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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): Geoffrey Bantle.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/bmesh/intern/bmesh_mesh.c
* \ingroup bmesh
*
* BM mesh level functions.
*/
#include "MEM_guardedalloc.h"
#include "DNA_listBase.h"
#include "DNA_object_types.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BLI_utildefines.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_editmesh.h"
#include "BKE_multires.h"
#include "intern/bmesh_private.h"
/* used as an extern, defined in bmesh.h */
const BMAllocTemplate bm_mesh_allocsize_default = {512, 1024, 2048, 512};
const BMAllocTemplate bm_mesh_chunksize_default = {512, 1024, 2048, 512};
static void bm_mempool_init(BMesh *bm, const BMAllocTemplate *allocsize)
{
bm->vpool = BLI_mempool_create(sizeof(BMVert), allocsize->totvert,
bm_mesh_chunksize_default.totvert, BLI_MEMPOOL_ALLOW_ITER);
bm->epool = BLI_mempool_create(sizeof(BMEdge), allocsize->totedge,
bm_mesh_chunksize_default.totedge, BLI_MEMPOOL_ALLOW_ITER);
bm->lpool = BLI_mempool_create(sizeof(BMLoop), allocsize->totloop,
bm_mesh_chunksize_default.totloop, 0);
bm->fpool = BLI_mempool_create(sizeof(BMFace), allocsize->totface,
bm_mesh_chunksize_default.totface, BLI_MEMPOOL_ALLOW_ITER);
#ifdef USE_BMESH_HOLES
bm->looplistpool = BLI_mempool_create(sizeof(BMLoopList), 512, 512, 0);
#endif
}
void BM_mesh_elem_toolflags_ensure(BMesh *bm)
{
if (bm->vtoolflagpool && bm->etoolflagpool && bm->ftoolflagpool) {
return;
}
bm->vtoolflagpool = BLI_mempool_create(sizeof(BMFlagLayer), max_ii(512, bm->totvert), 512, 0);
bm->etoolflagpool = BLI_mempool_create(sizeof(BMFlagLayer), max_ii(512, bm->totedge), 512, 0);
bm->ftoolflagpool = BLI_mempool_create(sizeof(BMFlagLayer), max_ii(512, bm->totface), 512, 0);
#pragma omp parallel sections if (bm->totvert + bm->totedge + bm->totface >= BM_OMP_LIMIT)
{
#pragma omp section
{
BLI_mempool *toolflagpool = bm->vtoolflagpool;
BMIter iter;
BMElemF *ele;
BM_ITER_MESH (ele, &iter, bm, BM_VERTS_OF_MESH) {
ele->oflags = BLI_mempool_calloc(toolflagpool);
}
}
#pragma omp section
{
BLI_mempool *toolflagpool = bm->etoolflagpool;
BMIter iter;
BMElemF *ele;
BM_ITER_MESH (ele, &iter, bm, BM_EDGES_OF_MESH) {
ele->oflags = BLI_mempool_calloc(toolflagpool);
}
}
#pragma omp section
{
BLI_mempool *toolflagpool = bm->ftoolflagpool;
BMIter iter;
BMElemF *ele;
BM_ITER_MESH (ele, &iter, bm, BM_FACES_OF_MESH) {
ele->oflags = BLI_mempool_calloc(toolflagpool);
}
}
}
bm->totflags = 1;
}
void BM_mesh_elem_toolflags_clear(BMesh *bm)
{
if (bm->vtoolflagpool) {
BLI_mempool_destroy(bm->vtoolflagpool);
bm->vtoolflagpool = NULL;
}
if (bm->etoolflagpool) {
BLI_mempool_destroy(bm->etoolflagpool);
bm->etoolflagpool = NULL;
}
if (bm->ftoolflagpool) {
BLI_mempool_destroy(bm->ftoolflagpool);
bm->ftoolflagpool = NULL;
}
}
/**
* \brief BMesh Make Mesh
*
* Allocates a new BMesh structure.
*
* \return The New bmesh
*
* \note ob is needed by multires
*/
BMesh *BM_mesh_create(const BMAllocTemplate *allocsize)
{
/* allocate the structure */
BMesh *bm = MEM_callocN(sizeof(BMesh), __func__);
/* allocate the memory pools for the mesh elements */
bm_mempool_init(bm, allocsize);
/* allocate one flag pool that we don't get rid of. */
bm->stackdepth = 1;
bm->totflags = 0;
CustomData_reset(&bm->vdata);
CustomData_reset(&bm->edata);
CustomData_reset(&bm->ldata);
CustomData_reset(&bm->pdata);
return bm;
}
/**
* \brief BMesh Free Mesh Data
*
* Frees a BMesh structure.
