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tornavis/source/blender/editors/physics/particle_object.cc

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/* SPDX-FileCopyrightText: 2009 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
/** \file
* \ingroup edphys
*/
#include <cstdlib>
#include <cstring>
#include "MEM_guardedalloc.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_modifier_types.h"
#include "DNA_scene_types.h"
#include "BLI_listbase.h"
#include "BLI_math_geom.h"
#include "BLI_math_matrix.h"
#include "BLI_math_vector.h"
#include "BLI_string.h"
#include "BLI_utildefines.h"
#include "BKE_bvhutils.hh"
#include "BKE_context.hh"
#include "BKE_customdata.hh"
#include "BKE_global.hh"
#include "BKE_layer.hh"
#include "BKE_lib_id.hh"
#include "BKE_mesh.hh"
#include "BKE_mesh_legacy_convert.hh"
#include "BKE_modifier.hh"
#include "BKE_object.hh"
#include "BKE_particle.h"
#include "BKE_pointcache.h"
#include "BKE_report.hh"
#include "DEG_depsgraph.hh"
#include "DEG_depsgraph_build.hh"
#include "DEG_depsgraph_query.hh"
#include "RNA_access.hh"
#include "RNA_define.hh"
#include "RNA_prototypes.h"
#include "WM_api.hh"
#include "WM_types.hh"
#include "ED_object.hh"
#include "ED_particle.hh"
#include "ED_screen.hh"
#include "particle_edit_utildefines.h"
#include "physics_intern.hh"
static float I[4][4] = {
{1.0f, 0.0f, 0.0f, 0.0f},
{0.0f, 1.0f, 0.0f, 0.0f},
{0.0f, 0.0f, 1.0f, 0.0f},
{0.0f, 0.0f, 0.0f, 1.0f},
};
/********************** particle system slot operators *********************/
static int particle_system_add_exec(bContext *C, wmOperator * /*op*/)
{
Main *bmain = CTX_data_main(C);
Object *ob = blender::ed::object::context_object(C);
Scene *scene = CTX_data_scene(C);
if (!scene || !ob) {
return OPERATOR_CANCELLED;
}
object_add_particle_system(bmain, scene, ob, nullptr);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
WM_event_add_notifier(C, NC_OBJECT | ND_POINTCACHE, ob);
return OPERATOR_FINISHED;
}
void OBJECT_OT_particle_system_add(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Add Particle System Slot";
ot->idname = "OBJECT_OT_particle_system_add";
ot->description = "Add a particle system";
/* api callbacks */
ot->poll = ED_operator_object_active_local_editable;
ot->exec = particle_system_add_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
static int particle_system_remove_exec(bContext *C, wmOperator * /*op*/)
{
Main *bmain = CTX_data_main(C);
Object *ob = blender::ed::object::context_object(C);
Scene *scene = CTX_data_scene(C);
ViewLayer *view_layer = CTX_data_view_layer(C);
int mode_orig;
if (!scene || !ob) {
return OPERATOR_CANCELLED;
}
mode_orig = ob->mode;
ParticleSystem *psys = psys_get_current(ob);
object_remove_particle_system(bmain, scene, ob, psys);
/* possible this isn't the active object
* object_remove_particle_system() clears the mode on the last psys
*/
if (mode_orig & OB_MODE_PARTICLE_EDIT) {
if ((ob->mode & OB_MODE_PARTICLE_EDIT) == 0) {
BKE_view_layer_synced_ensure(scene, view_layer);
if (BKE_view_layer_active_object_get(view_layer) == ob) {
WM_event_add_notifier(C, NC_SCENE | ND_MODE | NS_MODE_OBJECT, nullptr);
}
}
}
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
WM_event_add_notifier(C, NC_OBJECT | ND_POINTCACHE, ob);
return OPERATOR_FINISHED;
}
void OBJECT_OT_particle_system_remove(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Remove Particle System Slot";
ot->idname = "OBJECT_OT_particle_system_remove";
ot->description = "Remove the selected particle system";
/* api callbacks */
ot->poll = ED_operator_object_active_local_editable;
ot->exec = particle_system_remove_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/********************** new particle settings operator *********************/
static bool psys_poll(bContext *C)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
return (ptr.data != nullptr);
}
static int new_particle_settings_exec(bContext *C, wmOperator * /*op*/)
{
Main *bmain = CTX_data_main(C);
ParticleSystem *psys;
ParticleSettings *part = nullptr;
Object *ob;
PointerRNA ptr;
ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
psys = static_cast<ParticleSystem *>(ptr.data);
/* add or copy particle setting */
if (psys->part) {
part = (ParticleSettings *)BKE_id_copy(bmain, &psys->part->id);
