public void CalcHemisphere_SouthWest()
{
var res = CoordinateHelper.CalcHemisphere(swCoord);
Assert.AreEqual(CoordinateHelper.Hemisphere.SouthWest, res);
}
/// <summary>
/// Finds the available neighbours, depending on the logical location of this satellite, in the provided direction.
/// </summary>
/// <param name="direction">The direction for which the neighbour is searched for. Can be Up, Down, Left and Right.</param>
/// <returns>The Satellite neighbour in the specified direction.</returns>
private Satellite FindNeighbour(NeighbourDirection direction)
{
Satellite neighbour = null;
if (direction == NeighbourDirection.Up)
{
neighbour = _constellation[_thisSatellite.SatPosition.OrbitNumber][(_thisSatellite.SatPosition.SatNumber + 1) % _conf.NumberOfSatellitesPerOrbit];
}
if (direction == NeighbourDirection.Down)
{
neighbour = _constellation[_thisSatellite.SatPosition.OrbitNumber][(_thisSatellite.SatPosition.SatNumber + _conf.NumberOfSatellitesPerOrbit - 1) % _conf.NumberOfSatellitesPerOrbit];
}
var hemisphere = CoordinateHelper.CalcHemisphere(_thisSatellite.Location);
if (direction == NeighbourDirection.Right && _conf.NumberOfOrbits > 1)
{
var neighbourOrbitRight = 0;
var rightCrossSeamOrbit = 0;
if (hemisphere == CoordinateHelper.Hemisphere.NorthEast || hemisphere == CoordinateHelper.Hemisphere.SouthEast) //If this satellite is in the eastern hemisphere
{
neighbourOrbitRight = (_thisSatellite.SatPosition.OrbitNumber + 1) % _conf.NumberOfOrbits; //Calculate number of next orbit
rightCrossSeamOrbit = _conf.MinimumOrbitNumber;
if (neighbourOrbitRight > 0) //If orbit to my right is NOT across the seam
{
neighbour = _constellation[neighbourOrbitRight][_thisSatellite.SatPosition.SatNumber]; //My right neighbour is my initial neighbour
}
}
else if (hemisphere == CoordinateHelper.Hemisphere.NorthWest || hemisphere == CoordinateHelper.Hemisphere.SouthWest) //If this satellite is in the western hemisphere (mirrored constellation)
{
neighbourOrbitRight = (_thisSatellite.SatPosition.OrbitNumber + (_conf.NumberOfOrbits - 1)) % _conf.NumberOfOrbits; //Calculate number of next orbit
rightCrossSeamOrbit = _conf.MaximumOrbitNumber;
if (neighbourOrbitRight < _conf.MaximumOrbitNumber) //If orbit to my right is NOT across the seam
{
neighbour = _constellation[neighbourOrbitRight][_thisSatellite.SatPosition.SatNumber];
}
}
//If my orbit is the last one, i.e. right neighbour is crossing the seam AND cross-seam communication is enabled (otherwise this satellite has no right neighbour right now)
if (neighbourOrbitRight == rightCrossSeamOrbit && _conf.CrossSeamCommunicationEnabled)
{
var ticks = _thisSatellite.LogicalPosition.SatNumber - _thisSatellite.SatPosition.SatNumber;
if (ticks < 0) //How many ticks since original position
{
ticks = _conf.NumberOfSatellitesPerOrbit - Math.Abs(_thisSatellite.LogicalPosition.SatNumber - _thisSatellite.SatPosition.SatNumber); //10
}
//Original neighbour position
var initNb = (_conf.NumberOfSatellitesPerOrbit - _thisSatellite.SatPosition.SatNumber - (_conf.NumberOfSatellitesPerOrbit / 2)) % _conf.NumberOfSatellitesPerOrbit;
if (initNb < 0)
{
initNb = _conf.NumberOfSatellitesPerOrbit - Math.Abs(initNb);
}
//Current neighbour
var newNb = initNb - (ticks * 2) % _conf.NumberOfSatellitesPerOrbit; //Each "tick" shifts cross-seam neighbours by 2
if (newNb < 0)
{
newNb = _conf.NumberOfSatellitesPerOrbit - Math.Abs(newNb);
}
neighbour = _constellation[neighbourOrbitRight][newNb];
}
}
if (direction == NeighbourDirection.Left && _conf.NumberOfOrbits > 1)
{
var neighbourOrbitLeft = 0;
var leftCrossSeamOrbit = 0;
if (hemisphere == CoordinateHelper.Hemisphere.NorthEast || hemisphere == CoordinateHelper.Hemisphere.SouthEast) //If this satellite is in the eastern hemisphere
{
neighbourOrbitLeft = (_thisSatellite.SatPosition.OrbitNumber + _conf.NumberOfOrbits - 1) % _conf.NumberOfOrbits; //Calculate number of next orbit
leftCrossSeamOrbit = _conf.MaximumOrbitNumber;
if (neighbourOrbitLeft != leftCrossSeamOrbit) //If orbit to my right is NOT across the seam
{
neighbour = _constellation[neighbourOrbitLeft][_thisSatellite.SatPosition.SatNumber]; //My right neighbour is my initial neighbour
}
}
else if (hemisphere == CoordinateHelper.Hemisphere.NorthWest || hemisphere == CoordinateHelper.Hemisphere.SouthWest) //If this satellite is in the western hemisphere (mirrored constellation)
{
neighbourOrbitLeft = (_thisSatellite.SatPosition.OrbitNumber + 1) % _conf.NumberOfOrbits; //Calculate number of next orbit
leftCrossSeamOrbit = _conf.MinimumOrbitNumber;
if (neighbourOrbitLeft != leftCrossSeamOrbit) //If orbit to my right is NOT across the seam
{
neighbour = _constellation[neighbourOrbitLeft][_thisSatellite.SatPosition.SatNumber];
}
}
//If my orbit is the last one, i.e. right neighbour is crossing the seam AND cross-seam communication is enabled (otherwise this satellite has no right neighbour right now)
if (neighbourOrbitLeft == leftCrossSeamOrbit && _conf.CrossSeamCommunicationEnabled)
{
var ticks = _thisSatellite.LogicalPosition.SatNumber - _thisSatellite.SatPosition.SatNumber;
if (ticks < 0) //How many ticks since original position
{
ticks = _conf.NumberOfSatellitesPerOrbit - Math.Abs(_thisSatellite.LogicalPosition.SatNumber - _thisSatellite.SatPosition.SatNumber);
}
//Original neighbour position
var initNb = (_conf.NumberOfSatellitesPerOrbit - _thisSatellite.SatPosition.SatNumber - (_conf.NumberOfSatellitesPerOrbit / 2)) % _conf.NumberOfSatellitesPerOrbit;
if (initNb < 0)
{
initNb = _conf.NumberOfSatellitesPerOrbit - Math.Abs(initNb);
}
//Current neighbour
var newNb = initNb - (ticks * 2) % _conf.NumberOfSatellitesPerOrbit;
if (newNb < 0)
{
newNb = _conf.NumberOfSatellitesPerOrbit - Math.Abs(newNb);
}
neighbour = _constellation[neighbourOrbitLeft][newNb];
}
}
return(neighbour);
}
public void CalcHemisphere_NorthEast()
{
var res = CoordinateHelper.CalcHemisphere(neCoord);
Assert.AreEqual(CoordinateHelper.Hemisphere.NorthEast, res);
}
