git.hungrycats.org Git - xscreensaver/blob - hacks/glx/glschool.c

   1 /* glschool.c, 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 #include "xlockmore.h"
  12 #include "glschool.h"
  13
  14 #define sws_opts                        xlockmore_opts
  15 #define DEFAULTS    "*delay:            20000       \n" \
  16                     "*showFPS:      False       \n" \
  17                     "*wireframe:    False       \n" \
  18
  19 #define refresh_glschool                (0)
  20 #define release_glschool                (0)
  21 #define glschool_handle_event   (0)
  22
  23 #undef countof
  24 #define countof(x) (sizeof((x))/sizeof((*x)))
  25
  26 #define DEF_NFISH       "100"
  27 #define DEF_FOG         "False"
  28 #define DEF_DRAWBBOX    "True"
  29 #define DEF_DRAWGOAL    "False"
  30 #define DEF_GOALCHGF    "50"
  31 #define DEF_MAXVEL      "7.0"
  32 #define DEF_MINVEL      "1.0"
  33 #define DEF_ACCLIMIT    "8.0"
  34 #define DEF_DISTEXP     "2.2"
  35 #define DEF_AVOIDFACT   "1.5"
  36 #define DEF_MATCHFACT   "0.15"
  37 #define DEF_CENTERFACT  "0.1"
  38 #define DEF_TARGETFACT  "80"
  39 #define DEF_MINRADIUS   "30.0"
  40 #define DEF_MOMENTUM    "0.9"
  41 #define DEF_DISTCOMP    "10.0"
  42
  43 static int                      NFish;
  44 static Bool                     DoFog;
  45 static Bool                     DoDrawBBox;
  46 static Bool                     DoDrawGoal;
  47 static int                      GoalChgFreq;
  48 static float            MinVel;
  49 static float            MaxVel;
  50 static float            DistExp;
  51 static float            AccLimit;
  52 static float            AvoidFact;
  53 static float            MatchFact;
  54 static float            TargetFact;
  55 static float            CenterFact;
  56 static float            MinRadius;
  57 static float            Momentum;
  58 static float            DistComp;
  59
  60 static XrmOptionDescRec opts[] = {
  61         { "-nfish",             ".nfish",               XrmoptionSepArg, 0 },
  62         { "-fog",               ".fog",                 XrmoptionNoArg, "True" },
  63         { "+fog",               ".fog",                 XrmoptionNoArg, "False" },
  64         { "-drawgoal",  ".drawgoal",    XrmoptionNoArg, "True" },
  65         { "+drawgoal",  ".drawgoal",    XrmoptionNoArg, "False" },
  66         { "-drawbbox",  ".drawbbox",    XrmoptionNoArg, "True" },
  67         { "+drawbbox",  ".drawbbox",    XrmoptionNoArg, "False" },
  68         { "-goalchgf",  ".goalchgf",    XrmoptionSepArg, 0 },
  69         { "-maxvel",    ".maxvel",              XrmoptionSepArg, 0 },
  70         { "-minvel",    ".minvel",              XrmoptionSepArg, 0 },
  71         { "-acclimit",  ".acclimit",    XrmoptionSepArg, 0 },
  72         { "-distexp",   ".distexp",             XrmoptionSepArg, 0 },
  73         { "-avoidfact", ".avoidfact",   XrmoptionSepArg, 0 },
  74         { "-matchfact", ".matchfact",   XrmoptionSepArg, 0 },
  75         { "-centerfact",".centerfact",  XrmoptionSepArg, 0 },
  76         { "-targetfact",".targetfact",  XrmoptionSepArg, 0 },
  77         { "-minradius", ".minradius",   XrmoptionSepArg, 0 },
  78         { "-distcomp",  ".distcomp",    XrmoptionSepArg, 0 },
  79         { "-momentum",  ".momentum",    XrmoptionSepArg, 0 },
  80 };
  81
  82 static argtype vars[] = {
  83         {&NFish,                "nfish",                "NFish",                DEF_NFISH, t_Int},
  84         {&DoFog,                "fog",                  "DoFog",                DEF_FOG, t_Bool},
  85         {&DoDrawBBox,   "drawbbox",             "DoDrawBBox",   DEF_DRAWBBOX, t_Bool},
  86         {&DoDrawGoal,   "drawgoal",             "DoDrawGoal",   DEF_DRAWGOAL, t_Bool},
  87         {&GoalChgFreq,  "goalchgf",             "GoalChgFreq",  DEF_GOALCHGF,  t_Int},
  88         {&MaxVel,               "maxvel",               "MaxVel",               DEF_MAXVEL,  t_Float},
  89         {&MinVel,               "minvel",               "MinVel",               DEF_MINVEL,     t_Float},
  90         {&AccLimit,             "acclimit",             "AccLimit",             DEF_ACCLIMIT,  t_Float},
  91         {&DistExp,              "distexp",              "DistExp",              DEF_DISTEXP,  t_Float},
  92         {&AvoidFact,    "avoidfact",    "AvoidFact",    DEF_AVOIDFACT,  t_Float},
  93         {&MatchFact,    "matchfact",    "MatchFact",    DEF_MATCHFACT,  t_Float},
  94         {&CenterFact,   "centerfact",   "CenterFact",   DEF_CENTERFACT,  t_Float},
  95         {&TargetFact,   "targetfact",   "TargetFact",   DEF_TARGETFACT,  t_Float},
  96         {&MinRadius,    "minradius",    "MinRadius",    DEF_MINRADIUS,  t_Float},
  97         {&Momentum,             "momentum",             "Momentum",             DEF_MOMENTUM,  t_Float},