}
else {
part = BKE_particlesettings_add(bmain, "ParticleSettings");
}
ob = (Object *)ptr.owner_id;
if (psys->part) {
id_us_min(&psys->part->id);
}
psys->part = part;
psys_check_boid_data(psys);
DEG_relations_tag_update(bmain);
DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_new(wmOperatorType *ot)
{
/* identifiers */
ot->name = "New Particle Settings";
ot->idname = "PARTICLE_OT_new";
ot->description = "Add new particle settings";
/* api callbacks */
ot->exec = new_particle_settings_exec;
ot->poll = psys_poll;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/********************** keyed particle target operators *********************/
static int new_particle_target_exec(bContext *C, wmOperator * /*op*/)
{
Main *bmain = CTX_data_main(C);
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
Object *ob = (Object *)ptr.owner_id;
ParticleTarget *pt;
if (!psys) {
return OPERATOR_CANCELLED;
}
pt = static_cast<ParticleTarget *>(psys->targets.first);
for (; pt; pt = pt->next) {
pt->flag &= ~PTARGET_CURRENT;
}
pt = static_cast<ParticleTarget *>(MEM_callocN(sizeof(ParticleTarget), "keyed particle target"));
pt->flag |= PTARGET_CURRENT;
pt->psys = 1;
BLI_addtail(&psys->targets, pt);
DEG_relations_tag_update(bmain);
DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_new_target(wmOperatorType *ot)
{
/* identifiers */
ot->name = "New Particle Target";
ot->idname = "PARTICLE_OT_new_target";
ot->description = "Add a new particle target";
/* api callbacks */
ot->exec = new_particle_target_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
static int remove_particle_target_exec(bContext *C, wmOperator * /*op*/)
{
Main *bmain = CTX_data_main(C);
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
Object *ob = (Object *)ptr.owner_id;
ParticleTarget *pt;
if (!psys) {
return OPERATOR_CANCELLED;
}
pt = static_cast<ParticleTarget *>(psys->targets.first);
for (; pt; pt = pt->next) {
if (pt->flag & PTARGET_CURRENT) {
BLI_remlink(&psys->targets, pt);
MEM_freeN(pt);
break;
}
}
pt = static_cast<ParticleTarget *>(psys->targets.last);
if (pt) {
pt->flag |= PTARGET_CURRENT;
}
DEG_relations_tag_update(bmain);
DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_target_remove(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Remove Particle Target";
ot->idname = "PARTICLE_OT_target_remove";
ot->description = "Remove the selected particle target";
/* api callbacks */
ot->exec = remove_particle_target_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/************************ move up particle target operator *********************/
static int target_move_up_exec(bContext *C, wmOperator * /*op*/)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
Object *ob = (Object *)ptr.owner_id;
ParticleTarget *pt;
if (!psys) {
return OPERATOR_CANCELLED;
}
pt = static_cast<ParticleTarget *>(psys->targets.first);
for (; pt; pt = pt->next) {
if (pt->flag & PTARGET_CURRENT && pt->prev) {
BLI_remlink(&psys->targets, pt);
BLI_insertlinkbefore(&psys->targets, pt->prev, pt);
DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
break;
}
}
return OPERATOR_FINISHED;
}
void PARTICLE_OT_target_move_up(wmOperatorType *ot)
{
ot->name = "Move Up Target";
ot->idname = "PARTICLE_OT_target_move_up";
ot->description = "Move particle target up in the list";
ot->exec = target_move_up_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/************************ move down particle target operator *********************/
static int target_move_down_exec(bContext *C, wmOperator * /*op*/)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
Object *ob = (Object *)ptr.owner_id;
ParticleTarget *pt;
if (!psys) {
return OPERATOR_CANCELLED;
}
pt = static_cast<ParticleTarget *>(psys->targets.first);
for (; pt; pt = pt->next) {
if (pt->flag & PTARGET_CURRENT && pt->next) {
BLI_remlink(&psys->targets, pt);
BLI_insertlinkafter(&psys->targets, pt->next, pt);
DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
break;
}
}
return OPERATOR_FINISHED;
}
void PARTICLE_OT_target_move_down(wmOperatorType *ot)
{
ot->name = "Move Down Target";
ot->idname = "PARTICLE_OT_target_move_down";
ot->description = "Move particle target down in the list";
