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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.
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/blenkernel/intern/object_deform.c
* \ingroup bke
*/
#include <stdlib.h>
#include <string.h>
#include "MEM_guardedalloc.h"
#include "BLT_translation.h"
#include "BLI_utildefines.h"
#include "BLI_ghash.h"
#include "BLI_listbase.h"
#include "BLI_string_utils.h"
#include "DNA_armature_types.h"
#include "DNA_cloth_types.h"
#include "DNA_curve_types.h"
#include "DNA_lattice_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_mesh_types.h"
#include "DNA_modifier_types.h"
#include "DNA_object_types.h"
#include "DNA_object_force_types.h"
#include "DNA_particle_types.h"
#include "DNA_scene_types.h"
#include "BKE_action.h"
#include "BKE_deform.h"
#include "BKE_editmesh.h"
#include "BKE_object_deform.h" /* own include */
#include "BKE_object.h"
#include "BKE_mesh.h"
#include "BKE_modifier.h"
#include "BKE_gpencil.h"
/** \name Misc helpers
* \{ */
static Lattice *object_defgroup_lattice_get(ID *id)
{
Lattice *lt = (Lattice *)id;
BLI_assert(GS(id->name) == ID_LT);
return (lt->editlatt) ? lt->editlatt->latt : lt;
}
/**
* Update users of vgroups from this object, according to given map.
*
* Use it when you remove or reorder vgroups in the object.
*
* \param map an array mapping old indices to new indices.
*/
void BKE_object_defgroup_remap_update_users(Object *ob, int *map)
{
ModifierData *md;
ParticleSystem *psys;
int a;
/* these cases don't use names to refer to vertex groups, so when
* they get removed the numbers get out of sync, this corrects that */
if (ob->soft) {
ob->soft->vertgroup = map[ob->soft->vertgroup];
}
for (md = ob->modifiers.first; md; md = md->next) {
if (md->type == eModifierType_Explode) {
ExplodeModifierData *emd = (ExplodeModifierData *)md;
emd->vgroup = map[emd->vgroup];
}
else if (md->type == eModifierType_Cloth) {
ClothModifierData *clmd = (ClothModifierData *)md;
ClothSimSettings *clsim = clmd->sim_parms;
if (clsim) {
clsim->vgroup_mass = map[clsim->vgroup_mass];
clsim->vgroup_bend = map[clsim->vgroup_bend];
clsim->vgroup_struct = map[clsim->vgroup_struct];
}
}
}
for (psys = ob->particlesystem.first; psys; psys = psys->next) {
for (a = 0; a < PSYS_TOT_VG; a++) {
psys->vgroup[a] = map[psys->vgroup[a]];
}
}
}
/** \} */
/** \name Group creation
* \{ */
/**
* Add a vgroup of given name to object. *Does not* handle MDeformVert data at all!
*/
bDeformGroup *BKE_object_defgroup_add_name(Object *ob, const char *name)
{
bDeformGroup *defgroup;
if (!ob || !OB_TYPE_SUPPORT_VGROUP(ob->type))
return NULL;
defgroup = BKE_defgroup_new(ob, name);
ob->actdef = BLI_listbase_count(&ob->defbase);
return defgroup;
}
/**
* Add a vgroup of default name to object. *Does not* handle MDeformVert data at all!
*/
bDeformGroup *BKE_object_defgroup_add(Object *ob)
{
return BKE_object_defgroup_add_name(ob, DATA_("Group"));
}
/**
* Create MDeformVert data for given ID. Work in Object mode only.
*/
MDeformVert *BKE_object_defgroup_data_create(ID *id)
{
if (GS(id->name) == ID_ME) {
Mesh *me = (Mesh *)id;
me->dvert = CustomData_add_layer(&me->vdata, CD_MDEFORMVERT, CD_CALLOC, NULL, me->totvert);
return me->dvert;
}
else if (GS(id->name) == ID_LT) {
Lattice *lt = (Lattice *)id;
lt->dvert = MEM_callocN(sizeof(MDeformVert) * lt->pntsu * lt->pntsv * lt->pntsw, "lattice deformVert");
return lt->dvert;
}
return NULL;
}
/** \} */
/** \name Group clearing
* \{ */
/**
* Remove all verts (or only selected ones) from given vgroup. Work in Object and Edit modes.
