129   if( e1->Dst == event ) {  in EdgeLeq()
130     if( e2->Dst == event ) {  in EdgeLeq()
135 	return EdgeSign( e2->Dst, e1->Org, e2->Org ) <= 0;  in EdgeLeq()
137       return EdgeSign( e1->Dst, e2->Org, e1->Org ) >= 0;  in EdgeLeq()
139     return EdgeSign( e2->Dst, event, e2->Org ) <= 0;  in EdgeLeq()
141   if( e2->Dst == event ) {  in EdgeLeq()
142     return EdgeSign( e1->Dst, event, e1->Org ) >= 0;  in EdgeLeq()
146   t1 = EdgeEval( e1->Dst, event, e1->Org );  in EdgeLeq()
147   t2 = EdgeEval( e2->Dst, event, e2->Org );  in EdgeLeq()
205   GLUvertex *dst = reg->eUp->Dst;  in TopRightRegion()
210   } while( reg->eUp->Dst == dst );  in TopRightRegion()
362     assert( VertLeq( e->Org, e->Dst ));  in AddRightEdges()
532     if( EdgeSign( eLo->Dst, eUp->Org, eLo->Org ) > 0 ) return FALSE;  in CheckForRightSplice()
547     if( EdgeSign( eUp->Dst, eLo->Org, eUp->Org ) < 0 ) return FALSE;  in CheckForRightSplice()
582   assert( ! VertEq( eUp->Dst, eLo->Dst ));  in CheckForLeftSplice()
584   if( VertLeq( eUp->Dst, eLo->Dst )) {  in CheckForLeftSplice()
585     if( EdgeSign( eUp->Dst, eLo->Dst, eUp->Org ) < 0 ) return FALSE;  in CheckForLeftSplice()
594     if( EdgeSign( eLo->Dst, eUp->Dst, eLo->Org ) > 0 ) return FALSE;  in CheckForLeftSplice()
623   GLUvertex *dstUp = eUp->Dst;  in CheckForIntersect()
624   GLUvertex *dstLo = eLo->Dst;  in CheckForIntersect()
792     if( eUp->Dst != eLo->Dst ) {  in WalkDirtyRegions()
814       if(    eUp->Dst != eLo->Dst  in WalkDirtyRegions()
816           && (eUp->Dst == tess->event || eLo->Dst == tess->event) )  in WalkDirtyRegions()
837     if( eUp->Org == eLo->Org && eUp->Dst == eLo->Dst ) {  in WalkDirtyRegions()
889   if( eUp->Dst != eLo->Dst ) {  in ConnectRightVertex()
963   if( ! VertEq( e->Dst, vEvent )) {  in ConnectLeftDegenerate()
1034   if( EdgeSign( eUp->Dst, vEvent, eUp->Org ) == 0 ) {  in ConnectLeftVertex()
1042   reg = VertLeq( eLo->Dst, eUp->Dst ) ? regUp : regLo;  in ConnectLeftVertex()
1144   e->Dst->s = -SENTINEL_COORD;  in AddSentinel()
1145   e->Dst->t = t;  in AddSentinel()
1146   tess->event = e->Dst;		/* initialize it */  in AddSentinel()
1213     if( VertEq( e->Org, e->Dst ) && e->Lnext->Lnext != e ) {  in RemoveDegenerateEdges()