Mesh Inset: following existing edges is now optional

2 files changed, 6 insertions, 1 deletions

diff --git a/source/blender/bmesh/intern/bmesh_opdefines.c b/source/blender/bmesh/intern/bmesh_opdefines.c
index b4697935da5..0c75597282e 100644
--- a/source/blender/bmesh/intern/bmesh_opdefines.c
+++ b/source/blender/bmesh/intern/bmesh_opdefines.c
@@ -1673,6 +1673,7 @@ static BMOpDefine bmo_inset_region_def = {
 	 {"use_even_offset", BMO_OP_SLOT_BOOL},
 	 {"use_interpolate", BMO_OP_SLOT_BOOL},
 	 {"use_relative_offset", BMO_OP_SLOT_BOOL},
+	 {"use_edge_rail", BMO_OP_SLOT_BOOL},
 	 {"thickness", BMO_OP_SLOT_FLT},
 	 {"depth", BMO_OP_SLOT_FLT},
 	 {"use_outset", BMO_OP_SLOT_BOOL},
diff --git a/source/blender/bmesh/operators/bmo_inset.c b/source/blender/bmesh/operators/bmo_inset.c
index c79480d47dd..a255c534736 100644
--- a/source/blender/bmesh/operators/bmo_inset.c
+++ b/source/blender/bmesh/operators/bmo_inset.c
@@ -390,6 +390,7 @@ void bmo_inset_region_exec(BMesh *bm, BMOperator *op)
 	const bool use_even_offset     = BMO_slot_bool_get(op->slots_in, "use_even_offset");
 	const bool use_even_boundry    = use_even_offset; /* could make own option */
 	const bool use_relative_offset = BMO_slot_bool_get(op->slots_in, "use_relative_offset");
+	const bool use_edge_rail       = BMO_slot_bool_get(op->slots_in, "use_edge_rail");
 	const bool use_interpolate     = BMO_slot_bool_get(op->slots_in, "use_interpolate");
 	const float thickness          = BMO_slot_float_get(op->slots_in, "thickness");
 	const float depth              = BMO_slot_float_get(op->slots_in, "depth");
@@ -616,7 +617,10 @@ void bmo_inset_region_exec(BMesh *bm, BMOperator *op)
 							 * cross product between both face normals */
 							add_v3_v3v3(tvec, e_info_a->no, e_info_b->no);
 
-							if (f_a != f_b) {
+							if (use_edge_rail == false) {
+								/* pass */
+							}
+							else if (f_a != f_b) {
 								/* these lookups are very quick */
 								BMLoop *l_other_a = BM_loop_other_vert_loop(e_info_a->l, v_split);
 								BMLoop *l_other_b = BM_loop_other_vert_loop(e_info_b->l, v_split);