archive/blender-archive
Archived
1
1
Fork 0
Code Pull Requests Packages Activity
This repository has been archived on 2023-10-09. You can view files and clone it, but cannot push or open issues or pull requests.
Files
974dc284761338da477fc1e4e901b6ad1b82805f
blender-archive/source/blender/bmesh/intern/bmesh_mesh_conv.c
Campbell Barton ffcf39e3b5 BMesh: reduce memory usage existing edit-mode 
- Don't duplicate the original vertices.
- Free old geometry before allocating the new geometry.
2019-11-28 18:14:08 +11:00

1148 lines
37 KiB
C
Raw Blame History

/*
* 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.
*/
/** \file
* \ingroup bmesh
*
* BM mesh conversion functions.
*
* \section bm_mesh_conv_shapekey Converting Shape Keys
*
* When converting to/from a Mesh/BMesh you can optionally pass a shape key to edit.
* This has the effect of editing the shape key-block rather then the original mesh vertex coords
* (although additional geometry is still allowed and uses fallback locations on converting).
*
* While this works for any mesh/bmesh this is made use of by entering and exiting edit-mode.
*
* There are comments in code but this should help explain the general
* intention as to how this works converting from/to bmesh.
* \subsection user_pov User Perspective
*
* - Editmode operations when a shape key-block is active edits only that key-block.
* - The first Basis key-block always matches the Mesh verts.
* - Changing vertex locations of _any_ Basis
* will apply offsets to those shape keys using this as their Basis.
*
* \subsection enter_editmode Entering EditMode - #BM_mesh_bm_from_me
*
* - The active key-block is used for BMesh vertex locations on entering edit-mode.
* So obviously the meshes vertex locations remain unchanged and the shape key
* its self is not being edited directly.
* Simply the #BMVert.co is a initialized from active shape key (when its set).
* - All key-blocks are added as CustomData layers (read code for details).
*
* \subsection exit_editmode Exiting EditMode - #BM_mesh_bm_to_me
*
* This is where the most confusing code is! Won't attempt to document the details here,
* for that read the code.
* But basics are as follows.
*
* - Vertex locations (possibly modified from initial active key-block)
* are copied directly into #MVert.co
* (special confusing note that these may be restored later, when editing the 'Basis', read on).
* - if the 'Key' is relative, and the active key-block is the basis for ANY other key-blocks -
* get an array of offsets between the new vertex locations and the original shape key
* (before entering edit-mode), these offsets get applied later on to inactive key-blocks
* using the active one (which we are editing) as their Basis.
*
* Copying the locations back to the shape keys is quite confusing...
* One main area of confusion is that when editing a 'Basis' key-block 'me->key->refkey'
* The coords are written into the mesh, from the users perspective the Basis coords are written
* into the mesh when exiting edit-mode.
*
* When _not_ editing the 'Basis', the original vertex locations
* (stored in the mesh and unchanged during edit-mode), are copied back into the mesh.
*
* This has the effect from the users POV of leaving the mesh un-touched,
* and only editing the active shape key-block.
*/
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "DNA_modifier_types.h"
#include "DNA_key_types.h"
#include "MEM_guardedalloc.h"
#include "BLI_listbase.h"
#include "BLI_alloca.h"
#include "BLI_math_vector.h"
#include "BKE_mesh.h"
#include "BKE_mesh_runtime.h"
#include "BKE_customdata.h"
#include "BKE_multires.h"
#include "BKE_main.h"
#include "BKE_key.h"
#include "bmesh.h"
#include "intern/bmesh_private.h" /* For element checking. */
void BM_mesh_cd_flag_ensure(BMesh *bm, Mesh *mesh, const char cd_flag)
{
const char cd_flag_all = BM_mesh_cd_flag_from_bmesh(bm) | cd_flag;
BM_mesh_cd_flag_apply(bm, cd_flag_all);
if (mesh) {
mesh->cd_flag = cd_flag_all;
}
}
void BM_mesh_cd_flag_apply(BMesh *bm, const char cd_flag)
{
/* CustomData_bmesh_init_pool() must run first */
BLI_assert(bm->vdata.totlayer == 0 || bm->vdata.pool != NULL);
BLI_assert(bm->edata.totlayer == 0 || bm->edata.pool != NULL);
BLI_assert(bm->pdata.totlayer == 0 || bm->pdata.pool != NULL);
if (cd_flag & ME_CDFLAG_VERT_BWEIGHT) {
if (!CustomData_has_layer(&bm->vdata, CD_BWEIGHT)) {
BM_data_layer_add(bm, &bm->vdata, CD_BWEIGHT);
}
}
else {
if (CustomData_has_layer(&bm->vdata, CD_BWEIGHT)) {
BM_data_layer_free(bm, &bm->vdata, CD_BWEIGHT);
}
}
if (cd_flag & ME_CDFLAG_EDGE_BWEIGHT) {
if (!CustomData_has_layer(&bm->edata, CD_BWEIGHT)) {
BM_data_layer_add(bm, &bm->edata, CD_BWEIGHT);
}
}
else {
if (CustomData_has_layer(&bm->edata, CD_BWEIGHT)) {
BM_data_layer_free(bm, &bm->edata, CD_BWEIGHT);
}
}
if (cd_flag & ME_CDFLAG_EDGE_CREASE) {
if (!CustomData_has_layer(&bm->edata, CD_CREASE)) {
BM_data_layer_add(bm, &bm->edata, CD_CREASE);
}
}
else {
if (CustomData_has_layer(&bm->edata, CD_CREASE)) {
BM_data_layer_free(bm, &bm->edata, CD_CREASE);
}
}
}
char BM_mesh_cd_flag_from_bmesh(BMesh *bm)
{
char cd_flag = 0;
if (CustomData_has_layer(&bm->vdata, CD_BWEIGHT)) {
cd_flag |= ME_CDFLAG_VERT_BWEIGHT;
}
if (CustomData_has_layer(&bm->edata, CD_BWEIGHT)) {
cd_flag |= ME_CDFLAG_EDGE_BWEIGHT;
}
if (CustomData_has_layer(&bm->edata, CD_CREASE)) {
cd_flag |= ME_CDFLAG_EDGE_CREASE;
}
return cd_flag;
}
/* Static function for alloc (duplicate in modifiers_bmesh.c) */
static BMFace *bm_face_create_from_mpoly(
MPoly *mp, MLoop *ml, BMesh *bm, BMVert **vtable, BMEdge **etable)
{
BMVert **verts = BLI_array_alloca(verts, mp->totloop);
BMEdge **edges = BLI_array_alloca(edges, mp->totloop);
int j;
for (j = 0; j < mp->totloop; j++, ml++) {
verts[j] = vtable[ml->v];
edges[j] = etable[ml->e];
}
return BM_face_create(bm, verts, edges, mp->totloop, NULL, BM_CREATE_SKIP_CD);
}
/**
* \brief Mesh -> BMesh
* \param bm: The mesh to write into, while this is typically a newly created BMesh,
* merging into existing data is supported.
