diff options
Diffstat (limited to 'source/blender/bmesh/operators/bmo_poke.c')
| -rw-r--r-- | source/blender/bmesh/operators/bmo_poke.c | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/source/blender/bmesh/operators/bmo_poke.c b/source/blender/bmesh/operators/bmo_poke.c new file mode 100644 index 00000000000..7105210da04 --- /dev/null +++ b/source/blender/bmesh/operators/bmo_poke.c @@ -0,0 +1,141 @@ +/* + * ***** 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): Francisco De La Cruz + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/bmesh/operators/bmo_poke.c + * \ingroup bmesh + * + * Pokes a face. + * + * Splits a face into a triangle fan. + */ + +#include "BLI_math.h" + +#include "bmesh.h" + +#include "intern/bmesh_operators_private.h" /* own include */ + +#define ELE_NEW 1 + +/** + * Pokes a face + * + * Splits a face into a triangle fan. + * Iterate over all selected faces, create a new center vertex and + * create triangles between original face edges and new center vertex. + */ +void bmo_poke_exec(BMesh *bm, BMOperator *op) +{ + BMOIter oiter; + BMFace *f; + + const float offset = BMO_slot_float_get(op->slots_in, "offset"); + const bool use_relative_offset = BMO_slot_bool_get(op->slots_in, "use_relative_offset"); + const int center_mode = BMO_slot_int_get(op->slots_in, "center_mode"); + void (*bm_face_calc_center_fn)(BMFace *f, float r_cent[3]); + + switch (center_mode) { + case BMOP_POKE_MEAN_WEIGHTED: + bm_face_calc_center_fn = BM_face_calc_center_mean_weighted; + break; + case BMOP_POKE_BOUNDS: + bm_face_calc_center_fn = BM_face_calc_center_bounds; + break; + case BMOP_POKE_MEAN: + bm_face_calc_center_fn = BM_face_calc_center_mean; + break; + default: + BLI_assert(0); + break; + } + + BMO_ITER(f, &oiter, op->slots_in, "faces", BM_FACE) { + BMFace *f_new; + float f_center[3]; + BMVert *v_center = NULL; + BMLoop *l_iter, *l_first; + /* only interpolate the centeral loop from the face once, + * then copy to all others in the fan */ + BMLoop *l_center_example; + + /* 1.0 or the average length from the center to the face verts */ + float offset_fac; + + int i; + + bm_face_calc_center_fn(f, f_center); + v_center = BM_vert_create(bm, f_center, NULL, 0); + BMO_elem_flag_enable(bm, v_center, ELE_NEW); + + /* handled by BM_loop_interp_from_face */ + // BM_vert_interp_from_face(bm, v_center, f); + + if (use_relative_offset) { + offset_fac = 0.0f; + } + else { + offset_fac = 1.0f; + } + + i = 0; + l_iter = l_first = BM_FACE_FIRST_LOOP(f); + do { + BMLoop *l_new; + + f_new = BM_face_create_quad_tri(bm, l_iter->v, l_iter->next->v, v_center, NULL, f, false); + l_new = BM_FACE_FIRST_LOOP(f_new); + + if (i == 0) { + l_center_example = l_new->prev; + BM_loop_interp_from_face(bm, l_center_example, f, true, true); + } + else { + BM_elem_attrs_copy(bm, bm, l_center_example, l_new->prev); + } + + /* Copy Loop Data */ + BM_elem_attrs_copy(bm, bm, l_iter, l_new); + BM_elem_attrs_copy(bm, bm, l_iter->next, l_new->next); + + BMO_elem_flag_enable(bm, f_new, ELE_NEW); + + if (use_relative_offset) { + offset_fac += len_v3v3(f_center, l_iter->v->co); + } + + } while (i++, (l_iter = l_iter->next) != l_first); + + if (use_relative_offset) { + offset_fac /= (float)f->len; + } + /* else remain at 1.0 */ + + copy_v3_v3(v_center->no, f->no); + madd_v3_v3fl(v_center->co, v_center->no, offset * offset_fac); + + /* Kill Face */ + BM_face_kill(bm, f); + } + + BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "verts.out", BM_VERT, ELE_NEW); + BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "faces.out", BM_FACE, ELE_NEW); +} |