  98         {&DistComp,             "distcomp",             "DistComp",             DEF_DISTCOMP,  t_Float},
  99 };
 100
 101 ENTRYPOINT ModeSpecOpt glschool_opts = {countof(opts), opts, countof(vars), vars, NULL};
 102
 103 typedef struct {
 104         int                     nColors;
 105         int                     rotCounter;
 106         int                     goalCounter;
 107         Bool            drawGoal;
 108         Bool            drawBBox;
 109         GLuint          bboxList;
 110         GLuint          goalList;
 111         GLuint          fishList;
 112         int             fish_polys, box_polys;
 113         XColor          *colors;
 114         School          *school;
 115         GLXContext      *context;
 116 } glschool_configuration;
 117
 118 static glschool_configuration   *scs = NULL;
 119
 120 ENTRYPOINT void
 121 reshape_glschool(ModeInfo *mi, int width, int height)
 122 {
 123         Bool                                    wire = MI_IS_WIREFRAME(mi);
 124         double                                  aspect = (double)width/(double)height;
 125         glschool_configuration  *sc = &scs[MI_SCREEN(mi)];
 126
 127         glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(sc->context));
 128         if (sc->school != (School *)0) {
 129                 setBBox(sc->school, -aspect*160, aspect*160, -130, 130, -450, -50.0);
 130                 glDeleteLists(sc->bboxList, 1);
 131                 createBBoxList(&SCHOOL_BBOX(sc->school), &sc->bboxList, wire);
 132         }
 133         reshape(width, height);
 134 }
 135
 136 ENTRYPOINT void
 137 init_glschool(ModeInfo *mi)
 138 {
 139         int                                             width = MI_WIDTH(mi);
 140         int                                             height = MI_HEIGHT(mi);
 141         Bool                                    wire = MI_IS_WIREFRAME(mi);
 142         glschool_configuration  *sc;
 143
 144         if (!scs) {
 145                 scs = (glschool_configuration *)calloc(MI_NUM_SCREENS(mi), sizeof(glschool_configuration));
 146                 if (!scs) {
 147                         perror("init_glschool: ");
 148                         exit(1);
 149                 }
 150         }
 151         sc = &scs[MI_SCREEN(mi)];
 152
 153         sc->drawGoal = DoDrawGoal;
 154         sc->drawBBox = DoDrawBBox;
 155
 156         sc->nColors = 360;
 157         sc->context = init_GL(mi);
 158         sc->colors = (XColor *)calloc(sc->nColors, sizeof(XColor));
 159         make_color_ramp(0, 0,
 160                                         0.0, 1.0, 1.0,
 161                                         359.0, 1.0, 1.0,
 162                                         sc->colors, &sc->nColors,
 163                                         False, 0, False);
 164
 165         sc->school = initSchool(NFish, AccLimit, MaxVel, MinVel, DistExp, Momentum,
 166                                                         MinRadius, AvoidFact, MatchFact, CenterFact, TargetFact,
 167                                                         DistComp);
 168         if (sc->school == (School *)0) {
 169                 fprintf(stderr, "couldn't initialize TheSchool, exiting\n");
 170                 exit(1);
 171         }
 172
 173         reshape_glschool(mi, width, height);
 174
 175         initGLEnv(DoFog);
 176         initFishes(sc->school);
 177         createDrawLists(&SCHOOL_BBOX(sc->school), &sc->bboxList, &sc->goalList, &sc->fishList,
 178                         &sc->fish_polys, &sc->box_polys, wire);
 179         computeAccelerations(sc->school);
 180 }
 181
 182 ENTRYPOINT void
 183 draw_glschool(ModeInfo *mi)
 184 {
 185         Window                                  window = MI_WINDOW(mi);
 186         Display                                 *dpy = MI_DISPLAY(mi);
 187         glschool_configuration  *sc = &scs[MI_SCREEN(mi)];
 188
 189         if (!sc->context) {
 190                 fprintf(stderr, "no context\n");
 191                 return;
 192         }
 193
 194         glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(sc->context));
 195
 196         mi->polygon_count = 0;
 197
 198         if ((sc->goalCounter % GoalChgFreq) == 0)
 199                 newGoal(sc->school);
 200         sc->goalCounter++;
 201
 202         sc->rotCounter++;
 203         sc->rotCounter = (sc->rotCounter%360);
 204
 205         applyMovements(sc->school);
 206         drawSchool(sc->colors, sc->school, sc->bboxList, sc->goalList, sc->fishList, sc->rotCounter, sc->drawGoal, sc->drawBBox,
 207                    sc->fish_polys, sc->box_polys,
 208                    &mi->polygon_count);
 209         computeAccelerations(sc->school);
 210
 211         if (mi->fps_p)
 212                 do_fps(mi);
 213
 214         glFinish();
 215         glXSwapBuffers(dpy, window);
 216 }
 217
 218 XSCREENSAVER_MODULE("GLSchool", glschool)