* Note the custom-data layout isn't used.
* If more comprehensive merging is needed we should move this into a separate function
* since this should be kept fast for edit-mode switching and storing undo steps.
*
* \warning This function doesn't calculate face normals.
*/
void BM_mesh_bm_from_me(BMesh *bm, const Mesh *me, const struct BMeshFromMeshParams *params)
{
const bool is_new = !(bm->totvert || (bm->vdata.totlayer || bm->edata.totlayer ||
bm->pdata.totlayer || bm->ldata.totlayer));
MVert *mvert;
MEdge *medge;
MLoop *mloop;
MPoly *mp;
KeyBlock *actkey, *block;
BMVert *v, **vtable = NULL;
BMEdge *e, **etable = NULL;
BMFace *f, **ftable = NULL;
float(*keyco)[3] = NULL;
int totloops, i;
CustomData_MeshMasks mask = CD_MASK_BMESH;
CustomData_MeshMasks_update(&mask, &params->cd_mask_extra);
if (!me || !me->totvert) {
if (me && is_new) { /* No verts? still copy custom-data layout. */
CustomData_copy(&me->vdata, &bm->vdata, mask.vmask, CD_ASSIGN, 0);
CustomData_copy(&me->edata, &bm->edata, mask.emask, CD_ASSIGN, 0);
CustomData_copy(&me->ldata, &bm->ldata, mask.lmask, CD_ASSIGN, 0);
CustomData_copy(&me->pdata, &bm->pdata, mask.pmask, CD_ASSIGN, 0);
CustomData_bmesh_init_pool(&bm->vdata, me->totvert, BM_VERT);
CustomData_bmesh_init_pool(&bm->edata, me->totedge, BM_EDGE);
CustomData_bmesh_init_pool(&bm->ldata, me->totloop, BM_LOOP);
CustomData_bmesh_init_pool(&bm->pdata, me->totpoly, BM_FACE);
}
return; /* Sanity check. */
}
if (is_new) {
CustomData_copy(&me->vdata, &bm->vdata, mask.vmask, CD_CALLOC, 0);
CustomData_copy(&me->edata, &bm->edata, mask.emask, CD_CALLOC, 0);
CustomData_copy(&me->ldata, &bm->ldata, mask.lmask, CD_CALLOC, 0);
CustomData_copy(&me->pdata, &bm->pdata, mask.pmask, CD_CALLOC, 0);
}
else {
CustomData_bmesh_merge(&me->vdata, &bm->vdata, mask.vmask, CD_CALLOC, bm, BM_VERT);
CustomData_bmesh_merge(&me->edata, &bm->edata, mask.emask, CD_CALLOC, bm, BM_EDGE);
CustomData_bmesh_merge(&me->ldata, &bm->ldata, mask.lmask, CD_CALLOC, bm, BM_LOOP);
CustomData_bmesh_merge(&me->pdata, &bm->pdata, mask.pmask, CD_CALLOC, bm, BM_FACE);
}
/* -------------------------------------------------------------------- */
/* Shape Key */
int tot_shape_keys = me->key ? BLI_listbase_count(&me->key->block) : 0;
if (is_new == false) {
tot_shape_keys = min_ii(tot_shape_keys, CustomData_number_of_layers(&bm->vdata, CD_SHAPEKEY));
}
const float(**shape_key_table)[3] = tot_shape_keys ?
BLI_array_alloca(shape_key_table, tot_shape_keys) :
NULL;
if ((params->active_shapekey != 0) && (me->key != NULL)) {
actkey = BLI_findlink(&me->key->block, params->active_shapekey - 1);
}
else {
actkey = NULL;
}
if (is_new) {
if (tot_shape_keys || params->add_key_index) {
CustomData_add_layer(&bm->vdata, CD_SHAPE_KEYINDEX, CD_ASSIGN, NULL, 0);
}
}
if (tot_shape_keys) {
if (is_new) {
/* Check if we need to generate unique ids for the shape-keys.
