Index: trunk/src/data.c
===================================================================
--- trunk/src/data.c	(revision 19699)
+++ trunk/src/data.c	(revision 19700)
@@ -426,6 +426,46 @@
 	}
 }
 
+void pcb_data_scale(pcb_data_t *data, double sx, double sy, double sth, int recurse)
+{
+	if ((sx == 1.0) && (sy == 1.0) && (sth == 1.0))
+		return;
+
+	PCB_PADSTACK_LOOP(data);
+	{
+		pcb_pstk_scale(padstack, sx, sy);
+	}
+	PCB_END_LOOP;
+	if (recurse) {
+		PCB_SUBC_LOOP(data);
+		{
+			pcb_subc_scale(data, subc, sx, sy, sth, 1);
+		}
+		PCB_END_LOOP;
+	}
+	PCB_LINE_ALL_LOOP(data);
+	{
+		pcb_line_scale(line, sx, sy, sth);
+	}
+	PCB_ENDALL_LOOP;
+	PCB_ARC_ALL_LOOP(data);
+	{
+		pcb_arc_scale(arc, sx, sy, sth);
+	}
+	PCB_ENDALL_LOOP;
+	PCB_POLY_ALL_LOOP(data);
+	{
+		pcb_poly_scale(polygon, sx, sy);
+	}
+	PCB_ENDALL_LOOP;
+	PCB_TEXT_ALL_LOOP(data);
+	{
+		pcb_text_scale(text, sx, sy, sth);
+	}
+	PCB_ENDALL_LOOP;
+}
+
+
 int pcb_data_normalize_(pcb_data_t *data, pcb_box_t *data_bbox)
 {
 	pcb_box_t tmp;
Index: trunk/src/data.h
===================================================================
--- trunk/src/data.h	(revision 19699)
+++ trunk/src/data.h	(revision 19700)
@@ -164,6 +164,10 @@
 
 void pcb_data_move(pcb_data_t *data, pcb_coord_t dx, pcb_coord_t dy);
 
+/* Multiply x and y coords by sx and sy and thickness by sth (where applicable).
+   If recurse is non-zero, also modify subcircuits */
+void pcb_data_scale(pcb_data_t *data, double sx, double sy, double sth, int recurse);
+
 /* run pcb_poly_init_clip() on all polygons in data */
 void pcb_data_clip_polys(pcb_data_t *data);