYear = 366;
}
else
{
monthDays[1] = 28;
daysPerYear = 365;
}
int count = 2 * (int)daysPerYear;
EclipticCount = (int)daysPerYear;
double jYear = SpaceTimeController.UtcToJulian(new Date(year, 0, 1, 12, 0, 0));
int index = 0;
double d = 0;
eclipticOverviewLineList = new SimpleLineList();
eclipticOverviewLineList.DepthBuffered = false;
for (int m = 0; m < 12; m++)
{
int daysThisMonth = (int)monthDays[m];
for (int i = 0; i < daysThisMonth; i++)
{
AstroRaDec sunRaDec = Planets.GetPlanetLocationJD("Sun", jYear);
COR sunEcliptic = CT.Eq2Ec(sunRaDec.RA, sunRaDec.Dec, obliquity);
d = sunEcliptic.X;
double width = .005f;
if (i == 0)
{
width = .01f;
}
double dd = d;// +180;
eclipticOverviewLineList.AddLine(
Vector3d.TransformCoordinate(Vector3d.Create((Math.Cos((dd * Math.PI * 2.0) / 360)),
width,
(Math.Sin((dd * Math.PI * 2.0) / 360))), mat),
Vector3d.TransformCoordinate(Vector3d.Create((Math.Cos((dd * Math.PI * 2.0) / 360)),
-width,
(Math.Sin((dd * Math.PI * 2.0) / 360))), mat)
);
index++;
jYear += 1;
}
d += monthDays[m];
}
}
eclipticOverviewLineList.DrawLines(renderContext, opacity, drawColor);
return(true);
}
public static bool DrawEclipticGrid(RenderContext renderContext, float opacity, Color drawColor)
{
if (eclipticLineList == null)
{
eclipticLineList = new SimpleLineList();
eclipticLineList.DepthBuffered = false;
double obliquity = Coordinates.MeanObliquityOfEcliptic(2451545);
Matrix3d mat = Matrix3d.RotationX((-obliquity / 360.0 * (Math.PI * 2)));
for (double l = 0; l < 360; l += 10)
{
for (double b = -80; b < 80; b += 2)
{
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b + 2, 1), mat));
}
}
for (double b = -80; b <= 80; b += 10)
{
for (double l = 0; l < 360; l += 5)
{
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l + 5) / 15, b, 1), mat));
}
}
int counter = 0;
for (double l = 0; l < 360; l += 1)
{
double b = 0.25;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
b = .5;
break;
}
counter++;
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, -b, 1), mat));
}
counter = 0;
for (double l = 0; l < 360; l += 90)
{
counter = 0;
for (double b = -80; b <= 80; b += 1)
{
double width = 0.5 / 2;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5;
break;
}
counter++;
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l + width) / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l - width) / 15, b, 1), mat));
}
}
}
eclipticLineList.DrawLines(renderContext, opacity, drawColor);
return(true);
}
public static bool DrawGalacticGrid(RenderContext renderContext, float opacity, Color drawColor)
{
if (galLineList == null)
{
galLineList = new SimpleLineList();
galLineList.DepthBuffered = false;
for (double l = 0; l < 360; l += 10)
{
for (double b = -80; b < 80; b += 2)
{
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l, b), Coordinates.GalacticTo3dDouble(l, b + 2));
}
}
for (double b = -80; b <= 80; b += 10)
{
for (double l = 0; l < 360; l += 5)
{
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l, b), Coordinates.GalacticTo3dDouble(l + 5, b));
}
}
int counter = 0;
for (double l = 0; l < 360; l += 1)
{
double b = 0.25;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
b = .5;
break;
}
counter++;
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l, b), Coordinates.GalacticTo3dDouble(l, -b));
}
counter = 0;
for (double l = 0; l < 360; l += 90)
{
counter = 0;
for (double b = -80; b <= 80; b += 1)
{
double width = 0.5 / 2;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5;
break;
}
counter++;
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l + width, b), Coordinates.GalacticTo3dDouble(l - width, b));