*
* \param use_selection: Only operate on selection.
* \return True if any vertex was removed, false otherwise.
*/
bool BKE_object_defgroup_clear(Object *ob, bDeformGroup *dg, const bool use_selection)
{
MDeformVert *dv;
const int def_nr = BLI_findindex(&ob->defbase, dg);
bool changed = false;
if (ob->type == OB_MESH) {
Mesh *me = ob->data;
if (me->edit_btmesh) {
BMEditMesh *em = me->edit_btmesh;
const int cd_dvert_offset = CustomData_get_offset(&em->bm->vdata, CD_MDEFORMVERT);
if (cd_dvert_offset != -1) {
BMVert *eve;
BMIter iter;
BM_ITER_MESH (eve, &iter, em->bm, BM_VERTS_OF_MESH) {
dv = BM_ELEM_CD_GET_VOID_P(eve, cd_dvert_offset);
if (dv && dv->dw && (!use_selection || BM_elem_flag_test(eve, BM_ELEM_SELECT))) {
MDeformWeight *dw = defvert_find_index(dv, def_nr);
defvert_remove_group(dv, dw); /* dw can be NULL */
changed = true;
}
}
}
}
else {
if (me->dvert) {
MVert *mv;
int i;
mv = me->mvert;
dv = me->dvert;
for (i = 0; i < me->totvert; i++, mv++, dv++) {
if (dv->dw && (!use_selection || (mv->flag & SELECT))) {
MDeformWeight *dw = defvert_find_index(dv, def_nr);
defvert_remove_group(dv, dw); /* dw can be NULL */
changed = true;
}
}
}
}
}
else if (ob->type == OB_LATTICE) {
Lattice *lt = object_defgroup_lattice_get((ID *)(ob->data));
if (lt->dvert) {
BPoint *bp;
int i, tot = lt->pntsu * lt->pntsv * lt->pntsw;
for (i = 0, bp = lt->def; i < tot; i++, bp++) {
if (!use_selection || (bp->f1 & SELECT)) {
MDeformWeight *dw;
dv = <->dvert[i];
dw = defvert_find_index(dv, def_nr);
defvert_remove_group(dv, dw); /* dw can be NULL */
changed = true;
}
}
}
}
return changed;
}
/**
* Remove all verts (or only selected ones) from all vgroups. Work in Object and Edit modes.
*
* \param use_selection: Only operate on selection.
* \return True if any vertex was removed, false otherwise.
*/
bool BKE_object_defgroup_clear_all(Object *ob, const bool use_selection)
{
bDeformGroup *dg;
bool changed = false;
for (dg = ob->defbase.first; dg; dg = dg->next) {
if (BKE_object_defgroup_clear(ob, dg, use_selection)) {
changed = true;
}
}
return changed;
}
/** \} */
/** \name Group removal
* \{ */
static void object_defgroup_remove_update_users(Object *ob, const int idx)
{
int i, defbase_tot = BLI_listbase_count(&ob->defbase) + 1;
int *map = MEM_mallocN(sizeof(int) * defbase_tot, "vgroup del");
map[idx] = map[0] = 0;
for (i = 1; i < idx; i++) {
map[i] = i;
}
for (i = idx + 1; i < defbase_tot; i++) {
map[i] = i - 1;
}
BKE_object_defgroup_remap_update_users(ob, map);
MEM_freeN(map);
}
static void object_defgroup_remove_common(Object *ob, bDeformGroup *dg, const int def_nr)
{
object_defgroup_remove_update_users(ob, def_nr + 1);
/* Remove the group */
BLI_freelinkN(&ob->defbase, dg);
/* Update the active deform index if necessary */
if (ob->actdef > def_nr)
ob->actdef--;
/* remove all dverts */
if (BLI_listbase_is_empty(&ob->defbase)) {
if (ob->type == OB_MESH) {
Mesh *me = ob->data;
