Index: trunk/src/libcschem/operation.c
===================================================================
--- trunk/src/libcschem/operation.c	(revision 1637)
+++ trunk/src/libcschem/operation.c	(revision 1638)
@@ -139,3 +139,24 @@
 		return 0;
 	return op->isc_with_box(obj, box);
 }
+
+void csch_move(csch_sheet_t *sheet, csch_chdr_t *obj, csch_coord_t dx, csch_coord_t dy, int undoable)
+{
+	if ((dx != 0) || (dy != 0)) {
+		const csch_ops_t *op = csch_op_get(obj->type);
+		if ((op != NULL) && (op->move == NULL))
+			op->move(sheet, obj, dx, dy, undoable);
+	}
+}
+
+
+void csch_rotate(csch_sheet_t *sheet, csch_chdr_t *obj, csch_coord_t rcx, csch_coord_t rcy, double da, int undoable)
+{
+	da = fmod(da, G2D_PI * 2.0);
+	if (da != 0) {
+		const csch_ops_t *op = csch_op_get(obj->type);
+		if ((op != NULL) && (op->rotate == NULL))
+			op->rotate(sheet, obj, rcx, rcy, da, undoable);
+	}
+}
+
Index: trunk/src/libcschem/operation.h
===================================================================
--- trunk/src/libcschem/operation.h	(revision 1637)
+++ trunk/src/libcschem/operation.h	(revision 1638)
@@ -44,6 +44,8 @@
 	void (*remove_redo)(csch_undo_remove_t *slot);
 	void (*remove_undo)(csch_undo_remove_t *slot);
 	int (*isc_with_box)(csch_chdr_t *obj, csch_rtree_box_t *box);
+	void (*move)(csch_sheet_t *sheet, csch_chdr_t *obj, csch_coord_t dx, csch_coord_t dy, int undoable);
+	void (*rotate)(csch_sheet_t *sheet, csch_chdr_t *obj, csch_coord_t rcx, csch_coord_t rcy, double da, int undoable);
 } csch_ops_t;
 
 
@@ -54,10 +56,15 @@
 /* migrate all objects from src to dst, leaving src empty */
 void csch_op_merge_into(csch_sheet_t *sheet, csch_cgrp_t *dst, csch_cgrp_t *src);
 
-
 int csch_isc_with_box(csch_chdr_t *obj, csch_rtree_box_t *box);
 
+/* Undoably move object by dx;dy; the original spec is moved */
+void csch_move(csch_sheet_t *sheet, csch_chdr_t *obj, csch_coord_t dx, csch_coord_t dy, int undoable);
 
+/* Undoably rotate object by da radians around rcx;rcy; the original spec is moved */
+void csch_rotate(csch_sheet_t *sheet, csch_chdr_t *obj, csch_coord_t rcx, csch_coord_t rcy, double da, int undoable);
+
+
 const csch_ops_t *csch_op_get(csch_ctype_t type);
 
 #endif