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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.
*
* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): none yet.
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __BKE_EFFECT_H__
#define __BKE_EFFECT_H__
/** \file BKE_effect.h
* \ingroup bke
* \since March 2001
* \author nzc
*/
#include "DNA_modifier_types.h"
#include "BLI_utildefines.h"
struct Object;
struct Scene;
struct Effect;
struct ListBase;
struct Particle;
struct Group;
struct RNG;
struct ParticleSimulationData;
struct ParticleData;
struct ParticleKey;
struct EffectorWeights *BKE_add_effector_weights(struct Group *group);
struct PartDeflect *object_add_collision_fields(int type);
/* Input to effector code */
typedef struct EffectedPoint {
float *loc;
float *vel;
float *ave; /* angular velocity for particles with dynamic rotation */
float *rot; /* rotation quaternion for particles with dynamic rotation */
float vel_to_frame;
float vel_to_sec;
/* only for particles */
float size, charge;
unsigned int flag;
int index;
struct ParticleSystem *psys; /* particle system the point belongs to */
} EffectedPoint;
typedef struct GuideEffectorData {
float vec_to_point[3];
float strength;
} GuideEffectorData;
typedef struct EffectorData {
/* Effector point */
float loc[3];
float nor[3];
float vel[3];
float vec_to_point[3];
float distance, falloff;
/* only for effector particles */
float size, charge;
/* only for vortex effector with surface falloff */
float nor2[3], vec_to_point2[3];
int *index; /* point index */
} EffectorData;
/* used for calculating the effector force */
typedef struct EffectorCache {
struct EffectorCache *next, *prev;
struct Scene *scene;
struct Object *ob;
struct ParticleSystem *psys;
struct SurfaceModifierData *surmd;
struct PartDeflect *pd;
/* precalculated for guides */
struct GuideEffectorData *guide_data;
float guide_loc[4], guide_dir[3], guide_radius;
float velocity[3];
float frame;
int flag;
} EffectorCache;
void free_partdeflect(struct PartDeflect *pd);
struct ListBase *pdInitEffectors(struct Scene *scene, struct Object *ob_src, struct ParticleSystem *psys_src, struct EffectorWeights *weights, bool precalc);
void pdEndEffectors(struct ListBase **effectors);
void pdPrecalculateEffectors(struct ListBase *effectors);
void pdDoEffectors(struct ListBase *effectors, struct ListBase *colliders, struct EffectorWeights *weights, struct EffectedPoint *point, float *force, float *impulse);
void pd_point_from_particle(struct ParticleSimulationData *sim, struct ParticleData *pa, struct ParticleKey *state, struct EffectedPoint *point);
void pd_point_from_loc(struct Scene *scene, float *loc, float *vel, int index, struct EffectedPoint *point);
void pd_point_from_soft(struct Scene *scene, float *loc, float *vel, int index, struct EffectedPoint *point);
/* needed for boids */
float effector_falloff(struct EffectorCache *eff, struct EffectorData *efd, struct EffectedPoint *point, struct EffectorWeights *weights);
int closest_point_on_surface(SurfaceModifierData *surmd, const float co[3], float surface_co[3], float surface_nor[3], float surface_vel[3]);
int get_effector_data(struct EffectorCache *eff, struct EffectorData *efd, struct EffectedPoint *point, int real_velocity);
/* required for particle_system.c */
//void do_physical_effector(struct EffectorData *eff, struct EffectorPoint *point, float *total_force);
//float effector_falloff(struct EffectorData *eff, struct EffectorPoint *point, struct EffectorWeights *weights);