ot->exec = target_move_down_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/************************ refresh dupli objects *********************/
static int dupliob_refresh_exec(bContext *C, wmOperator * /*op*/)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
if (!psys) {
return OPERATOR_CANCELLED;
}
psys_check_group_weights(psys->part);
DEG_id_tag_update(&psys->part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_REDO);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, nullptr);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_dupliob_refresh(wmOperatorType *ot)
{
ot->name = "Refresh Instance Objects";
ot->idname = "PARTICLE_OT_dupliob_refresh";
ot->description = "Refresh list of instance objects and their weights";
ot->exec = dupliob_refresh_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/************************ move up particle dupli-weight operator *********************/
static int dupliob_move_up_exec(bContext *C, wmOperator * /*op*/)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
ParticleSettings *part;
if (!psys) {
return OPERATOR_CANCELLED;
}
part = psys->part;
LISTBASE_FOREACH (ParticleDupliWeight *, dw, &part->instance_weights) {
if (dw->flag & PART_DUPLIW_CURRENT && dw->prev) {
BLI_remlink(&part->instance_weights, dw);
BLI_insertlinkbefore(&part->instance_weights, dw->prev, dw);
DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_REDO);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, nullptr);
break;
}
}
return OPERATOR_FINISHED;
}
void PARTICLE_OT_dupliob_move_up(wmOperatorType *ot)
{
ot->name = "Move Up Instance Object";
ot->idname = "PARTICLE_OT_dupliob_move_up";
ot->description = "Move instance object up in the list";
ot->exec = dupliob_move_up_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/********************** particle dupliweight operators *********************/
static int copy_particle_dupliob_exec(bContext *C, wmOperator * /*op*/)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
ParticleSettings *part;
if (!psys) {
return OPERATOR_CANCELLED;
}
part = psys->part;
LISTBASE_FOREACH (ParticleDupliWeight *, dw, &part->instance_weights) {
if (dw->flag & PART_DUPLIW_CURRENT) {
dw->flag &= ~PART_DUPLIW_CURRENT;
dw = static_cast<ParticleDupliWeight *>(MEM_dupallocN(dw));
dw->flag |= PART_DUPLIW_CURRENT;
BLI_addhead(&part->instance_weights, dw);
DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_REDO);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, nullptr);
break;
}
}
return OPERATOR_FINISHED;
}
void PARTICLE_OT_dupliob_copy(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Copy Particle Instance Object";
ot->idname = "PARTICLE_OT_dupliob_copy";
ot->description = "Duplicate the current instance object";
/* api callbacks */
ot->exec = copy_particle_dupliob_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
static int remove_particle_dupliob_exec(bContext *C, wmOperator * /*op*/)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
ParticleSettings *part;
if (!psys) {
return OPERATOR_CANCELLED;
}
part = psys->part;
LISTBASE_FOREACH (ParticleDupliWeight *, dw, &part->instance_weights) {
if (dw->flag & PART_DUPLIW_CURRENT) {
BLI_remlink(&part->instance_weights, dw);
MEM_freeN(dw);
break;
}
}
ParticleDupliWeight *dw = static_cast<ParticleDupliWeight *>(part->instance_weights.last);
if (dw) {
dw->flag |= PART_DUPLIW_CURRENT;
}
DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_REDO);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, nullptr);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_dupliob_remove(wmOperatorType *ot)
{
/* identifiers */
ot->name = "Remove Particle Instance Object";
ot->idname = "PARTICLE_OT_dupliob_remove";
ot->description = "Remove the selected instance object";
/* api callbacks */
ot->exec = remove_particle_dupliob_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/************************ move down particle dupliweight operator *********************/
static int dupliob_move_down_exec(bContext *C, wmOperator * /*op*/)
{
PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem);
ParticleSystem *psys = static_cast<ParticleSystem *>(ptr.data);
ParticleSettings *part;
if (!psys) {
return OPERATOR_CANCELLED;
}
part = psys->part;
LISTBASE_FOREACH (ParticleDupliWeight *, dw, &part->instance_weights) {
