Index: trunk/src/libcschem/cnc_poly.c
===================================================================
--- trunk/src/libcschem/cnc_poly.c	(revision 1360)
+++ trunk/src/libcschem/cnc_poly.c	(revision 1361)
@@ -26,6 +26,9 @@
 
 
 #include "config.h"
+
+#include <librnd/core/error.h>
+
 #include "concrete.h"
 #include "cnc_obj.h"
 #include "cnc_poly.h"
@@ -65,3 +68,37 @@
 	return poly;
 }
 
+void csch_poly_update(csch_sheet_t *sheet, csch_cpoly_t *poly, int do_xform)
+{
+	csch_cobj_update_pen(&poly->hdr);
+	long n;
+	csch_coutline_t *o;
+
+	if (do_xform) {
+		for(n = 0, o = poly->outline.array; n < poly->outline.used; n++, o++) {
+			o->hdr = poly->hdr;
+			switch(o->hdr.type) {
+				case CSCH_CTYPE_LINE: csch_line_update_xform(sheet, &o->line); break;
+				case CSCH_CTYPE_ARC: csch_arc_update_xform(sheet, &o->arc); break;
+				default: rnd_message(RND_MSG_ERROR, "Polygon #%ld contains an invalid object in its contour\n", poly->hdr.oid); break;
+			}
+		}
+	}
+
+	csch_cobj_rtree_del(sheet, &poly->hdr);
+
+	csch_obj_bbox_reset(poly);
+	for(n = 0, o = poly->outline.array; n < poly->outline.used; n++, o++) {
+		switch(o->hdr.type) {
+			case CSCH_CTYPE_LINE: csch_line_update_bbox(sheet, &o->line); break;
+			case CSCH_CTYPE_ARC: csch_arc_update_bbox(sheet, &o->arc); break;
+			default: break; /* already warned above */
+		}
+		csch_bbox_bump(&poly->hdr.bbox, x, o->hdr.bbox.x1);
+		csch_bbox_bump(&poly->hdr.bbox, x, o->hdr.bbox.x2);
+		csch_bbox_bump(&poly->hdr.bbox, y, o->hdr.bbox.y1);
+		csch_bbox_bump(&poly->hdr.bbox, y, o->hdr.bbox.y2);
+	}
+
+	csch_cobj_rtree_add(sheet, &poly->hdr);
+}
Index: trunk/src/libcschem/cnc_poly.h
===================================================================
--- trunk/src/libcschem/cnc_poly.h	(revision 1360)
+++ trunk/src/libcschem/cnc_poly.h	(revision 1361)
@@ -34,7 +34,7 @@
 
 typedef struct csch_cpoly_s {
 	csch_chdr_t hdr;
-	csch_vtcoutline_t outline;
+	csch_vtcoutline_t outline; /* since it is made of lines and arcs, each object contains its spec and inst */
 } csch_cpoly_t;
 
 csch_cpoly_t *csch_cpoly_alloc(csch_sheet_t *sheet, csch_cgrp_t *parent, csch_oid_t oid);
@@ -41,5 +41,7 @@
 csch_cpoly_t *csch_cpoly_dup(csch_sheet_t *sheet, csch_cgrp_t *parent, const csch_cpoly_t *src);
 void csch_cpoly_free(csch_cpoly_t *poly);
 csch_cpoly_t *csch_cpoly_get(csch_sheet_t *sheet, csch_cgrp_t *grp, csch_oid_t oid);
+void csch_poly_update(csch_sheet_t *sheet, csch_cpoly_t *poly, int do_xform);
 
+
 #endif