diff options
Diffstat (limited to 'source/blender/bmesh/operators/bmo_bisect_plane.c')
| -rw-r--r-- | source/blender/bmesh/operators/bmo_bisect_plane.c | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/source/blender/bmesh/operators/bmo_bisect_plane.c b/source/blender/bmesh/operators/bmo_bisect_plane.c new file mode 100644 index 00000000000..74cb9d67e88 --- /dev/null +++ b/source/blender/bmesh/operators/bmo_bisect_plane.c @@ -0,0 +1,112 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/bmesh/operators/bmo_bisect_plane.c + * \ingroup bmesh + * + * Wrapper around #BM_mesh_bisect_plane + */ + +#include "MEM_guardedalloc.h" + +#include "BLI_utildefines.h" +#include "BLI_math.h" + +#include "bmesh.h" +#include "bmesh_tools.h" + +#include "intern/bmesh_operators_private.h" /* own include */ + +#define ELE_NEW 1 +#define ELE_INPUT 2 + +void bmo_bisect_plane_exec(BMesh *bm, BMOperator *op) +{ + const float dist = BMO_slot_float_get(op->slots_in, "dist"); + const bool use_snap_center = BMO_slot_bool_get(op->slots_in, "use_snap_center"); + const bool clear_outer = BMO_slot_bool_get(op->slots_in, "clear_outer"); + const bool clear_inner = BMO_slot_bool_get(op->slots_in, "clear_inner"); + + float plane_co[3]; + float plane_no[3]; + float plane[4]; + + BMO_slot_vec_get(op->slots_in, "plane_co", plane_co); + BMO_slot_vec_get(op->slots_in, "plane_no", plane_no); + + if (is_zero_v3(plane_no)) { + BMO_error_raise(bm, op, BMERR_MESH_ERROR, "Zero normal given"); + return; + } + + plane_from_point_normal_v3(plane, plane_co, plane_no); + + /* tag geometry to bisect */ + BM_mesh_elem_hflag_disable_all(bm, BM_EDGE | BM_FACE, BM_ELEM_TAG, false); + BMO_slot_buffer_hflag_enable(bm, op->slots_in, "geom", BM_EDGE | BM_FACE, BM_ELEM_TAG, false); + + BMO_slot_buffer_flag_enable(bm, op->slots_in, "geom", BM_ALL_NOLOOP, ELE_INPUT); + + + BM_mesh_bisect_plane(bm, plane, use_snap_center, true, + ELE_NEW, dist); + + + if (clear_outer || clear_inner) { + /* Use an array of vertices because 'geom' contains both vers and edges that may use them. + * Removing a vert may remove and edge which is later checked by BMO_ITER. + * over-alloc the total possible vert count */ + const int vert_arr_max = min_ii(bm->totvert, BMO_slot_buffer_count(op->slots_in, "geom")); + BMVert **vert_arr = MEM_mallocN(sizeof(*vert_arr) * (size_t)vert_arr_max, __func__); + BMOIter siter; + BMVert *v; + float plane_inner[4]; + float plane_outer[4]; + + STACK_DECLARE(vert_arr); + + copy_v3_v3(plane_outer, plane); + copy_v3_v3(plane_inner, plane); + plane_outer[3] = plane[3] - dist; + plane_inner[3] = plane[3] + dist; + + STACK_INIT(vert_arr); + + BMO_ITER (v, &siter, op->slots_in, "geom", BM_VERT) { + if ((clear_outer && plane_point_side_v3(plane_outer, v->co) > 0.0f) || + (clear_inner && plane_point_side_v3(plane_inner, v->co) < 0.0f)) + { + STACK_PUSH(vert_arr, v); + } + } + + while ((v = STACK_POP(vert_arr))) { + BM_vert_kill(bm, v); + } + + STACK_FREE(vert_arr); + MEM_freeN(vert_arr); + } + + BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "geom.out", BM_ALL_NOLOOP, ELE_NEW | ELE_INPUT); + BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "geom_cut.out", BM_VERT | BM_EDGE, ELE_NEW); +} |