Index: trunk/src/obj_common.h
===================================================================
--- trunk/src/obj_common.h	(revision 31067)
+++ trunk/src/obj_common.h	(revision 31068)
@@ -290,6 +290,11 @@
 	return (size_t)obj / pcb_size_class(sizeof(pcb_any_obj_t));
 }
 
+/* Assuming clearance is happening (flags), clearance of an object
+   in a polygon is the bigger of the obj's ->clearance and the polygon's
+   ->enforce_clearance */
+#define pcb_obj_clearance(obj, in_poly) \
+	(RND_MAX((obj)->Clearance, (in_poly)->enforce_clearance))
 
 #define pcb_obj_id_reg(data, obj) \
 	do { \
Index: trunk/src/obj_poly.h
===================================================================
--- trunk/src/obj_poly.h	(revision 31067)
+++ trunk/src/obj_poly.h	(revision 31068)
@@ -39,6 +39,7 @@
 struct pcb_poly_s  {           /* holds information about a polygon */
 	PCB_ANY_PRIMITIVE_FIELDS;
 	rnd_coord_t Clearance;
+	rnd_coord_t enforce_clearance; /* all objects within this polygon needs to have at least this much clearance */
 	rnd_cardinal_t PointN;       /* number of points in polygon */
 	rnd_cardinal_t PointMax;     /* max number from malloc() */
 	rnd_polyarea_t *Clipped;     /* the clipped region of this polygon */