Orbits.kc

module KOS::Orbits;

import KOS::Builtin unqualified;
import KOS::Collections unqualified;
import KOS::Math unqualified;
import KOS::Geography unqualified;

builtin structure Orbit : Structure {
  String Name get;
  Scalar Apoapsis get;
  Scalar Periapsis get;
  Body Body get;
  Scalar Period get;
  Scalar Inclination get;
  Scalar Eccentricity get;
  Scalar SemiMajorAxis get;
  Scalar SemiMinorAxis get;
  Scalar LAN get;
  Scalar LongitudeOfAscendingNode get;
  Scalar ArgumentOfPeriapsis get;
  Scalar TrueAnomaly get;
  Scalar MeanAnomalyAtEpoch get;
  String Transition get; // TODO: enum
  Vector Position get;
  Vector Velocity get;
  Orbit NextPatch get;
  Scalar NextPatchETA get;
  Boolean HasNextPatch get;
}

builtin structure Orbitable : Structure {
  String Name get;
  Body Body get;
  Boolean HasBody get;
  Boolean HasOrbit get;
  Orbit Orbit get;
  Direction Up get;
  Direction North get;
  Direction Prograde get;
  Direction SrfPrograde get;
  Direction Retrograde get;
  Direction SrfRetrograde get;
  Vector Position get;
  OrbitableVelocity Velocity get;
  Scalar Distance get;
  Direction Direction get;
  Scalar Latitude get;
  Scalar Longitude get;
  Scalar Altitude get;
  GeoCoordinates GeoPosition get;
  List<Orbit> Patches get;
}

builtin structure OrbitableVelocity : Structure {
  Vector Orbit get;
  Vector Surface get;
}

builtin structure ETA : Structure {
  Scalar Apoapsis;
  Scalar Periapsis;
  Scalar Transition;
}

builtin ETA ETA get;

builtin structure ALT : Structure {
  Scalar Apoapsis;
  Scalar Periapsis;
  Scalar Radar;
}

builtin ALT ALT get;

builtin Vector PositionAt(Orbitable sat, Scalar time);
builtin OrbitableVelocity VelocityAt(Orbitable sat, Scalar time);
builtin Orbit OrbitAt(Orbitable sat, Scalar time);