208 lines
7.8 KiB
C
208 lines
7.8 KiB
C
/**
|
|
* $Id$
|
|
*
|
|
* ***** 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*
|
|
* The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
|
|
* All rights reserved.
|
|
*
|
|
* Contributor(s): Joshua Leung (full recode)
|
|
*
|
|
* ***** END GPL LICENSE BLOCK *****
|
|
*/
|
|
|
|
#ifndef BKE_FCURVE_H
|
|
#define BKE_FCURVE_H
|
|
|
|
struct FCurve;
|
|
struct FModifier;
|
|
struct ChannelDriver;
|
|
struct DriverTarget;
|
|
|
|
struct BezTriple;
|
|
|
|
#include "DNA_curve_types.h"
|
|
|
|
/* ************** Keyframe Tools ***************** */
|
|
|
|
// XXX this stuff is defined in BKE_ipo.h too, so maybe skip for now?
|
|
typedef struct CfraElem {
|
|
struct CfraElem *next, *prev;
|
|
float cfra;
|
|
int sel;
|
|
} CfraElem;
|
|
|
|
void bezt_add_to_cfra_elem(ListBase *lb, struct BezTriple *bezt);
|
|
|
|
/* ************** F-Curve Drivers ***************** */
|
|
|
|
void fcurve_free_driver(struct FCurve *fcu);
|
|
struct ChannelDriver *fcurve_copy_driver(struct ChannelDriver *driver);
|
|
|
|
void driver_free_target(struct ChannelDriver *driver, struct DriverTarget *dtar);
|
|
struct DriverTarget *driver_add_new_target(struct ChannelDriver *driver);
|
|
|
|
float driver_get_target_value(struct ChannelDriver *driver, struct DriverTarget *dtar);
|
|
|
|
/* ************** F-Curve Modifiers *************** */
|
|
|
|
/* F-Curve Modifier Type-Info (fmi):
|
|
* This struct provides function pointers for runtime, so that functions can be
|
|
* written more generally (with fewer/no special exceptions for various modifiers).
|
|
*
|
|
* Callers of these functions must check that they actually point to something useful,
|
|
* as some constraints don't define some of these.
|
|
*
|
|
* Warning: it is not too advisable to reorder order of members of this struct,
|
|
* as you'll have to edit quite a few ($FMODIFIER_NUM_TYPES) of these
|
|
* structs.
|
|
*/
|
|
typedef struct FModifierTypeInfo {
|
|
/* admin/ident */
|
|
short type; /* FMODIFIER_TYPE_### */
|
|
short size; /* size in bytes of the struct */
|
|
short acttype; /* eFMI_Action_Types */
|
|
short requires; /* eFMI_Requirement_Flags */
|
|
char name[64]; /* name of modifier in interface */
|
|
char structName[64]; /* name of struct for SDNA */
|
|
|
|
/* data management function pointers - special handling */
|
|
/* free any data that is allocated separately (optional) */
|
|
void (*free_data)(struct FModifier *fcm);
|
|
/* copy any special data that is allocated separately (optional) */
|
|
void (*copy_data)(struct FModifier *fcm, struct FModifier *src);
|
|
/* set settings for data that will be used for FCuModifier.data (memory already allocated using MEM_callocN) */
|
|
void (*new_data)(void *mdata);
|
|
/* verifies that the modifier settings are valid */
|
|
void (*verify_data)(struct FModifier *fcm);
|
|
|
|
/* evaluation */
|
|
/* evaluate time that the modifier requires the F-Curve to be evaluated at */
|
|
float (*evaluate_modifier_time)(struct FCurve *fcu, struct FModifier *fcm, float cvalue, float evaltime);
|
|
/* evaluate the modifier for the given time and 'accumulated' value */
|
|
void (*evaluate_modifier)(struct FCurve *fcu, struct FModifier *fcm, float *cvalue, float evaltime);
|
|
} FModifierTypeInfo;
|
|
|
|
/* Values which describe the behaviour of a FModifier Type */
|
|
enum {
|
|
/* modifier only modifies values outside of data range */
|
|
FMI_TYPE_EXTRAPOLATION = 0,
|
|
/* modifier leaves data-points alone, but adjusts the interpolation between and around them */
|
|
FMI_TYPE_INTERPOLATION,
|
|
/* modifier only modifies the values of points (but times stay the same) */
|
|
FMI_TYPE_REPLACE_VALUES,
|
|
/* modifier generates a curve regardless of what came before */
|
|
FMI_TYPE_GENERATE_CURVE,
|
|
} eFMI_Action_Types;
|
|
|
|
/* Flags for the requirements of a FModifier Type */
|
|
enum {
|
|
/* modifier requires original data-points (kindof beats the purpose of a modifier stack?) */
|
|
FMI_REQUIRES_ORIGINAL_DATA = (1<<0),
|
|
/* modifier doesn't require on any preceeding data (i.e. it will generate a curve).
