57d1a1eac2
- For newtonian particles a "self effect" button in particle extras makes the particles be effected by themselves if a particle effector is defined for this system, currently this is a brute force method so things start getting slow with more than ~100 particles, but this will hopefully change in the future. - Two new effector types: charge and a Lennard-Jones potential based force (inter-molecular forces for example). -Charge is similar to spherical field except it changes behavior (attract/repulse) based on the effected particles charge field (negative/positive) like real particles with a charge. -The Lennard-Jones field is a very short range force with a behavior determined by the sizes of the effector and effected particle. At a distance smaller than the combined sizes the field is very repulsive and after that distance it's attractive. It tries to keep the particles at an equilibrium distance from each other. Particles need to be at a close proximity to each other to be effected by this field at all. - Particle systems can now have two effector fields (two slots in the fields panel). This allows to create particles which for example have both a charge and a Lennard-Jones potential.
231 lines
6.6 KiB
C
231 lines
6.6 KiB
C
/**
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*
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* $Id$
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*
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2004-2005 by Blender Foundation
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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 DNA_OBJECT_FORCE_H
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#define DNA_OBJECT_FORCE_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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typedef struct PartDeflect {
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short deflect; /* Deflection flag - does mesh deflect particles*/
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short forcefield; /* Force field type, do the vertices attract / repel particles ? */
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short flag; /* general settings flag */
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short falloff; /* fall-off type*/
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float pdef_damp; /* Damping factor for particle deflection */
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float pdef_rdamp; /* Random element of damping for deflection */
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float pdef_perm; /* Chance of particle passing through mesh */
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float pdef_frict; /* Friction factor for particle deflection */
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float pdef_rfrict; /* Random element of friction for deflection */
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float f_strength; /* The strength of the force (+ or - ) */
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float f_power; /* The power law - real gravitation is 2 (square) */
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float f_dist;
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float f_damp; /* The dampening factor, currently only for harmonic force */
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float maxdist; /* if indicated, use this maximum */
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float mindist; /* if indicated, use this minimum */
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float maxrad; /* radial versions of above */
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float minrad;
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float f_power_r; /* radial fall-off power*/
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float pdef_sbdamp; /* Damping factor for softbody deflection */
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float pdef_sbift; /* inner face thickness for softbody deflection */
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float pdef_sboft; /* outer face thickness for softbody deflection */
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/* variables for guide curve */
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float clump_fac, clump_pow;
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float kink_freq, kink_shape, kink_amp, free_end;
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float tex_nabla;
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short tex_mode, kink, kink_axis, rt2;
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struct Tex *tex; /* Texture of the texture effector */
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struct RNG *rng; /* random noise generator for e.g. wind */
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float f_noise; /* noise of force (currently used for wind) */
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int pad;
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} PartDeflect;
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typedef struct PointCache {
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int flag; /* generic flag */
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int simframe; /* current frame of simulation (only if SIMULATION_VALID) */
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int startframe; /* simulation start frame */
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int endframe; /* simulation end frame */
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int editframe; /* frame being edited (runtime only) */
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} PointCache;
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typedef struct SBVertex {
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float vec[4];
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} SBVertex;
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typedef struct SoftBody {
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struct ParticleSystem *particles; /* particlesystem softbody */
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/* dynamic data */
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int totpoint, totspring;
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struct BodyPoint *bpoint; /* not saved in file */
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struct BodySpring *bspring; /* not saved in file */
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float pad;
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/* part of UI: */
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/* general options */
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float nodemass; /* softbody mass of *vertex* */
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float grav; /* softbody amount of gravitaion to apply */
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float mediafrict; /* friction to env */
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float rklimit; /* error limit for ODE solver */
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float physics_speed;/* user control over simulation speed */
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/* goal */
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float goalspring; /* softbody goal springs */
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float goalfrict; /* softbody goal springs friction */
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float mingoal; /* quick limits for goal */
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float maxgoal;
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float defgoal; /* default goal for vertices without vgroup */
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short vertgroup; /* index starting at 1 */
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short fuzzyness; /* */
