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/* SPDX-License-Identifier: GPL-2.0-or-later
* Copyright 2022 Blender Foundation. All rights reserved. */
/** \file
* \ingroup sequencer
*/
#include <string.h>
#include "DNA_anim_types.h"
#include "DNA_scene_types.h"
#include "DNA_sequence_types.h"
#include "BKE_animsys.h"
#include "BKE_fcurve.h"
#include "BLI_ghash.h"
#include "BLI_listbase.h"
#include "BLI_string.h"
#include "DEG_depsgraph.h"
#include "SEQ_animation.h"
static bool seq_animation_curves_exist(Scene *scene)
{
if (scene->adt == NULL || scene->adt->action == NULL ||
BLI_listbase_is_empty(&scene->adt->action->curves)) {
return false;
}
return true;
}
/* r_prefix + [" + escaped_name + "] + \0 */
#define SEQ_RNAPATH_MAXSTR ((30 + 2 + (SEQ_NAME_MAXSTR * 2) + 2) + 1)
static size_t sequencer_rna_path_prefix(char str[SEQ_RNAPATH_MAXSTR], const char *name)
{
char name_esc[SEQ_NAME_MAXSTR * 2];
BLI_str_escape(name_esc, name, sizeof(name_esc));
return BLI_snprintf_rlen(
str, SEQ_RNAPATH_MAXSTR, "sequence_editor.sequences_all[\"%s\"]", name_esc);
}
GSet *SEQ_fcurves_by_strip_get(const Sequence *seq, ListBase *fcurve_base)
{
char rna_path[SEQ_RNAPATH_MAXSTR];
size_t rna_path_len = sequencer_rna_path_prefix(rna_path, seq->name + 2);
/* Only allocate `fcurves` if it's needed as it's possible there is no animation for `seq`. */
GSet *fcurves = NULL;
LISTBASE_FOREACH (FCurve *, fcurve, fcurve_base) {
if (STREQLEN(fcurve->rna_path, rna_path, rna_path_len)) {
if (fcurves == NULL) {
fcurves = BLI_gset_ptr_new(__func__);
}
BLI_gset_add(fcurves, fcurve);
}
}
return fcurves;
}
#undef SEQ_RNAPATH_MAXSTR
void SEQ_offset_animdata(Scene *scene, Sequence *seq, int ofs)
{
if (!seq_animation_curves_exist(scene) || ofs == 0) {
return;
}
GSet *fcurves = SEQ_fcurves_by_strip_get(seq, &scene->adt->action->curves);
if (fcurves == NULL) {
return;
}
GSET_FOREACH_BEGIN (FCurve *, fcu, fcurves) {
unsigned int i;
if (fcu->bezt) {
for (i = 0; i < fcu->totvert; i++) {
BezTriple *bezt = &fcu->bezt[i];
bezt->vec[0][0] += ofs;
bezt->vec[1][0] += ofs;
bezt->vec[2][0] += ofs;
}
}
if (fcu->fpt) {
for (i = 0; i < fcu->totvert; i++) {
FPoint *fpt = &fcu->fpt[i];
fpt->vec[0] += ofs;
}
}
}
GSET_FOREACH_END();
BLI_gset_free(fcurves, NULL);
DEG_id_tag_update(&scene->adt->action->id, ID_RECALC_ANIMATION);
}
void SEQ_free_animdata(Scene *scene, Sequence *seq)
{
if (!seq_animation_curves_exist(scene)) {
return;
}
GSet *fcurves = SEQ_fcurves_by_strip_get(seq, &scene->adt->action->curves);
if (fcurves == NULL) {
return;
}
GSET_FOREACH_BEGIN (FCurve *, fcu, fcurves) {
BLI_remlink(&scene->adt->action->curves, fcu);
BKE_fcurve_free(fcu);
}
GSET_FOREACH_END();
BLI_gset_free(fcurves, NULL);
}
void SEQ_animation_backup_original(Scene *scene, ListBase *list)
{
if (scene->adt == NULL || scene->adt->action == NULL ||
BLI_listbase_is_empty(&scene->adt->action->curves)) {
return;
}
BLI_movelisttolist(list, &scene->adt->action->curves);
}
void SEQ_animation_restore_original(Scene *scene, ListBase *list)
{
if (scene->adt == NULL || scene->adt->action == NULL || BLI_listbase_is_empty(list)) {
return;
}
BLI_movelisttolist(&scene->adt->action->curves, list);
}
void SEQ_animation_duplicate(Scene *scene, Sequence *seq, ListBase *list)
{
if (BLI_listbase_is_empty(list)) {
return;
}
GSet *fcurves = SEQ_fcurves_by_strip_get(seq, list);
if (fcurves == NULL) {
return;
}
GSET_FOREACH_BEGIN (FCurve *, fcu, fcurves) {
FCurve *fcu_cpy = BKE_fcurve_copy(fcu);
BLI_addtail(&scene->adt->action->curves, fcu_cpy);
}
GSET_FOREACH_END();
BLI_gset_free(fcurves, NULL);
}
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