*
* \note frees mesh, but not actual BMesh struct
*/
void BM_mesh_data_free(BMesh *bm)
{
BMVert *v;
BMEdge *e;
BMLoop *l;
BMFace *f;
BMIter iter;
BMIter itersub;
const bool is_ldata_free = CustomData_bmesh_has_free(&bm->ldata);
const bool is_pdata_free = CustomData_bmesh_has_free(&bm->pdata);
/* Check if we have to call free, if not we can avoid a lot of looping */
if (CustomData_bmesh_has_free(&(bm->vdata))) {
BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) {
CustomData_bmesh_free_block(&(bm->vdata), &(v->head.data));
}
}
if (CustomData_bmesh_has_free(&(bm->edata))) {
BM_ITER_MESH (e, &iter, bm, BM_EDGES_OF_MESH) {
CustomData_bmesh_free_block(&(bm->edata), &(e->head.data));
}
}
if (is_ldata_free || is_pdata_free) {
BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) {
if (is_pdata_free)
CustomData_bmesh_free_block(&(bm->pdata), &(f->head.data));
if (is_ldata_free) {
BM_ITER_ELEM (l, &itersub, f, BM_LOOPS_OF_FACE) {
CustomData_bmesh_free_block(&(bm->ldata), &(l->head.data));
}
}
}
}
/* Free custom data pools, This should probably go in CustomData_free? */
if (bm->vdata.totlayer) BLI_mempool_destroy(bm->vdata.pool);
if (bm->edata.totlayer) BLI_mempool_destroy(bm->edata.pool);
if (bm->ldata.totlayer) BLI_mempool_destroy(bm->ldata.pool);
if (bm->pdata.totlayer) BLI_mempool_destroy(bm->pdata.pool);
/* free custom data */
CustomData_free(&bm->vdata, 0);
CustomData_free(&bm->edata, 0);
CustomData_free(&bm->ldata, 0);
CustomData_free(&bm->pdata, 0);
/* destroy element pools */
BLI_mempool_destroy(bm->vpool);
BLI_mempool_destroy(bm->epool);
BLI_mempool_destroy(bm->lpool);
BLI_mempool_destroy(bm->fpool);
if (bm->vtable) MEM_freeN(bm->vtable);
if (bm->etable) MEM_freeN(bm->etable);
if (bm->ftable) MEM_freeN(bm->ftable);
/* destroy flag pool */
BM_mesh_elem_toolflags_clear(bm);
#ifdef USE_BMESH_HOLES
BLI_mempool_destroy(bm->looplistpool);
#endif
BLI_freelistN(&bm->selected);
BMO_error_clear(bm);
}
/**
* \brief BMesh Clear Mesh
*
* Clear all data in bm
*/
void BM_mesh_clear(BMesh *bm)
{
/* free old mesh */
BM_mesh_data_free(bm);
memset(bm, 0, sizeof(BMesh));
/* allocate the memory pools for the mesh elements */
bm_mempool_init(bm, &bm_mesh_allocsize_default);
bm->stackdepth = 1;
bm->totflags = 0;
CustomData_reset(&bm->vdata);
CustomData_reset(&bm->edata);
CustomData_reset(&bm->ldata);
CustomData_reset(&bm->pdata);
}
/**
* \brief BMesh Free Mesh
*
* Frees a BMesh data and its structure.
*/
void BM_mesh_free(BMesh *bm)
{
BM_mesh_data_free(bm);
if (bm->py_handle) {
/* keep this out of 'BM_mesh_data_free' because we want python
* to be able to clear the mesh and maintain access. */
bpy_bm_generic_invalidate(bm->py_handle);
bm->py_handle = NULL;
}
MEM_freeN(bm);
}
/**
* \brief BMesh Compute Normals
*
* Updates the normals of a mesh.
