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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2019 Blender Foundation. All rights reserved. */
/** \file
* \ingroup depsgraph
*/
#include "intern/eval/deg_eval_runtime_backup_animation.h"
#include "DNA_anim_types.h"
#include "BKE_animsys.h"
#include "RNA_access.h"
#include "RNA_types.h"
#include "intern/depsgraph.h"
namespace blender::deg {
namespace {
struct AnimatedPropertyStoreCalbackData {
AnimationBackup *backup;
/* ID which needs to be stored.
* Is used to check possibly nested IDs which f-curves are pointing to. */
ID *id;
PointerRNA id_pointer_rna;
};
void animated_property_store_cb(ID *id, FCurve *fcurve, void *data_v)
{
AnimatedPropertyStoreCalbackData *data = reinterpret_cast<AnimatedPropertyStoreCalbackData *>(
data_v);
if (fcurve->rna_path == nullptr || fcurve->rna_path[0] == '\0') {
return;
}
if (id != data->id) {
return;
}
/* Resolve path to the property. */
PathResolvedRNA resolved_rna;
if (!BKE_animsys_rna_path_resolve(
&data->id_pointer_rna, fcurve->rna_path, fcurve->array_index, &resolved_rna)) {
return;
}
/* Read property value. */
float value;
if (!BKE_animsys_read_from_rna_path(&resolved_rna, &value)) {
return;
}
data->backup->values_backup.append({fcurve->rna_path, fcurve->array_index, value});
}
} // namespace
AnimationValueBackup::AnimationValueBackup(const string &rna_path, int array_index, float value)
: rna_path(rna_path), array_index(array_index), value(value)
{
}
AnimationBackup::AnimationBackup(const Depsgraph *depsgraph)
{
meed_value_backup = !depsgraph->is_active;
reset();
}
void AnimationBackup::reset()
{
}
void AnimationBackup::init_from_id(ID *id)
{
/* NOTE: This animation backup nicely preserves values which are animated and
* are not touched by frame/depsgraph post_update handler.
*
* But it makes it impossible to have user edits to animated properties: for
* example, translation of object with animated location will not work with
* the current version of backup. */
return;
AnimatedPropertyStoreCalbackData data;
data.backup = this;
data.id = id;
RNA_id_pointer_create(id, &data.id_pointer_rna);
BKE_fcurves_id_cb(id, animated_property_store_cb, &data);
}
void AnimationBackup::restore_to_id(ID *id)
{
return;
PointerRNA id_pointer_rna;
RNA_id_pointer_create(id, &id_pointer_rna);
for (const AnimationValueBackup &value_backup : values_backup) {
/* Resolve path to the property.
*
* NOTE: Do it again (after storing), since the sub-data pointers might be
* changed after copy-on-write. */
PathResolvedRNA resolved_rna;
if (!BKE_animsys_rna_path_resolve(&id_pointer_rna,
value_backup.rna_path.c_str(),
value_backup.array_index,
&resolved_rna)) {
return;
}
/* Write property value. */
if (!BKE_animsys_write_to_rna_path(&resolved_rna, value_backup.value)) {
return;
}
}
}
} // namespace blender::deg
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