private void ProcessEdge(GroundEdge edge)
{
IEnumerable <PotentialDiagonal> potentialDiagonals = grid.GetPotentialDiagonals(edge);
foreach (PotentialDiagonal potentialDiagonal in potentialDiagonals)
{
if (!unavailableDiagonals.Contains(potentialDiagonal.Key))
{
if (availableDiagonals.ContainsKey(potentialDiagonal.Key))
{
PotentialDiagonal otherHalf = availableDiagonals[potentialDiagonal.Key];
if (potentialDiagonal.SharedPoint != otherHalf.SharedPoint)
{
GroundQuad newQuad = new GroundQuad(potentialDiagonal.EdgeA, potentialDiagonal.EdgeB, otherHalf.EdgeA, otherHalf.EdgeB);
RegisterNewQuad(newQuad);
quads.Add(newQuad);
}
}
else
{
availableDiagonals.Add(potentialDiagonal.Key, potentialDiagonal);
}
}
}
}
private void RegisterNewQuad(GroundQuad newQuad)
{
foreach (string key in GetKeysFor(newQuad))
{
if (availableDiagonals.ContainsKey(key))
{
availableDiagonals.Remove(key);
}
unavailableDiagonals.Add(key);
}
}
private IEnumerable <string> GetKeysFor(GroundQuad quad)
{
yield return(PotentialDiagonal.GetKey(quad.Points[0].Index, quad.Points[2].Index));
yield return(PotentialDiagonal.GetKey(quad.Points[1].Index, quad.Points[3].Index));
}