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/*
* 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.
*
* The Original Code is Copyright (C) 2019 Blender Foundation.
* All rights reserved.
*/
/** \file
* \ingroup edmesh
*
* Utility functions for merging geometry once transform has finished:
*
* - #EDBM_automerge
* - #EDBM_automerge_and_split
*/
#include "BKE_editmesh.h"
#include "DNA_object_types.h"
#include "ED_mesh.h"
#include "tools/bmesh_intersect_edges.h"
//#define DEBUG_TIME
#ifdef DEBUG_TIME
# include "PIL_time.h"
#endif
/* use bmesh operator flags for a few operators */
#define BMO_ELE_TAG 1
/* -------------------------------------------------------------------- */
/** \name Auto-Merge Selection
*
* Used after transform operations.
* \{ */
void EDBM_automerge(Object *obedit, bool update, const char hflag, const float dist)
{
BMEditMesh *em = BKE_editmesh_from_object(obedit);
BMesh *bm = em->bm;
int totvert_prev = bm->totvert;
BMOperator findop, weldop;
/* Search for doubles among all vertices, but only merge non-VERT_KEEP
* vertices into VERT_KEEP vertices. */
BMO_op_initf(bm,
&findop,
BMO_FLAG_DEFAULTS,
"find_doubles verts=%av keep_verts=%Hv dist=%f",
hflag,
dist);
BMO_op_exec(bm, &findop);
/* weld the vertices */
BMO_op_init(bm, &weldop, BMO_FLAG_DEFAULTS, "weld_verts");
BMO_slot_copy(&findop, slots_out, "targetmap.out", &weldop, slots_in, "targetmap");
BMO_op_exec(bm, &weldop);
BMO_op_finish(bm, &findop);
BMO_op_finish(bm, &weldop);
if ((totvert_prev != bm->totvert) && update) {
EDBM_update(obedit->data,
&(const struct EDBMUpdate_Params){
.calc_looptri = true,
.calc_normals = false,
.is_destructive = true,
});
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Auto-Merge & Split Selection
*
* Used after transform operations.
* \{ */
void EDBM_automerge_and_split(Object *obedit,
const bool UNUSED(split_edges),
const bool split_faces,
const bool update,
const char hflag,
const float dist)
{
bool ok = false;
BMEditMesh *em = BKE_editmesh_from_object(obedit);
BMesh *bm = em->bm;
#ifdef DEBUG_TIME
em->bm = BM_mesh_copy(bm);
double t1 = PIL_check_seconds_timer();
EDBM_automerge(obedit, false, hflag, dist);
t1 = PIL_check_seconds_timer() - t1;
BM_mesh_free(em->bm);
em->bm = bm;
double t2 = PIL_check_seconds_timer();
#endif
BMOperator weldop;
BMOpSlot *slot_targetmap;
BMO_op_init(bm, &weldop, BMO_FLAG_DEFAULTS, "weld_verts");
slot_targetmap = BMO_slot_get(weldop.slots_in, "targetmap");
GHash *ghash_targetmap = BMO_SLOT_AS_GHASH(slot_targetmap);
ok = BM_mesh_intersect_edges(bm, hflag, dist, split_faces, ghash_targetmap);
if (ok) {
BMO_op_exec(bm, &weldop);
}
BMO_op_finish(bm, &weldop);
#ifdef DEBUG_TIME
t2 = PIL_check_seconds_timer() - t2;
printf("t1: %lf; t2: %lf; fac: %lf\n", t1, t2, t1 / t2);
#endif
if (LIKELY(ok) && update) {
EDBM_update(obedit->data,
&(const struct EDBMUpdate_Params){
.calc_looptri = true,
.calc_normals = false,
.is_destructive = true,
});
}
}
/** \} */
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