public void DeleteHalfEdge(HalfEdge edge)
{
if (edge.Origin.Edge == edge)
{
foreach (var temp in edge.Origin.Walk())
{
if (temp == edge)
{
continue;
}
edge.Origin.SetEdge(temp);
break;
}
if (edge.Origin.Edge == edge)
{
edge.Origin.SetEdge(null);
}
}
if (edge.Twin.Origin.Edge == edge.Twin)
{
foreach (var temp in edge.Twin.Origin.Walk())
{
if (temp == edge.Twin)
{
continue;
}
edge.Twin.Origin.SetEdge(temp);
break;
}
if (edge.Twin.Origin.Edge == edge)
{
edge.Twin.Origin.SetEdge(null);
}
}
// edge.Next.SetPrevious(edge.Previous);
// edge.Twin.Next.SetPrevious(edge.Twin.Previous);
HalfEdges.Remove(edge.Twin);
HalfEdges.Remove(edge);
edge.Twin.SetOrigin(null);
edge.Twin.SetPolygon(null);
edge.Twin.SetNext(null);
edge.Twin.SetPrevious(null);
edge.Twin.SetTwin(null);
edge.SetPair(null);
edge.Twin.SetPair(null);
edge.SetOrigin(null);
edge.SetPolygon(null);
edge.SetNext(null);
edge.SetPrevious(null);
edge.SetTwin(null);
}
public void SetPair(HalfEdge alpha)
{
if (OwnsEdges(alpha))
{
return;
}
Alpha = alpha;
if (Alpha != null)
{
Alpha.SetPair(this);
}
if (Beta != null)
{
Beta.SetPair(this);
}
}