if (dw->flag & PART_DUPLIW_CURRENT && dw->next) {
BLI_remlink(&part->instance_weights, dw);
BLI_insertlinkafter(&part->instance_weights, dw->next, dw);
DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_REDO);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, nullptr);
break;
}
}
return OPERATOR_FINISHED;
}
void PARTICLE_OT_dupliob_move_down(wmOperatorType *ot)
{
ot->name = "Move Down Instance Object";
ot->idname = "PARTICLE_OT_dupliob_move_down";
ot->description = "Move instance object down in the list";
ot->exec = dupliob_move_down_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
/************************ connect/disconnect hair operators *********************/
static void disconnect_hair(Depsgraph *depsgraph, Scene *scene, Object *ob, ParticleSystem *psys)
{
Object *object_eval = DEG_get_evaluated_object(depsgraph, ob);
ParticleSystem *psys_eval = psys_eval_get(depsgraph, ob, psys);
ParticleSystemModifierData *psmd_eval = psys_get_modifier(object_eval, psys_eval);
ParticleEditSettings *pset = PE_settings(scene);
ParticleData *pa;
PTCacheEdit *edit;
PTCacheEditPoint *point;
PTCacheEditKey *ekey = nullptr;
HairKey *key;
int i, k;
float hairmat[4][4];
if (!ob || !psys || psys->flag & PSYS_GLOBAL_HAIR) {
return;
}
if (!psys->part || psys->part->type != PART_HAIR) {
return;
}
edit = psys->edit;
point = edit ? edit->points : nullptr;
for (i = 0, pa = psys->particles; i < psys->totpart; i++, pa++) {
if (point) {
ekey = point->keys;
point++;
}
psys_mat_hair_to_global(ob, psmd_eval->mesh_final, psys->part->from, pa, hairmat);
for (k = 0, key = pa->hair; k < pa->totkey; k++, key++) {
mul_m4_v3(hairmat, key->co);
if (ekey) {
ekey->flag &= ~PEK_USE_WCO;
ekey++;
}
}
}
psys_free_path_cache(psys, psys->edit);
psys->flag |= PSYS_GLOBAL_HAIR;
if (ELEM(pset->brushtype, PE_BRUSH_ADD, PE_BRUSH_PUFF)) {
pset->brushtype = PE_BRUSH_COMB;
}
PE_update_object(depsgraph, scene, ob, 0);
}
static int disconnect_hair_exec(bContext *C, wmOperator *op)
{
Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
Scene *scene = CTX_data_scene(C);
Object *ob = blender::ed::object::context_object(C);
ParticleSystem *psys = nullptr;
const bool all = RNA_boolean_get(op->ptr, "all");
if (!ob) {
return OPERATOR_CANCELLED;
}
if (all) {
LISTBASE_FOREACH (ParticleSystem *, psys, &ob->particlesystem) {
disconnect_hair(depsgraph, scene, ob, psys);
}
}
else {
psys = psys_get_current(ob);
disconnect_hair(depsgraph, scene, ob, psys);
}
DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_disconnect_hair(wmOperatorType *ot)
{
ot->name = "Disconnect Hair";
ot->description = "Disconnect hair from the emitter mesh";
ot->idname = "PARTICLE_OT_disconnect_hair";
ot->exec = disconnect_hair_exec;
/* flags */
/* No REGISTER, redo does not work due to missing update, see #47750. */
ot->flag = OPTYPE_UNDO;
RNA_def_boolean(
ot->srna, "all", false, "All Hair", "Disconnect all hair systems from the emitter mesh");
}
/* from/to_world_space : whether from/to particles are in world or hair space
* from/to_mat : additional transform for from/to particles (e.g. for using object space copying)
*/
static bool remap_hair_emitter(Depsgraph *depsgraph,
Scene *scene,
Object *ob,
ParticleSystem *psys,
Object *target_ob,
ParticleSystem *target_psys,
PTCacheEdit *target_edit,
const float from_mat[4][4],
const float to_mat[4][4],
bool from_global,
bool to_global)
{
Object *object_eval = DEG_get_evaluated_object(depsgraph, ob);
ParticleSystem *psys_eval = psys_eval_get(depsgraph, ob, psys);
ParticleSystemModifierData *target_psmd = psys_get_modifier(object_eval, psys_eval);
ParticleData *pa, *tpa;
PTCacheEditPoint *edit_point;
PTCacheEditKey *ekey;
BVHTreeFromMesh bvhtree = {nullptr};
const MFace *mface = nullptr, *mf;
const blender::int2 *edges = nullptr, *edge;
Mesh *mesh, *target_mesh;
int numverts;
int k;
float from_ob_imat[4][4], to_ob_imat[4][4];
float from_imat[4][4], to_imat[4][4];
if (!target_psmd->mesh_final) {
return false;
}
if (!psys->part || psys->part->type != PART_HAIR) {
return false;
}
if (!target_psys->part || target_psys->part->type != PART_HAIR) {
return false;
}
edit_point = target_edit ? target_edit->points : nullptr;
invert_m4_m4(from_ob_imat, ob->object_to_world().ptr());
invert_m4_m4(to_ob_imat, target_ob->object_to_world().ptr());
