diff options
author | Campbell Barton <ideasman42@gmail.com> | 2018-10-08 03:35:01 +0300 |
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committer | Campbell Barton <ideasman42@gmail.com> | 2018-10-08 04:04:23 +0300 |
commit | df82d35cebb32469695e806c49689b4f22949a8f (patch) | |
tree | 42e53f7abf27e75ad2930ba2d0437d3057038600 /source/blender/blenkernel/intern/editmesh_cache.c | |
parent | 04064fb186ae1089a2bf3006f120e68f789b5242 (diff) |
Cleanup: extract cache calculation from derived-mesh
Diffstat (limited to 'source/blender/blenkernel/intern/editmesh_cache.c')
-rw-r--r-- | source/blender/blenkernel/intern/editmesh_cache.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/source/blender/blenkernel/intern/editmesh_cache.c b/source/blender/blenkernel/intern/editmesh_cache.c new file mode 100644 index 00000000000..f0af0ede9b1 --- /dev/null +++ b/source/blender/blenkernel/intern/editmesh_cache.c @@ -0,0 +1,120 @@ +/* + * ***** 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. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file blender/blenkernel/intern/editmesh_cache.c + * \ingroup bke + * + * Manage edit mesh cache: #EditMeshData + */ + +#include "MEM_guardedalloc.h" + +#include "DNA_mesh_types.h" + +#include "BLI_math.h" + +#include "BKE_editmesh.h" +#include "BKE_editmesh_cache.h" /* own include */ + +void BKE_editmesh_cache_ensure_poly_normals(BMEditMesh *em, EditMeshData *emd) +{ + if (!(emd->vertexCos && (emd->polyNos == NULL))) { + return; + } + + BMesh *bm = em->bm; + const float (*vertexCos)[3]; + float (*polyNos)[3]; + + BMFace *efa; + BMIter fiter; + int i; + + BM_mesh_elem_index_ensure(bm, BM_VERT); + + polyNos = MEM_mallocN(sizeof(*polyNos) * bm->totface, __func__); + + vertexCos = emd->vertexCos; + + BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) { + BM_elem_index_set(efa, i); /* set_inline */ + BM_face_calc_normal_vcos(bm, efa, polyNos[i], vertexCos); + } + bm->elem_index_dirty &= ~BM_FACE; + + emd->polyNos = (const float (*)[3])polyNos; +} + +void BKE_editmesh_cache_ensure_vert_normals(BMEditMesh *em, EditMeshData *emd) +{ + if (!(emd->vertexCos && (emd->vertexNos == NULL))) { + return; + } + + BMesh *bm = em->bm; + const float (*vertexCos)[3], (*polyNos)[3]; + float (*vertexNos)[3]; + + /* calculate vertex normals from poly normals */ + BKE_editmesh_cache_ensure_poly_normals(em, emd); + + BM_mesh_elem_index_ensure(bm, BM_FACE); + + polyNos = emd->polyNos; + vertexCos = emd->vertexCos; + vertexNos = MEM_callocN(sizeof(*vertexNos) * bm->totvert, __func__); + + BM_verts_calc_normal_vcos(bm, polyNos, vertexCos, vertexNos); + + emd->vertexNos = (const float (*)[3])vertexNos; +} + +void BKE_editmesh_cache_ensure_poly_centers(BMEditMesh *em, EditMeshData *emd) +{ + if (emd->polyCos != NULL) { + return; + } + BMesh *bm = em->bm; + float (*polyCos)[3]; + + BMFace *efa; + BMIter fiter; + int i; + + polyCos = MEM_mallocN(sizeof(*polyCos) * bm->totface, __func__); + + if (emd->vertexCos) { + const float (*vertexCos)[3]; + vertexCos = emd->vertexCos; + + BM_mesh_elem_index_ensure(bm, BM_VERT); + + BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) { + BM_face_calc_center_mean_vcos(bm, efa, polyCos[i], vertexCos); + } + } + else { + BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) { + BM_face_calc_center_mean(efa, polyCos[i]); + } + } + + emd->polyCos = (const float (*)[3])polyCos; +} |