Index: obj_arc.h
===================================================================
--- obj_arc.h	(nonexistent)
+++ obj_arc.h	(revision 4550)
@@ -0,0 +1,51 @@
+/*
+ *                            COPYRIGHT
+ *
+ *  PCB, interactive printed circuit board design
+ *  Copyright (C) 1994,1995,1996 Thomas Nau
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *  Contact addresses for paper mail and Email:
+ *  Thomas Nau, Schlehenweg 15, 88471 Baustetten, Germany
+ *  Thomas.Nau@rz.uni-ulm.de
+ *
+ */
+
+/* Drawing primitive: (elliptical) arc */
+
+#include "global_typedefs.h"
+
+/*** Memory ***/
+ArcTypePtr GetArcMemory(LayerTypePtr);
+ArcType *GetElementArcMemory(ElementType *Element);
+void RemoveFreeArc(ArcType *data);
+
+/*** Utility ***/
+void SetArcBoundingBox(ArcTypePtr Arc);
+BoxTypePtr GetArcEnds(ArcTypePtr Arc);
+void ChangeArcAngles(LayerTypePtr Layer, ArcTypePtr a, Angle new_sa, Angle new_da);
+void ChangeArcRadii(LayerTypePtr Layer, ArcTypePtr a, Coord new_width, Coord new_height);
+
+
+/*** Operations ***/
+void *AddArcToBuffer(LayerTypePtr Layer, ArcTypePtr Arc);
+void *MoveArcToBuffer(LayerType *layer, ArcType *arc);
+
+
+#define ARC_LOOP(element) do {                                      \
+  ArcType *arc;                                                     \
+  gdl_iterator_t __it__;                                            \
+  linelist_foreach(&(element)->Arc, &__it__, arc) {