158 lines
3.8 KiB
C
158 lines
3.8 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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* Manage edit mesh cache: #EditMeshData
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*/
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#include "MEM_guardedalloc.h"
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#include "BLI_math_vector.h"
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#include "DNA_mesh_types.h"
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#include "BKE_editmesh.h"
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#include "BKE_editmesh_cache.h" /* own include */
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/* -------------------------------------------------------------------- */
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/** \name Ensure Data (derived from coords)
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* \{ */
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void BKE_editmesh_cache_ensure_poly_normals(BMEditMesh *em, EditMeshData *emd)
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{
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if (!(emd->vertexCos && (emd->polyNos == NULL))) {
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return;
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}
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BMesh *bm = em->bm;
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const float(*vertexCos)[3];
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float(*polyNos)[3];
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BMFace *efa;
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BMIter fiter;
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int i;
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BM_mesh_elem_index_ensure(bm, BM_VERT);
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polyNos = MEM_mallocN(sizeof(*polyNos) * bm->totface, __func__);
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vertexCos = emd->vertexCos;
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BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) {
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BM_elem_index_set(efa, i); /* set_inline */
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BM_face_calc_normal_vcos(bm, efa, polyNos[i], vertexCos);
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}
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bm->elem_index_dirty &= ~BM_FACE;
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emd->polyNos = (const float(*)[3])polyNos;
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}
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void BKE_editmesh_cache_ensure_vert_normals(BMEditMesh *em, EditMeshData *emd)
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{
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if (!(emd->vertexCos && (emd->vertexNos == NULL))) {
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return;
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}
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BMesh *bm = em->bm;
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const float(*vertexCos)[3], (*polyNos)[3];
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float(*vertexNos)[3];
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/* calculate vertex normals from poly normals */
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BKE_editmesh_cache_ensure_poly_normals(em, emd);
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BM_mesh_elem_index_ensure(bm, BM_FACE);
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polyNos = emd->polyNos;
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vertexCos = emd->vertexCos;
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vertexNos = MEM_callocN(sizeof(*vertexNos) * bm->totvert, __func__);
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BM_verts_calc_normal_vcos(bm, polyNos, vertexCos, vertexNos);
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emd->vertexNos = (const float(*)[3])vertexNos;
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}
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void BKE_editmesh_cache_ensure_poly_centers(BMEditMesh *em, EditMeshData *emd)
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{
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if (emd->polyCos != NULL) {
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return;
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}
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BMesh *bm = em->bm;
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float(*polyCos)[3];
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BMFace *efa;
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BMIter fiter;
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int i;
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polyCos = MEM_mallocN(sizeof(*polyCos) * bm->totface, __func__);
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if (emd->vertexCos) {
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const float(*vertexCos)[3];
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vertexCos = emd->vertexCos;
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BM_mesh_elem_index_ensure(bm, BM_VERT);
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BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) {
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BM_face_calc_center_median_vcos(bm, efa, polyCos[i], vertexCos);
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}
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}
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else {
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BM_ITER_MESH_INDEX (efa, &fiter, bm, BM_FACES_OF_MESH, i) {
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BM_face_calc_center_median(efa, polyCos[i]);
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}
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}
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emd->polyCos = (const float(*)[3])polyCos;
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}
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/** \} */
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/* -------------------------------------------------------------------- */
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/** \name Calculate Min/Max
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* \{ */
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bool BKE_editmesh_cache_calc_minmax(struct BMEditMesh *em,
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struct EditMeshData *emd,
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float min[3],
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float max[3])
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{
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BMesh *bm = em->bm;
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BMVert *eve;
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BMIter iter;
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int i;
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if (bm->totvert) {
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if (emd->vertexCos) {
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BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
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minmax_v3v3_v3(min, max, emd->vertexCos[i]);
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}
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}
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else {
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BM_ITER_MESH (eve, &iter, bm, BM_VERTS_OF_MESH) {
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minmax_v3v3_v3(min, max, eve->co);
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}
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}
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return true;
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}
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zero_v3(min);
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zero_v3(max);
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return false;
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}
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/** \} */
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