/// <summary>
/// Retourne des informations concernant la géographie de la cellule.
/// </summary>
/// <returns></returns>
public Generation.ChunkGeography GetGeography()
{
Generation.ChunkGeography chunk = new Generation.ChunkGeography();
float xMin = GridPosition.X;
float yMin = GridPosition.Y;
float xMax = xMin + Scale;
float yMax = yMin + Scale;
// Phi selon X
chunk.PhiMin = xMin * (float)Math.PI * 2;
chunk.PhiMax = xMax * (float)Math.PI * 2;
// Theta selon Y
chunk.ThetaMin = yMin * (float)Math.PI;
chunk.ThetaMax = yMax * (float)Math.PI;
return(chunk);
}
/// <summary>
/// Indique si cette cellule doit se diviser.
/// </summary>
/// <returns></returns>
bool ShouldDivide()
{
if (EXPAND_ALL || m_depth < 3)
{
return(m_depth < MaxDepth);
}
// Condition nécessaire.
bool depthOK = m_depth < MaxDepth;
Generation.ChunkGeography chunk = GetGeography();
Util.SphericalCoords playerPlanetCoords = Util.SphericalCoords.FromCartesian(Scene.Instance.Camera.Position - PlanetPosition);
Vector2 player = new Vector2(playerPlanetCoords.Theta, playerPlanetCoords.Phi);
float factor = 1.005f + Math.Max(0, 8 - m_depth) * 0.007f;
bool thetaOK = player.X <chunk.ThetaMax *factor && player.X> chunk.ThetaMin / factor;
bool phiOK = player.Y <chunk.PhiMax *factor && player.Y> chunk.PhiMin / factor;
bool radiusOK = Math.Abs(playerPlanetCoords.Radius - PlanetRadius) < 1 + (MaxDepth - m_depth) * 1.5f; //playerPlanetCoords.Radius > PlanetRadius * 0.9f && playerPlanetCoords.Radius < PlanetRadius * 5;
return(depthOK && (thetaOK && phiOK) && radiusOK);
}
/// <summary>
/// Indique si cette cellule doit se rétracter.
/// </summary>
/// <returns></returns>
bool ShouldRetract()
{
if (EXPAND_ALL || Depth < 3)
{
return(false);
}
Generation.ChunkGeography chunk = GetGeography();
Util.SphericalCoords playerPlanetCoords = Util.SphericalCoords.FromCartesian(Scene.Instance.Camera.Position - PlanetPosition);
Vector2 player = new Vector2(playerPlanetCoords.Theta, playerPlanetCoords.Phi);
float factor = 1.3f + Math.Max(0, 5 - m_depth) * 0.100f;;
bool thetaOK = player.X <chunk.ThetaMax *factor && player.X> chunk.ThetaMin / factor;
bool phiOK = player.Y <chunk.PhiMax *factor && player.Y> chunk.PhiMin / factor;
bool radiusOK = Math.Abs(playerPlanetCoords.Radius - PlanetRadius) < 1 + (MaxDepth - m_depth) * 2.0f;
return(!thetaOK || !phiOK || !radiusOK);
/*float distance = ComputePlayerDistance();
* float diagLength = Vector2.Distance(Util.MathHelper.ReduceXY(Bounds.Minimum), Util.MathHelper.ReduceXY(Bounds.Maximum));*/
// return distance > diagLength * RETRACT_FACTOR && !m_isRetracting && !m_isExpanding;
}
/// <summary>
/// Retourne des informations concernant la géographie de la cellule.
/// </summary>
/// <returns></returns>
public Generation.ChunkGeography GetGeography()
{
Generation.ChunkGeography chunk = new Generation.ChunkGeography();
float xMin = GridPosition.X;
float yMin = GridPosition.Y;
float xMax = xMin + Scale;
float yMax = yMin + Scale;
// Phi selon X
chunk.PhiMin = xMin * (float)Math.PI * 2;
chunk.PhiMax = xMax * (float)Math.PI * 2;
// Theta selon Y
chunk.ThetaMin = yMin * (float)Math.PI;
chunk.ThetaMax = yMax * (float)Math.PI;
return chunk;
}