/* EffectedPoint->flag */
#define PE_WIND_AS_SPEED 1
#define PE_DYNAMIC_ROTATION 2
#define PE_USE_NORMAL_DATA 4
/* EffectorData->flag */
#define PE_VELOCITY_TO_IMPULSE 1
/* ======== Simulation Debugging ======== */
#define SIM_DEBUG_HASH_BASE 5381
unsigned int BKE_sim_debug_data_hash(int i);
unsigned int BKE_sim_debug_data_hash_combine(unsigned int kx, unsigned int ky);
/* _VA_SIM_DEBUG_HASH#(i, ...): combined hash value of multiple integers */
/* internal helpers*/
#define _VA_SIM_DEBUG_HASH1(a) \
(BKE_sim_debug_data_hash(a))
#define _VA_SIM_DEBUG_HASH2(a, b) \
(BKE_sim_debug_data_hash_combine(BKE_sim_debug_data_hash(a), _VA_SIM_DEBUG_HASH1(b)))
#define _VA_SIM_DEBUG_HASH3(a, b, c) \
(BKE_sim_debug_data_hash_combine(BKE_sim_debug_data_hash(a), _VA_SIM_DEBUG_HASH2(b, c)))
#define _VA_SIM_DEBUG_HASH4(a, b, c, d) \
(BKE_sim_debug_data_hash_combine(BKE_sim_debug_data_hash(a), _VA_SIM_DEBUG_HASH3(b, c, d)))
#define _VA_SIM_DEBUG_HASH5(a, b, c, d, e) \
(BKE_sim_debug_data_hash_combine(BKE_sim_debug_data_hash(a), _VA_SIM_DEBUG_HASH4(b, c, d, e)))
#define _VA_SIM_DEBUG_HASH6(a, b, c, d, e, f) \
(BKE_sim_debug_data_hash_combine(BKE_sim_debug_data_hash(a), _VA_SIM_DEBUG_HASH5(b, c, d, e, f)))
#define _VA_SIM_DEBUG_HASH7(a, b, c, d, e, f, g) \
(BKE_sim_debug_data_hash_combine(BKE_sim_debug_data_hash(a), _VA_SIM_DEBUG_HASH6(b, c, d, e, f, g)))
#define _VA_SIM_DEBUG_HASH8(a, b, c, d, e, f, g, h) \
(BKE_sim_debug_data_hash_combine(BKE_sim_debug_data_hash(a), _VA_SIM_DEBUG_HASH7(b, c, d, e, f, g, h)))
#define SIM_DEBUG_HASH(...) VA_NARGS_CALL_OVERLOAD(_VA_SIM_DEBUG_HASH, __VA_ARGS__)
typedef struct SimDebugElement {
unsigned int category_hash;
unsigned int hash;
int type;
float color[3];
float v1[3], v2[3];
} SimDebugElement;
typedef enum eSimDebugElement_Type {
SIM_DEBUG_ELEM_DOT,
SIM_DEBUG_ELEM_CIRCLE,
SIM_DEBUG_ELEM_LINE,
SIM_DEBUG_ELEM_VECTOR,
} eSimDebugElement_Type;
typedef struct SimDebugData {
struct GHash *gh;
} SimDebugData;
extern SimDebugData *_sim_debug_data;
void BKE_sim_debug_data_set_enabled(bool enable);
bool BKE_sim_debug_data_get_enabled(void);
void BKE_sim_debug_data_free(void);
void BKE_sim_debug_data_add_element(int type, const float v1[3], const float v2[3],
float r, float g, float b, const char *category, unsigned int hash);
void BKE_sim_debug_data_remove_element(unsigned int hash);
#define BKE_sim_debug_data_add_dot(p, r, g, b, category, ...) { \
const float v2[3] = { 0.0f, 0.0f, 0.0f }; \
BKE_sim_debug_data_add_element(SIM_DEBUG_ELEM_DOT, p, v2, r, g, b, category, SIM_DEBUG_HASH(__VA_ARGS__)); \
}
#define BKE_sim_debug_data_add_circle(p, radius, r, g, b, category, ...) { \
const float v2[3] = { radius, 0.0f, 0.0f }; \
BKE_sim_debug_data_add_element(SIM_DEBUG_ELEM_CIRCLE, p, v2, r, g, b, category, SIM_DEBUG_HASH(__VA_ARGS__)); \
}
#define BKE_sim_debug_data_add_line(p1, p2, r, g, b, category, ...) { \
BKE_sim_debug_data_add_element(SIM_DEBUG_ELEM_LINE, p1, p2, r, g, b, category, SIM_DEBUG_HASH(__VA_ARGS__)); \
}
#define BKE_sim_debug_data_add_vector(p, d, r, g, b, category, ...) { \
BKE_sim_debug_data_add_element(SIM_DEBUG_ELEM_VECTOR, p, d, r, g, b, category, SIM_DEBUG_HASH(__VA_ARGS__)); \
}
#define BKE_sim_debug_data_remove(...) \
BKE_sim_debug_data_remove_element(SIM_DEBUG_HASH(__VA_ARGS__))
void BKE_sim_debug_data_clear(void);
void BKE_sim_debug_data_clear_category(const char *category);
#endif
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