diff options
Diffstat (limited to 'source/blender/bmesh/operators/bmo_extrude.c')
-rw-r--r-- | source/blender/bmesh/operators/bmo_extrude.c | 56 |
1 files changed, 35 insertions, 21 deletions
diff --git a/source/blender/bmesh/operators/bmo_extrude.c b/source/blender/bmesh/operators/bmo_extrude.c index b716f92d31c..ef0833120c5 100644 --- a/source/blender/bmesh/operators/bmo_extrude.c +++ b/source/blender/bmesh/operators/bmo_extrude.c @@ -118,39 +118,53 @@ void bmo_extrude_face_indiv_exec(BMesh *bm, BMOperator *op) BMO_slot_buffer_from_enabled_flag(bm, op, "faceout", BM_FACE, EXT_KEEP); } -static void bm_extrude_copy_face_loop_attributes(BMesh *bm, BMFace *f, BMEdge *e, BMEdge *newedge) +/** + * \brief Copy the loop pair from an adjacent face to both sides of this quad. + * + * The face is assumed to be a quad, created by extruding. + * This function won't crash if its not but won't work right either. + * \a e_b is the new edge. + * + * \note this function could be exposed as an api call if other areas need it, + * so far only extrude does. + */ +static void bm_extrude_copy_face_loop_attributes(BMesh *bm, BMFace *f, BMEdge *e_a, BMEdge *e_b) { /* 'a' is the starting edge #e, 'b' is the final edge #newedge */ - BMLoop *l_dst_a = BM_face_edge_share_loop(f, e); - BMLoop *l_dst_b = newedge->l; /* will only ever be one loop */ - BMLoop *l_src_a = l_dst_a->radial_next; + BMLoop *l_dst_a = BM_face_edge_share_loop(f, e_a); + BMLoop *l_dst_b = BM_face_edge_share_loop(f, e_b); + /* we could only have a face on one-or the other edges, + * chech if either side of the face has an adjacent face */ + BMLoop *l_src_1; + BMLoop *l_src_2; + /* there is no l_src_b */ /* sanity */ - BLI_assert(l_src_a->f != l_dst_a->f); BLI_assert(l_dst_a->f == l_dst_b->f); + if (l_dst_a != l_dst_a->radial_next) { + l_src_1 = l_dst_a->radial_next; + l_src_2 = l_src_1->next; + } + else if (l_dst_b != l_dst_b->radial_next) { + l_src_2 = l_dst_b->radial_next; + l_src_1 = l_src_2->next; + } + else { + /* no new faces on either edge, nothing to copy from */ + return; + } - BM_elem_attrs_copy(bm, bm, l_src_a->f, l_dst_a->f); + BM_elem_attrs_copy(bm, bm, l_src_1->f, l_dst_a->f); BM_elem_flag_disable(f, BM_ELEM_HIDDEN); /* possibly we copy from a hidden face */ - /* copy data */ - if (l_src_a->v == l_dst_a->v) { - BM_elem_attrs_copy(bm, bm, l_src_a, l_dst_a); - BM_elem_attrs_copy(bm, bm, l_src_a, l_dst_b->next); - - BM_elem_attrs_copy(bm, bm, l_src_a->next, l_dst_a->next); - BM_elem_attrs_copy(bm, bm, l_src_a->next, l_dst_b); - } - else { - l_src_a = l_src_a->next; - BM_elem_attrs_copy(bm, bm, l_src_a, l_dst_a); - BM_elem_attrs_copy(bm, bm, l_src_a, l_dst_b->next); + BM_elem_attrs_copy(bm, bm, l_src_2, l_dst_a); + BM_elem_attrs_copy(bm, bm, l_src_2, l_dst_b->next); - BM_elem_attrs_copy(bm, bm, l_src_a->prev, l_dst_a->next); - BM_elem_attrs_copy(bm, bm, l_src_a->prev, l_dst_b); - } + BM_elem_attrs_copy(bm, bm, l_src_1, l_dst_a->next); + BM_elem_attrs_copy(bm, bm, l_src_1, l_dst_b); } void bmo_extrude_edge_only_exec(BMesh *bm, BMOperator *op) |