diff options
author | Campbell Barton <ideasman42@gmail.com> | 2013-03-26 02:04:12 +0400 |
---|---|---|
committer | Campbell Barton <ideasman42@gmail.com> | 2013-03-26 02:04:12 +0400 |
commit | be780cb4a682476581e2617c27393145986ccbc1 (patch) | |
tree | e3d93aa768499aef229741670df30f5a4d880a1d /source/blender/bmesh/operators/bmo_beautify.c | |
parent | 8f8613df9022e7c331f81486d21d7d2c4199acf5 (diff) |
code cleanup: move beautify into its own file (more changes coming)
Diffstat (limited to 'source/blender/bmesh/operators/bmo_beautify.c')
-rw-r--r-- | source/blender/bmesh/operators/bmo_beautify.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/source/blender/bmesh/operators/bmo_beautify.c b/source/blender/bmesh/operators/bmo_beautify.c new file mode 100644 index 00000000000..47bc55eb260 --- /dev/null +++ b/source/blender/bmesh/operators/bmo_beautify.c @@ -0,0 +1,122 @@ +/* + * ***** 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): Joseph Eagar. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/bmesh/operators/bmo_beautify.c + * \ingroup bmesh + */ + +#include "BLI_math.h" + +#include "bmesh.h" +#include "intern/bmesh_private.h" + + +#define ELE_NEW 1 +#define FACE_MARK 2 +#define EDGE_MARK 4 + +void bmo_beautify_fill_exec(BMesh *bm, BMOperator *op) +{ + BMOIter siter; + BMIter iter; + BMFace *f; + BMEdge *e; + int stop = 0; + + BMO_slot_buffer_flag_enable(bm, op->slots_in, "edges", BM_EDGE, EDGE_MARK); + + BMO_ITER (f, &siter, op->slots_in, "faces", BM_FACE) { + if (f->len == 3) { + BMO_elem_flag_enable(bm, f, FACE_MARK); + } + } + + while (!stop) { + stop = 1; + + BM_ITER_MESH (e, &iter, bm, BM_EDGES_OF_MESH) { + BMVert *v1, *v2, *v3, *v4; + + if (!BM_edge_is_manifold(e) || !BMO_elem_flag_test(bm, e, EDGE_MARK)) { + continue; + } + + if (!BMO_elem_flag_test(bm, e->l->f, FACE_MARK) || + !BMO_elem_flag_test(bm, e->l->radial_next->f, FACE_MARK)) + { + continue; + } + + v1 = e->l->prev->v; /* first face vert not attached to 'e' */ + v2 = e->l->v; /* e->v1 or e->v2*/ + v3 = e->l->radial_next->prev->v; /* second face vert not attached to 'e' */ + v4 = e->l->next->v; /* e->v1 or e->v2*/ + + if (UNLIKELY(v1 == v3)) { + // printf("This should never happen, but does sometimes!\n"); + continue; + } + + // printf("%p %p %p %p - %p %p\n", v1, v2, v3, v4, e->l->f, e->l->radial_next->f); + BLI_assert((ELEM3(v1, v2, v3, v4) == false) && + (ELEM3(v2, v1, v3, v4) == false) && + (ELEM3(v3, v1, v2, v4) == false) && + (ELEM3(v4, v1, v2, v3) == false)); + + if (is_quad_convex_v3(v1->co, v2->co, v3->co, v4->co)) { + float len1, len2, len3, len4, len5, len6, opp1, opp2, fac1, fac2; + /* testing rule: + * the area divided by the total edge lengths + */ + len1 = len_v3v3(v1->co, v2->co); + len2 = len_v3v3(v2->co, v3->co); + len3 = len_v3v3(v3->co, v4->co); + len4 = len_v3v3(v4->co, v1->co); + len5 = len_v3v3(v1->co, v3->co); + len6 = len_v3v3(v2->co, v4->co); + + opp1 = area_tri_v3(v1->co, v2->co, v3->co); + opp2 = area_tri_v3(v1->co, v3->co, v4->co); + + fac1 = opp1 / (len1 + len2 + len5) + opp2 / (len3 + len4 + len5); + + opp1 = area_tri_v3(v2->co, v3->co, v4->co); + opp2 = area_tri_v3(v2->co, v4->co, v1->co); + + fac2 = opp1 / (len2 + len3 + len6) + opp2 / (len4 + len1 + len6); + + if (fac1 > fac2) { + e = BM_edge_rotate(bm, e, false, BM_EDGEROT_CHECK_EXISTS); + if (e) { + BMO_elem_flag_enable(bm, e, ELE_NEW | EDGE_MARK); + + BMO_elem_flag_enable(bm, e->l->f, FACE_MARK | ELE_NEW); + BMO_elem_flag_enable(bm, e->l->radial_next->f, FACE_MARK | ELE_NEW); + stop = 0; + } + } + } + } + } + + BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "geom.out", BM_EDGE | BM_FACE, ELE_NEW); +} |