}
}
}
galLineList.DrawLines(renderContext, opacity, drawColor);
return(true);
}
public static bool DrawGalacticGrid(RenderContext renderContext, float opacity, Color drawColor)
{
if (galLineList == null)
{
galLineList = new SimpleLineList();
galLineList.DepthBuffered = false;
for (double l = 0; l < 360; l += 10)
{
for (double b = -80; b < 80; b += 2)
{
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l, b), Coordinates.GalacticTo3dDouble(l, b + 2));
}
}
for (double b = -80; b <= 80; b += 10)
{
for (double l = 0; l < 360; l += 5)
{
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l, b), Coordinates.GalacticTo3dDouble(l + 5, b));
}
}
int counter = 0;
for (double l = 0; l < 360; l += 1)
{
double b = 0.25;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
b = .5;
break;
}
counter++;
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l, b), Coordinates.GalacticTo3dDouble(l, -b));
}
counter = 0;
for (double l = 0; l < 360; l += 90)
{
counter = 0;
for (double b = -80; b <= 80; b += 1)
{
double width = 0.5 / 2;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5;
break;
}
counter++;
galLineList.AddLine(Coordinates.GalacticTo3dDouble(l + width, b), Coordinates.GalacticTo3dDouble(l - width, b));
}
}
}
galLineList.DrawLines(renderContext, opacity, drawColor);
return true;
}
private static void MakePrecessionChart()
{
double obliquity = Coordinates.MeanObliquityOfEcliptic(SpaceTimeController.JNow);
Matrix3d mat = Matrix3d.RotationX((obliquity / 360.0 * (Math.PI * 2)));
Color col = Colors.White;
if (precLineList == null)
{
precLineList = new SimpleLineList();
precLineList.DepthBuffered = false;
for (double l = 0; l < 360; l++)
{
double b = 90 - obliquity;
precLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l + 1) / 15, b, 1), mat));
}
for (double l = -12000; l < 13000; l += 2000)
{
double b = 90 - obliquity;
double p = -((l - 2000) / 25772 * 24) - 6;
precLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p, b - .5, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p, b + .5, 1), mat));
}
}
if (PrecTextBatch == null)
{
PrecTextBatch = new Text3dBatch(50);
int index = 0;
for (double l = -12000; l < 13000; l += 2000)
{
double b = 90 - obliquity + 3;
double p = -((l - 2000) / 25772 * 24) - 6;
string text = l.ToString();
if (l == 0)
{
b = 90 - obliquity + 2;
text = "1 CE";
}
else if (l < 0)
{
text = " " + (Math.Abs(l).ToString()) + " BCE";
}
else
{
text = (Math.Abs(l).ToString()) + " CE";
}
if (text.Length == 9)
{
text = " " + text;
}
PrecTextBatch.Add(new Text3d(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(p + .01, b, 1), mat), text, 80, .00009));
}
}
return;
}
public static bool DrawAltAzGrid(RenderContext renderContext, float opacity, Color drawColor)
{
Coordinates zenithAltAz = new Coordinates(0, 0);
Coordinates zenith = Coordinates.HorizonToEquitorial(zenithAltAz, SpaceTimeController.Location, SpaceTimeController.Now);
double raPart = -((zenith.RA + 6) / 24.0 * (Math.PI * 2));
double decPart = -(((zenith.Dec)) / 360.0 * (Math.PI * 2));
string raText = Coordinates.FormatDMS(zenith.RA);
Matrix3d mat = Matrix3d.RotationY((float)-raPart);
mat.Multiply(Matrix3d.RotationX((float)decPart));
mat.Invert();
if (altAzLineList == null)
{
altAzLineList = new SimpleLineList();
altAzLineList.DepthBuffered = false;
for (double l = 0; l < 360; l += 10)
{
for (double b = -80; b < 80; b += 2)
{
altAzLineList.AddLine(Coordinates.RADecTo3dAu(l / 15 , b, 1), Coordinates.RADecTo3dAu(l / 15 , b + 2, 1));
}
}
for (double b = -80; b <= 80; b += 10)
{