invert_m4_m4(from_imat, from_mat);
invert_m4_m4(to_imat, to_mat);
const bool use_dm_final_indices = (target_psys->part->use_modifier_stack &&
!target_psmd->mesh_final->runtime->deformed_only);
if (use_dm_final_indices || !target_psmd->mesh_original) {
mesh = target_psmd->mesh_final;
}
else {
mesh = target_psmd->mesh_original;
}
target_mesh = target_psmd->mesh_final;
if (mesh == nullptr) {
return false;
}
/* don't modify the original vertices */
/* we don't want to mess up target_psmd->dm when converting to global coordinates below */
mesh = (Mesh *)BKE_id_copy_ex(nullptr, &mesh->id, nullptr, LIB_ID_COPY_LOCALIZE);
/* BMESH_ONLY, deform dm may not have tessface */
BKE_mesh_tessface_ensure(mesh);
numverts = mesh->verts_num;
blender::MutableSpan<blender::float3> positions = mesh->vert_positions_for_write();
/* convert to global coordinates */
for (int i = 0; i < numverts; i++) {
mul_m4_v3(to_mat, positions[i]);
}
if (mesh->totface_legacy != 0) {
mface = static_cast<const MFace *>(CustomData_get_layer(&mesh->fdata_legacy, CD_MFACE));
BKE_bvhtree_from_mesh_get(&bvhtree, mesh, BVHTREE_FROM_FACES, 2);
}
else if (mesh->edges_num != 0) {
edges = static_cast<const blender::int2 *>(
CustomData_get_layer_named(&mesh->edge_data, CD_PROP_INT32_2D, ".edge_verts"));
BKE_bvhtree_from_mesh_get(&bvhtree, mesh, BVHTREE_FROM_EDGES, 2);
}
else {
BKE_id_free(nullptr, mesh);
return false;
}
int i;
for (i = 0, tpa = target_psys->particles, pa = psys->particles; i < target_psys->totpart;
i++, tpa++, pa++)
{
float from_co[3];
BVHTreeNearest nearest;
if (from_global) {
mul_v3_m4v3(from_co, from_ob_imat, pa->hair[0].co);
}
else {
mul_v3_m4v3(from_co, from_ob_imat, pa->hair[0].world_co);
}
mul_m4_v3(from_mat, from_co);
nearest.index = -1;
nearest.dist_sq = FLT_MAX;
BLI_bvhtree_find_nearest(bvhtree.tree, from_co, &nearest, bvhtree.nearest_callback, &bvhtree);
if (nearest.index == -1) {
if (G.debug & G_DEBUG) {
printf("No nearest point found for hair root!");
}
continue;
}
if (mface) {
float v[4][3];
mf = &mface[nearest.index];
copy_v3_v3(v[0], positions[mf->v1]);
copy_v3_v3(v[1], positions[mf->v2]);
copy_v3_v3(v[2], positions[mf->v3]);
if (mf->v4) {
copy_v3_v3(v[3], positions[mf->v4]);
interp_weights_poly_v3(tpa->fuv, v, 4, nearest.co);
}
else {
interp_weights_poly_v3(tpa->fuv, v, 3, nearest.co);
}
tpa->foffset = 0.0f;
tpa->num = nearest.index;
if (use_dm_final_indices) {
tpa->num_dmcache = DMCACHE_ISCHILD;
}
else {
tpa->num_dmcache = psys_particle_dm_face_lookup(
target_psmd->mesh_final, target_psmd->mesh_original, tpa->num, tpa->fuv, nullptr);
}
}
else {
edge = &edges[nearest.index];
tpa->fuv[1] = line_point_factor_v3(nearest.co, positions[edge->x], positions[edge->y]);
tpa->fuv[0] = 1.0f - tpa->fuv[1];
tpa->fuv[2] = tpa->fuv[3] = 0.0f;
tpa->foffset = 0.0f;
tpa->num = nearest.index;
tpa->num_dmcache = -1;
}
/* translate hair keys */
{
HairKey *key, *tkey;
float hairmat[4][4], imat[4][4];
float offset[3];
if (to_global) {
copy_m4_m4(imat, target_ob->object_to_world().ptr());
}
else {
/* NOTE: using target_dm here, which is in target_ob object space and has full modifiers.
*/
psys_mat_hair_to_object(target_ob, target_mesh, target_psys->part->from, tpa, hairmat);
invert_m4_m4(imat, hairmat);
}
mul_m4_m4m4(imat, imat, to_imat);
/* offset in world space */
sub_v3_v3v3(offset, nearest.co, from_co);
if (edit_point) {
for (k = 0, key = pa->hair, tkey = tpa->hair, ekey = edit_point->keys; k < tpa->totkey;
k++, key++, tkey++, ekey++)
{
float co_orig[3];
if (from_global) {
mul_v3_m4v3(co_orig, from_ob_imat, key->co);
}
else {
mul_v3_m4v3(co_orig, from_ob_imat, key->world_co);
}
mul_m4_v3(from_mat, co_orig);
add_v3_v3v3(tkey->co, co_orig, offset);
mul_m4_v3(imat, tkey->co);
ekey->flag |= PEK_USE_WCO;
}
edit_point++;
}
else {
for (k = 0, key = pa->hair, tkey = tpa->hair; k < tpa->totkey; k++, key++, tkey++) {
float co_orig[3];
if (from_global) {
mul_v3_m4v3(co_orig, from_ob_imat, key->co);
}
else {
mul_v3_m4v3(co_orig, from_ob_imat, key->world_co);
}
mul_m4_v3(from_mat, co_orig);
add_v3_v3v3(tkey->co, co_orig, offset);
mul_m4_v3(imat, tkey->co);
}
}
}
}
free_bvhtree_from_mesh(&bvhtree);
BKE_id_free(nullptr, mesh);
psys_free_path_cache(target_psys, target_edit);
PE_update_object(depsgraph, scene, target_ob, 0);
