editmesh accessor functions. most editmesh access now goes through:

EditMesh *EM_GetEditMesh(Mesh *me);
void EM_EndEditMesh(Mesh *me, EditMesh *em);

as discussed on the mailling list, this is to facilitate migration to bmesh.
next step is to merge this this to the bmesh branch.  this was done in the 2.5
branch to prevent too great a divergance.

also, made makesdna/makesrna work on cygwin/msvc2008/scons.

1 files changed, 8 insertions, 3 deletions

diff --git a/source/blender/editors/mesh/editmesh_loop.c b/source/blender/editors/mesh/editmesh_loop.c
index af85a041b1b..333c3a1f2c1 100644
--- a/source/blender/editors/mesh/editmesh_loop.c
+++ b/source/blender/editors/mesh/editmesh_loop.c
@@ -625,7 +625,7 @@ static float seg_intersect(EditEdge *e, CutCurve *c, int len, char mode, struct
 static int knife_cut_exec(bContext *C, wmOperator *op)
 {
 	Object *obedit= CTX_data_edit_object(C);
-	EditMesh *em= ((Mesh *)obedit->data)->edit_mesh;
+	EditMesh *em= EM_GetEditMesh(((Mesh *)obedit->data));
 	ARegion *ar= CTX_wm_region(C);
 	EditEdge *eed;
 	EditVert *eve;
@@ -638,6 +638,7 @@ static int knife_cut_exec(bContext *C, wmOperator *op)
 	
 	if (EM_nvertices_selected(em) < 2) {
 		error("No edges are selected to operate on");
+		EM_EndEditMesh(obedit->data, em);
 		return OPERATOR_CANCELLED;;
 	}
 
@@ -650,8 +651,11 @@ static int knife_cut_exec(bContext *C, wmOperator *op)
 	}
 	RNA_END;
 	
-	if(len<2) return OPERATOR_CANCELLED;
-	
+	if(len<2) {
+		EM_EndEditMesh(obedit->data, em);
+		return OPERATOR_CANCELLED;
+	}
+
 	/*store percentage of edge cut for KNIFE_EXACT here.*/
 	for(eed=em->edges.first; eed; eed= eed->next) 
 		eed->tmp.fp = 0.0; 
@@ -698,6 +702,7 @@ static int knife_cut_exec(bContext *C, wmOperator *op)
 	
 	BLI_ghash_free(gh, NULL, (GHashValFreeFP)MEM_freeN);
 	
+	EM_EndEditMesh(obedit->data, em);
 	return OPERATOR_FINISHED;
 }