|
|
* Use in conjunction with FMI_TYPE_GENRATE_CURVE
|
|
*/
|
|
FMI_REQUIRES_NOTHING = (1<<1),
|
|
/* refer to modifier instance */
|
|
FMI_REQUIRES_RUNTIME_CHECK = (1<<2),
|
|
} eFMI_Requirement_Flags;
|
|
|
|
/* Function Prototypes for FModifierTypeInfo's */
|
|
FModifierTypeInfo *fmodifier_get_typeinfo(struct FModifier *fcm);
|
|
FModifierTypeInfo *get_fmodifier_typeinfo(int type);
|
|
|
|
/* ---------------------- */
|
|
|
|
struct FModifier *add_fmodifier(ListBase *modifiers, int type);
|
|
void copy_fmodifiers(ListBase *dst, ListBase *src);
|
|
void remove_fmodifier(ListBase *modifiers, struct FModifier *fcm);
|
|
void free_fmodifiers(ListBase *modifiers);
|
|
|
|
struct FModifier *find_active_fmodifier(ListBase *modifiers);
|
|
void set_active_fmodifier(ListBase *modifiers, struct FModifier *fcm);
|
|
|
|
short list_has_suitable_fmodifier(ListBase *modifiers, int mtype, short acttype);
|
|
|
|
float evaluate_time_fmodifiers(ListBase *modifiers, struct FCurve *fcu, float cvalue, float evaltime);
|
|
void evaluate_value_fmodifiers(ListBase *modifiers, struct FCurve *fcu, float *cvalue, float evaltime);
|
|
|
|
void fcurve_bake_modifiers(struct FCurve *fcu, int start, int end);
|
|
|
|
/* ************** F-Curves API ******************** */
|
|
|
|
/* -------- Data Managemnt -------- */
|
|
|
|
void free_fcurve(struct FCurve *fcu);
|
|
struct FCurve *copy_fcurve(struct FCurve *fcu);
|
|
|
|
void free_fcurves(ListBase *list);
|
|
void copy_fcurves(ListBase *dst, ListBase *src);
|
|
|
|
/* find matching F-Curve in the given list of F-Curves */
|
|
struct FCurve *list_find_fcurve(ListBase *list, const char rna_path[], const int array_index);
|
|
|
|
/* Binary search algorithm for finding where to 'insert' BezTriple with given frame number.
|
|
* Returns the index to insert at (data already at that index will be offset if replace is 0)
|
|
*/
|
|
int binarysearch_bezt_index(struct BezTriple array[], float frame, int arraylen, short *replace);
|
|
|
|
/* get the time extents for F-Curve */
|
|
void calc_fcurve_range(struct FCurve *fcu, float *min, float *max);
|
|
|
|
/* get the bounding-box extents for F-Curve */
|
|
void calc_fcurve_bounds(struct FCurve *fcu, float *xmin, float *xmax, float *ymin, float *ymax);
|
|
|
|
/* -------- Curve Sanity -------- */
|
|
|
|
void calchandles_fcurve(struct FCurve *fcu);
|
|
void testhandles_fcurve(struct FCurve *fcu);
|
|
void sort_time_fcurve(struct FCurve *fcu);
|
|
short test_time_fcurve(struct FCurve *fcu);
|
|
|
|
void correct_bezpart(float *v1, float *v2, float *v3, float *v4);
|
|
|
|
/* -------- Evaluation -------- */
|
|
|
|
/* evaluate fcurve */
|
|
float evaluate_fcurve(struct FCurve *fcu, float evaltime);
|
|
/* evaluate fcurve and store value */
|
|
void calculate_fcurve(struct FCurve *fcu, float ctime);
|
|
|
|
/* ************* F-Curve Samples API ******************** */
|
|
|
|
/* -------- Defines -------- */
|
|
|
|
/* Basic signature for F-Curve sample-creation function
|
|
* - fcu: the F-Curve being operated on
|
|
* - data: pointer to some specific data that may be used by one of the callbacks
|
|
*/
|
|
typedef float (*FcuSampleFunc)(struct FCurve *fcu, void *data, float evaltime);
|
|
|
|
/* ----- Sampling Callbacks ------ */
|
|
|
|
/* Basic sampling callback which acts as a wrapper for evaluate_fcurve() */
|
|
float fcurve_samplingcb_evalcurve(struct FCurve *fcu, void *data, float evaltime);
|
|
|
|
/* -------- Main Methods -------- */
|
|
|
|
/* Main API function for creating a set of sampled curve data, given some callback function
|
|
* used to retrieve the values to store.
|
|
*/
|
|
void fcurve_store_samples(struct FCurve *fcu, void *data, int start, int end, FcuSampleFunc sample_cb);
|
|
|
|
#endif /* BKE_FCURVE_H*/
|