*/
void BM_mesh_normals_update(BMesh *bm)
{
float (*edgevec)[3] = MEM_mallocN(sizeof(*edgevec) * bm->totedge, __func__);
#pragma omp parallel sections if (bm->totvert + bm->totedge + bm->totface >= BM_OMP_LIMIT)
{
#pragma omp section
{
/* calculate all face normals */
BMIter fiter;
BMFace *f;
BM_ITER_MESH (f, &fiter, bm, BM_FACES_OF_MESH) {
BM_face_normal_update(f);
}
}
#pragma omp section
{
/* Zero out vertex normals */
BMIter viter;
BMVert *v;
BM_ITER_MESH (v, &viter, bm, BM_VERTS_OF_MESH) {
zero_v3(v->no);
}
}
#pragma omp section
{
/* compute normalized direction vectors for each edge. directions will be
* used below for calculating the weights of the face normals on the vertex
* normals */
BMIter eiter;
BMEdge *e;
int index;
BM_ITER_MESH_INDEX (e, &eiter, bm, BM_EDGES_OF_MESH, index) {
BM_elem_index_set(e, index); /* set_inline */
if (e->l) {
sub_v3_v3v3(edgevec[index], e->v2->co, e->v1->co);
normalize_v3(edgevec[index]);
}
else {
/* the edge vector will not be needed when the edge has no radial */
}
}
bm->elem_index_dirty &= ~BM_EDGE;
}
}
/* end omp */
/* add weighted face normals to vertices */
{
BMIter fiter;
BMFace *f;
BM_ITER_MESH (f, &fiter, bm, BM_FACES_OF_MESH) {
BMLoop *l_first, *l_iter;
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
do {
const float *e1diff, *e2diff;
float dotprod;
float fac;
/* calculate the dot product of the two edges that
* meet at the loop's vertex */
e1diff = edgevec[BM_elem_index_get(l_iter->prev->e)];
e2diff = edgevec[BM_elem_index_get(l_iter->e)];
dotprod = dot_v3v3(e1diff, e2diff);
/* edge vectors are calculated from e->v1 to e->v2, so
* adjust the dot product if one but not both loops
* actually runs from from e->v2 to e->v1 */
if ((l_iter->prev->e->v1 == l_iter->prev->v) ^ (l_iter->e->v1 == l_iter->v)) {
dotprod = -dotprod;
}
fac = saacos(-dotprod);
/* accumulate weighted face normal into the vertex's normal */
madd_v3_v3fl(l_iter->v->no, f->no, fac);
} while ((l_iter = l_iter->next) != l_first);
}
MEM_freeN(edgevec);
}
/* normalize the accumulated vertex normals */
{
BMIter viter;
BMVert *v;
BM_ITER_MESH (v, &viter, bm, BM_VERTS_OF_MESH) {
if (UNLIKELY(normalize_v3(v->no) == 0.0f)) {
normalize_v3_v3(v->no, v->co);
}
}
}
}
static void UNUSED_FUNCTION(bm_mdisps_space_set)(Object *ob, BMesh *bm, int from, int to)
{
/* switch multires data out of tangent space */
if (CustomData_has_layer(&bm->ldata, CD_MDISPS)) {
BMEditMesh *em = BKE_editmesh_create(bm, false);
DerivedMesh *dm = CDDM_from_editbmesh(em, true, false);
MDisps *mdisps;
BMFace *f;
BMIter iter;
// int i = 0; // UNUSED
multires_set_space(dm, ob, from, to);
mdisps = CustomData_get_layer(&dm->loopData, CD_MDISPS);
BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) {
BMLoop *l;
BMIter liter;
BM_ITER_ELEM (l, &liter, f, BM_LOOPS_OF_FACE) {
MDisps *lmd = CustomData_bmesh_get(&bm->ldata, l->head.data, CD_MDISPS);
if (!lmd->disps) {
printf("%s: warning - 'lmd->disps' == NULL\n", __func__);
}
if (lmd->disps && lmd->totdisp == mdisps->totdisp) {
memcpy(lmd->disps, mdisps->disps, sizeof(float) * 3 * lmd->totdisp);
}
else if (mdisps->disps) {
if (lmd->disps)
MEM_freeN(lmd->disps);
lmd->disps = MEM_dupallocN(mdisps->disps);
lmd->totdisp = mdisps->totdisp;
lmd->level = mdisps->level;
}
mdisps++;
// i += 1;
}
}
dm->needsFree = 1;
dm->release(dm);
/* setting this to NULL prevents BKE_editmesh_free from freeing it */
em->bm = NULL;
BKE_editmesh_free(em);
MEM_freeN(em);
}
}
/**
* \brief BMesh Begin Edit
*
* Functions for setting up a mesh for editing and cleaning up after
* the editing operations are done. These are called by the tools/operator
* API for each time a tool is executed.