* This also exists in the file reading code, but is here for a sanity check. */
if (!me->key->uidgen) {
fprintf(stderr,
"%s had to generate shape key uid's in a situation we shouldn't need to! "
"(bmesh internal error)\n",
__func__);
me->key->uidgen = 1;
for (block = me->key->block.first; block; block = block->next) {
block->uid = me->key->uidgen++;
}
}
}
if (actkey && actkey->totelem == me->totvert) {
keyco = params->use_shapekey ? actkey->data : NULL;
if (is_new) {
bm->shapenr = params->active_shapekey;
}
}
for (i = 0, block = me->key->block.first; i < tot_shape_keys; block = block->next, i++) {
if (is_new) {
CustomData_add_layer_named(&bm->vdata, CD_SHAPEKEY, CD_ASSIGN, NULL, 0, block->name);
int j = CustomData_get_layer_index_n(&bm->vdata, CD_SHAPEKEY, i);
bm->vdata.layers[j].uid = block->uid;
}
shape_key_table[i] = (const float(*)[3])block->data;
}
}
if (is_new) {
CustomData_bmesh_init_pool(&bm->vdata, me->totvert, BM_VERT);
CustomData_bmesh_init_pool(&bm->edata, me->totedge, BM_EDGE);
CustomData_bmesh_init_pool(&bm->ldata, me->totloop, BM_LOOP);
CustomData_bmesh_init_pool(&bm->pdata, me->totpoly, BM_FACE);
BM_mesh_cd_flag_apply(bm, me->cd_flag);
}
const int cd_vert_bweight_offset = CustomData_get_offset(&bm->vdata, CD_BWEIGHT);
const int cd_edge_bweight_offset = CustomData_get_offset(&bm->edata, CD_BWEIGHT);
const int cd_edge_crease_offset = CustomData_get_offset(&bm->edata, CD_CREASE);
const int cd_shape_key_offset = me->key ? CustomData_get_offset(&bm->vdata, CD_SHAPEKEY) : -1;
const int cd_shape_keyindex_offset = is_new && (tot_shape_keys || params->add_key_index) ?
CustomData_get_offset(&bm->vdata, CD_SHAPE_KEYINDEX) :
-1;
vtable = MEM_mallocN(sizeof(BMVert **) * me->totvert, __func__);
for (i = 0, mvert = me->mvert; i < me->totvert; i++, mvert++) {
v = vtable[i] = BM_vert_create(bm, keyco ? keyco[i] : mvert->co, NULL, BM_CREATE_SKIP_CD);
BM_elem_index_set(v, i); /* set_ok */
/* Transfer flag. */
v->head.hflag = BM_vert_flag_from_mflag(mvert->flag & ~SELECT);
/* This is necessary for selection counts to work properly. */
if (mvert->flag & SELECT) {
BM_vert_select_set(bm, v, true);
}
normal_short_to_float_v3(v->no, mvert->no);
/* Copy Custom Data */
CustomData_to_bmesh_block(&me->vdata, &bm->vdata, i, &v->head.data, true);
if (cd_vert_bweight_offset != -1) {
BM_ELEM_CD_SET_FLOAT(v, cd_vert_bweight_offset, (float)mvert->bweight / 255.0f);
}
/* Set shape key original index. */
if (cd_shape_keyindex_offset != -1) {
BM_ELEM_CD_SET_INT(v, cd_shape_keyindex_offset, i);
}
/* Set shape-key data. */
if (tot_shape_keys) {
float(*co_dst)[3] = BM_ELEM_CD_GET_VOID_P(v, cd_shape_key_offset);
for (int j = 0; j < tot_shape_keys; j++, co_dst++) {
copy_v3_v3(*co_dst, shape_key_table[j][i]);
}
}
}
if (is_new) {
bm->elem_index_dirty &= ~BM_VERT; /* Added in order, clear dirty flag. */
}
etable = MEM_mallocN(sizeof(BMEdge **) * me->totedge, __func__);
medge = me->medge;
for (i = 0; i < me->totedge; i++, medge++) {
e = etable[i] = BM_edge_create(
bm, vtable[medge->v1], vtable[medge->v2], NULL, BM_CREATE_SKIP_CD);
BM_elem_index_set(e, i); /* set_ok */
/* Transfer flags. */
e->head.hflag = BM_edge_flag_from_mflag(medge->flag & ~SELECT);
/* This is necessary for selection counts to work properly. */
if (medge->flag & SELECT) {
BM_edge_select_set(bm, e, true);
}
/* Copy Custom Data */
CustomData_to_bmesh_block(&me->edata, &bm->edata, i, &e->head.data, true);
if (cd_edge_bweight_offset != -1) {
BM_ELEM_CD_SET_FLOAT(e, cd_edge_bweight_offset, (float)medge->bweight / 255.0f);
}
if (cd_edge_crease_offset != -1) {
BM_ELEM_CD_SET_FLOAT(e, cd_edge_crease_offset, (float)medge->crease / 255.0f);
}
}
if (is_new) {
bm->elem_index_dirty &= ~BM_EDGE; /* Added in order, clear dirty flag. */
}
/* Only needed for selection. */
if (me->mselect && me->totselect != 0) {
ftable = MEM_mallocN(sizeof(BMFace **) * me->totpoly, __func__);
}
mloop = me->mloop;
mp = me->mpoly;
for (i = 0, totloops = 0; i < me->totpoly; i++, mp++) {
BMLoop *l_iter;
BMLoop *l_first;