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/* springs */
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float inspring; /* softbody inner springs */
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float infrict; /* softbody inner springs friction */
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/* baking */
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int sfra, efra;
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int interval;
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short local, solverflags; /* local==1: use local coords for baking */
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/* -- these must be kept for backwards compatibility -- */
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SBVertex **keys; /* array of size totpointkey */
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int totpointkey, totkey; /* if totpointkey != totpoint or totkey!- (efra-sfra)/interval -> free keys */
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/* ---------------------------------------------------- */
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float secondspring;
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/* self collision*/
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float colball; /* fixed collision ball size if > 0 */
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float balldamp; /* cooling down collision response */
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float ballstiff; /* pressure the ball is loaded with */
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short sbc_mode;
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short aeroedge,
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minloops,
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maxloops,
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choke,
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solver_ID,
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plastic,springpreload
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;
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struct SBScratch *scratch; /* scratch pad/cache on live time not saved in file */
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float shearstiff;
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float inpush;
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struct PointCache *pointcache;
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} SoftBody;
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/* pd->forcefield: Effector Fields types */
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#define PFIELD_FORCE 1
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#define PFIELD_VORTEX 2
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#define PFIELD_MAGNET 3
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#define PFIELD_WIND 4
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#define PFIELD_GUIDE 5
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#define PFIELD_TEXTURE 6
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#define PFIELD_HARMONIC 7
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#define PFIELD_CHARGE 8
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#define PFIELD_LENNARDJ 9
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/* pd->flag: various settings */
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#define PFIELD_USEMAX 1
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#define PDEFLE_DEFORM 2
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#define PFIELD_GUIDE_PATH_ADD 4
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#define PFIELD_PLANAR 8
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#define PDEFLE_KILL_PART 16
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#define PFIELD_POSZ 32
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#define PFIELD_TEX_OBJECT 64
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#define PFIELD_TEX_2D 128
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#define PFIELD_USEMIN 256
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#define PFIELD_USEMAXR 512
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#define PFIELD_USEMINR 1024
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#define PFIELD_TEX_ROOTCO 2048
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/* pd->falloff */
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#define PFIELD_FALL_SPHERE 0
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#define PFIELD_FALL_TUBE 1
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#define PFIELD_FALL_CONE 2
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//reserved for near future
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//#define PFIELD_FALL_INSIDE 3
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/* pd->tex_mode */
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#define PFIELD_TEX_RGB 0
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#define PFIELD_TEX_GRAD 1
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#define PFIELD_TEX_CURL 2
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/* pointcache->flag */
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#define PTCACHE_BAKED 1
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#define PTCACHE_OUTDATED 2
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#define PTCACHE_SIMULATION_VALID 4
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#define PTCACHE_BAKING 8
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#define PTCACHE_BAKE_EDIT 16
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#define PTCACHE_BAKE_EDIT_ACTIVE 32
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/* ob->softflag */
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#define OB_SB_ENABLE 1
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#define OB_SB_GOAL 2
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#define OB_SB_EDGES 4
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#define OB_SB_QUADS 8
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#define OB_SB_POSTDEF 16
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// #define OB_SB_REDO 32
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// #define OB_SB_BAKESET 64
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// #define OB_SB_BAKEDO 128
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// #define OB_SB_RESET 256
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#define OB_SB_SELF 512
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#define OB_SB_FACECOLL 1024
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#define OB_SB_EDGECOLL 2048
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#define OB_SB_COLLFINAL 4096
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//#define OB_SB_PROTECT_CACHE 8192
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#define OB_SB_AERO_ANGLE 16384
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/* sb->solverflags */
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#define SBSO_MONITOR 1
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#define SBSO_OLDERR 2
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/* sb->sbc_mode */
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#define SBC_MODE_MANUAL 0
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#define SBC_MODE_AVG 1
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#define SBC_MODE_MIN 2
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#define SBC_MODE_MAX 3
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#define SBC_MODE_AVGMINMAX 4
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#ifdef __cplusplus
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}
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#endif
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#endif
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