*/
void bmesh_edit_begin(BMesh *UNUSED(bm), BMOpTypeFlag UNUSED(type_flag))
{
/* Most operators seem to be using BMO_OPTYPE_FLAG_UNTAN_MULTIRES to change the MDisps to
* absolute space during mesh edits. With this enabled, changes to the topology
* (loop cuts, edge subdivides, etc) are not reflected in the higher levels of
* the mesh at all, which doesn't seem right. Turning off completely for now,
* until this is shown to be better for certain types of mesh edits. */
#ifdef BMOP_UNTAN_MULTIRES_ENABLED
/* switch multires data out of tangent space */
if ((type_flag & BMO_OPTYPE_FLAG_UNTAN_MULTIRES) && CustomData_has_layer(&bm->ldata, CD_MDISPS)) {
bmesh_mdisps_space_set(bm, MULTIRES_SPACE_TANGENT, MULTIRES_SPACE_ABSOLUTE);
/* ensure correct normals, if possible */
bmesh_rationalize_normals(bm, 0);
BM_mesh_normals_update(bm);
}
#endif
}
/**
* \brief BMesh End Edit
*/
void bmesh_edit_end(BMesh *bm, BMOpTypeFlag type_flag)
{
/* BMO_OPTYPE_FLAG_UNTAN_MULTIRES disabled for now, see comment above in bmesh_edit_begin. */
#ifdef BMOP_UNTAN_MULTIRES_ENABLED
/* switch multires data into tangent space */
if ((flag & BMO_OPTYPE_FLAG_UNTAN_MULTIRES) && CustomData_has_layer(&bm->ldata, CD_MDISPS)) {
/* set normals to their previous winding */
bmesh_rationalize_normals(bm, 1);
bmesh_mdisps_space_set(bm, MULTIRES_SPACE_ABSOLUTE, MULTIRES_SPACE_TANGENT);
}
else if (flag & BMO_OP_FLAG_RATIONALIZE_NORMALS) {
bmesh_rationalize_normals(bm, 1);
}
#endif
/* compute normals, clear temp flags and flush selections */
if (type_flag & BMO_OPTYPE_FLAG_NORMALS_CALC) {
BM_mesh_normals_update(bm);
}
if (type_flag & BMO_OPTYPE_FLAG_SELECT_FLUSH) {
BM_mesh_select_mode_flush(bm);
}
}
void BM_mesh_elem_index_ensure(BMesh *bm, const char hflag)
{
#ifdef DEBUG
BM_ELEM_INDEX_VALIDATE(bm, "Should Never Fail!", __func__);
#endif
#pragma omp parallel sections if (bm->totvert + bm->totedge + bm->totface >= BM_OMP_LIMIT)
{
#pragma omp section
{
if (hflag & BM_VERT) {
if (bm->elem_index_dirty & BM_VERT) {
BMIter iter;
BMElem *ele;
int index;
BM_ITER_MESH_INDEX (ele, &iter, bm, BM_VERTS_OF_MESH, index) {
BM_elem_index_set(ele, index); /* set_ok */
}
BLI_assert(index == bm->totvert);
}
else {
// printf("%s: skipping vert index calc!\n", __func__);
}
}
}
#pragma omp section
{
if (hflag & BM_EDGE) {
if (bm->elem_index_dirty & BM_EDGE) {
BMIter iter;
BMElem *ele;
int index;
BM_ITER_MESH_INDEX (ele, &iter, bm, BM_EDGES_OF_MESH, index) {
BM_elem_index_set(ele, index); /* set_ok */
}
BLI_assert(index == bm->totedge);
}
else {
// printf("%s: skipping edge index calc!\n", __func__);
}
}
}
#pragma omp section
{
if (hflag & BM_FACE) {
if (bm->elem_index_dirty & BM_FACE) {
BMIter iter;
BMElem *ele;
int index;
BM_ITER_MESH_INDEX (ele, &iter, bm, BM_FACES_OF_MESH, index) {
BM_elem_index_set(ele, index); /* set_ok */
}
BLI_assert(index == bm->totface);
}
else {
// printf("%s: skipping face index calc!\n", __func__);
}
}
}
}
bm->elem_index_dirty &= ~hflag;
}
/**
* Array checking/setting macros
*
* Currently vert/edge/loop/face index data is being abused, in a few areas of the code.
*
* To avoid correcting them afterwards, set 'bm->elem_index_dirty' however its possible
* this flag is set incorrectly which could crash blender.
*
* These functions ensure its correct and are called more often in debug mode.
