diff --git a/source/blender/bmesh/operators/bmo_normals.c b/source/blender/bmesh/operators/bmo_normals.c index c4200a37748..4291fc22793 100644 --- a/source/blender/bmesh/operators/bmo_normals.c +++ b/source/blender/bmesh/operators/bmo_normals.c @@ -56,7 +56,7 @@ static bool bmo_recalc_normal_edge_filter_cb(BMEdge *e, void *UNUSED(user_data)) */ static void bmo_recalc_face_normals_array(BMesh *bm, BMFace **faces, const int faces_len, const short oflag) { - float cent[3]; + float cent[3], tvec[3]; float (*faces_center)[3] = MEM_mallocN(sizeof(*faces_center) * faces_len, __func__); const float cent_fac = 1.0f / (float)faces_len; int i, f_start_index; @@ -91,7 +91,8 @@ static void bmo_recalc_face_normals_array(BMesh *bm, BMFace **faces, const int f } /* make sure the starting face has the correct winding */ - if (dot_v3v3(faces_center[f_start_index], faces[f_start_index]->no) < 0.0f) { + sub_v3_v3v3(tvec, faces_center[f_start_index], cent); + if (dot_v3v3(tvec, faces[f_start_index]->no) < 0.0f) { BMO_elem_flag_enable(bm, faces[f_start_index], FACE_FLIP); }