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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): Campbell Barton
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file blender/modifiers/intern/MOD_meshsequencecache.c
* \ingroup modifiers
*/
#include "DNA_cachefile_types.h"
#include "DNA_mesh_types.h"
#include "DNA_modifier_types.h"
#include "DNA_object_types.h"
#include "DNA_scene_types.h"
#include "BKE_cachefile.h"
#include "BKE_DerivedMesh.h"
#include "BKE_cdderivedmesh.h"
#include "BKE_global.h"
#include "BKE_library.h"
#include "BKE_library_query.h"
#include "BKE_scene.h"
#include "DEG_depsgraph_build.h"
#include "MOD_modifiertypes.h"
#ifdef WITH_ALEMBIC
# include "ABC_alembic.h"
#endif
static void initData(ModifierData *md)
{
MeshSeqCacheModifierData *mcmd = (MeshSeqCacheModifierData *)md;
mcmd->cache_file = NULL;
mcmd->object_path[0] = '\0';
mcmd->read_flag = MOD_MESHSEQ_READ_ALL;
}
static void copyData(ModifierData *md, ModifierData *target)
{
#if 0
MeshSeqCacheModifierData *mcmd = (MeshSeqCacheModifierData *)md;
#endif
MeshSeqCacheModifierData *tmcmd = (MeshSeqCacheModifierData *)target;
modifier_copyData_generic(md, target);
if (tmcmd->cache_file) {
id_us_plus(&tmcmd->cache_file->id);
tmcmd->reader = NULL;
}
}
static void freeData(ModifierData *md)
{
MeshSeqCacheModifierData *mcmd = (MeshSeqCacheModifierData *) md;
if (mcmd->cache_file) {
id_us_min(&mcmd->cache_file->id);
}
if (mcmd->reader) {
#ifdef WITH_ALEMBIC
CacheReader_free(mcmd->reader);
#endif
mcmd->reader = NULL;
}
}
static bool isDisabled(ModifierData *md, int UNUSED(useRenderParams))
{
MeshSeqCacheModifierData *mcmd = (MeshSeqCacheModifierData *) md;
/* leave it up to the modifier to check the file is valid on calculation */
return (mcmd->cache_file == NULL) || (mcmd->object_path[0] == '\0');
}
static DerivedMesh *applyModifier(ModifierData *md, const struct EvaluationContext *UNUSED(eval_ctx),
Object *ob, DerivedMesh *dm,
ModifierApplyFlag UNUSED(flag))
{
#ifdef WITH_ALEMBIC
MeshSeqCacheModifierData *mcmd = (MeshSeqCacheModifierData *) md;
/* Only used to check whether we are operating on org data or not... */
Mesh *me = (ob->type == OB_MESH) ? ob->data : NULL;
DerivedMesh *org_dm = dm;
Scene *scene = md->scene;
const float frame = BKE_scene_frame_get(scene);
const float time = BKE_cachefile_time_offset(mcmd->cache_file, frame, FPS);
const char *err_str = NULL;
CacheFile *cache_file = mcmd->cache_file;
BKE_cachefile_ensure_handle(G.main, cache_file);
if (!mcmd->reader) {
mcmd->reader = CacheReader_open_alembic_object(cache_file->handle,
NULL,
ob,
mcmd->object_path);
if (!mcmd->reader) {
modifier_setError(md, "Could not create Alembic reader for file %s", cache_file->filepath);
return dm;
}
}
if (me != NULL) {
MVert *mvert = dm->getVertArray(dm);
MEdge *medge = dm->getEdgeArray(dm);
MPoly *mpoly = dm->getPolyArray(dm);
if ((me->mvert == mvert) || (me->medge == medge) || (me->mpoly == mpoly)) {
/* We need to duplicate data here, otherwise we'll modify org mesh, see T51701. */
dm = CDDM_copy(dm);
}
}
DerivedMesh *result = ABC_read_mesh(mcmd->reader,
ob,
dm,
time,
&err_str,
mcmd->read_flag);
if (err_str) {
modifier_setError(md, "%s", err_str);
}
if (!ELEM(result, NULL, dm) && (dm != org_dm)) {
dm->release(dm);
dm = org_dm;
}
return result ? result : dm;
#else
return dm;
UNUSED_VARS(md, ob);
#endif
}
static bool dependsOnTime(ModifierData *md)
{
UNUSED_VARS(md);
return true;
}
static void foreachIDLink(ModifierData *md, Object *ob,
IDWalkFunc walk, void *userData)
{
MeshSeqCacheModifierData *mcmd = (MeshSeqCacheModifierData *) md;
walk(userData, ob, (ID **)&mcmd->cache_file, IDWALK_CB_USER);
}
static void updateDepsgraph(ModifierData *md,
struct Main *bmain,
struct Scene *scene,
Object *ob,
struct DepsNodeHandle *node)
{
MeshSeqCacheModifierData *mcmd = (MeshSeqCacheModifierData *) md;
if (mcmd->cache_file != NULL) {
DEG_add_object_cache_relation(node, mcmd->cache_file, DEG_OB_COMP_CACHE, "Mesh Cache File");
}
UNUSED_VARS(bmain, scene, ob);
}
ModifierTypeInfo modifierType_MeshSequenceCache = {
/* name */ "Mesh Sequence Cache",
/* structName */ "MeshSeqCacheModifierData",
/* structSize */ sizeof(MeshSeqCacheModifierData),
/* type */ eModifierTypeType_Constructive,
/* flags */ eModifierTypeFlag_AcceptsMesh |
eModifierTypeFlag_AcceptsCVs,
/* copyData */ copyData,
/* deformVerts */ NULL,
/* deformMatrices */ NULL,
/* deformVertsEM */ NULL,
/* deformMatricesEM */ NULL,
/* applyModifier */ applyModifier,
/* applyModifierEM */ NULL,
/* initData */ initData,
/* requiredDataMask */ NULL,
/* freeData */ freeData,
/* isDisabled */ isDisabled,
/* updateDepsgraph */ updateDepsgraph,
/* dependsOnTime */ dependsOnTime,
/* dependsOnNormals */ NULL,
/* foreachObjectLink */ NULL,
/* foreachIDLink */ foreachIDLink,
/* foreachTexLink */ NULL,
};
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