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

   1 /* -*- Mode: C; tab-width: 4 -*- */
   2 /* pipes --- 3D selfbuiding pipe system */
   3
   4 #if 0
   5 static const char sccsid[] = "@(#)pipes.c       4.07 97/11/24 xlockmore";
   6 #endif
   7
   8 /*-
   9  * Permission to use, copy, modify, and distribute this software and its
  10  * documentation for any purpose and without fee is hereby granted,
  11  * provided that the above copyright notice appear in all copies and that
  12  * both that copyright notice and this permission notice appear in
  13  * supporting documentation.
  14  *
  15  * This file is provided AS IS with no warranties of any kind.  The author
  16  * shall have no liability with respect to the infringement of copyrights,
  17  * trade secrets or any patents by this file or any part thereof.  In no
  18  * event will the author be liable for any lost revenue or profits or
  19  * other special, indirect and consequential damages.
  20  *
  21  * This program was inspired on a WindowsNT(R)'s screen saver. It was written
  22  * from scratch and it was not based on any other source code.
  23  *
  24  * ==========================================================================
  25  * The routine myElbow is derivated from the doughnut routine from the MesaGL
  26  * library (more especifically the Mesaaux library) written by Brian Paul.
  27  * ==========================================================================
  28  *
  29  * Thanks goes to Brian Paul for making it possible and inexpensive to use
  30  * OpenGL at home.
  31  *
  32  * Since I'm not a native English speaker, my apologies for any grammatical
  33  * mistake.
  34  *
  35  * My e-mail address is
  36  * m-vianna@usa.net
  37  * Marcelo F. Vianna (Apr-09-1997)
  38  *
  39  * Revision History:
  40  * 29-Apr-97: Factory equipment by Ed Mackey.  Productive day today, eh?
  41  * 29-Apr-97: Less tight turns Jeff Epler <jepler@inetnebr.com>
  42  * 29-Apr-97: Efficiency speed-ups by Marcelo F. Vianna
  43  */
  44
  45 #ifdef STANDALONE
  46 # define PROGCLASS                                      "Pipes"
  47 # define HACK_INIT                                      init_pipes
  48 # define HACK_DRAW                                      draw_pipes
  49 # define HACK_RESHAPE                           reshape_pipes
  50 # define pipes_opts                                     xlockmore_opts
  51 # define DEFAULTS       "*delay:                10000   \n"                     \
  52                                         "*count:                2       \n"                     \
  53                                         "*cycles:               5       \n"                     \
  54                                         "*size:                 500     \n"                     \
  55                         "*showFPS:      False   \n"                 \
  56                         "*fpsSolid:     True    \n"                 \
  57
  58 # include "xlockmore.h"                         /* from the xscreensaver distribution */
  59 #else  /* !STANDALONE */
  60 # include "xlock.h"                                     /* from the xlockmore distribution */
  61 #endif /* !STANDALONE */
  62
  63 #ifdef USE_GL
  64
  65 #include <GL/glu.h>
  66 #include "buildlwo.h"
  67
  68 #define DEF_FACTORY     "2"
  69 #define DEF_FISHEYE     "True"
  70 #define DEF_TIGHTTURNS  "False"
  71 #define DEF_ROTATEPIPES "True"
  72 #define DEF_DBUF        "False"
  73 #define NofSysTypes     3
  74
  75 static int  factory;
  76 static Bool fisheye, tightturns, rotatepipes;
  77 static Bool dbuf_p;
  78
  79 static XrmOptionDescRec opts[] =
  80 {
  81         {"-factory", ".pipes.factory", XrmoptionSepArg, 0},
  82         {"-fisheye", ".pipes.fisheye", XrmoptionNoArg, "on"},
  83         {"+fisheye", ".pipes.fisheye", XrmoptionNoArg, "off"},
  84         {"-tightturns", ".pipes.tightturns", XrmoptionNoArg, "on"},
  85         {"+tightturns", ".pipes.tightturns", XrmoptionNoArg, "off"},
  86       {"-rotatepipes", ".pipes.rotatepipes", XrmoptionNoArg, "on"},
  87       {"+rotatepipes", ".pipes.rotatepipes", XrmoptionNoArg, "off"},
  88       {"-db", ".pipes.doubleBuffer", XrmoptionNoArg, "on"},
  89       {"+db", ".pipes.doubleBuffer", XrmoptionNoArg, "off"},
  90 };
  91 static argtype vars[] =
  92 {
  93         {&factory, "factory", "Factory", DEF_FACTORY, t_Int},
  94         {&fisheye, "fisheye", "Fisheye", DEF_FISHEYE, t_Bool},
  95         {&tightturns, "tightturns", "Tightturns", DEF_TIGHTTURNS, t_Bool},
  96         {&rotatepipes, "rotatepipes", "Rotatepipes", DEF_ROTATEPIPES, t_Bool},