return true;
}
static bool connect_hair(Depsgraph *depsgraph, Scene *scene, Object *ob, ParticleSystem *psys)
{
bool ok;
if (!psys) {
return false;
}
ok = remap_hair_emitter(depsgraph,
scene,
ob,
psys,
ob,
psys,
psys->edit,
ob->object_to_world().ptr(),
ob->object_to_world().ptr(),
psys->flag & PSYS_GLOBAL_HAIR,
false);
if (ok) {
psys->flag &= ~PSYS_GLOBAL_HAIR;
}
return ok;
}
static int connect_hair_exec(bContext *C, wmOperator *op)
{
Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
Scene *scene = CTX_data_scene(C);
Object *ob = blender::ed::object::context_object(C);
ParticleSystem *psys = nullptr;
const bool all = RNA_boolean_get(op->ptr, "all");
bool any_connected = false;
if (!ob) {
return OPERATOR_CANCELLED;
}
if (all) {
LISTBASE_FOREACH (ParticleSystem *, psys, &ob->particlesystem) {
any_connected |= connect_hair(depsgraph, scene, ob, psys);
}
}
else {
psys = psys_get_current(ob);
any_connected |= connect_hair(depsgraph, scene, ob, psys);
}
if (!any_connected) {
BKE_report(op->reports,
RPT_WARNING,
"No hair connected (can't connect hair if particle system modifier is disabled)");
return OPERATOR_CANCELLED;
}
DEG_id_tag_update(&ob->id, ID_RECALC_GEOMETRY);
WM_event_add_notifier(C, NC_OBJECT | ND_PARTICLE, ob);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_connect_hair(wmOperatorType *ot)
{
ot->name = "Connect Hair";
ot->description = "Connect hair to the emitter mesh";
ot->idname = "PARTICLE_OT_connect_hair";
ot->exec = connect_hair_exec;
/* flags */
/* No REGISTER, redo does not work due to missing update, see #47750. */
ot->flag = OPTYPE_UNDO;
RNA_def_boolean(
ot->srna, "all", false, "All Hair", "Connect all hair systems to the emitter mesh");
}
/************************ particle system copy operator *********************/
enum eCopyParticlesSpace {
PAR_COPY_SPACE_OBJECT = 0,
PAR_COPY_SPACE_WORLD = 1,
};
static void copy_particle_edit(Depsgraph *depsgraph,
Scene *scene,
Object *ob,
ParticleSystem *psys,
ParticleSystem *psys_from)
{
PTCacheEdit *edit_from = psys_from->edit, *edit;
ParticleData *pa;
KEY_K;
POINT_P;
if (!edit_from) {
return;
}
edit = static_cast<PTCacheEdit *>(MEM_dupallocN(edit_from));
edit->psys = psys;
psys->edit = edit;
edit->pathcache = nullptr;
BLI_listbase_clear(&edit->pathcachebufs);
edit->emitter_field = nullptr;
edit->emitter_cosnos = nullptr;
edit->points = static_cast<PTCacheEditPoint *>(MEM_dupallocN(edit_from->points));
pa = psys->particles;
LOOP_POINTS {
HairKey *hkey = pa->hair;
point->keys = static_cast<PTCacheEditKey *>(MEM_dupallocN(point->keys));
LOOP_KEYS {
key->co = hkey->co;
key->time = &hkey->time;
key->flag = hkey->editflag;
if (!(psys->flag & PSYS_GLOBAL_HAIR)) {
key->flag |= PEK_USE_WCO;
hkey->editflag |= PEK_USE_WCO;
}
hkey++;
}
pa++;
}
update_world_cos(ob, edit);
recalc_lengths(edit);
recalc_emitter_field(depsgraph, ob, psys);
PE_update_object(depsgraph, scene, ob, true);
}
static void remove_particle_systems_from_object(Object *ob_to)
{
ModifierData *md, *md_next;
if (ob_to->type != OB_MESH) {
return;
}
if (!ob_to->data || ID_IS_LINKED(ob_to->data) || ID_IS_OVERRIDE_LIBRARY(ob_to->data)) {
return;
}
for (md = static_cast<ModifierData *>(ob_to->modifiers.first); md; md = md_next) {
md_next = md->next;
/* remove all particle system modifiers as well,
* these need to sync to the particle system list
*/
if (ELEM(md->type,
eModifierType_ParticleSystem,
eModifierType_DynamicPaint,
eModifierType_Fluid))
{
BLI_remlink(&ob_to->modifiers, md);
BKE_modifier_free(md);
}
}
BKE_object_free_particlesystems(ob_to);
}
/* single_psys_from is optional, if nullptr all psys of ob_from are copied */
static bool copy_particle_systems_to_object(const bContext *C,
Scene *scene,
Object *ob_from,
ParticleSystem *single_psys_from,
Object *ob_to,
int space,
bool duplicate_settings)
{
Main *bmain = CTX_data_main(C);
Depsgraph *depsgraph = CTX_data_ensure_evaluated_depsgraph(C);
ModifierData *md;
ParticleSystem *psys_start = nullptr, *psys, *psys_from;
ParticleSystem **tmp_psys;
CustomData_MeshMasks cdmask = {0};
int i, totpsys;
if (ob_to->type != OB_MESH) {
return false;
}
if (!ob_to->data || !BKE_id_is_editable(bmain, static_cast<const ID *>(ob_to->data))) {
return false;
}
/* For remapping we need a valid DM.
