Clément Foucault
226c6f086a
Previously in 2.79 we were using a specialized drawing using derivedMesh. Now the subsurf modifier tag each center vertex as facedot and let the DRWManager pick it up. Some modifiers (deforming ones) do not clear the tag so we can use this technique even if there is deforming modifiers after subsurf modifiers.
264 lines
8.5 KiB
C
264 lines
8.5 KiB
C
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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/** \file
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* \ingroup bke
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*
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* Functions for iterating mesh features.
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*/
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "BKE_customdata.h"
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#include "BKE_mesh.h"
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#include "BKE_mesh_iterators.h"
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#include "BLI_bitmap.h"
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#include "BLI_math.h"
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#include "MEM_guardedalloc.h"
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/* Copied from cdDM_foreachMappedVert */
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void BKE_mesh_foreach_mapped_vert(Mesh *mesh,
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void (*func)(void *userData,
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int index,
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const float co[3],
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const float no_f[3],
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const short no_s[3]),
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void *userData,
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MeshForeachFlag flag)
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{
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const MVert *mv = mesh->mvert;
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const int *index = CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX);
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if (index) {
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for (int i = 0; i < mesh->totvert; i++, mv++) {
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const short *no = (flag & MESH_FOREACH_USE_NORMAL) ? mv->no : NULL;
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const int orig = *index++;
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if (orig == ORIGINDEX_NONE) {
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continue;
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}
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func(userData, orig, mv->co, NULL, no);
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}
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}
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else {
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for (int i = 0; i < mesh->totvert; i++, mv++) {
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const short *no = (flag & MESH_FOREACH_USE_NORMAL) ? mv->no : NULL;
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func(userData, i, mv->co, NULL, no);
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}
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}
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}
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/* Copied from cdDM_foreachMappedEdge */
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void BKE_mesh_foreach_mapped_edge(
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Mesh *mesh,
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void (*func)(void *userData, int index, const float v0co[3], const float v1co[3]),
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void *userData)
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{
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const MVert *mv = mesh->mvert;
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const MEdge *med = mesh->medge;
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const int *index = CustomData_get_layer(&mesh->edata, CD_ORIGINDEX);
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if (index) {
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for (int i = 0; i < mesh->totedge; i++, med++) {
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const int orig = *index++;
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if (orig == ORIGINDEX_NONE) {
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continue;
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}
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func(userData, orig, mv[med->v1].co, mv[med->v2].co);
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}
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}
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else {
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for (int i = 0; i < mesh->totedge; i++, med++) {
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func(userData, i, mv[med->v1].co, mv[med->v2].co);
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}
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}
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}
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/* Copied from cdDM_foreachMappedLoop */
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void BKE_mesh_foreach_mapped_loop(Mesh *mesh,
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void (*func)(void *userData,
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int vertex_index,
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int face_index,
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const float co[3],
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const float no[3]),
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void *userData,
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MeshForeachFlag flag)
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{
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/* We can't use dm->getLoopDataLayout(dm) here,
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* we want to always access dm->loopData, EditDerivedBMesh would
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* return loop data from bmesh itself. */
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const float(*lnors)[3] = (flag & MESH_FOREACH_USE_NORMAL) ?
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CustomData_get_layer(&mesh->ldata, CD_NORMAL) :
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NULL;
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const MVert *mv = mesh->mvert;
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const MLoop *ml = mesh->mloop;
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const MPoly *mp = mesh->mpoly;
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const int *v_index = CustomData_get_layer(&mesh->vdata, CD_ORIGINDEX);
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const int *f_index = CustomData_get_layer(&mesh->pdata, CD_ORIGINDEX);
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int p_idx, i;
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if (v_index || f_index) {
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for (p_idx = 0; p_idx < mesh->totpoly; p_idx++, mp++) {
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for (i = 0; i < mp->totloop; i++, ml++) {
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const int v_idx = v_index ? v_index[ml->v] : ml->v;
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const int f_idx = f_index ? f_index[p_idx] : p_idx;
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const float *no = lnors ? *lnors++ : NULL;
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if (ELEM(ORIGINDEX_NONE, v_idx, f_idx)) {
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continue;
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}
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func(userData, v_idx, f_idx, mv[ml->v].co, no);
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}
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}
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}
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else {
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for (p_idx = 0; p_idx < mesh->totpoly; p_idx++, mp++) {
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for (i = 0; i < mp->totloop; i++, ml++) {
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const int v_idx = ml->v;
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const int f_idx = p_idx;
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const float *no = lnors ? *lnors++ : NULL;
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func(userData, v_idx, f_idx, mv[ml->v].co, no);
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}
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}
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}
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}
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/* Copied from cdDM_foreachMappedFaceCenter */