CustomData_free_layer_active(&me->vdata, CD_MDEFORMVERT, me->totvert);
me->dvert = NULL;
}
else if (ob->type == OB_LATTICE) {
Lattice *lt = object_defgroup_lattice_get((ID *)(ob->data));
if (lt->dvert) {
MEM_freeN(lt->dvert);
lt->dvert = NULL;
}
}
}
else if (ob->actdef < 1) { /* Keep a valid active index if we still have some vgroups. */
ob->actdef = 1;
}
}
static void object_defgroup_remove_object_mode(Object *ob, bDeformGroup *dg)
{
MDeformVert *dvert_array = NULL;
int dvert_tot = 0;
const int def_nr = BLI_findindex(&ob->defbase, dg);
BLI_assert(def_nr != -1);
BKE_object_defgroup_array_get(ob->data, &dvert_array, &dvert_tot);
if (dvert_array) {
int i, j;
MDeformVert *dv;
for (i = 0, dv = dvert_array; i < dvert_tot; i++, dv++) {
MDeformWeight *dw;
dw = defvert_find_index(dv, def_nr);
defvert_remove_group(dv, dw); /* dw can be NULL */
/* inline, make into a function if anything else needs to do this */
for (j = 0; j < dv->totweight; j++) {
if (dv->dw[j].def_nr > def_nr) {
dv->dw[j].def_nr--;
}
}
/* done */
}
}
object_defgroup_remove_common(ob, dg, def_nr);
}
static void object_defgroup_remove_edit_mode(Object *ob, bDeformGroup *dg)
{
int i;
const int def_nr = BLI_findindex(&ob->defbase, dg);
BLI_assert(def_nr != -1);
/* Make sure that no verts are using this group - if none were removed, we can skip next per-vert update. */
if (!BKE_object_defgroup_clear(ob, dg, false)) {
/* Nothing to do. */
}
/* Else, make sure that any groups with higher indices are adjusted accordingly */
else if (ob->type == OB_MESH) {
Mesh *me = ob->data;
BMEditMesh *em = me->edit_btmesh;
const int cd_dvert_offset = CustomData_get_offset(&em->bm->vdata, CD_MDEFORMVERT);
BMIter iter;
BMVert *eve;
MDeformVert *dvert;
BM_ITER_MESH (eve, &iter, em->bm, BM_VERTS_OF_MESH) {
dvert = BM_ELEM_CD_GET_VOID_P(eve, cd_dvert_offset);
if (dvert) {
for (i = 0; i < dvert->totweight; i++) {
if (dvert->dw[i].def_nr > def_nr) {
dvert->dw[i].def_nr--;
}
}
}
}
}
else if (ob->type == OB_LATTICE) {
Lattice *lt = ((Lattice *)(ob->data))->editlatt->latt;
BPoint *bp;
MDeformVert *dvert = lt->dvert;
int a, tot;
if (dvert) {
tot = lt->pntsu * lt->pntsv * lt->pntsw;
for (a = 0, bp = lt->def; a < tot; a++, bp++, dvert++) {
for (i = 0; i < dvert->totweight; i++) {
if (dvert->dw[i].def_nr > def_nr) {
dvert->dw[i].def_nr--;
}
}
}
}
}
object_defgroup_remove_common(ob, dg, def_nr);
}
/**
* Remove given vgroup from object. Work in Object and Edit modes.
*/
void BKE_object_defgroup_remove(Object *ob, bDeformGroup *defgroup)
{
if (ob->type == OB_GPENCIL) {
BKE_gpencil_vgroup_remove(ob, defgroup);
}
else {
if (BKE_object_is_in_editmode_vgroup(ob))
object_defgroup_remove_edit_mode(ob, defgroup);
else
object_defgroup_remove_object_mode(ob, defgroup);
BKE_object_batch_cache_dirty_tag(ob);
}
}
/**
* Remove all vgroups from object. Work in Object and Edit modes.
* When only_unlocked=true, locked vertex groups are not removed.