* Because the modifiers are appended at the end it's safe to use
* the final DM of the object without particles.
* However, when evaluating the DM all the particle modifiers must be valid,
* i.e. have the psys assigned already.
*
* To break this hen/egg problem we create all psys separately first
* (to collect required customdata masks),
* then create the DM, then add them to the object and make the psys modifiers.
*/
#define PSYS_FROM_FIRST \
static_cast<ParticleSystem *>( \
(single_psys_from ? single_psys_from : ob_from->particlesystem.first))
#define PSYS_FROM_NEXT(cur) (single_psys_from ? nullptr : (cur)->next)
totpsys = single_psys_from ? 1 : BLI_listbase_count(&ob_from->particlesystem);
tmp_psys = static_cast<ParticleSystem **>(
MEM_mallocN(sizeof(ParticleSystem *) * totpsys, "temporary particle system array"));
for (psys_from = PSYS_FROM_FIRST, i = 0; psys_from; psys_from = PSYS_FROM_NEXT(psys_from), i++) {
psys = BKE_object_copy_particlesystem(psys_from, 0);
tmp_psys[i] = psys;
if (psys_start == nullptr) {
psys_start = psys;
}
psys_emitter_customdata_mask(psys, &cdmask);
}
/* to iterate source and target psys in sync,
* we need to know where the newly added psys start
*/
psys_start = totpsys > 0 ? tmp_psys[0] : nullptr;
/* now append psys to the object and make modifiers */
for (i = 0, psys_from = PSYS_FROM_FIRST; i < totpsys; ++i, psys_from = PSYS_FROM_NEXT(psys_from))
{
ParticleSystemModifierData *psmd;
psys = tmp_psys[i];
/* append to the object */
BLI_addtail(&ob_to->particlesystem, psys);
psys_unique_name(ob_to, psys, psys->name);
/* add a particle system modifier for each system */
md = BKE_modifier_new(eModifierType_ParticleSystem);
psmd = (ParticleSystemModifierData *)md;
/* push on top of the stack, no use trying to reproduce old stack order */
BLI_addtail(&ob_to->modifiers, md);
BKE_modifiers_persistent_uid_init(*ob_to, *md);
SNPRINTF(md->name, "ParticleSystem %i", i);
BKE_modifier_unique_name(&ob_to->modifiers, (ModifierData *)psmd);
psmd->psys = psys;
if (psys_from->edit) {
copy_particle_edit(depsgraph, scene, ob_to, psys, psys_from);
}
if (duplicate_settings) {
id_us_min(&psys->part->id);
psys->part = (ParticleSettings *)BKE_id_copy(bmain, &psys->part->id);
}
}
MEM_freeN(tmp_psys);
/* NOTE: do this after creating DM copies for all the particle system modifiers,
* the remapping otherwise makes final_dm invalid!