for (double l = 0; l < 360; l += 5)
{
altAzLineList.AddLine(Coordinates.RADecTo3dAu(l / 15 , b, 1), Coordinates.RADecTo3dAu((l + 5) / 15 , b, 1));
}
}
int counter = 0;
for (double l = 0; l < 360; l += 1)
{
double b = 0.25;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
b = .5;
break;
}
counter++;
altAzLineList.AddLine(Coordinates.RADecTo3dAu(l / 15 , b, 1), Coordinates.RADecTo3dAu(l / 15, -b, 1));
}
counter = 0;
for (double l = 0; l < 360; l += 90)
{
counter = 0;
for (double b = -80; b <= 80; b += 1)
{
double width = 0.5 / 2;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5;
break;
}
counter++;
altAzLineList.AddLine(Coordinates.RADecTo3dAu((l + width) / 15 , b, 1), Coordinates.RADecTo3dAu((l - width) / 15 , b, 1));
}
}
}
Matrix3d matOldWorld = renderContext.World.Clone();
Matrix3d matOldWorldBase = renderContext.WorldBase.Clone();
renderContext.WorldBase = Matrix3d.MultiplyMatrix(mat, renderContext.World);
renderContext.World = renderContext.WorldBase.Clone();
renderContext.MakeFrustum();
altAzLineList.ViewTransform = Matrix3d.InvertMatrix(mat);
altAzLineList.DrawLines(renderContext, opacity, drawColor);
renderContext.WorldBase = matOldWorldBase;
renderContext.World = matOldWorld;
renderContext.MakeFrustum();
return true;
}
public static bool DrawEquitorialGrid(RenderContext renderContext, float opacity, Color drawColor)
{
if (equLineList == null)
{
equLineList = new SimpleLineList();
equLineList.DepthBuffered = false;
for (double hour = 0; hour < 24; hour++)
{
for (double dec = -80; dec < 80; dec += 2)
{
equLineList.AddLine(Coordinates.RADecTo3dAu(hour, dec, 1), Coordinates.RADecTo3dAu(hour, dec + 2, 1));
}
}
for (double dec = -80; dec <= 80; dec += 10)
{
for (double hour = 0; hour < 23.8; hour += .2)
{
equLineList.AddLine(Coordinates.RADecTo3dAu(hour, dec, 1), Coordinates.RADecTo3dAu(hour + .2, dec, 1));
//todo fix for color bright
}
}
int counter = 0;
for (double ra = 0; ra < 24; ra += .25)
{
double dec = 0.5;
switch (counter % 4)
{
case 0:
counter++;
continue;
case 3:
case 1:
dec = .25;
break;
}
counter++;
equLineList.AddLine(Coordinates.RADecTo3dAu(ra, dec, 1), Coordinates.RADecTo3dAu(ra, -dec, 1));
}
counter = 0;
for (double ra = 0; ra < 24; ra += 3)
{
counter = 0;
for (double dec = -80; dec <= 80; dec += 1)
{
double width = 0.5 / 30;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5 / 15;
break;
}
counter++;
equLineList.AddLine(Coordinates.RADecTo3dAu(ra + width, dec, 1), Coordinates.RADecTo3dAu(ra - width, dec, 1));
}
}
}
equLineList.DrawLines(renderContext, opacity, drawColor);
return true;
}
public static bool DrawEclipticGrid(RenderContext renderContext, float opacity, Color drawColor)
{
if (eclipticLineList == null)
{
eclipticLineList = new SimpleLineList();
eclipticLineList.DepthBuffered = false;
double obliquity = Coordinates.MeanObliquityOfEcliptic(2451545);
Matrix3d mat = Matrix3d.RotationX((-obliquity / 360.0 * (Math.PI * 2)));
for (double l = 0; l < 360; l += 10)
{
for (double b = -80; b < 80; b += 2)
{
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b + 2, 1), mat));
}
}
for (double b = -80; b <= 80; b += 10)
{
for (double l = 0; l < 360; l += 5)
{
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l + 5) / 15, b, 1), mat));
}
}
int counter = 0;
for (double l = 0; l < 360; l += 1)
{
double b = 0.25;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
b = .5;
break;
}
counter++;
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu(l / 15, -b, 1), mat));
}
counter = 0;
for (double l = 0; l < 360; l += 90)
{
counter = 0;
for (double b = -80; b <= 80; b += 1)
