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/*
* ***** 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): Blender Foundation
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenkernel/intern/mesh_iterators.c
* \ingroup bke
*
* Functions for iterating mesh features.
*/
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BKE_customdata.h"
#include "BKE_mesh.h"
#include "BKE_mesh_iterators.h"
/* Copied from cdDM_foreachMappedVert */
void BKE_mesh_foreach_mapped_vert(
Mesh *mesh,
void (*func)(void *userData, int index, const float co[3], const float no_f[3], const short no_s[3]),
void *userData,
MeshForeachFlag flag)
{
MVert *mv = mesh->mvert;
const int *index = CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX);
int i;
if (index) {
for (i = 0; i < mesh->totvert; i++, mv++) {
const short *no = (flag & MESH_FOREACH_USE_NORMAL) ? mv->no : NULL;
const int orig = *index++;
if (orig == ORIGINDEX_NONE) continue;
func(userData, orig, mv->co, NULL, no);
}
}
else {
for (i = 0; i < mesh->totvert; i++, mv++) {
const short *no = (flag & MESH_FOREACH_USE_NORMAL) ? mv->no : NULL;
func(userData, i, mv->co, NULL, no);
}
}
}
/* Copied from cdDM_foreachMappedEdge */
void BKE_mesh_foreach_mapped_edge(
Mesh *mesh,
void (*func)(void *userData, int index, const float v0co[3], const float v1co[3]),
void *userData)
{
MVert *mv = mesh->mvert;
MEdge *med = mesh->medge;
int i, orig, *index = CustomData_get_layer(&mesh->edata, CD_ORIGINDEX);
for (i = 0; i < mesh->totedge; i++, med++) {
if (index) {
orig = *index++;
if (orig == ORIGINDEX_NONE) continue;
func(userData, orig, mv[med->v1].co, mv[med->v2].co);
}
else
func(userData, i, mv[med->v1].co, mv[med->v2].co);
}
}
/* Copied from cdDM_foreachMappedLoop */
void BKE_mesh_foreach_mapped_loop(
Mesh *mesh,
void (*func)(void *userData, int vertex_index, int face_index, const float co[3], const float no[3]),
void *userData,
MeshForeachFlag flag)
{
/* We can't use dm->getLoopDataLayout(dm) here, we want to always access dm->loopData, EditDerivedBMesh would
* return loop data from bmesh itself. */
const float (*lnors)[3] = (flag & MESH_FOREACH_USE_NORMAL) ? CustomData_get_layer(&mesh->ldata, CD_NORMAL) : NULL;
const MVert *mv = mesh->mvert;
const MLoop *ml = mesh->mloop;
const MPoly *mp = mesh->mpoly;
const int *v_index = CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX);
const int *f_index = CustomData_get_layer(&mesh->pdata, CD_ORIGINDEX);
int p_idx, i;
for (p_idx = 0; p_idx < mesh->totpoly; ++p_idx, ++mp) {
for (i = 0; i < mp->totloop; ++i, ++ml) {
const int v_idx = v_index ? v_index[ml->v] : ml->v;
const int f_idx = f_index ? f_index[p_idx] : p_idx;
const float *no = lnors ? *lnors++ : NULL;
if (!ELEM(ORIGINDEX_NONE, v_idx, f_idx)) {
func(userData, v_idx, f_idx, mv[ml->v].co, no);
}
}
}
}
/* Copied from cdDM_foreachMappedFaceCenter */
void BKE_mesh_foreach_mapped_face_center(
Mesh *mesh,
void (*func)(void *userData, int index, const float cent[3], const float no[3]),
void *userData,
MeshForeachFlag flag)
{
MVert *mvert = mesh->mvert;
MPoly *mp;
MLoop *ml;
int i, orig, *index;
index = CustomData_get_layer(&mesh->pdata, CD_ORIGINDEX);
mp = mesh->mpoly;
for (i = 0; i < mesh->totpoly; i++, mp++) {
float cent[3];
float *no, _no[3];
if (index) {
orig = *index++;
if (orig == ORIGINDEX_NONE) continue;
}
else {
orig = i;
}
ml = &mesh->mloop[mp->loopstart];
BKE_mesh_calc_poly_center(mp, ml, mvert, cent);
if (flag & MESH_FOREACH_USE_NORMAL) {
BKE_mesh_calc_poly_normal(mp, ml, mvert, (no = _no));
}
else {
no = NULL;
}
func(userData, orig, cent, no);
}
}
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