public static CameraParameters InterpolateGreatCircle(CameraParameters from, CameraParameters to, double alphaIn, InterpolationType type)
{
CameraParameters result = new CameraParameters();
double alpha = EaseCurve(alphaIn, type);
double alphaBIn = Math.Min(1.0, alphaIn * 2);
double alphaB = EaseCurve(alphaBIn, type);
result.Angle = to.Angle * alpha + from.Angle * (1.0 - alpha);
result.Rotation = to.Rotation * alpha + from.Rotation * (1.0 - alpha);
Vector3d left = Coordinates.GeoTo3dDouble(from.Lat, from.Lng);
Vector3d right = Coordinates.GeoTo3dDouble(to.Lat, to.Lng);
Vector3d mid = Vector3d.Slerp(left, right, alpha);
Vector2d midV2 = Coordinates.CartesianToLatLng(mid);
result.Lat = midV2.Y;
result.Lng = midV2.X;
result.Zoom = Math.Pow(2, Math.Log(to.Zoom, 2) * alpha + Math.Log(from.Zoom, 2) * (1.0 - alpha));
result.Opacity = (float)(to.Opacity * alpha + from.Opacity * (1.0 - alpha));
result.ViewTarget = Vector3d.Lerp(from.ViewTarget, to.ViewTarget, alpha);
result.DomeAlt = to.DomeAlt * alpha + from.DomeAlt * (1.0 - alpha);
result.DomeAz = to.DomeAz * alpha + from.DomeAz * (1.0 - alpha);
result.TargetReferenceFrame = to.TargetReferenceFrame;
if (to.Target == from.Target)
{
result.Target = to.Target;
}
else
{
result.Target = SolarSystemObjects.Custom;
}
return(result);
}
private void GoToRADec_Click(object sender, EventArgs e)
{
int index = coordinateType.SelectedIndex;
double ra = 0;
double dec = 0;
bool raValid = false;
bool decValid = false;
switch (index)
{
case 0: // Equitorial
{
ra = Coordinates.ParseRA(raText.Text, false);
dec = Coordinates.ParseDec(decText.Text);
raValid = Coordinates.ValidateRA(raText.Text);
decValid = Coordinates.ValidateDec(decText.Text);
}
break;
case 2: // Galactic
{
double l = Coordinates.Parse(raText.Text);
double b = Coordinates.ParseDec(decText.Text);
raValid = Coordinates.Validate(raText.Text);
decValid = Coordinates.ValidateDec(decText.Text);
if (raValid && decValid)
{
double[] result = Earth3d.GalactictoJ2000(l, b);
ra = result[0] / 15;
dec = result[1];
}
}
break;
case 3: // Ecliptic
{
double l = Coordinates.Parse(raText.Text);
double b = Coordinates.ParseDec(decText.Text);
raValid = Coordinates.Validate(raText.Text);
decValid = Coordinates.ValidateDec(decText.Text);
if (raValid && decValid)
{
AstroCalc.AstroRaDec radec = AstroCalc.AstroCalc.EclipticToJ2000(l, b, SpaceTimeController.JNow);
ra = radec.RA;
dec = radec.Dec;
}
}
break;
case 4: // Geo
{
ra = -Coordinates.Parse(raText.Text) / 15;
dec = Coordinates.ParseDec(decText.Text);
raValid = Coordinates.Validate(raText.Text);
decValid = Coordinates.ValidateDec(decText.Text);
}
break;
case 1: // alt/az
{
double az = Coordinates.Parse(raText.Text);
double alt = Coordinates.ParseDec(decText.Text);
raValid = Coordinates.Validate(raText.Text);
decValid = Coordinates.ValidateDec(decText.Text);
Coordinates radec = Coordinates.HorizonToEquitorial(Coordinates.FromLatLng(alt, az), SpaceTimeController.Location, SpaceTimeController.Now);
ra = radec.RA;
dec = radec.Dec;
}
break;
}
if (raValid && decValid)
{
if (Earth3d.MainWindow.SolarSystemMode)
{
Vector3d pnt = Coordinates.GeoTo3dDouble(dec, Coordinates.Parse(raText.Text));
pnt = Vector3d.TransformCoordinate(pnt, Planets.EarthMatrix);
pnt.Normalize();
Vector2d radec = Coordinates.CartesianToLatLng(pnt);
Earth3d.MainWindow.TargetLat = radec.Y;
Earth3d.MainWindow.TargetLong = radec.X - 90;
}
else
{
Earth3d.MainWindow.GotoTargetRADec(ra, dec, true, false);
}
}
}
