141 lines
4.4 KiB
C
141 lines
4.4 KiB
C
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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#ifndef __BKE_EFFECT_H__
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#define __BKE_EFFECT_H__
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/** \file BKE_effect.h
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* \ingroup bke
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* \since March 2001
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* \author nzc
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*/
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#include "DNA_modifier_types.h"
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struct Object;
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struct Scene;
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struct Effect;
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struct ListBase;
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struct Particle;
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struct Group;
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struct RNG;
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struct ParticleSimulationData;
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struct ParticleData;
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struct ParticleKey;
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struct EffectorWeights *BKE_add_effector_weights(struct Group *group);
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struct PartDeflect *object_add_collision_fields(int type);
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/* Input to effector code */
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typedef struct EffectedPoint {
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float *loc;
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float *vel;
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float *ave; /* angular velocity for particles with dynamic rotation */
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float *rot; /* rotation quaternion for particles with dynamic rotation */
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float vel_to_frame;
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float vel_to_sec;
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/* only for particles */
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float size, charge;
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unsigned int flag;
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int index;
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struct ParticleSystem *psys; /* particle system the point belongs to */
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} EffectedPoint;
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typedef struct GuideEffectorData {
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float vec_to_point[3];
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float strength;
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} GuideEffectorData;
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typedef struct EffectorData {
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/* Effector point */
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float loc[3];
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float nor[3];
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float vel[3];
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float vec_to_point[3];
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float distance, falloff;
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/* only for effector particles */
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float size, charge;
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/* only for vortex effector with surface falloff */
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float nor2[3], vec_to_point2[3];
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int *index; /* point index */
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} EffectorData;
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/* used for calculating the effector force */
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typedef struct EffectorCache {
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struct EffectorCache *next, *prev;
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struct Scene *scene;
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struct Object *ob;
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struct ParticleSystem *psys;
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struct SurfaceModifierData *surmd;
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struct PartDeflect *pd;
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/* precalculated for guides */
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struct GuideEffectorData *guide_data;
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float guide_loc[4], guide_dir[3], guide_radius;
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float velocity[3];
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float frame;
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int flag;
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} EffectorCache;
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void free_partdeflect(struct PartDeflect *pd);
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struct ListBase *pdInitEffectors(struct Scene *scene, struct Object *ob_src, struct ParticleSystem *psys_src, struct EffectorWeights *weights);
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void pdEndEffectors(struct ListBase **effectors);
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void pdDoEffectors(struct ListBase *effectors, struct ListBase *colliders, struct EffectorWeights *weights, struct EffectedPoint *point, float *force, float *impulse);
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void pd_point_from_particle(struct ParticleSimulationData *sim, struct ParticleData *pa, struct ParticleKey *state, struct EffectedPoint *point);
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void pd_point_from_loc(struct Scene *scene, float *loc, float *vel, int index, struct EffectedPoint *point);
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void pd_point_from_soft(struct Scene *scene, float *loc, float *vel, int index, struct EffectedPoint *point);
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/* needed for boids */
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float effector_falloff(struct EffectorCache *eff, struct EffectorData *efd, struct EffectedPoint *point, struct EffectorWeights *weights);
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int closest_point_on_surface(SurfaceModifierData * surmd, const float co[3], float surface_co[3], float surface_nor[3], float surface_vel[3]);
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int get_effector_data(struct EffectorCache *eff, struct EffectorData *efd, struct EffectedPoint *point, int real_velocity);
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/* required for particle_system.c */
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//void do_physical_effector(struct EffectorData *eff, struct EffectorPoint *point, float *total_force);
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//float effector_falloff(struct EffectorData *eff, struct EffectorPoint *point, struct EffectorWeights *weights);
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/* EffectedPoint->flag */
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#define PE_WIND_AS_SPEED 1
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#define PE_DYNAMIC_ROTATION 2
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#define PE_USE_NORMAL_DATA 4
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/* EffectorData->flag */
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#define PE_VELOCITY_TO_IMPULSE 1
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#endif
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