f = bm_face_create_from_mpoly(mp, mloop + mp->loopstart, bm, vtable, etable);
if (ftable != NULL) {
ftable[i] = f;
}
if (UNLIKELY(f == NULL)) {
printf(
"%s: Warning! Bad face in mesh"
" \"%s\" at index %d!, skipping\n",
__func__,
me->id.name + 2,
i);
continue;
}
/* Don't use 'i' since we may have skipped the face. */
BM_elem_index_set(f, bm->totface - 1); /* set_ok */
/* Transfer flag. */
f->head.hflag = BM_face_flag_from_mflag(mp->flag & ~ME_FACE_SEL);
/* This is necessary for selection counts to work properly. */
if (mp->flag & ME_FACE_SEL) {
BM_face_select_set(bm, f, true);
}
f->mat_nr = mp->mat_nr;
if (i == me->act_face) {
bm->act_face = f;
}
int j = mp->loopstart;
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
do {
/* Don't use 'j' since we may have skipped some faces, hence some loops. */
BM_elem_index_set(l_iter, totloops++); /* set_ok */
/* Save index of corresponding #MLoop. */
CustomData_to_bmesh_block(&me->ldata, &bm->ldata, j++, &l_iter->head.data, true);
} while ((l_iter = l_iter->next) != l_first);
/* Copy Custom Data */
CustomData_to_bmesh_block(&me->pdata, &bm->pdata, i, &f->head.data, true);
if (params->calc_face_normal) {
BM_face_normal_update(f);
}
}
if (is_new) {
bm->elem_index_dirty &= ~(BM_FACE | BM_LOOP); /* Added in order, clear dirty flag. */
}
/* -------------------------------------------------------------------- */
/* MSelect clears the array elements (avoid adding multiple times).
*
* Take care to keep this last and not use (v/e/ftable) after this.
*/
if (me->mselect && me->totselect != 0) {
MSelect *msel;
for (i = 0, msel = me->mselect; i < me->totselect; i++, msel++) {
BMElem **ele_p;
switch (msel->type) {
case ME_VSEL:
ele_p = (BMElem **)&vtable[msel->index];
break;
case ME_ESEL:
ele_p = (BMElem **)&etable[msel->index];
break;
case ME_FSEL:
ele_p = (BMElem **)&ftable[msel->index];
break;
default:
continue;
}
if (*ele_p != NULL) {
BM_select_history_store_notest(bm, *ele_p);
*ele_p = NULL;
}
}
}
else {
BM_select_history_clear(bm);
}
MEM_freeN(vtable);
MEM_freeN(etable);
if (ftable) {
MEM_freeN(ftable);
}
}
/**
* \brief BMesh -> Mesh
*/
static BMVert **bm_to_mesh_vertex_map(BMesh *bm, int ototvert)
{
const int cd_shape_keyindex_offset = CustomData_get_offset(&bm->vdata, CD_SHAPE_KEYINDEX);
BMVert **vertMap = NULL;
BMVert *eve;
int i = 0;
BMIter iter;
/* Caller needs to ensure this. */
BLI_assert(ototvert > 0);
vertMap = MEM_callocN(sizeof(*vertMap) * ototvert, "vertMap");
if (cd_shape_keyindex_offset != -1) {
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
const int keyi = BM_ELEM_CD_GET_INT(eve, cd_shape_keyindex_offset);
if ((keyi != ORIGINDEX_NONE) && (keyi < ototvert) &&
/* Not fool-proof, but chances are if we have many verts with the same index,
* we will want to use the first one,
* since the second is more likely to be a duplicate. */
(vertMap[keyi] == NULL)) {
vertMap[keyi] = eve;
}
}
}
else {
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
if (i < ototvert) {
vertMap[i] = eve;
}
else {
break;
}
}
}
return vertMap;
}
/**
* Returns custom-data shapekey index from a keyblock or -1
* \note could split this out into a more generic function.
*/
static int bm_to_mesh_shape_layer_index_from_kb(BMesh *bm, KeyBlock *currkey)
{
int i;
int j = 0;
for (i = 0; i < bm->vdata.totlayer; i++) {
if (bm->vdata.layers[i].type == CD_SHAPEKEY) {
if (currkey->uid == bm->vdata.layers[i].uid) {
return j;
}
j++;
}
}
return -1;
}
BLI_INLINE void bmesh_quick_edgedraw_flag(MEdge *med, BMEdge *e)
{
/* This is a cheap way to set the edge draw, its not precise and will
* pick the first 2 faces an edge uses.
* The dot comparison is a little arbitrary, but set so that a 5 subd
* IcoSphere won't vanish but subd 6 will (as with pre-bmesh Blender). */
if (/* (med->flag & ME_EDGEDRAW) && */ /* Assume to be true. */
(e->l && (e->l != e->l->radial_next)) &&
(dot_v3v3(e->l->f->no, e->l->radial_next->f->no) > 0.9995f)) {
med->flag &= ~ME_EDGEDRAW;
}
else {
med->flag |= ME_EDGEDRAW;
}
}
/**
*
* \param bmain: May be NULL in case \a calc_object_remap parameter option is not set.