*/
void BM_mesh_elem_index_validate(BMesh *bm, const char *location, const char *func,
const char *msg_a, const char *msg_b)
{
const char iter_types[3] = {BM_VERTS_OF_MESH,
BM_EDGES_OF_MESH,
BM_FACES_OF_MESH};
const char flag_types[3] = {BM_VERT, BM_EDGE, BM_FACE};
const char *type_names[3] = {"vert", "edge", "face"};
BMIter iter;
BMElem *ele;
int i;
bool is_any_error = 0;
for (i = 0; i < 3; i++) {
const bool is_dirty = (flag_types[i] & bm->elem_index_dirty) != 0;
int index = 0;
bool is_error = false;
int err_val = 0;
int err_idx = 0;
BM_ITER_MESH (ele, &iter, bm, iter_types[i]) {
if (!is_dirty) {
if (BM_elem_index_get(ele) != index) {
err_val = BM_elem_index_get(ele);
err_idx = index;
is_error = true;
}
}
BM_elem_index_set(ele, index); /* set_ok */
index++;
}
if ((is_error == true) && (is_dirty == false)) {
is_any_error = true;
fprintf(stderr,
"Invalid Index: at %s, %s, %s[%d] invalid index %d, '%s', '%s'\n",
location, func, type_names[i], err_idx, err_val, msg_a, msg_b);
}
else if ((is_error == false) && (is_dirty == true)) {
#if 0 /* mostly annoying */
/* dirty may have been incorrectly set */
fprintf(stderr,
"Invalid Dirty: at %s, %s (%s), dirty flag was set but all index values are correct, '%s', '%s'\n",
location, func, type_names[i], msg_a, msg_b);
#endif
}
}
#if 0 /* mostly annoying, even in debug mode */
#ifdef DEBUG
if (is_any_error == 0) {
fprintf(stderr,
"Valid Index Success: at %s, %s, '%s', '%s'\n",
location, func, msg_a, msg_b);
}
#endif
#endif
(void) is_any_error; /* shut up the compiler */
}
/* debug check only - no need to optimize */
#ifndef NDEBUG
bool BM_mesh_elem_table_check(BMesh *bm)
{
BMIter iter;
BMElem *ele;
int i;
if (bm->vtable && ((bm->elem_table_dirty & BM_VERT) == 0)) {
BM_ITER_MESH_INDEX (ele, &iter, bm, BM_VERTS_OF_MESH, i) {
if (ele != (BMElem *)bm->vtable[i]) {
return false;
}
}
}
if (bm->etable && ((bm->elem_table_dirty & BM_EDGE) == 0)) {
BM_ITER_MESH_INDEX (ele, &iter, bm, BM_EDGES_OF_MESH, i) {
if (ele != (BMElem *)bm->etable[i]) {
return false;
}
}
}
if (bm->ftable && ((bm->elem_table_dirty & BM_FACE) == 0)) {
BM_ITER_MESH_INDEX (ele, &iter, bm, BM_FACES_OF_MESH, i) {
if (ele != (BMElem *)bm->ftable[i]) {
return false;
}
}
}
return true;
}
#endif
void BM_mesh_elem_table_ensure(BMesh *bm, const char htype)
{
/* assume if the array is non-null then its valid and no need to recalc */
const char htype_needed = (((bm->vtable && ((bm->elem_table_dirty & BM_VERT) == 0)) ? 0 : BM_VERT) |
((bm->etable && ((bm->elem_table_dirty & BM_EDGE) == 0)) ? 0 : BM_EDGE) |
((bm->ftable && ((bm->elem_table_dirty & BM_FACE) == 0)) ? 0 : BM_FACE)) & htype;
BLI_assert((htype & ~BM_ALL_NOLOOP) == 0);
/* in debug mode double check we didn't need to recalculate */
BLI_assert(BM_mesh_elem_table_check(bm) == true);
if (htype_needed & BM_VERT) {
if (bm->vtable && bm->totvert <= bm->vtable_tot && bm->totvert * 2 >= bm->vtable_tot) {
/* pass (re-use the array) */
}
else {
if (bm->vtable)
MEM_freeN(bm->vtable);
bm->vtable = MEM_mallocN(sizeof(void **) * bm->totvert, "bm->vtable");
bm->vtable_tot = bm->totvert;
}
bm->elem_table_dirty &= ~BM_VERT;
}
if (htype_needed & BM_EDGE) {
if (bm->etable && bm->totedge <= bm->etable_tot && bm->totedge * 2 >= bm->etable_tot) {