*/
for (psys = psys_start, psys_from = PSYS_FROM_FIRST, i = 0; psys;
psys = psys->next, psys_from = PSYS_FROM_NEXT(psys_from), i++)
{
const float(*from_mat)[4], (*to_mat)[4];
switch (space) {
case PAR_COPY_SPACE_OBJECT:
from_mat = I;
to_mat = I;
break;
case PAR_COPY_SPACE_WORLD:
from_mat = ob_from->object_to_world().ptr();
to_mat = ob_to->object_to_world().ptr();
break;
default:
/* should not happen */
from_mat = to_mat = nullptr;
BLI_assert(false);
break;
}
if (ob_from != ob_to) {
remap_hair_emitter(depsgraph,
scene,
ob_from,
psys_from,
ob_to,
psys,
psys->edit,
from_mat,
to_mat,
psys_from->flag & PSYS_GLOBAL_HAIR,
psys->flag & PSYS_GLOBAL_HAIR);
}
/* tag for recalc */
// psys->recalc |= ID_RECALC_PSYS_RESET;
}
#undef PSYS_FROM_FIRST
#undef PSYS_FROM_NEXT
DEG_relations_tag_update(bmain);
DEG_id_tag_update(&ob_to->id, ID_RECALC_GEOMETRY);
WM_main_add_notifier(NC_OBJECT | ND_PARTICLE | NA_EDITED, ob_to);
return true;
}
static bool copy_particle_systems_poll(bContext *C)
{
Object *ob;
if (!ED_operator_object_active_local_editable(C)) {
return false;
}
ob = blender::ed::object::context_active_object(C);
if (BLI_listbase_is_empty(&ob->particlesystem)) {
return false;
}
return true;
}
static int copy_particle_systems_exec(bContext *C, wmOperator *op)
{
const int space = RNA_enum_get(op->ptr, "space");
const bool remove_target_particles = RNA_boolean_get(op->ptr, "remove_target_particles");
const bool use_active = RNA_boolean_get(op->ptr, "use_active");
Scene *scene = CTX_data_scene(C);
Object *ob_from = blender::ed::object::context_active_object(C);
ParticleSystem *psys_from = nullptr;
if (use_active) {
psys_from = static_cast<ParticleSystem *>(
CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem).data);
if (psys_from == nullptr) {
/* Particle System context pointer is only valid in the Properties Editor. */
psys_from = psys_get_current(ob_from);
}
}
int changed_tot = 0;
int fail = 0;
CTX_DATA_BEGIN (C, Object *, ob_to, selected_editable_objects) {
if (ob_from != ob_to) {
bool changed = false;
if (remove_target_particles) {
remove_particle_systems_from_object(ob_to);
changed = true;
}
if (copy_particle_systems_to_object(C, scene, ob_from, psys_from, ob_to, space, false)) {
changed = true;
}
else {
fail++;
}
if (changed) {
changed_tot++;
}
}
}
CTX_DATA_END;
if (changed_tot > 0) {
DEG_relations_tag_update(CTX_data_main(C));
}
if ((changed_tot == 0 && fail == 0) || fail) {
BKE_reportf(op->reports,
RPT_ERROR,
"Copy particle systems to selected: %d done, %d failed",
changed_tot,
fail);
}
return OPERATOR_FINISHED;
}
void PARTICLE_OT_copy_particle_systems(wmOperatorType *ot)
{
static const EnumPropertyItem space_items[] = {
{PAR_COPY_SPACE_OBJECT, "OBJECT", 0, "Object", "Copy inside each object's local space"},
{PAR_COPY_SPACE_WORLD, "WORLD", 0, "World", "Copy in world space"},
{0, nullptr, 0, nullptr, nullptr},
};
ot->name = "Copy Particle Systems";
ot->description = "Copy particle systems from the active object to selected objects";
ot->idname = "PARTICLE_OT_copy_particle_systems";
ot->poll = copy_particle_systems_poll;
ot->exec = copy_particle_systems_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
RNA_def_enum(ot->srna,
"space",
space_items,
PAR_COPY_SPACE_OBJECT,
"Space",
"Space transform for copying from one object to another");
RNA_def_boolean(ot->srna,
"remove_target_particles",
true,
"Remove Target Particles",
"Remove particle systems on the target objects");
RNA_def_boolean(ot->srna,
"use_active",
false,
"Use Active",
"Use the active particle system from the context");
}
static bool duplicate_particle_systems_poll(bContext *C)
{
if (!ED_operator_object_active_local_editable(C)) {
return false;
}
Object *ob = blender::ed::object::context_active_object(C);
if (BLI_listbase_is_empty(&ob->particlesystem)) {
return false;
}
return true;
}
static int duplicate_particle_systems_exec(bContext *C, wmOperator *op)
{
const bool duplicate_settings = RNA_boolean_get(op->ptr, "use_duplicate_settings");
Scene *scene = CTX_data_scene(C);
Object *ob = blender::ed::object::context_active_object(C);
/* Context pointer is only valid in the Properties Editor. */
ParticleSystem *psys = static_cast<ParticleSystem *>(
CTX_data_pointer_get_type(C, "particle_system", &RNA_ParticleSystem).data);
if (psys == nullptr) {
psys = psys_get_current(ob);
}
copy_particle_systems_to_object(
C, scene, ob, psys, ob, PAR_COPY_SPACE_OBJECT, duplicate_settings);
return OPERATOR_FINISHED;
}
void PARTICLE_OT_duplicate_particle_system(wmOperatorType *ot)
{
ot->name = "Duplicate Particle System";
ot->description = "Duplicate particle system within the active object";
ot->idname = "PARTICLE_OT_duplicate_particle_system";
ot->poll = duplicate_particle_systems_poll;
ot->exec = duplicate_particle_systems_exec;
/* flags */
ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
RNA_def_boolean(ot->srna,
"use_duplicate_settings",
false,
"Duplicate Settings",
"Duplicate settings as well, so the new particle system uses its own settings");
}
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