*/
void BM_mesh_bm_to_me(Main *bmain, BMesh *bm, Mesh *me, const struct BMeshToMeshParams *params)
{
MEdge *med;
BMVert *v, *eve;
BMEdge *e;
BMFace *f;
BMIter iter;
int i, j;
const int cd_vert_bweight_offset = CustomData_get_offset(&bm->vdata, CD_BWEIGHT);
const int cd_edge_bweight_offset = CustomData_get_offset(&bm->edata, CD_BWEIGHT);
const int cd_edge_crease_offset = CustomData_get_offset(&bm->edata, CD_CREASE);
const int cd_shape_keyindex_offset = CustomData_get_offset(&bm->vdata, CD_SHAPE_KEYINDEX);
MVert *oldverts = NULL;
const int ototvert = me->totvert;
if (me->key && (cd_shape_keyindex_offset != -1)) {
/* Keep the old verts in case we are working on* a key, which is done at the end. */
/* Use the array in-place instead of duplicating the array. */
#if 0
oldverts = MEM_dupallocN(me->mvert);
#else
oldverts = me->mvert;
me->mvert = NULL;
CustomData_update_typemap(&me->vdata);
CustomData_set_layer(&me->vdata, CD_MVERT, NULL);
#endif
}
/* Free custom data. */
CustomData_free(&me->vdata, me->totvert);
CustomData_free(&me->edata, me->totedge);
CustomData_free(&me->fdata, me->totface);
CustomData_free(&me->ldata, me->totloop);
CustomData_free(&me->pdata, me->totpoly);
/* Add new custom data. */
me->totvert = bm->totvert;
me->totedge = bm->totedge;
me->totloop = bm->totloop;
me->totpoly = bm->totface;
/* Will be overwritten with a valid value if 'dotess' is set, otherwise we
* end up with 'me->totface' and me->mface == NULL which can crash T28625. */
me->totface = 0;
me->act_face = -1;
{
CustomData_MeshMasks mask = CD_MASK_MESH;
CustomData_MeshMasks_update(&mask, &params->cd_mask_extra);
CustomData_copy(&bm->vdata, &me->vdata, mask.vmask, CD_CALLOC, me->totvert);
CustomData_copy(&bm->edata, &me->edata, mask.emask, CD_CALLOC, me->totedge);
CustomData_copy(&bm->ldata, &me->ldata, mask.lmask, CD_CALLOC, me->totloop);
CustomData_copy(&bm->pdata, &me->pdata, mask.pmask, CD_CALLOC, me->totpoly);
}
MVert *mvert = bm->totvert ? MEM_callocN(sizeof(MVert) * bm->totvert, "bm_to_me.vert") : NULL;
MEdge *medge = bm->totedge ? MEM_callocN(sizeof(MEdge) * bm->totedge, "bm_to_me.edge") : NULL;
MLoop *mloop = bm->totloop ? MEM_callocN(sizeof(MLoop) * bm->totloop, "bm_to_me.loop") : NULL;
MPoly *mpoly = bm->totface ? MEM_callocN(sizeof(MPoly) * bm->totface, "bm_to_me.poly") : NULL;
CustomData_add_layer(&me->vdata, CD_MVERT, CD_ASSIGN, mvert, me->totvert);
CustomData_add_layer(&me->edata, CD_MEDGE, CD_ASSIGN, medge, me->totedge);
CustomData_add_layer(&me->ldata, CD_MLOOP, CD_ASSIGN, mloop, me->totloop);
CustomData_add_layer(&me->pdata, CD_MPOLY, CD_ASSIGN, mpoly, me->totpoly);
me->cd_flag = BM_mesh_cd_flag_from_bmesh(bm);
/* This is called again, 'dotess' arg is used there. */
BKE_mesh_update_customdata_pointers(me, 0);
i = 0;
BM_ITER_MESH (v, &iter, bm, BM_VERTS_OF_MESH) {
copy_v3_v3(mvert->co, v->co);
normal_float_to_short_v3(mvert->no, v->no);
mvert->flag = BM_vert_flag_to_mflag(v);
BM_elem_index_set(v, i); /* set_inline */
/* Copy over custom-data. */
CustomData_from_bmesh_block(&bm->vdata, &me->vdata, v->head.data, i);
if (cd_vert_bweight_offset != -1) {
mvert->bweight = BM_ELEM_CD_GET_FLOAT_AS_UCHAR(v, cd_vert_bweight_offset);
}
i++;
mvert++;
BM_CHECK_ELEMENT(v);
}
bm->elem_index_dirty &= ~BM_VERT;
med = medge;
i = 0;
BM_ITER_MESH (e, &iter, bm, BM_EDGES_OF_MESH) {
med->v1 = BM_elem_index_get(e->v1);
med->v2 = BM_elem_index_get(e->v2);
med->flag = BM_edge_flag_to_mflag(e);
BM_elem_index_set(e, i); /* set_inline */
/* Copy over custom-data. */
CustomData_from_bmesh_block(&bm->edata, &me->edata, e->head.data, i);
bmesh_quick_edgedraw_flag(med, e);
if (cd_edge_crease_offset != -1) {
med->crease = BM_ELEM_CD_GET_FLOAT_AS_UCHAR(e, cd_edge_crease_offset);
}
if (cd_edge_bweight_offset != -1) {
med->bweight = BM_ELEM_CD_GET_FLOAT_AS_UCHAR(e, cd_edge_bweight_offset);
}
i++;
med++;
BM_CHECK_ELEMENT(e);
}
bm->elem_index_dirty &= ~BM_EDGE;
i = 0;
