BKE_animsys.h

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/* SPDX-FileCopyrightText: 2009 Blender Authors, Joshua Leung. All rights reserved.
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "BLI_bit_vector.hh"
#include "BLI_span.hh"
#include "BLI_sys_types.h" /* for bool */
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct AnimData;
struct BlendDataReader;
struct BlendWriter;
struct Depsgraph;
struct FCurve;
struct ID;
struct KS_Path;
struct KeyingSet;
struct LibraryForeachIDData;
struct ListBase;
struct Main;
struct NlaKeyframingContext;
struct PathResolvedRNA;
struct PointerRNA;
struct PropertyRNA;
struct bAction;
struct bActionGroup;
 
typedef struct AnimationEvalContext {
  /* For drivers, so that they have access to the dependency graph and the current view layer. See
   * #77086. */
  struct Depsgraph *depsgraph;
 
  /* FCurves and Drivers can be evaluated at a different time than the current scene time, for
   * example when evaluating NLA strips. This means that, even though the current time is stored in
   * the dependency graph, we need an explicit evaluation time. */
  float eval_time;
} AnimationEvalContext;
 
AnimationEvalContext BKE_animsys_eval_context_construct(struct Depsgraph *depsgraph,
                                                        float eval_time) ATTR_WARN_UNUSED_RESULT;
AnimationEvalContext BKE_animsys_eval_context_construct_at(
    const AnimationEvalContext *anim_eval_context, float eval_time) ATTR_WARN_UNUSED_RESULT;
 
/* ************************************* */
/* KeyingSets API */
 
struct KeyingSet *BKE_keyingset_add(
    struct ListBase *list, const char idname[], const char name[], short flag, short keyingflag);
 
struct KS_Path *BKE_keyingset_add_path(struct KeyingSet *ks,
                                       struct ID *id,
                                       const char group_name[],
                                       const char rna_path[],
                                       int array_index,
                                       short flag,
                                       short groupmode);
 
struct KS_Path *BKE_keyingset_find_path(struct KeyingSet *ks,
                                        struct ID *id,
                                        const char group_name[],
                                        const char rna_path[],
                                        int array_index,
                                        int group_mode);
 
/* Copy all KeyingSets in the given list */
void BKE_keyingsets_copy(struct ListBase *newlist, const struct ListBase *list);
 
void BKE_keyingsets_foreach_id(struct LibraryForeachIDData *data,
                               const struct ListBase *keyingsets);
 
/* Free the given Keying Set path */
void BKE_keyingset_free_path(struct KeyingSet *ks, struct KS_Path *ksp);
 
/* Free data for KeyingSet but not set itself */
void BKE_keyingset_free_paths(struct KeyingSet *ks);
 
/* Free all the KeyingSets in the given list */
void BKE_keyingsets_free(struct ListBase *list);
 
void BKE_keyingsets_blend_write(struct BlendWriter *writer, struct ListBase *list);
void BKE_keyingsets_blend_read_data(struct BlendDataReader *reader, struct ListBase *list);
 
/* ************************************* */
/* Path Fixing API */
 
char *BKE_animsys_fix_rna_path_rename(struct ID *owner_id,
                                      char *old_path,
                                      const char *prefix,
                                      const char *oldName,
                                      const char *newName,
                                      int oldSubscript,
                                      int newSubscript,
                                      bool verify_paths);
 
void BKE_action_fix_paths_rename(struct ID *owner_id,
                                 struct bAction *act,
                                 const char *prefix,
                                 const char *oldName,
                                 const char *newName,
                                 int oldSubscript,
                                 int newSubscript,
                                 bool verify_paths);
 
void BKE_animdata_fix_paths_rename(struct ID *owner_id,
                                   struct AnimData *adt,
                                   struct ID *ref_id,
                                   const char *prefix,
                                   const char *oldName,
                                   const char *newName,
                                   int oldSubscript,
                                   int newSubscript,
                                   bool verify_paths);
 
void BKE_animdata_fix_paths_rename_all_ex(struct Main *bmain,
                                          struct ID *ref_id,
                                          const char *prefix,
                                          const char *oldName,
                                          const char *newName,
                                          int oldSubscript,
                                          int newSubscript,
                                          bool verify_paths);
 
void BKE_animdata_fix_paths_rename_all(struct ID *ref_id,
                                       const char *prefix,
                                       const char *oldName,
                                       const char *newName);
 
bool BKE_animdata_fix_paths_remove(struct ID *id, const char *prefix);
 