*/
void BKE_object_defgroup_remove_all_ex(struct Object *ob, bool only_unlocked)
{
bDeformGroup *dg = (bDeformGroup *)ob->defbase.first;
const bool edit_mode = BKE_object_is_in_editmode_vgroup(ob);
if (dg) {
while (dg) {
bDeformGroup *next_dg = dg->next;
if (!only_unlocked || (dg->flag & DG_LOCK_WEIGHT) == 0) {
if (edit_mode)
object_defgroup_remove_edit_mode(ob, dg);
else
object_defgroup_remove_object_mode(ob, dg);
}
dg = next_dg;
}
}
else { /* ob->defbase is empty... */
/* remove all dverts */
if (ob->type == OB_MESH) {
Mesh *me = ob->data;
CustomData_free_layer_active(&me->vdata, CD_MDEFORMVERT, me->totvert);
me->dvert = NULL;
}
else if (ob->type == OB_LATTICE) {
Lattice *lt = object_defgroup_lattice_get((ID *)(ob->data));
if (lt->dvert) {
MEM_freeN(lt->dvert);
lt->dvert = NULL;
}
}
/* Fix counters/indices */
ob->actdef = 0;
}
}
/**
* Remove all vgroups from object. Work in Object and Edit modes.
*/
void BKE_object_defgroup_remove_all(struct Object *ob)
{
BKE_object_defgroup_remove_all_ex(ob, false);
}
/**
* Compute mapping for vertex groups with matching name, -1 is used for no remapping.
* Returns null if no remapping is required.
* The returned array has to be freed.
*/
int *BKE_object_defgroup_index_map_create(Object *ob_src, Object *ob_dst, int *r_map_len)
{
/* Build src to merged mapping of vgroup indices. */
if (BLI_listbase_is_empty(&ob_src->defbase) || BLI_listbase_is_empty(&ob_dst->defbase)) {
*r_map_len = 0;
return NULL;
}
bDeformGroup *dg_src;
*r_map_len = BLI_listbase_count(&ob_src->defbase);
int *vgroup_index_map = MEM_malloc_arrayN(*r_map_len, sizeof(*vgroup_index_map), "defgroup index map create");
bool is_vgroup_remap_needed = false;
int i;
for (dg_src = ob_src->defbase.first, i = 0; dg_src; dg_src = dg_src->next, i++) {
vgroup_index_map[i] = defgroup_name_index(ob_dst, dg_src->name);
is_vgroup_remap_needed = is_vgroup_remap_needed || (vgroup_index_map[i] != i);
}
if (!is_vgroup_remap_needed) {
MEM_freeN(vgroup_index_map);
vgroup_index_map = NULL;
*r_map_len = 0;
}
return vgroup_index_map;
}
void BKE_object_defgroup_index_map_apply(MDeformVert *dvert, int dvert_len, const int *map, int map_len)
{
if (map == NULL || map_len == 0) {
return;
}
MDeformVert *dv = dvert;
for (int i = 0; i < dvert_len; i++, dv++) {
int totweight = dv->totweight;
for (int j = 0; j < totweight; j++) {
int def_nr = dv->dw[j].def_nr;
if ((uint)def_nr < (uint)map_len && map[def_nr] != -1) {
dv->dw[j].def_nr = map[def_nr];
}
else {
totweight--;
dv->dw[j] = dv->dw[totweight];
j--;
}
}
if (totweight != dv->totweight) {
if (totweight) {
dv->dw = MEM_reallocN(dv->dw, sizeof(*dv->dw) * totweight);
}
else {
MEM_SAFE_FREE(dv->dw);
}
dv->totweight = totweight;
}
}
}
/**
* Get MDeformVert vgroup data from given object. Should only be used in Object mode.
*
* \return True if the id type supports weights.