/* pass (re-use the array) */
}
else {
if (bm->etable)
MEM_freeN(bm->etable);
bm->etable = MEM_mallocN(sizeof(void **) * bm->totedge, "bm->etable");
bm->etable_tot = bm->totedge;
}
bm->elem_table_dirty &= ~BM_EDGE;
}
if (htype_needed & BM_FACE) {
if (bm->ftable && bm->totface <= bm->ftable_tot && bm->totface * 2 >= bm->ftable_tot) {
/* pass (re-use the array) */
}
else {
if (bm->ftable)
MEM_freeN(bm->ftable);
bm->ftable = MEM_mallocN(sizeof(void **) * bm->totface, "bm->ftable");
bm->ftable_tot = bm->totface;
}
bm->elem_table_dirty &= ~BM_FACE;
}
#pragma omp parallel sections if (bm->totvert + bm->totedge + bm->totface >= BM_OMP_LIMIT)
{
#pragma omp section
{
if (htype_needed & BM_VERT) {
BM_iter_as_array(bm, BM_VERTS_OF_MESH, NULL, (void **)bm->vtable, bm->totvert);
}
}
#pragma omp section
{
if (htype_needed & BM_EDGE) {
BM_iter_as_array(bm, BM_EDGES_OF_MESH, NULL, (void **)bm->etable, bm->totedge);
}
}
#pragma omp section
{
if (htype_needed & BM_FACE) {
BM_iter_as_array(bm, BM_FACES_OF_MESH, NULL, (void **)bm->ftable, bm->totface);
}
}
}
}
/* use BM_mesh_elem_table_ensure where possible to avoid full rebuild */
void BM_mesh_elem_table_init(BMesh *bm, const char htype)
{
BLI_assert((htype & ~BM_ALL_NOLOOP) == 0);
/* force recalc */
BM_mesh_elem_table_free(bm, BM_ALL_NOLOOP);
BM_mesh_elem_table_ensure(bm, htype);
}
void BM_mesh_elem_table_free(BMesh *bm, const char htype)
{
if (htype & BM_VERT) {
MEM_SAFE_FREE(bm->vtable);
}
if (htype & BM_EDGE) {
MEM_SAFE_FREE(bm->etable);
}
if (htype & BM_FACE) {
MEM_SAFE_FREE(bm->ftable);
}
}
BMVert *BM_vert_at_index(BMesh *bm, int index)
{
BLI_assert((index >= 0) && (index < bm->totvert));
BLI_assert((bm->elem_table_dirty & BM_VERT) == 0);
return bm->vtable[index];
}
BMEdge *BM_edge_at_index(BMesh *bm, int index)
{
BLI_assert((index >= 0) && (index < bm->totedge));
BLI_assert((bm->elem_table_dirty & BM_EDGE) == 0);
return bm->etable[index];
}
BMFace *BM_face_at_index(BMesh *bm, int index)
{
BLI_assert((index >= 0) && (index < bm->totface));
BLI_assert((bm->elem_table_dirty & BM_FACE) == 0);
return bm->ftable[index];
}
BMVert *BM_vert_at_index_find(BMesh *bm, const int index)
{
return BLI_mempool_findelem(bm->vpool, index);
}
BMEdge *BM_edge_at_index_find(BMesh *bm, const int index)
{
return BLI_mempool_findelem(bm->epool, index);
}
BMFace *BM_face_at_index_find(BMesh *bm, const int index)
{
return BLI_mempool_findelem(bm->fpool, index);
}
/**
* Return the amount of element of type 'type' in a given bmesh.
*/
int BM_mesh_elem_count(BMesh *bm, const char htype)
{
BLI_assert((htype & ~BM_ALL_NOLOOP) == 0);
switch (htype) {
case BM_VERT: return bm->totvert;
case BM_EDGE: return bm->totedge;
case BM_FACE: return bm->totface;
default:
{
BLI_assert(0);
return 0;
}
}
}
/**
* Remaps the vertices, edges and/or faces of the bmesh as indicated by vert/edge/face_idx arrays
* (xxx_idx[org_index] = new_index).
*
* A NULL array means no changes.
*
* Note: - Does not mess with indices, just sets elem_index_dirty flag.
* - For verts/edges/faces only (as loops must remain "ordered" and "aligned"
* on a per-face basis...).
*
* WARNING: Be careful if you keep pointers to affected BM elements, or arrays, when using this func!