{
double width = 0.5 / 2;
switch (counter % 10)
{
case 0:
counter++;
continue;
case 5:
width = .5;
break;
}
counter++;
eclipticLineList.AddLine(Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l + width) / 15, b, 1), mat), Vector3d.TransformCoordinate(Coordinates.RADecTo3dAu((l - width) / 15, b, 1), mat));
}
}
}
eclipticLineList.DrawLines(renderContext, opacity, drawColor);
return true;
}
public static bool DrawEcliptic(RenderContext renderContext, float opacity, Color drawColor)
{
Color col = drawColor;
int year = SpaceTimeController.Now.GetUTCFullYear();
if (eclipticOverviewLineList == null || year != EclipticYear)
{
if (eclipticOverviewLineList != null)
{
eclipticOverviewLineList.Clear();
eclipticOverviewLineList = null;
}
EclipticYear = year;
double obliquity = Coordinates.MeanObliquityOfEcliptic(SpaceTimeController.JNow);
Matrix3d mat = Matrix3d.RotationX((-obliquity / 360.0 * (Math.PI * 2)));
double daysPerYear = 365.25;
if (DT.IsLeap(year, true))
{
monthDays[1] = 29;
daysPerYear = 366;
}
else
{
monthDays[1] = 28;
daysPerYear = 365;
}
int count = 2 * (int)daysPerYear;
EclipticCount = (int)daysPerYear;
double jYear = SpaceTimeController.UtcToJulian(new Date(year, 0, 1, 12, 0, 0));
int index = 0;
double d = 0;
eclipticOverviewLineList = new SimpleLineList();
eclipticOverviewLineList.DepthBuffered = false;
for (int m = 0; m < 12; m++)
{
int daysThisMonth = (int)monthDays[m];
for (int i = 0; i < daysThisMonth; i++)
{
AstroRaDec sunRaDec = Planets.GetPlanetLocationJD("Sun", jYear);
COR sunEcliptic = CT.Eq2Ec(sunRaDec.RA, sunRaDec.Dec, obliquity);
d = sunEcliptic.X;
double width = .005f;
if (i == 0)
{
width = .01f;
}
double dd = d;// +180;
eclipticOverviewLineList.AddLine(
Vector3d.TransformCoordinate( Vector3d.Create((Math.Cos((dd * Math.PI * 2.0) / 360)),
width,
(Math.Sin((dd * Math.PI * 2.0) / 360))), mat),
Vector3d.TransformCoordinate( Vector3d.Create((Math.Cos((dd * Math.PI * 2.0) / 360)),
-width,
(Math.Sin((dd * Math.PI * 2.0) / 360))), mat)
);
index++;
jYear += 1;
}
d += monthDays[m];
}
}
eclipticOverviewLineList.DrawLines(renderContext, opacity, drawColor);
return true;
}
private void DrawSingleConstellation(RenderContext renderContext, Lineset ls, float opacity)
{
bool reverse = false;
Place centroid = ConstellationCentroids[ls.Name];
if (centroid != null)
{
Vector3d pos = Coordinates.RADecTo3d(reverse ? -centroid.RA - 6 : centroid.RA, reverse ? centroid.Dec : centroid.Dec);
if (Vector3d.Dot(renderContext.ViewPoint, pos) < maxSeperation)
{
return;
}
}
if (!constellationVertexBuffers.ContainsKey(ls.Name))
{
int count = ls.Points.Count;
SimpleLineList linelist = new SimpleLineList();
linelist.DepthBuffered = false;
constellationVertexBuffers[ls.Name] = linelist;
Vector3d currentPoint = new Vector3d();
Vector3d temp;
for (int i = 0; i < count; i++)
{
if (ls.Points[i].PointType == PointType.Move || i == 0)
{
currentPoint = Coordinates.RADecTo3d(ls.Points[i].RA, ls.Points[i].Dec);
}
else
{
temp = Coordinates.RADecTo3d(ls.Points[i].RA, ls.Points[i].Dec);
linelist.AddLine(currentPoint, temp);
currentPoint = temp;
}
}
if (boundry)
{
temp = Coordinates.RADecTo3d(ls.Points[0].RA, ls.Points[0].Dec);
linelist.AddLine(currentPoint, temp);
}
}
string col = "red";
if (boundry)
{
if (constToDraw != ls.Name)
{
col = Settings.GlobalSettings.ConstellationBoundryColor;
}
else
{
col = Settings.GlobalSettings.ConstellationSelectionColor;
}
}
else
{
col = Settings.GlobalSettings.ConstellationFigureColor;
}
constellationVertexBuffers[ls.Name].DrawLines(renderContext, opacity, Color.Load(col));
}