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void BKE_mesh_foreach_mapped_face_center(
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Mesh *mesh,
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void (*func)(void *userData, int index, const float cent[3], const float no[3]),
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void *userData,
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MeshForeachFlag flag)
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{
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const MVert *mvert = mesh->mvert;
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const MPoly *mp = mesh->mpoly;
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const MLoop *ml;
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float _no_buf[3];
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float *no = (flag & MESH_FOREACH_USE_NORMAL) ? _no_buf : NULL;
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const int *index = CustomData_get_layer(&mesh->pdata, CD_ORIGINDEX);
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if (index) {
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for (int i = 0; i < mesh->totpoly; i++, mp++) {
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const int orig = *index++;
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if (orig == ORIGINDEX_NONE) {
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continue;
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}
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float cent[3];
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ml = &mesh->mloop[mp->loopstart];
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BKE_mesh_calc_poly_center(mp, ml, mvert, cent);
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if (flag & MESH_FOREACH_USE_NORMAL) {
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BKE_mesh_calc_poly_normal(mp, ml, mvert, no);
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}
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func(userData, orig, cent, no);
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}
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}
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else {
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for (int i = 0; i < mesh->totpoly; i++, mp++) {
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float cent[3];
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ml = &mesh->mloop[mp->loopstart];
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BKE_mesh_calc_poly_center(mp, ml, mvert, cent);
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if (flag & MESH_FOREACH_USE_NORMAL) {
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BKE_mesh_calc_poly_normal(mp, ml, mvert, no);
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}
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func(userData, i, cent, no);
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}
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}
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}
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/* Copied from cdDM_foreachMappedFaceCenter */
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void BKE_mesh_foreach_mapped_subdiv_face_center(
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Mesh *mesh,
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void (*func)(void *userData, int index, const float cent[3], const float no[3]),
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void *userData,
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MeshForeachFlag flag)
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{
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const MPoly *mp = mesh->mpoly;
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const MLoop *ml;
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const MVert *mv;
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float _no_buf[3];
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float *no = (flag & MESH_FOREACH_USE_NORMAL) ? _no_buf : NULL;
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const int *index = CustomData_get_layer(&mesh->pdata, CD_ORIGINDEX);
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if (index) {
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for (int i = 0; i < mesh->totpoly; i++, mp++) {
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const int orig = *index++;
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if (orig == ORIGINDEX_NONE) {
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continue;
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}
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ml = &mesh->mloop[mp->loopstart];
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for (int j = 0; j < mp->totloop; j++, ml++) {
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mv = &mesh->mvert[ml->v];
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if (mv->flag & ME_VERT_FACEDOT) {
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if (flag & MESH_FOREACH_USE_NORMAL) {
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normal_short_to_float_v3(no, mv->no);
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}
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func(userData, orig, mv->co, no);
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}
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}
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}
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}
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else {
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for (int i = 0; i < mesh->totpoly; i++, mp++) {
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ml = &mesh->mloop[mp->loopstart];
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for (int j = 0; j < mp->totloop; j++, ml++) {
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mv = &mesh->mvert[ml->v];
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if (mv->flag & ME_VERT_FACEDOT) {
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if (flag & MESH_FOREACH_USE_NORMAL) {
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normal_short_to_float_v3(no, mv->no);
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}
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func(userData, i, mv->co, no);
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}
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}
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}
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}
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}
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/* Helpers based on above foreach loopers> */
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typedef struct MappedVCosData {
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float (*vertexcos)[3];
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BLI_bitmap *vertex_visit;
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} MappedVCosData;
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static void get_vertexcos__mapFunc(void *user_data,
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int index,
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const float co[3],
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const float UNUSED(no_f[3]),
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const short UNUSED(no_s[3]))
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{
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MappedVCosData *mapped_vcos_data = (MappedVCosData *)user_data;
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if (BLI_BITMAP_TEST(mapped_vcos_data->vertex_visit, index) == 0) {
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/* We need coord from prototype vertex, not from copies,
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* we assume they stored in the beginning of vertex array stored in evaluated mesh
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* (mirror modifier for eg does this). */
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copy_v3_v3(mapped_vcos_data->vertexcos[index], co);
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BLI_BITMAP_ENABLE(mapped_vcos_data->vertex_visit, index);
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}
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}
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void BKE_mesh_foreach_mapped_vert_coords_get(Mesh *me_eval, float (*r_cos)[3], const int totcos)
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{
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MappedVCosData user_data;
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memset(r_cos, 0, sizeof(*r_cos) * totcos);
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user_data.vertexcos = r_cos;
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user_data.vertex_visit = BLI_BITMAP_NEW(totcos, __func__);
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BKE_mesh_foreach_mapped_vert(me_eval, get_vertexcos__mapFunc, &user_data, MESH_FOREACH_NOP);
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MEM_freeN(user_data.vertex_visit);
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}
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