diff options
Diffstat (limited to 'source/blender/bmesh/intern/bmesh_walkers_impl.c')
| -rw-r--r-- | source/blender/bmesh/intern/bmesh_walkers_impl.c | 83 |
1 files changed, 82 insertions, 1 deletions
diff --git a/source/blender/bmesh/intern/bmesh_walkers_impl.c b/source/blender/bmesh/intern/bmesh_walkers_impl.c index dee50151c61..357fe057380 100644 --- a/source/blender/bmesh/intern/bmesh_walkers_impl.c +++ b/source/blender/bmesh/intern/bmesh_walkers_impl.c @@ -993,6 +993,77 @@ static void *bmw_EdgeringWalker_step(BMWalker *walker) /** \} */ +/** \name Boundary Edge Walker + * \{ */ + +static void bmw_EdgeboundaryWalker_begin(BMWalker *walker, void *data) +{ + BMwEdgeboundaryWalker *lwalk; + BMEdge *e = data; + + BLI_assert(BM_edge_is_boundary(e)); + + if (BLI_gset_haskey(walker->visit_set, e)) + return; + + lwalk = BMW_state_add(walker); + lwalk->e = e; + BLI_gset_insert(walker->visit_set, e); +} + +static void *bmw_EdgeboundaryWalker_yield(BMWalker *walker) +{ + BMwEdgeboundaryWalker *lwalk = BMW_current_state(walker); + + if (!lwalk) { + return NULL; + } + + return lwalk->e; +} + +static void *bmw_EdgeboundaryWalker_step(BMWalker *walker) +{ + BMwEdgeboundaryWalker *lwalk, owalk; + BMEdge *e, *e_other; + BMVert *v; + BMIter eiter; + BMIter viter; + + BMW_state_remove_r(walker, &owalk); + lwalk = &owalk; + + e = lwalk->e; + + if (!bmw_mask_check_edge(walker, e)) { + return e; + } + + BM_ITER_ELEM (v, &viter, e, BM_VERTS_OF_EDGE) { + BM_ITER_ELEM (e_other, &eiter, v, BM_EDGES_OF_VERT) { + if (e != e_other && BM_edge_is_boundary(e_other)) { + if (BLI_gset_haskey(walker->visit_set, e_other)) { + continue; + } + + if (!bmw_mask_check_edge(walker, e_other)) { + continue; + } + + lwalk = BMW_state_add(walker); + BLI_gset_insert(walker->visit_set, e_other); + + lwalk->e = e_other; + } + } + } + + return e; +} + +/** \} */ + + /** \name UV Edge Walker * \{ */ @@ -1133,7 +1204,16 @@ static BMWalker bmw_EdgeringWalker_Type = { bmw_EdgeringWalker_yield, sizeof(BMwEdgeringWalker), BMW_DEPTH_FIRST, - 0, /* valid restrict masks */ /* could add flags here but so far none are used */ + BM_EDGE, /* valid restrict masks */ +}; + +static BMWalker bmw_EdgeboundaryWalker_Type = { + bmw_EdgeboundaryWalker_begin, + bmw_EdgeboundaryWalker_step, + bmw_EdgeboundaryWalker_yield, + sizeof(BMwEdgeboundaryWalker), + BMW_DEPTH_FIRST, + 0, }; static BMWalker bmw_UVEdgeWalker_Type = { @@ -1159,6 +1239,7 @@ BMWalker *bm_walker_types[] = { &bmw_LoopWalker_Type, /* BMW_LOOP */ &bmw_FaceLoopWalker_Type, /* BMW_FACELOOP */ &bmw_EdgeringWalker_Type, /* BMW_EDGERING */ + &bmw_EdgeboundaryWalker_Type, /* BMW_EDGEBOUNDARY */ &bmw_UVEdgeWalker_Type, /* BMW_LOOPDATA_ISLAND */ &bmw_IslandboundWalker_Type, /* BMW_ISLANDBOUND */ &bmw_IslandWalker_Type, /* BMW_ISLAND */ |