*/
void BM_mesh_remap(BMesh *bm, int *vert_idx, int *edge_idx, int *face_idx)
{
/* Mapping old to new pointers. */
GHash *vptr_map = NULL, *eptr_map = NULL, *fptr_map = NULL;
BMIter iter, iterl;
BMVert *ve;
BMEdge *ed;
BMFace *fa;
BMLoop *lo;
if (!(vert_idx || edge_idx || face_idx))
return;
/* Remap Verts */
if (vert_idx) {
BMVert **verts_pool, *verts_copy, **vep;
int i, totvert = bm->totvert;
int *new_idx = NULL;
/* Init the old-to-new vert pointers mapping */
vptr_map = BLI_ghash_ptr_new_ex("BM_mesh_remap vert pointers mapping", bm->totvert);
/* Make a copy of all vertices. */
verts_pool = MEM_callocN(sizeof(BMVert *) * totvert, "BM_mesh_remap verts pool");
BM_iter_as_array(bm, BM_VERTS_OF_MESH, NULL, (void **)verts_pool, totvert);
verts_copy = MEM_mallocN(sizeof(BMVert) * totvert, "BM_mesh_remap verts copy");
for (i = totvert, ve = verts_copy + totvert - 1, vep = verts_pool + totvert - 1; i--; ve--, vep--) {
*ve = **vep;
/* printf("*vep: %p, verts_pool[%d]: %p\n", *vep, i, verts_pool[i]);*/
}
/* Copy back verts to their new place, and update old2new pointers mapping. */
new_idx = vert_idx + totvert - 1;
ve = verts_copy + totvert - 1;
vep = verts_pool + totvert - 1; /* old, org pointer */
for (i = totvert; i--; new_idx--, ve--, vep--) {
BMVert *new_vep = verts_pool[*new_idx];
*new_vep = *ve;
/* printf("mapping vert from %d to %d (%p/%p to %p)\n", i, *new_idx, *vep, verts_pool[i], new_vep);*/
BLI_ghash_insert(vptr_map, (void *)*vep, (void *)new_vep);
}
bm->elem_index_dirty |= BM_VERT;
MEM_freeN(verts_pool);
MEM_freeN(verts_copy);
}
/* Remap Edges */
if (edge_idx) {
BMEdge **edges_pool, *edges_copy, **edp;
int i, totedge = bm->totedge;
int *new_idx = NULL;
/* Init the old-to-new vert pointers mapping */
eptr_map = BLI_ghash_ptr_new_ex("BM_mesh_remap edge pointers mapping", bm->totedge);
/* Make a copy of all vertices. */
edges_pool = MEM_callocN(sizeof(BMEdge *) * totedge, "BM_mesh_remap edges pool");
BM_iter_as_array(bm, BM_EDGES_OF_MESH, NULL, (void **)edges_pool, totedge);
edges_copy = MEM_mallocN(sizeof(BMEdge) * totedge, "BM_mesh_remap edges copy");
for (i = totedge, ed = edges_copy + totedge - 1, edp = edges_pool + totedge - 1; i--; ed--, edp--) {
*ed = **edp;
}
/* Copy back verts to their new place, and update old2new pointers mapping. */
new_idx = edge_idx + totedge - 1;
ed = edges_copy + totedge - 1;
edp = edges_pool + totedge - 1; /* old, org pointer */
for (i = totedge; i--; new_idx--, ed--, edp--) {
BMEdge *new_edp = edges_pool[*new_idx];
*new_edp = *ed;
BLI_ghash_insert(eptr_map, (void *)*edp, (void *)new_edp);
/* printf("mapping edge from %d to %d (%p/%p to %p)\n", i, *new_idx, *edp, edges_pool[i], new_edp);*/
}
bm->elem_index_dirty |= BM_EDGE;
MEM_freeN(edges_pool);
MEM_freeN(edges_copy);
}
/* Remap Faces */
if (face_idx) {
BMFace **faces_pool, *faces_copy, **fap;
int i, totface = bm->totface;
int *new_idx = NULL;
/* Init the old-to-new vert pointers mapping */
fptr_map = BLI_ghash_ptr_new_ex("BM_mesh_remap face pointers mapping", bm->totface);
/* Make a copy of all vertices. */
faces_pool = MEM_callocN(sizeof(BMFace *) * totface, "BM_mesh_remap faces pool");
BM_iter_as_array(bm, BM_FACES_OF_MESH, NULL, (void **)faces_pool, totface);
faces_copy = MEM_mallocN(sizeof(BMFace) * totface, "BM_mesh_remap faces copy");
