57 enum Direction { dRightToLeft, dLeftToRight };  enumerator
2606   return dir == dLeftToRight ? e->NextInAEL : e->PrevInAEL;  in GetNextInAEL()
2616     Dir = dLeftToRight;  in GetHorzDirection()
2655       if (dir == dLeftToRight)  in ProcessHorizontal()
2686             if (dir == dLeftToRight)  in ProcessHorizontal()
2706         if ((dir == dLeftToRight && e->Curr.X > horzRight) ||  in ProcessHorizontal()
2717 			if (dir == dLeftToRight) SetZ(e->Curr, *horzEdge, *e);  in ProcessHorizontal()
2747 		if(dir == dLeftToRight)  in ProcessHorizontal()
3374   Direction Dir1 = (op1->Pt.X > op1b->Pt.X ? dRightToLeft : dLeftToRight);  in JoinHorz()
3375   Direction Dir2 = (op2->Pt.X > op2b->Pt.X ? dRightToLeft : dLeftToRight);  in JoinHorz()
3383   if (Dir1 == dLeftToRight)   in JoinHorz()
3412   if (Dir2 == dLeftToRight)  in JoinHorz()
3440   if ((Dir1 == dLeftToRight) == DiscardLeft)  in JoinHorz()