j = 0;
BM_ITER_MESH (f, &iter, bm, BM_FACES_OF_MESH) {
BMLoop *l_iter, *l_first;
mpoly->loopstart = j;
mpoly->totloop = f->len;
mpoly->mat_nr = f->mat_nr;
mpoly->flag = BM_face_flag_to_mflag(f);
l_iter = l_first = BM_FACE_FIRST_LOOP(f);
do {
mloop->e = BM_elem_index_get(l_iter->e);
mloop->v = BM_elem_index_get(l_iter->v);
/* Copy over custom-data. */
CustomData_from_bmesh_block(&bm->ldata, &me->ldata, l_iter->head.data, j);
j++;
mloop++;
BM_CHECK_ELEMENT(l_iter);
BM_CHECK_ELEMENT(l_iter->e);
BM_CHECK_ELEMENT(l_iter->v);
} while ((l_iter = l_iter->next) != l_first);
if (f == bm->act_face) {
me->act_face = i;
}
/* Copy over custom-data. */
CustomData_from_bmesh_block(&bm->pdata, &me->pdata, f->head.data, i);
i++;
mpoly++;
BM_CHECK_ELEMENT(f);
}
/* Patch hook indices and vertex parents. */
if (params->calc_object_remap && (ototvert > 0)) {
BLI_assert(bmain != NULL);
Object *ob;
ModifierData *md;
BMVert **vertMap = NULL;
for (ob = bmain->objects.first; ob; ob = ob->id.next) {
if ((ob->parent) && (ob->parent->data == me) && ELEM(ob->partype, PARVERT1, PARVERT3)) {
if (vertMap == NULL) {
vertMap = bm_to_mesh_vertex_map(bm, ototvert);
}
if (ob->par1 < ototvert) {
eve = vertMap[ob->par1];
if (eve) {
ob->par1 = BM_elem_index_get(eve);
}
}
if (ob->par2 < ototvert) {
eve = vertMap[ob->par2];
if (eve) {
ob->par2 = BM_elem_index_get(eve);
}
}
if (ob->par3 < ototvert) {
eve = vertMap[ob->par3];
if (eve) {
ob->par3 = BM_elem_index_get(eve);
}
}
}
if (ob->data == me) {
for (md = ob->modifiers.first; md; md = md->next) {
if (md->type == eModifierType_Hook) {
HookModifierData *hmd = (HookModifierData *)md;
if (vertMap == NULL) {
vertMap = bm_to_mesh_vertex_map(bm, ototvert);
}
for (i = j = 0; i < hmd->totindex; i++) {
if (hmd->indexar[i] < ototvert) {
eve = vertMap[hmd->indexar[i]];
if (eve) {
hmd->indexar[j++] = BM_elem_index_get(eve);
}
}
else {
j++;
}
}
hmd->totindex = j;
}
}
}
}
if (vertMap) {
MEM_freeN(vertMap);
}
}
BKE_mesh_update_customdata_pointers(me, false);
{
BMEditSelection *selected;
me->totselect = BLI_listbase_count(&(bm->selected));
MEM_SAFE_FREE(me->mselect);
if (me->totselect != 0) {
me->mselect = MEM_mallocN(sizeof(MSelect) * me->totselect, "Mesh selection history");
}
for (i = 0, selected = bm->selected.first; selected; i++, selected = selected->next) {
if (selected->htype == BM_VERT) {
me->mselect[i].type = ME_VSEL;
}
else if (selected->htype == BM_EDGE) {
me->mselect[i].type = ME_ESEL;
}
else if (selected->htype == BM_FACE) {
me->mselect[i].type = ME_FSEL;
}
me->mselect[i].index = BM_elem_index_get(selected->ele);
}
}
/* See comment below, this logic is in twice. */
if (me->key) {
KeyBlock *currkey;
KeyBlock *actkey = BLI_findlink(&me->key->block, bm->shapenr - 1);
float(*ofs)[3] = NULL;
/* Go through and find any shape-key custom-data layers
* that might not have corresponding KeyBlocks, and add them if necessary. */
j = 0;
for (i = 0; i < bm->vdata.totlayer; i++) {
if (bm->vdata.layers[i].type != CD_SHAPEKEY) {
continue;
}
for (currkey = me->key->block.first; currkey; currkey = currkey->next) {
if (currkey->uid == bm->vdata.layers[i].uid) {
break;
}
}
if (!currkey) {
currkey = BKE_keyblock_add(me->key, bm->vdata.layers[i].name);
currkey->uid = bm->vdata.layers[i].uid;
}
j++;
}
/* Editing the base key should update others. */
if (/* Only need offsets for relative shape keys. */
(me->key->type == KEY_RELATIVE) &&
/* Unlikely, but the active key may not be valid if the
* BMesh and the mesh are out of sync. */
(actkey != NULL) &&
/* Not used here, but 'oldverts' is used later for applying 'ofs'. */
(oldverts != NULL) &&
/* Needed for referencing oldverts. */
(cd_shape_keyindex_offset != -1)) {
const bool act_is_basis = BKE_keyblock_is_basis(me->key, bm->shapenr - 1);
/* Active key is a base. */
if (act_is_basis) {
const float(*fp)[3] = actkey->data;
ofs = MEM_callocN(sizeof(float) * 3 * bm->totvert, "currkey->data");