for (i = totface, fa = faces_copy + totface - 1, fap = faces_pool + totface - 1; i--; fa--, fap--) {
*fa = **fap;
}
/* Copy back verts to their new place, and update old2new pointers mapping. */
new_idx = face_idx + totface - 1;
fa = faces_copy + totface - 1;
fap = faces_pool + totface - 1; /* old, org pointer */
for (i = totface; i--; new_idx--, fa--, fap--) {
BMFace *new_fap = faces_pool[*new_idx];
*new_fap = *fa;
BLI_ghash_insert(fptr_map, (void *)*fap, (void *)new_fap);
}
bm->elem_index_dirty |= BM_FACE;
MEM_freeN(faces_pool);
MEM_freeN(faces_copy);
}
/* And now, fix all vertices/edges/faces/loops pointers! */
/* Verts' pointers, only edge pointers... */
if (eptr_map) {
BM_ITER_MESH (ve, &iter, bm, BM_VERTS_OF_MESH) {
/* printf("Vert e: %p -> %p\n", ve->e, BLI_ghash_lookup(eptr_map, (const void *)ve->e));*/
ve->e = BLI_ghash_lookup(eptr_map, (const void *)ve->e);
}
}
/* Edges' pointers, only vert pointers (as we don't mess with loops!), and - ack! - edge pointers,
* as we have to handle disklinks... */
if (vptr_map || eptr_map) {
BM_ITER_MESH (ed, &iter, bm, BM_EDGES_OF_MESH) {
if (vptr_map) {
/* printf("Edge v1: %p -> %p\n", ed->v1, BLI_ghash_lookup(vptr_map, (const void *)ed->v1));*/
/* printf("Edge v2: %p -> %p\n", ed->v2, BLI_ghash_lookup(vptr_map, (const void *)ed->v2));*/
ed->v1 = BLI_ghash_lookup(vptr_map, (const void *)ed->v1);
ed->v2 = BLI_ghash_lookup(vptr_map, (const void *)ed->v2);
}
if (eptr_map) {
/* printf("Edge v1_disk_link prev: %p -> %p\n", ed->v1_disk_link.prev,*/
/* BLI_ghash_lookup(eptr_map, (const void *)ed->v1_disk_link.prev));*/
/* printf("Edge v1_disk_link next: %p -> %p\n", ed->v1_disk_link.next,*/
/* BLI_ghash_lookup(eptr_map, (const void *)ed->v1_disk_link.next));*/
/* printf("Edge v2_disk_link prev: %p -> %p\n", ed->v2_disk_link.prev,*/
/* BLI_ghash_lookup(eptr_map, (const void *)ed->v2_disk_link.prev));*/
/* printf("Edge v2_disk_link next: %p -> %p\n", ed->v2_disk_link.next,*/
/* BLI_ghash_lookup(eptr_map, (const void *)ed->v2_disk_link.next));*/
ed->v1_disk_link.prev = BLI_ghash_lookup(eptr_map, (const void *)ed->v1_disk_link.prev);
ed->v1_disk_link.next = BLI_ghash_lookup(eptr_map, (const void *)ed->v1_disk_link.next);
ed->v2_disk_link.prev = BLI_ghash_lookup(eptr_map, (const void *)ed->v2_disk_link.prev);
ed->v2_disk_link.next = BLI_ghash_lookup(eptr_map, (const void *)ed->v2_disk_link.next);
}
}
}
/* Faces' pointers (loops, in fact), always needed... */
BM_ITER_MESH (fa, &iter, bm, BM_FACES_OF_MESH) {
BM_ITER_ELEM (lo, &iterl, fa, BM_LOOPS_OF_FACE) {
if (vptr_map) {
/* printf("Loop v: %p -> %p\n", lo->v, BLI_ghash_lookup(vptr_map, (const void *)lo->v));*/
lo->v = BLI_ghash_lookup(vptr_map, (const void *)lo->v);
}
if (eptr_map) {
/* printf("Loop e: %p -> %p\n", lo->e, BLI_ghash_lookup(eptr_map, (const void *)lo->e));*/
lo->e = BLI_ghash_lookup(eptr_map, (const void *)lo->e);
}
if (fptr_map) {
/* printf("Loop f: %p -> %p\n", lo->f, BLI_ghash_lookup(fptr_map, (const void *)lo->f));*/
lo->f = BLI_ghash_lookup(fptr_map, (const void *)lo->f);
}
}
}
if (vptr_map)
BLI_ghash_free(vptr_map, NULL, NULL);
if (eptr_map)
BLI_ghash_free(eptr_map, NULL, NULL);
if (fptr_map)
BLI_ghash_free(fptr_map, NULL, NULL);
}
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