{/// <summary>
/// returns the contur of a list of triangles
/// </summary>
/// <param name="L">List of triangles</param>
/// <returns></returns>
public static Loxyz GetContour(List <Triangle> L)
{
Dictionary <xyz, xyz> D = new Dictionary <xyz, xyz>();
for (int i = 0; i < L.Count; i++)
{
INeighbors N = L[i] as INeighbors;
ITriangle T = L[i];
if ((T.GetB() - T.GetA() & T.GetC() - T.GetA()).length() < 0.0000001)
{
continue;
}
if (N.GetNeighbor(0) == -1)
{
D.Add(T.GetA().Toxyz(), T.GetB().Toxyz());
}
if (N.GetNeighbor(1) == -1)
{
D.Add(T.GetB().Toxyz(), T.GetC().Toxyz());
}
if (N.GetNeighbor(2) == -1)
{
D.Add(T.GetC().Toxyz(), T.GetA().Toxyz());
}
}
Loxyz Result = new Loxyz();
while (true)
{
if (D.Count == 0)
{
break;
}
xyz First = new xyz(0, 0, 0);
foreach (KeyValuePair <xyz, xyz> Pt in D)
{
First = Pt.Key;
break;
}
xyz Current = First;
xyzArray A = new xyzArray();
Result.Add(A);
while (true)
{
if (D.ContainsKey(Current))
{
xyz C = D[Current];
A.Add(C);
D.Remove(Current);
Current = C;
}
else
{
break;
}
}
}
return(Result);
}