/* -------------------------------------- */
 
typedef struct AnimationBasePathChange {
  struct AnimationBasePathChange *next, *prev;
  const char *src_basepath;
  const char *dst_basepath;
} AnimationBasePathChange;
 
void BKE_animdata_transfer_by_basepath(struct Main *bmain,
                                       struct ID *srcID,
                                       struct ID *dstID,
                                       struct ListBase *basepaths);
 
/* ------------ NLA Keyframing --------------- */
 
typedef struct NlaKeyframingContext NlaKeyframingContext;
 
struct NlaKeyframingContext *BKE_animsys_get_nla_keyframing_context(
    struct ListBase *cache,
    struct PointerRNA *ptr,
    struct AnimData *adt,
    const struct AnimationEvalContext *anim_eval_context);
void BKE_animsys_nla_remap_keyframe_values(struct NlaKeyframingContext *context,
                                           struct PointerRNA *prop_ptr,
                                           struct PropertyRNA *prop,
                                           const blender::MutableSpan<float> values,
                                           int index,
                                           const struct AnimationEvalContext *anim_eval_context,
                                           bool *r_force_all,
                                           blender::BitVector<> &r_values_mask);
 
void BKE_animsys_free_nla_keyframing_context_cache(struct ListBase *cache);
 
/* ************************************* */
/* Evaluation API */
 
/* ------------- Main API -------------------- */
/* In general, these ones should be called to do all animation evaluation */
 
/* Flags for recalc parameter, indicating which part to recalculate. */
typedef enum eAnimData_Recalc {
  ADT_RECALC_DRIVERS = (1 << 0),
  ADT_RECALC_ANIM = (1 << 1),
  ADT_RECALC_ALL = (ADT_RECALC_DRIVERS | ADT_RECALC_ANIM),
} eAnimData_Recalc;
 
bool BKE_animsys_rna_path_resolve(struct PointerRNA *ptr,
                                  const char *rna_path,
                                  int array_index,
                                  struct PathResolvedRNA *r_result);
bool BKE_animsys_read_from_rna_path(struct PathResolvedRNA *anim_rna, float *r_value);
bool BKE_animsys_write_to_rna_path(struct PathResolvedRNA *anim_rna, float value);
 
void BKE_animsys_evaluate_animdata(struct ID *id,
                                   struct AnimData *adt,
                                   const struct AnimationEvalContext *anim_eval_context,
                                   eAnimData_Recalc recalc,
                                   bool flush_to_original);
 
void BKE_animsys_evaluate_all_animation(struct Main *main,
                                        struct Depsgraph *depsgraph,
                                        float ctime);
 
/* ------------ Specialized API --------------- */
/* There are a few special tools which require these following functions. They are NOT to be used
 * for standard animation evaluation UNDER ANY CIRCUMSTANCES!
 *
 * i.e. Pose Library (PoseLib) uses some of these for selectively applying poses, but
 *      Particles/Sequencer performing funky time manipulation is not ok.
 */
 
void animsys_evaluate_action(struct PointerRNA *ptr,
                             struct bAction *act,
                             int32_t action_slot_handle,
                             const struct AnimationEvalContext *anim_eval_context,
                             bool flush_to_original);
 
/* Evaluate action, and blend the result into the current values (instead of overwriting fully). */
void animsys_blend_in_action(struct PointerRNA *ptr,
                             struct bAction *act,
                             int32_t action_slot_handle,
                             const AnimationEvalContext *anim_eval_context,
                             float blend_factor);
 
/* Evaluate Action Group */
void animsys_evaluate_action_group(struct PointerRNA *ptr,
                                   struct bAction *act,
                                   struct bActionGroup *agrp,
                                   const struct AnimationEvalContext *anim_eval_context);
 
/* ************************************* */
 
/* ------------ Evaluation API --------------- */
 
struct Depsgraph;
 
void BKE_animsys_eval_animdata(struct Depsgraph *depsgraph, struct ID *id);
void BKE_animsys_eval_driver(struct Depsgraph *depsgraph,
                             struct ID *id,
                             int driver_index,
                             struct FCurve *fcu_orig);
 
void BKE_animsys_update_driver_array(struct ID *id);
 
/* ************************************* */
 
#ifdef __cplusplus
}
#endif