diff options
Diffstat (limited to 'source/blender/blenkernel/intern/mesh_iterators.c')
| -rw-r--r-- | source/blender/blenkernel/intern/mesh_iterators.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/mesh_iterators.c b/source/blender/blenkernel/intern/mesh_iterators.c new file mode 100644 index 00000000000..48f6b1820f8 --- /dev/null +++ b/source/blender/blenkernel/intern/mesh_iterators.c @@ -0,0 +1,154 @@ +/* + * ***** 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); + } + +} |