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   1 /* glschool_alg.h, Copyright (c) 2005-2006 David C. Lambert <dcl@panix.com>
   2  *
   3  * Permission to use, copy, modify, distribute, and sell this software and its
   4  * documentation for any purpose is hereby granted without fee, provided that
   5  * the above copyright notice appear in all copies and that both that
   6  * copyright notice and this permission notice appear in supporting
   7  * documentation.  No representations are made about the suitability of this
   8  * software for any purpose.  It is provided "as is" without express or
   9  * implied warranty.
  10  */
  11 #ifndef __GLSCHOOL_ALG_H__
  12 #define __GLSCHOOL_ALG_H__
  13
  14 typedef struct {
  15         double  mins[3];
  16         double  maxs[3];
  17 } BBox;
  18
  19 #define BBOX_XMIN(b)            ((b)->mins[0])
  20 #define BBOX_YMIN(b)            ((b)->mins[1])
  21 #define BBOX_ZMIN(b)            ((b)->mins[2])
  22 #define BBOX_MINS(b)            ((b)->mins)
  23 #define BBOX_IMIN(b, i)         ((b)->mins[(i)])
  24
  25 #define BBOX_XMAX(b)            ((b)->maxs[0])
  26 #define BBOX_YMAX(b)            ((b)->maxs[1])
  27 #define BBOX_ZMAX(b)            ((b)->maxs[2])
  28 #define BBOX_MAXS(b)            ((b)->maxs)
  29 #define BBOX_IMAX(b, i)         ((b)->maxs[(i)])
  30
  31 #define BBOX_IMID(b, i)         (((b)->maxs[(i)] + (b)->mins[(i)])/2.0)
  32 #define BBOX_IRANGE(b, i)       ((b)->maxs[(i)] - (b)->mins[(i)])
  33
  34 typedef struct {
  35         double                  pos[3];
  36         double                  vel[3];
  37         double                  accel[3];
  38         double                  oldVel[3];
  39         double                  magic[3];
  40         double                  avgVel[3];
  41 } Fish;
  42
  43 #define FISH_POS(f)                     ((f)->pos)
  44 #define FISH_X(f)                       ((f)->pos[0])
  45 #define FISH_Y(f)                       ((f)->pos[1])
  46 #define FISH_Z(f)                       ((f)->pos[2])
  47
  48 #define FISH_VEL(f)                     ((f)->vel)
  49 #define FISH_VX(f)                      ((f)->vel[0])
  50 #define FISH_VY(f)                      ((f)->vel[1])
  51 #define FISH_VZ(f)                      ((f)->vel[2])
  52
  53 #define FISH_ACC(f)                     ((f)->accel)
  54 #define FISH_MAGIC(f)           ((f)->magic)
  55 #define FISH_OLDVEL(f)          ((f)->oldVel)
  56 #define FISH_AVGVEL(f)          ((f)->avgVel)
  57 #define FISH_IPOS(f, i)         ((f)->pos[(i)])
  58 #define FISH_IVEL(f, i)         ((f)->vel[(i)])
  59 #define FISH_IACC(f, i)         ((f)->accel[(i)])
  60 #define FISH_IMAGIC(f, i)       ((f)->magic[(i)])
  61 #define FISH_IOLDVEL(f, i)      ((f)->oldVel[(i)])
  62 #define FISH_IAVGVEL(f, i)      ((f)->avgVel[(i)])
  63
  64 typedef struct {
  65         int                     nFish;
  66         double          maxVel;
  67         double          minVel;
  68         double          distExp;
  69         double          momentum;
  70         double          accLimit;
  71         double          minRadius;
  72         double          minRadiusExp;
  73         double          avoidFact;
  74         double          matchFact;
  75         double          centerFact;
  76         double          targetFact;
  77         double          distComp;
  78         double          goal[3];
  79         double          boxMids[3];
  80         double          boxRanges[3];
  81         BBox            theBox;
  82         Fish            *theFish;
  83 } School;
  84
  85 #define SCHOOL_NFISH(s)                 ((s)->nFish)
  86 #define SCHOOL_MAXVEL(s)                ((s)->maxVel)
  87 #define SCHOOL_MINVEL(s)                ((s)->minVel)
  88 #define SCHOOL_DISTEXP(s)               ((s)->distExp)
  89 #define SCHOOL_MOMENTUM(s)              ((s)->momentum)
  90 #define SCHOOL_ACCLIMIT(s)              ((s)->accLimit)
  91 #define SCHOOL_MINRADIUS(s)             ((s)->minRadius)
  92 #define SCHOOL_MINRADIUSEXP(s)  ((s)->minRadiusExp)
  93 #define SCHOOL_MATCHFACT(s)             ((s)->matchFact)
  94 #define SCHOOL_AVOIDFACT(s)             ((s)->avoidFact)
  95 #define SCHOOL_CENTERFACT(s)    ((s)->centerFact)
  96 #define SCHOOL_TARGETFACT(s)    ((s)->targetFact)
  97 #define SCHOOL_DISTCOMP(s)              ((s)->distComp)
  98 #define SCHOOL_GOAL(s)                  ((s)->goal)
  99 #define SCHOOL_IGOAL(s,i)               ((s)->goal[(i)])
 100 #define SCHOOL_BBMINS(s)                ((s)->bbox.mins)
 101 #define SCHOOL_BBMAXS(s)                ((s)->bbox.maxs)
 102 #define SCHOOL_BBMIDS(s)                ((s)->boxMids)
 103 #define SCHOOL_IMID(s,i)                ((s)->boxMids[(i)])
 104 #define SCHOOL_BBRANGES(s)              ((s)->boxRanges)
 105 #define SCHOOL_IRANGE(s,i)              ((s)->boxRanges[(i)])
 106 #define SCHOOL_BBOX(s)                  ((s)->theBox)
 107 #define SCHOOL_FISHES(s)                ((s)->theFish)
 108 #define SCHOOL_IFISH(s,i)               ((s)->theFish[i])
 109
 110 extern void             glschool_initFishes(School *);
 111 extern void             glschool_initFish(Fish *, double *, double *);
 112
 113 extern void             glschool_applyMovements(School *);
 114 /* extern void          applyFishMovements(Fish *, BBox *, double, double, double); */
 115
 116 extern void             glschool_freeSchool(School *);
 117 extern School           *glschool_initSchool(int, double, double, double, double, double, double, double, double, double, double, double);
 118
 119 extern void             glschool_newGoal(School *);
 120 extern void             glschool_setBBox(School *, double, double, double, double, double, double);
 121
 122 extern void             glschool_computeAccelerations(School *);
 123 extern double           glschool_computeNormalAndThetaToPlusZ(double *, double *);
 124 int                     glschool_computeGroupVectors(School *, Fish *, double *, double *, double *);
 125
 126 #endif /* __GLSCHOOL_ALG_H__ */