public static Edge MakeEdge(Edge eNext)
{
EdgePair edgePair = EdgePair.Create();
Edge e = edgePair._e;
Edge eSym = edgePair._eSym;
Edge.EnsureFirst(ref eNext);
(eSym._next = eNext._Sym._next)._Sym._next = e;
e._next = eNext;
eNext._Sym._next = eSym;
e._Sym = eSym;
Edge edge = e;
edge._Onext = edge;
e._Lnext = eSym;
e._Org = null;
e._Lface = null;
e._winding = 0;
e._activeRegion = null;
eSym._Sym = e;
Edge edge2 = eSym;
edge2._Onext = edge2;
eSym._Lnext = e;
eSym._Org = null;
eSym._Lface = null;
eSym._winding = 0;
eSym._activeRegion = null;
return(e);
}
/// <summary>
/// MakeEdge creates a new pair of half-edges which form their own loop.
/// No vertex or face structures are allocated, but these must be assigned
/// before the current edge operation is completed.
/// </summary>
public static Edge MakeEdge(Edge eNext)
{
Debug.Assert(eNext != null);
var pair = EdgePair.Create();
var e = pair._e;
var eSym = pair._eSym;
// Make sure eNext points to the first edge of the edge pair
Edge.EnsureFirst(ref eNext);
// Insert in circular doubly-linked list before eNext.
// Note that the prev pointer is stored in Sym->next.
var ePrev = eNext._Sym._next;
eSym._next = ePrev;
ePrev._Sym._next = e;
e._next = eNext;
eNext._Sym._next = eSym;
e._Sym = eSym;
e._Onext = e;
e._Lnext = eSym;
e._Org = null;
e._Lface = null;
e._winding = 0;
e._activeRegion = null;
eSym._Sym = e;
eSym._Onext = eSym;
eSym._Lnext = e;
eSym._Org = null;
eSym._Lface = null;
eSym._winding = 0;
eSym._activeRegion = null;
return(e);
}