mvert = me->mvert;
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
const int keyi = BM_ELEM_CD_GET_INT(eve, cd_shape_keyindex_offset);
/* Could use 'eve->co' or 'mvert->co', they're the same at this point. */
if (keyi != ORIGINDEX_NONE && keyi < actkey->totelem) {
sub_v3_v3v3(ofs[i], mvert->co, fp[keyi]);
}
else {
/* If there are new vertices in the mesh, we can't propagate the offset
* because it will only work for the existing vertices and not the new
* ones, creating a mess when doing e.g. subdivide + translate. */
MEM_freeN(ofs);
ofs = NULL;
break;
}
mvert++;
}
}
}
for (currkey = me->key->block.first; currkey; currkey = currkey->next) {
const bool apply_offset = (ofs && (currkey != actkey) &&
(bm->shapenr - 1 == currkey->relative));
int cd_shape_offset;
int keyi;
const float(*ofs_pt)[3] = ofs;
float *newkey, (*oldkey)[3], *fp;
j = bm_to_mesh_shape_layer_index_from_kb(bm, currkey);
cd_shape_offset = CustomData_get_n_offset(&bm->vdata, CD_SHAPEKEY, j);
fp = newkey = MEM_callocN(me->key->elemsize * bm->totvert, "currkey->data");
oldkey = currkey->data;
mvert = me->mvert;
BM_ITER_MESH (eve, &iter, bm, BM_VERTS_OF_MESH) {
if (currkey == actkey) {
copy_v3_v3(fp, eve->co);
if (actkey != me->key->refkey) { /* Important see bug T30771. */
if (cd_shape_keyindex_offset != -1) {
if (oldverts) {
keyi = BM_ELEM_CD_GET_INT(eve, cd_shape_keyindex_offset);
if (keyi != ORIGINDEX_NONE && keyi < currkey->totelem) { /* Valid old vertex. */
copy_v3_v3(mvert->co, oldverts[keyi].co);
}
}
}
}
}
else if (j != -1) {
/* In most cases this runs. */
copy_v3_v3(fp, BM_ELEM_CD_GET_VOID_P(eve, cd_shape_offset));
}
else if ((oldkey != NULL) && (cd_shape_keyindex_offset != -1) &&
((keyi = BM_ELEM_CD_GET_INT(eve, cd_shape_keyindex_offset)) != ORIGINDEX_NONE) &&
(keyi < currkey->totelem)) {
/* Old method of reconstructing keys via vertice's original key indices,
* currently used if the new method above fails
* (which is theoretically possible in certain cases of undo). */
copy_v3_v3(fp, oldkey[keyi]);
}
else {
/* Fail! fill in with dummy value. */
copy_v3_v3(fp, mvert->co);
}
/* Propagate edited basis offsets to other shapes. */
if (apply_offset) {
add_v3_v3(fp, *ofs_pt++);
/* Apply back new coordinates of offsetted shape-keys into BMesh.
* Otherwise, in case we call again BM_mesh_bm_to_me on same BMesh,
* we'll apply diff from previous call to BM_mesh_bm_to_me,
* to shape-key values from *original creation of the BMesh*. See T50524. */
copy_v3_v3(BM_ELEM_CD_GET_VOID_P(eve, cd_shape_offset), fp);
}
fp += 3;
mvert++;
}
currkey->totelem = bm->totvert;
if (currkey->data) {
MEM_freeN(currkey->data);
}
currkey->data = newkey;
}
if (ofs) {
MEM_freeN(ofs);
}
}
/* Run this even when shape keys aren't used since it may be used for hooks or vertex parents. */
if (params->update_shapekey_indices) {
/* We have written a new shape key, if this mesh is _not_ going to be freed,
* update the shape key indices to match the newly updated. */
if (cd_shape_keyindex_offset != -1) {
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
BM_ELEM_CD_SET_INT(eve, cd_shape_keyindex_offset, i);
}
}
}
if (oldverts != NULL) {
MEM_freeN(oldverts);
}
/* Topology could be changed, ensure mdisps are ok. */
multires_topology_changed(me);
/* To be removed as soon as COW is enabled by default.. */
BKE_mesh_runtime_clear_geometry(me);
}
/**
* A version of #BM_mesh_bm_to_me intended for getting the mesh
* to pass to the modifier stack for evaluation,
* instead of mode switching (where we make sure all data is kept
* and do expensive lookups to maintain shape keys).
*
* Key differences:
*
* - Don't support merging with existing mesh.
* - Ignore shape-keys.
* - Ignore vertex-parents.
* - Ignore selection history.
* - Uses simpler method to calculate #ME_EDGEDRAW
* - Uses #CD_MASK_DERIVEDMESH instead of #CD_MASK_MESH.
*
* \note Was `cddm_from_bmesh_ex` in 2.7x, removed `MFace` support.
