public void MarkEdge(DelaunayTriangle triangle)
{
for (int i = 0; i < 3; i++)
if (EdgeIsConstrained[i])
{
triangle.MarkConstrainedEdge(Points[(i + 1)%3], Points[(i + 2)%3]);
}
}
public void AddTriangle(DelaunayTriangle t)
{
_triangles.Add(t);
}
/// <param name="t">Opposite triangle</param>
/// <param name="p">The point in t that isn't shared between the triangles</param>
public TriangulationPoint OppositePoint(DelaunayTriangle t, TriangulationPoint p)
{
Debug.Assert(t != this, "self-pointer error");
return PointCW(t.PointCW(p));
}
public void ClearNeighbor(DelaunayTriangle triangle)
{
if (Neighbors[0] == triangle)
{
Neighbors[0] = null;
}
else if (Neighbors[1] == triangle)
{
Neighbors[1] = null;
}
else
{
Neighbors[2] = null;
}
}
/// <summary>
/// Exhaustive search to update neighbor pointers
/// </summary>
public void MarkNeighbor(DelaunayTriangle t)
{
if (t.Contains(Points[1], Points[2]))
{
Neighbors[0] = t;
t.MarkNeighbor(Points[1], Points[2], this);
}
else if (t.Contains(Points[0], Points[2]))
{
Neighbors[1] = t;
t.MarkNeighbor(Points[0], Points[2], this);
}
else if (t.Contains(Points[0], Points[1]))
{
Neighbors[2] = t;
t.MarkNeighbor(Points[0], Points[1], this);
}
else
{
Debug.WriteLine("markNeighbor failed");
}
}
/// <summary>
/// Update neighbor pointers
/// </summary>
/// <param name="p1">Point 1 of the shared edge</param>
/// <param name="p2">Point 2 of the shared edge</param>
/// <param name="t">This triangle's new neighbor</param>
private void MarkNeighbor(TriangulationPoint p1, TriangulationPoint p2, DelaunayTriangle t)
{
if ((p1 == Points[2] && p2 == Points[1]) || (p1 == Points[1] && p2 == Points[2]))
{
Neighbors[0] = t;
}
else if ((p1 == Points[0] && p2 == Points[2]) || (p1 == Points[2] && p2 == Points[0]))
{
Neighbors[1] = t;
}
else if ((p1 == Points[0] && p2 == Points[1]) || (p1 == Points[1] && p2 == Points[0]))
{
Neighbors[2] = t;
}
else
{
Debug.WriteLine("Neighbor error, please report!");
// throw new Exception("Neighbor error, please report!");
}
}
/// <param name="t">Opposite triangle</param>
/// <param name="p">The point in t that isn't shared between the triangles</param>
public TriangulationPoint OppositePoint(DelaunayTriangle t, TriangulationPoint p)
{
Debug.Assert(t != this, "self-pointer error");
return(PointCW(t.PointCW(p)));
}