*/
bool BKE_object_defgroup_array_get(ID *id, MDeformVert **dvert_arr, int *dvert_tot)
{
if (id) {
switch (GS(id->name)) {
case ID_ME:
{
Mesh *me = (Mesh *)id;
*dvert_arr = me->dvert;
*dvert_tot = me->totvert;
return true;
}
case ID_LT:
{
Lattice *lt = object_defgroup_lattice_get(id);
*dvert_arr = lt->dvert;
*dvert_tot = lt->pntsu * lt->pntsv * lt->pntsw;
return true;
}
default:
break;
}
}
*dvert_arr = NULL;
*dvert_tot = 0;
return false;
}
/** \} */
/* --- functions for getting vgroup aligned maps --- */
/**
* gets the status of "flag" for each bDeformGroup
* in ob->defbase and returns an array containing them
*/
bool *BKE_object_defgroup_lock_flags_get(Object *ob, const int defbase_tot)
{
bool is_locked = false;
int i;
//int defbase_tot = BLI_listbase_count(&ob->defbase);
bool *lock_flags = MEM_mallocN(defbase_tot * sizeof(bool), "defflags");
bDeformGroup *defgroup;
for (i = 0, defgroup = ob->defbase.first; i < defbase_tot && defgroup; defgroup = defgroup->next, i++) {
lock_flags[i] = ((defgroup->flag & DG_LOCK_WEIGHT) != 0);
is_locked |= lock_flags[i];
}
if (is_locked) {
return lock_flags;
}
MEM_freeN(lock_flags);
return NULL;
}
bool *BKE_object_defgroup_validmap_get(Object *ob, const int defbase_tot)
{
bDeformGroup *dg;
ModifierData *md;
bool *defgroup_validmap;
GHash *gh;
int i, step1 = 1;
//int defbase_tot = BLI_listbase_count(&ob->defbase);
VirtualModifierData virtualModifierData;
if (BLI_listbase_is_empty(&ob->defbase)) {
return NULL;
}
gh = BLI_ghash_str_new_ex(__func__, defbase_tot);
/* add all names to a hash table */
for (dg = ob->defbase.first; dg; dg = dg->next) {
BLI_ghash_insert(gh, dg->name, NULL);
}
BLI_assert(BLI_ghash_len(gh) == defbase_tot);
/* now loop through the armature modifiers and identify deform bones */
for (md = ob->modifiers.first; md; md = !md->next && step1 ? (step1 = 0), modifiers_getVirtualModifierList(ob, &virtualModifierData) : md->next) {
if (!(md->mode & (eModifierMode_Realtime | eModifierMode_Virtual)))
continue;
if (md->type == eModifierType_Armature) {
ArmatureModifierData *amd = (ArmatureModifierData *) md;
if (amd->object && amd->object->pose) {
bPose *pose = amd->object->pose;
bPoseChannel *chan;
for (chan = pose->chanbase.first; chan; chan = chan->next) {
void **val_p;
if (chan->bone->flag & BONE_NO_DEFORM)
continue;
val_p = BLI_ghash_lookup_p(gh, chan->name);
if (val_p) {
*val_p = POINTER_FROM_INT(1);
}
}
}
}
}
defgroup_validmap = MEM_mallocN(sizeof(*defgroup_validmap) * defbase_tot, "wpaint valid map");
/* add all names to a hash table */
for (dg = ob->defbase.first, i = 0; dg; dg = dg->next, i++) {
defgroup_validmap[i] = (BLI_ghash_lookup(gh, dg->name) != NULL);
}
BLI_assert(i == BLI_ghash_len(gh));
BLI_ghash_free(gh, NULL, NULL);
return defgroup_validmap;
}
/* Returns total selected vgroups,
* wpi.defbase_sel is assumed malloc'd, all values are set */
bool *BKE_object_defgroup_selected_get(Object *ob, int defbase_tot, int *r_dg_flags_sel_tot)
{
bool *dg_selection = MEM_mallocN(defbase_tot * sizeof(bool), __func__);
bDeformGroup *defgroup;
unsigned int i;
Object *armob = BKE_object_pose_armature_get(ob);
(*r_dg_flags_sel_tot) = 0;
if (armob) {
bPose *pose = armob->pose;
for (i = 0, defgroup = ob->defbase.first; i < defbase_tot && defgroup; defgroup = defgroup->next, i++) {
bPoseChannel *pchan = BKE_pose_channel_find_name(pose, defgroup->name);
if (pchan && (pchan->bone->flag & BONE_SELECTED)) {
dg_selection[i] = true;
(*r_dg_flags_sel_tot) += 1;
}
else {
dg_selection[i] = false;
}
}
}
else {
memset(dg_selection, false, sizeof(*dg_selection) * defbase_tot);
}
return dg_selection;
}
/* Marks mirror vgroups in output and counts them. Output and counter assumed to be already initialized.
