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Fixed true anomaly

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This commit is contained in:
Nick 2022-05-06 16:51:33 -04:00
parent 6cb125f84c
commit d4d0ea32a9
2 changed files with 24 additions and 14 deletions
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19
NewHorizons/Components/Orbital/OrbitalParameters.cs
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@ -16,8 +16,6 @@ namespace NewHorizons.Components.Orbital
public float Eccentricity { get; private set; }
public float ArgumentOfPeriapsis { get; private set; }
public float TrueAnomaly { get; private set; }
public float MeanAnomaly { get; private set; }
public float EccentricAnomaly { get; private set; }
public float Period { get; private set; }
public Vector3 InitialPosition { get; private set; }
@ -42,15 +40,10 @@ namespace NewHorizons.Components.Orbital
var power = primaryGravity.Power;
var period = (float) (GravityVolume.GRAVITATIONAL_CONSTANT * (primaryMass + secondaryMass) / (4 * Math.PI * Math.PI * Math.Pow(semiMajorAxis, power)));
orbitalParameters.Period = period;
// All in radians
var f = Mathf.Deg2Rad * trueAnomaly;
var eccentricAnomaly = Mathf.Atan2(Mathf.Sqrt(1 - (eccentricity * eccentricity)) * Mathf.Sin(f), eccentricity + Mathf.Cos(f));
var meanAnomaly = eccentricAnomaly - eccentricity * Mathf.Sin(eccentricAnomaly);
orbitalParameters.Period = period;
orbitalParameters.MeanAnomaly = meanAnomaly * Mathf.Rad2Deg;
orbitalParameters.EccentricAnomaly = eccentricAnomaly * Mathf.Rad2Deg;
var p = semiMajorAxis * (1 - (eccentricity * eccentricity)); // Semi-latus rectum
var r = p / (1 + eccentricity * Mathf.Cos(f));
@ -84,11 +77,9 @@ namespace NewHorizons.Components.Orbital
v = Mathf.Sqrt(G * primaryMass * ((2f / r) - (1f / semiMajorAxis)));
}
var semiMinorAxis = semiMajorAxis * Mathf.Sqrt(1 - (eccentricity * eccentricity));
var focusDistance = Mathf.Sqrt((semiMajorAxis * semiMajorAxis) - (semiMinorAxis * semiMinorAxis));
var x = semiMajorAxis * Mathf.Cos(eccentricAnomaly) - focusDistance;
var y = semiMinorAxis * Mathf.Sin(eccentricAnomaly);
// Origin is the focus
var x = r * Mathf.Cos(f);
var y = r * Mathf.Sin(f);
var n_p = new Vector2(x, y).normalized;

19
NewHorizons/Handlers/PlanetCreationHandler.cs
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@ -386,6 +386,7 @@ namespace NewHorizons.Handlers
return go;
}
//private static int j = 0;
private static void UpdatePosition(GameObject go, NewHorizonsBody body, AstroObject primaryBody, AstroObject secondaryBody)
{
go.transform.parent = Locator.GetRootTransform();
@ -396,6 +397,24 @@ namespace NewHorizons.Handlers
var secondaryGravity = new Gravity(secondaryBody.GetGravityVolume());
var relativePosition = body.Config.Orbit.GetOrbitalParameters(primaryGravity, secondaryGravity).InitialPosition;
/* Debugging true anomaly
if(Main.Instance.CurrentStarSystem != "SolarSystem")
{
var colors = new Color[] { Color.red, Color.blue, Color.yellow, Color.green, Color.grey, Color.white };
var orbit = body.Config.Orbit;
// This is gonna be wacky
for (int i = 0; i < 360; i += 20)
{
var color = colors[j % (colors.Count() - 1)];
orbit.TrueAnomaly = i;
var shape = AddDebugShape.AddSphere(primaryBody.gameObject, 100, color);
shape.transform.position = orbit.GetOrbitalParameters(primaryGravity, secondaryGravity).InitialPosition + primaryBody.transform.position;
}
j++;
}
*/
go.transform.position = relativePosition + primaryBody.transform.position;
}
else