Index: trunk/src/obj_subc.c
===================================================================
--- trunk/src/obj_subc.c	(revision 9775)
+++ trunk/src/obj_subc.c	(revision 9776)
@@ -657,7 +657,21 @@
 		DrawSubc(sc);
 }
 
+/* mirrors the coordinates of a subcircuit; an additional offset is passed */
+void pcb_subc_mirror(pcb_data_t *data, pcb_subc_t *subc, pcb_coord_t y_offs)
+{
+	if (data->subc_tree != NULL)
+		pcb_r_delete_entry(data->subc_tree, (pcb_box_t *)subc);
 
+	pcb_data_mirror(subc->data, y_offs);
+	pcb_subc_bbox(subc);
+
+	if (data->subc_tree != NULL)
+		pcb_r_insert_entry(data->subc_tree, (pcb_box_t *)subc, 0);
+}
+
+
+
 #include "conf_core.h"
 #include "draw.h"
 pcb_r_dir_t draw_subc_mark_callback(const pcb_box_t *b, void *cl)
Index: trunk/src/obj_subc.h
===================================================================
--- trunk/src/obj_subc.h	(revision 9775)
+++ trunk/src/obj_subc.h	(revision 9776)
@@ -47,7 +47,9 @@
 int pcb_subc_convert_from_buffer(pcb_buffer_t *buffer);
 pcb_bool pcb_subc_smash_buffer(pcb_buffer_t *buff);
 
+void pcb_subc_mirror(pcb_data_t *data, pcb_subc_t *subc, pcb_coord_t y_offs);
 
+
 void XORDrawSubc(pcb_subc_t *sc, pcb_coord_t DX, pcb_coord_t DY);
 
 #include "rtree.h"