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blender-archive/source/blender/blenkernel/intern/simulation.cc
Jacques Lucke b55c78a289 Simulation: Add modifier to access simulation data
For now the "Simulation" modifier only exists for point cloud objects, because
we need this for the particle system. Right now, the modifier is doing nothing.

There is a new `DEG_add_simulation_relation` function that is used
by the modifier to make sure that the simulation is evaluated before
the modifier is executed.

Reviewers: brecht, sergey

Differential Revision: https://developer.blender.org/D7549
2020-05-13 12:39:17 +02:00

118 lines
3.2 KiB
C++

/*
* 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 bke
*/
#include "MEM_guardedalloc.h"
#include "DNA_ID.h"
#include "DNA_defaults.h"
#include "DNA_scene_types.h"
#include "DNA_simulation_types.h"
#include "BLI_compiler_compat.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BLI_string.h"
#include "BLI_utildefines.h"
#include "BKE_anim_data.h"
#include "BKE_animsys.h"
#include "BKE_idtype.h"
#include "BKE_lib_id.h"
#include "BKE_lib_query.h"
#include "BKE_lib_remap.h"
#include "BKE_main.h"
#include "BKE_node.h"
#include "BKE_simulation.h"
#include "NOD_simulation.h"
#include "BLT_translation.h"
#include "DEG_depsgraph.h"
static void simulation_init_data(ID *id)
{
Simulation *simulation = (Simulation *)id;
BLI_assert(MEMCMP_STRUCT_AFTER_IS_ZERO(simulation, id));
MEMCPY_STRUCT_AFTER(simulation, DNA_struct_default_get(Simulation), id);
bNodeTree *ntree = ntreeAddTree(nullptr, "Simulation Nodetree", ntreeType_Simulation->idname);
simulation->nodetree = ntree;
}
static void simulation_copy_data(Main *bmain, ID *id_dst, const ID *id_src, const int flag)
{
Simulation *simulation_dst = (Simulation *)id_dst;
Simulation *simulation_src = (Simulation *)id_src;
/* We always need allocation of our private ID data. */
const int flag_private_id_data = flag & ~LIB_ID_CREATE_NO_ALLOCATE;
if (simulation_src->nodetree) {
BKE_id_copy_ex(bmain,
(ID *)simulation_src->nodetree,
(ID **)&simulation_dst->nodetree,
flag_private_id_data);
}
}
static void simulation_free_data(ID *id)
{
Simulation *simulation = (Simulation *)id;
BKE_animdata_free(&simulation->id, false);
if (simulation->nodetree) {
ntreeFreeEmbeddedTree(simulation->nodetree);
MEM_freeN(simulation->nodetree);
simulation->nodetree = nullptr;
}
}
void *BKE_simulation_add(Main *bmain, const char *name)
{
Simulation *simulation = (Simulation *)BKE_libblock_alloc(bmain, ID_SIM, name, 0);
simulation_init_data(&simulation->id);
return simulation;
}
IDTypeInfo IDType_ID_SIM = {
/* id_code */ ID_SIM,
/* id_filter */ FILTER_ID_SIM,
/* main_listbase_index */ INDEX_ID_SIM,
/* struct_size */ sizeof(Simulation),
/* name */ "Simulation",
/* name_plural */ "simulations",
/* translation_context */ BLT_I18NCONTEXT_ID_SIMULATION,
/* flags */ 0,
/* init_data */ simulation_init_data,
/* copy_data */ simulation_copy_data,
/* free_data */ simulation_free_data,
/* make_local */ nullptr,
};
void BKE_simulation_data_update(Depsgraph *UNUSED(depsgraph), Scene *UNUSED(scene))
{
}