*/
void BM_mesh_bm_to_me_for_eval(BMesh *bm, Mesh *me, const CustomData_MeshMasks *cd_mask_extra)
{
/* Must be an empty mesh. */
BLI_assert(me->totvert == 0);
BLI_assert(cd_mask_extra == NULL || (cd_mask_extra->vmask & CD_MASK_SHAPEKEY) == 0);
me->totvert = bm->totvert;
me->totedge = bm->totedge;
me->totface = 0;
me->totloop = bm->totloop;
me->totpoly = bm->totface;
CustomData_add_layer(&me->vdata, CD_ORIGINDEX, CD_CALLOC, NULL, bm->totvert);
CustomData_add_layer(&me->edata, CD_ORIGINDEX, CD_CALLOC, NULL, bm->totedge);
CustomData_add_layer(&me->pdata, CD_ORIGINDEX, CD_CALLOC, NULL, bm->totface);
CustomData_add_layer(&me->vdata, CD_MVERT, CD_CALLOC, NULL, bm->totvert);
CustomData_add_layer(&me->edata, CD_MEDGE, CD_CALLOC, NULL, bm->totedge);
CustomData_add_layer(&me->ldata, CD_MLOOP, CD_CALLOC, NULL, bm->totloop);
CustomData_add_layer(&me->pdata, CD_MPOLY, CD_CALLOC, NULL, bm->totface);
/* Don't process shape-keys, we only feed them through the modifier stack as needed,
* e.g. for applying modifiers or the like. */
CustomData_MeshMasks mask = CD_MASK_DERIVEDMESH;
if (cd_mask_extra != NULL) {
CustomData_MeshMasks_update(&mask, cd_mask_extra);
}
mask.vmask &= ~CD_MASK_SHAPEKEY;
CustomData_merge(&bm->vdata, &me->vdata, mask.vmask, CD_CALLOC, me->totvert);
CustomData_merge(&bm->edata, &me->edata, mask.emask, CD_CALLOC, me->totedge);
CustomData_merge(&bm->ldata, &me->ldata, mask.lmask, CD_CALLOC, me->totloop);
CustomData_merge(&bm->pdata, &me->pdata, mask.pmask, CD_CALLOC, me->totpoly);
BKE_mesh_update_customdata_pointers(me, false);
BMIter iter;
BMVert *eve;
BMEdge *eed;
BMFace *efa;
MVert *mvert = me->mvert;
MEdge *medge = me->medge;
MLoop *mloop = me->mloop;
MPoly *mpoly = me->mpoly;
int *index, add_orig;
unsigned int i, j;
const int cd_vert_bweight_offset = CustomData_get_offset(&bm->vdata, CD_BWEIGHT);
const int cd_edge_bweight_offset = CustomData_get_offset(&bm->edata, CD_BWEIGHT);
const int cd_edge_crease_offset = CustomData_get_offset(&bm->edata, CD_CREASE);
me->runtime.deformed_only = true;
/* Don't add origindex layer if one already exists. */
add_orig = !CustomData_has_layer(&bm->pdata, CD_ORIGINDEX);
index = CustomData_get_layer(&me->vdata, CD_ORIGINDEX);
BM_ITER_MESH_INDEX (eve, &iter, bm, BM_VERTS_OF_MESH, i) {
MVert *mv = &mvert[i];
copy_v3_v3(mv->co, eve->co);
BM_elem_index_set(eve, i); /* set_inline */
normal_float_to_short_v3(mv->no, eve->no);
mv->flag = BM_vert_flag_to_mflag(eve);
if (cd_vert_bweight_offset != -1) {
mv->bweight = BM_ELEM_CD_GET_FLOAT_AS_UCHAR(eve, cd_vert_bweight_offset);
}
if (add_orig) {
*index++ = i;
}
CustomData_from_bmesh_block(&bm->vdata, &me->vdata, eve->head.data, i);
}
bm->elem_index_dirty &= ~BM_VERT;
index = CustomData_get_layer(&me->edata, CD_ORIGINDEX);
BM_ITER_MESH_INDEX (eed, &iter, bm, BM_EDGES_OF_MESH, i) {
MEdge *med = &medge[i];
BM_elem_index_set(eed, i); /* set_inline */
med->v1 = BM_elem_index_get(eed->v1);
med->v2 = BM_elem_index_get(eed->v2);
med->flag = BM_edge_flag_to_mflag(eed);
/* Handle this differently to editmode switching,
* only enable draw for single user edges rather then calculating angle. */
if ((med->flag & ME_EDGEDRAW) == 0) {
if (eed->l && eed->l == eed->l->radial_next) {
med->flag |= ME_EDGEDRAW;
}
}
if (cd_edge_crease_offset != -1) {
med->crease = BM_ELEM_CD_GET_FLOAT_AS_UCHAR(eed, cd_edge_crease_offset);
}
if (cd_edge_bweight_offset != -1) {
med->bweight = BM_ELEM_CD_GET_FLOAT_AS_UCHAR(eed, cd_edge_bweight_offset);
}
CustomData_from_bmesh_block(&bm->edata, &me->edata, eed->head.data, i);
if (add_orig) {
*index++ = i;
}
}
bm->elem_index_dirty &= ~BM_EDGE;
index = CustomData_get_layer(&me->pdata, CD_ORIGINDEX);
j = 0;
BM_ITER_MESH_INDEX (efa, &iter, bm, BM_FACES_OF_MESH, i) {
BMLoop *l_iter;
BMLoop *l_first;
MPoly *mp = &mpoly[i];
BM_elem_index_set(efa, i); /* set_inline */
mp->totloop = efa->len;
mp->flag = BM_face_flag_to_mflag(efa);
mp->loopstart = j;
mp->mat_nr = efa->mat_nr;
l_iter = l_first = BM_FACE_FIRST_LOOP(efa);
do {
mloop->v = BM_elem_index_get(l_iter->v);
mloop->e = BM_elem_index_get(l_iter->e);
CustomData_from_bmesh_block(&bm->ldata, &me->ldata, l_iter->head.data, j);
BM_elem_index_set(l_iter, j); /* set_inline */
j++;
mloop++;
} while ((l_iter = l_iter->next) != l_first);
CustomData_from_bmesh_block(&bm->pdata, &me->pdata, efa->head.data, i);
if (add_orig) {
*index++ = i;
}
}
bm->elem_index_dirty &= ~(BM_FACE | BM_LOOP);
me->cd_flag = BM_mesh_cd_flag_from_bmesh(bm);
}
View Git Blame Copy Permalink