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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.
*/
/** \file
* \ingroup bmesh
*
* Basic mirror, optionally with UVs's.
*/
#include "MEM_guardedalloc.h"
#include "DNA_meshdata_types.h"
#include "BLI_math.h"
#include "BKE_customdata.h"
#include "bmesh.h"
#include "intern/bmesh_operators_private.h" /* own include */
#define ELE_NEW 1
void bmo_mirror_exec(BMesh *bm, BMOperator *op)
{
BMOperator dupeop, weldop;
BMOIter siter;
BMIter iter;
BMVert *v, **vmap;
int vmap_size = 0;
float mtx[4][4];
float imtx[4][4];
float scale[3] = {1.0f, 1.0f, 1.0f};
float dist = BMO_slot_float_get(op->slots_in, "merge_dist");
int i, ototvert;
int axis = BMO_slot_int_get(op->slots_in, "axis");
bool mirror_u = BMO_slot_bool_get(op->slots_in, "mirror_u");
bool mirror_v = BMO_slot_bool_get(op->slots_in, "mirror_v");
BMOpSlot *slot_targetmap;
ototvert = bm->totvert;
BMO_slot_mat4_get(op->slots_in, "matrix", mtx);
invert_m4_m4(imtx, mtx);
BMO_op_initf(bm, &dupeop, op->flag, "duplicate geom=%s", op, "geom");
BMO_op_exec(bm, &dupeop);
BMO_slot_buffer_flag_enable(bm, dupeop.slots_out, "geom.out", BM_ALL_NOLOOP, ELE_NEW);
/* create old -> new mappin */
vmap = BMO_iter_as_arrayN(dupeop.slots_out, "geom.out", BM_VERT, &vmap_size, NULL, 0);
/* feed old data to transform bmo */
scale[axis] = -1.0f;
BMO_op_callf(bm, op->flag, "transform verts=%fv matrix=%m4", ELE_NEW, mtx);
BMO_op_callf(bm, op->flag, "scale verts=%fv vec=%v", ELE_NEW, scale);
BMO_op_callf(bm, op->flag, "transform verts=%fv matrix=%m4", ELE_NEW, imtx);
BMO_op_init(bm, &weldop, op->flag, "weld_verts");
slot_targetmap = BMO_slot_get(weldop.slots_in, "targetmap");
v = BM_iter_new(&iter, bm, BM_VERTS_OF_MESH, NULL);
for (i = 0; i < ototvert; i++) {
if (fabsf(v->co[axis]) <= dist) {
BLI_assert(vmap_size >= i);
BMO_slot_map_elem_insert(&weldop, slot_targetmap, vmap[i], v);
}
v = BM_iter_step(&iter);
}
if (mirror_u || mirror_v) {
BMFace *f;
BMLoop *l;
MLoopUV *luv;
const int totlayer = CustomData_number_of_layers(&bm->ldata, CD_MLOOPUV);
BMIter liter;
BMO_ITER (f, &siter, dupeop.slots_out, "geom.out", BM_FACE) {
BM_ITER_ELEM (l, &liter, f, BM_LOOPS_OF_FACE) {
for (i = 0; i < totlayer; i++) {
luv = CustomData_bmesh_get_n(&bm->ldata, l->head.data, CD_MLOOPUV, i);
if (mirror_u) {
luv->uv[0] = 1.0f - luv->uv[0];
}
if (mirror_v) {
luv->uv[1] = 1.0f - luv->uv[1];
}
}
}
}
}
BMO_op_exec(bm, &weldop);
BMO_op_finish(bm, &weldop);
BMO_op_finish(bm, &dupeop);
BMO_slot_buffer_from_enabled_flag(bm, op, op->slots_out, "geom.out", BM_ALL_NOLOOP, ELE_NEW);
if (vmap) {
MEM_freeN(vmap);
}
}
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