Index: trunk/src/libcschem/cnc_arc.h
===================================================================
--- trunk/src/libcschem/cnc_arc.h	(revision 597)
+++ trunk/src/libcschem/cnc_arc.h	(revision 598)
@@ -35,8 +35,9 @@
 
 typedef struct csch_arc_s {
 	csch_chdr_t hdr;
-	g2d_sarc_t prim;
-	csch_coord_t sx, sy, ex, ey; /* cached start/end coords */
+	g2d_sarc_t inst; /* as installed: group-transformed version (in absolute sheet coordinates) */
+	g2d_carc_t spec; /* as specified: file format version (in relative group coordinates) */
+	csch_coord_t spec_sx, spec_sy, spec_ex, spec_ey; /* cached start/end coords */
 	unsigned svalid:1;
 	unsigned evalid:1;
 } csch_arc_t;
Index: trunk/src/libcschem/cnc_bitmap.h
===================================================================
--- trunk/src/libcschem/cnc_bitmap.h	(revision 597)
+++ trunk/src/libcschem/cnc_bitmap.h	(revision 598)
@@ -32,7 +32,8 @@
 /* type=CSCH_CTYPE_BITMAP */
 typedef struct csch_cbitmap_s {
 	csch_chdr_t hdr;
-	csch_coord_t x1, y1;
+	csch_coord_t inst_x1, inst_y1;
+	csch_coord_t spec_x1, spec_y1;
 	csch_pixel_t transp;
 	int sx, sy; /* size in pixels */
 	csch_pixel_t *bitmap;
Index: trunk/src/libcschem/cnc_line.c
===================================================================
--- trunk/src/libcschem/cnc_line.c	(revision 597)
+++ trunk/src/libcschem/cnc_line.c	(revision 598)
@@ -59,12 +59,17 @@
 }
 
 
-void csch_line_update(csch_line_t *line)
+void csch_line_update(csch_line_t *line, int do_xform)
 {
 	g2d_box_t gb;
 
+	if (do_xform) {
+#warning TODO: apply transformations from parent group
+		line->inst.c = line->spec;
+	}
+
 	csch_obj_bbox_reset(line);
-	gb = g2d_sline_bbox(&line->prim);
+	gb = g2d_sline_bbox(&line->inst);
 	line->hdr.bbox.x1 = gb.p1.x; line->hdr.bbox.y1 = gb.p1.y;
 	line->hdr.bbox.x2 = gb.p2.x; line->hdr.bbox.y2 = gb.p2.y;
 	csch_cobj_update(&line->hdr);
Index: trunk/src/libcschem/cnc_line.h
===================================================================
--- trunk/src/libcschem/cnc_line.h	(revision 597)
+++ trunk/src/libcschem/cnc_line.h	(revision 598)
@@ -35,12 +35,13 @@
 
 typedef struct csch_line_s {
 	csch_chdr_t hdr;
-	g2d_sline_t prim;
+	g2d_sline_t inst; /* as installed: group-transformed version (in absolute sheet coordinates) */
+	g2d_cline_t spec; /* as specified: file format version (in relative group coordinates) */
 } csch_line_t;
 
 csch_line_t *csch_line_alloc(csch_sheet_t *sheet, csch_cgrp_t *parent, csch_oid_t oid);
 void csch_line_free(csch_line_t *line);
 csch_line_t *csch_line_get(csch_sheet_t *sheet, csch_cgrp_t *grp, csch_oid_t oid);
-void csch_line_update(csch_line_t *line);
+void csch_line_update(csch_line_t *line, int do_xform);
 
 #endif
Index: trunk/src/plugins/export_animator/export_animator.c
===================================================================
--- trunk/src/plugins/export_animator/export_animator.c	(revision 597)
+++ trunk/src/plugins/export_animator/export_animator.c	(revision 598)
@@ -81,7 +81,7 @@
 		case CSCH_CTYPE_LINE:
 			{
 				csch_line_t *l = (csch_line_t *)h;
-				csch_coord_t x1 = l->prim.c.p1.x, y1 = l->prim.c.p1.y, x2 = l->prim.c.p2.x, y2 = l->prim.c.p2.y;
+				csch_coord_t x1 = l->inst.c.p1.x, y1 = l->inst.c.p1.y, x2 = l->inst.c.p2.x, y2 = l->inst.c.p2.y;
 				int verts = 10;
 				switch(ctx->pen->shape) {
 					case CSCH_PSHP_ROUND:
Index: trunk/src/plugins/io_lihata/read.c
===================================================================
--- trunk/src/plugins/io_lihata/read.c	(revision 597)
+++ trunk/src/plugins/io_lihata/read.c	(revision 598)
@@ -389,13 +389,13 @@
 
 	line = csch_line_alloc(ctx->sheet, parent, oid);
 
-	if (parse_coord(ctx, &line->prim.c.p1.x, lht_dom_hash_get(subtree, "x1")) != 0)
+	if (parse_coord(ctx, &line->spec.p1.x, lht_dom_hash_get(subtree, "x1")) != 0)
 		return -1;
-	if (parse_coord(ctx, &line->prim.c.p1.y, lht_dom_hash_get(subtree, "y1")) != 0)
+	if (parse_coord(ctx, &line->spec.p1.y, lht_dom_hash_get(subtree, "y1")) != 0)
 		return -1;
-	if (parse_coord(ctx, &line->prim.c.p2.x, lht_dom_hash_get(subtree, "x2")) != 0)
+	if (parse_coord(ctx, &line->spec.p2.x, lht_dom_hash_get(subtree, "x2")) != 0)
 		return -1;
-	if (parse_coord(ctx, &line->prim.c.p2.y, lht_dom_hash_get(subtree, "y2")) != 0)
+	if (parse_coord(ctx, &line->spec.p2.y, lht_dom_hash_get(subtree, "y2")) != 0)
 		return -1;
 	if (parse_oid(ctx, &line->hdr.pen_oid, lht_dom_hash_get(subtree, "pen")) != 0)
 		return -1;