/// <summary>
/// Merges this halfedge with the Next
/// </summary>
public void Merge()
{
if (Next == null)
{
throw new InvalidOperationException("Next must not be null");
}
if (Face == null)
{
throw new InvalidOperationException("Face must not be null");
}
if (Face != Next.Face)
{
throw new InvalidOperationException("Cannot merge two edges bordering different faces");
}
if (Twin.Face != null && Twin.Face != Next.Twin.Face)
{
throw new InvalidOperationException("Cannot merge two edges with twins bordering different faces");
}
HalfEdge oldNext = Next;
Next = oldNext.Next;
End = oldNext.End;
if (Next.Twin.Next == oldNext.Twin)
{
Next.Twin.Next = Twin;
Next.Twin.End = End;
}
if (Twin.Face != null)
{
Twin.Face.Edges.Where(a => a.Next == oldNext.Twin).First().Next = Twin;
}
oldNext.Face = null;
oldNext.Twin.Face = null;
oldNext.Next = null;
oldNext.Twin.Next = null;
if (Face.Edge == oldNext)
{
Face.Edge = this;
}
if (Twin.Face != null && Twin.Face.Edge == oldNext.Twin)
{
Twin.Face.Edge = Twin;
}
Mesh.Delete(oldNext);
}
public void Delete()
{
Mesh.Delete(this);
}