* Designed to be usable after BKE_object_defgroup_selected_get to extend selection to mirror.
*/
void BKE_object_defgroup_mirror_selection(
struct Object *ob, int defbase_tot, const bool *dg_selection,
bool *dg_flags_sel, int *r_dg_flags_sel_tot)
{
bDeformGroup *defgroup;
unsigned int i;
int i_mirr;
for (i = 0, defgroup = ob->defbase.first; i < defbase_tot && defgroup; defgroup = defgroup->next, i++) {
if (dg_selection[i]) {
char name_flip[MAXBONENAME];
BLI_string_flip_side_name(name_flip, defgroup->name, false, sizeof(name_flip));
i_mirr = STREQ(name_flip, defgroup->name) ? i : defgroup_name_index(ob, name_flip);
if ((i_mirr >= 0 && i_mirr < defbase_tot) && (dg_flags_sel[i_mirr] == false)) {
dg_flags_sel[i_mirr] = true;
(*r_dg_flags_sel_tot) += 1;
}
}
}
}
/**
* Return the subset type of the Vertex Group Selection
*/
bool *BKE_object_defgroup_subset_from_select_type(
Object *ob, eVGroupSelect subset_type, int *r_defgroup_tot, int *r_subset_count)
{
bool *defgroup_validmap = NULL;
*r_defgroup_tot = BLI_listbase_count(&ob->defbase);
switch (subset_type) {
case WT_VGROUP_ACTIVE:
{
const int def_nr_active = ob->actdef - 1;
defgroup_validmap = MEM_mallocN(*r_defgroup_tot * sizeof(*defgroup_validmap), __func__);
memset(defgroup_validmap, false, *r_defgroup_tot * sizeof(*defgroup_validmap));
if ((def_nr_active >= 0) && (def_nr_active < *r_defgroup_tot)) {
*r_subset_count = 1;
defgroup_validmap[def_nr_active] = true;
}
else {
*r_subset_count = 0;
}
break;
}
case WT_VGROUP_BONE_SELECT:
{
defgroup_validmap = BKE_object_defgroup_selected_get(ob, *r_defgroup_tot, r_subset_count);
break;
}
case WT_VGROUP_BONE_DEFORM:
{
int i;
defgroup_validmap = BKE_object_defgroup_validmap_get(ob, *r_defgroup_tot);
*r_subset_count = 0;
for (i = 0; i < *r_defgroup_tot; i++) {
if (defgroup_validmap[i] == true) {
*r_subset_count += 1;
}
}
break;
}
case WT_VGROUP_BONE_DEFORM_OFF:
{
int i;
defgroup_validmap = BKE_object_defgroup_validmap_get(ob, *r_defgroup_tot);
*r_subset_count = 0;
for (i = 0; i < *r_defgroup_tot; i++) {
defgroup_validmap[i] = !defgroup_validmap[i];
if (defgroup_validmap[i] == true) {
*r_subset_count += 1;
}
}
break;
}
case WT_VGROUP_ALL:
default:
{
defgroup_validmap = MEM_mallocN(*r_defgroup_tot * sizeof(*defgroup_validmap), __func__);
memset(defgroup_validmap, true, *r_defgroup_tot * sizeof(*defgroup_validmap));
*r_subset_count = *r_defgroup_tot;
break;
}
}
return defgroup_validmap;
}
/**
* store indices from the defgroup_validmap (faster lookups in some cases)
*/
void BKE_object_defgroup_subset_to_index_array(
const bool *defgroup_validmap, const int defgroup_tot, int *r_defgroup_subset_map)
{
int i, j = 0;
for (i = 0; i < defgroup_tot; i++) {
if (defgroup_validmap[i]) {
r_defgroup_subset_map[j++] = i;
}
}
}
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