private KeplerOrbitMover SpawnBody(JPLElementsData data, string attractorName)
{
KeplerOrbitMover attractor = FindBodyInstance(attractorName);
KeplerOrbitMover body = Instantiate(BodyTemplate, parent: attractor == null ? null : attractor.transform);
if (!string.IsNullOrEmpty(data.BodyName))
{
body.name = data.BodyName.Trim();
}
Transform bodyTransform = body.transform;
if (attractor != null)
{
body.AttractorSettings.AttractorMass = data.AttractorMass;
}
double unitsPerAU = UnitsPerAU;
if (IsAllowedRangeScaleMltPerBody)
{
// By default MLT value is 1,
// but for moons it may be larger than 1 for better visualization.
unitsPerAU *= data.RangeMlt;
}
// G constant is used as free parameter to fixate orbits periods values while SemiMajor axis parameter is adjusted for the scene.
double compensatedGConst = GConstant / Math.Pow(AU / unitsPerAU, 3d);
body.AttractorSettings.GravityConstant = (float)compensatedGConst;
body.AttractorSettings.AttractorObject = attractor == null ? null : attractor.transform;
body.OrbitData = new KeplerOrbitData(
eccentricity: data.EC,
semiMajorAxis: data.A * unitsPerAU,
meanAnomalyDeg: data.MA,
inclinationDeg: data.IN,
argOfPerifocusDeg: data.W,
ascendingNodeDeg: data.OM,
attractorMass: body.AttractorSettings.AttractorMass,
gConst: compensatedGConst);
if (attractor != null && data.A > 0)
{
body.ForceUpdateViewFromInternalState();
}
else
{
body.enabled = false;
}
var mat = data.Type == 1 ? MainAttractorMaterial : null;
SetBodyColorAndDiameter(bodyTransform, data.Color, mat, (float)data.Diameter, ScalePerDiameter);
body.gameObject.SetActive(true);
return(body);
}
private void SpawnAll(JPLElementsData[] inputData)
{
// Spawn all bodies in multiple passes to resolve parent-child connections.
// All spawned bodies are instantiated from signle template, which has no visual components attached,
// because this example is designed only for simplest orbits loading process demonstration.
if (inputData == null || inputData.Length == 0)
{
return;
}
List <JPLElementsData> spawnOrder = new List <JPLElementsData>(inputData);
List <KeplerOrbitMover> spawnedInstances = new List <KeplerOrbitMover>();
if (GameObject.FindObjectsOfType <Transform>().Length > 5)
{
Debug.Log("Warning! too many object on scene. Don't forget to remove old spawned object before spawning new pass");
}
bool isAnySpawned = true;
while (spawnOrder.Count > 0 && isAnySpawned)
{
isAnySpawned = false;
for (int i = 0; i < spawnOrder.Count; i++)
{
var attractorName = spawnOrder[0].AttractorName != null ? spawnOrder[0].AttractorName.Trim() : "";
bool isAttractorSpawned =
string.IsNullOrEmpty(attractorName)
?true
:spawnedInstances.Any(s => s.name == attractorName);
if (isAttractorSpawned)
{
KeplerOrbitMover attractor = string.IsNullOrEmpty(attractorName)
? null
: spawnedInstances.First(s => s.name == attractorName);
KeplerOrbitMover body = Instantiate(BodyTemplate, parent: attractor == null ? null : attractor.transform);
if (!string.IsNullOrEmpty(spawnOrder[0].BodyName))
{
body.name = spawnOrder[0].BodyName.Trim();
}
if (attractor != null)
{
body.AttractorSettings.AttractorMass = spawnOrder[0].AttractorMass;
}
body.AttractorSettings.GravityConstant = (float)GConstant;
body.AttractorSettings.AttractorObject = attractor == null ? null : attractor.transform;
body.OrbitData = new KeplerOrbitData(
eccentricity: spawnOrder[i].EC,
semiMajorAxis: spawnOrder[i].A * UnitsPerAU,
meanAnomalyDeg: spawnOrder[i].MA,
inclinationDeg: spawnOrder[i].IN,
argOfPerifocusDeg: spawnOrder[i].W,
ascendingNodeDeg: spawnOrder[i].OM,
attractorMass: body.AttractorSettings.AttractorMass,
gConst: GConstant);
if (attractor != null)
{
body.ForceUpdateViewFromInternalState();
}
else
{
body.enabled = false;
}
body.gameObject.SetActive(true);
spawnOrder.RemoveAt(0);
i--;
spawnedInstances.Add(body);
isAnySpawned = true;
}
else
{
// If attractor not spawned yet, then wait for next spawn cycle pass.
}
}
}
if (!isAnySpawned && spawnOrder.Count > 0)
{
Debug.LogError("Couldn't spawn " + spawnOrder.Count + " because assigned attractor was not found");
}
}