  97         {&dbuf_p, "doubleBuffer", "DoubleBuffer", DEF_DBUF, t_Bool}
  98 };
  99 static OptionStruct desc[] =
 100 {
 101         {"-factory num", "how much extra equipment in pipes (0 for none)"},
 102         {"-/+fisheye", "turn on/off zoomed-in view of pipes"},
 103         {"-/+tightturns", "turn on/off tight turns"},
 104         {"-/+rotatepipes", "turn on/off pipe system rotation per screenful"},
 105         {"-/+db", "turn on/off double buffering"}
 106 };
 107
 108 ModeSpecOpt pipes_opts =
 109 {sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
 110
 111 #ifdef USE_MODULES
 112 ModStruct   pipes_description =
 113 {"pipes", "init_pipes", "draw_pipes", "release_pipes",
 114  "draw_pipes",
 115  "change_pipes", NULL, &pipes_opts,
 116  1000, 2, 5, 500, 4, 1.0, "",
 117  "Shows a selfbuilding pipe system", 0, NULL};
 118
 119 #endif
 120
 121 #define Scale4Window               0.1
 122 #define Scale4Iconic               0.07
 123
 124 #define one_third                  0.3333333333333333333
 125
 126 #define dirNone -1
 127 #define dirUP 0
 128 #define dirDOWN 1
 129 #define dirLEFT 2
 130 #define dirRIGHT 3
 131 #define dirNEAR 4
 132 #define dirFAR 5
 133
 134 #define HCELLS 33
 135 #define VCELLS 25
 136 #define DEFINEDCOLORS 7
 137 #define elbowradius 0.5
 138
 139 /*************************************************************************/
 140
 141 typedef struct {
 142         int         flip;
 143
 144         GLint       WindH, WindW;
 145         int         Cells[HCELLS][VCELLS][HCELLS];
 146         int         usedcolors[DEFINEDCOLORS];
 147         int         directions[6];
 148         int         ndirections;
 149         int         nowdir, olddir;
 150         int         system_number;
 151         int         counter;
 152         int         PX, PY, PZ;
 153         int         number_of_systems;
 154         int         system_type;
 155         int         system_length;
 156         int         turncounter;
 157         Window      window;
 158         float      *system_color;
 159         GLfloat     initial_rotation;
 160         GLuint      valve, bolts, betweenbolts, elbowbolts, elbowcoins;
 161         GLuint      guagehead, guageface, guagedial, guageconnector;
 162         GLXContext *glx_context;
 163 } pipesstruct;
 164
 165 extern struct lwo LWO_BigValve, LWO_PipeBetweenBolts, LWO_Bolts3D;
 166 extern struct lwo LWO_GuageHead, LWO_GuageFace, LWO_GuageDial, LWO_GuageConnector;
 167 extern struct lwo LWO_ElbowBolts, LWO_ElbowCoins;
 168
 169 static float front_shininess[] =
 170 {60.0};
 171 static float front_specular[] =
 172 {0.7, 0.7, 0.7, 1.0};
 173 static float ambient0[] =
 174 {0.4, 0.4, 0.4, 1.0};
 175 static float diffuse0[] =
 176 {1.0, 1.0, 1.0, 1.0};
 177 static float ambient1[] =
 178 {0.2, 0.2, 0.2, 1.0};
 179 static float diffuse1[] =
 180 {0.5, 0.5, 0.5, 1.0};
 181 static float position0[] =
 182 {1.0, 1.0, 1.0, 0.0};
 183 static float position1[] =
 184 {-1.0, -1.0, 1.0, 0.0};
 185 static float lmodel_ambient[] =
 186 {0.5, 0.5, 0.5, 1.0};
 187 static float lmodel_twoside[] =
 188 {GL_TRUE};
 189
 190 static float MaterialRed[] =
 191 {0.7, 0.0, 0.0, 1.0};
 192 static float MaterialGreen[] =
 193 {0.1, 0.5, 0.2, 1.0};
 194 static float MaterialBlue[] =
 195 {0.0, 0.0, 0.7, 1.0};
 196 static float MaterialCyan[] =
 197 {0.2, 0.5, 0.7, 1.0};
 198 static float MaterialYellow[] =
 199 {0.7, 0.7, 0.0, 1.0};
 200 static float MaterialMagenta[] =
 201 {0.6, 0.2, 0.5, 1.0};
 202 static float MaterialWhite[] =
 203 {0.7, 0.7, 0.7, 1.0};
 204 static float MaterialGray[] =
 205 {0.2, 0.2, 0.2, 1.0};
 206
 207 static pipesstruct *pipes = NULL;
 208
 209
 210 static void
 211 MakeTube(ModeInfo *mi, int direction)
 212 {
 213         float       an;
 214         float       SINan_3, COSan_3;
 215
 216         /*dirUP    = 00000000 */
 217         /*dirDOWN  = 00000001 */
 218         /*dirLEFT  = 00000010 */
 219         /*dirRIGHT = 00000011 */
 220         /*dirNEAR  = 00000100 */
 221         /*dirFAR   = 00000101 */
 222
 223         if (!(direction & 4)) {
 224                 glRotatef(90.0, (direction & 2) ? 0.0 : 1.0,
 225                           (direction & 2) ? 1.0 : 0.0, 0.0);
 226         }
 227         glBegin(GL_QUAD_STRIP);
 228         for (an = 0.0; an <= 2.0 * M_PI; an += M_PI / 12.0) {
 229                 glNormal3f((COSan_3 = cos(an) / 3.0), (SINan_3 = sin(an) / 3.0), 0.0);
 230                 glVertex3f(COSan_3, SINan_3, one_third);
 231                 glVertex3f(COSan_3, SINan_3, -one_third);
 232         mi->polygon_count++;
 233         }
 234         glEnd();
 235 }
 236
 237 static void
 238 mySphere(float radius)
 239 {
 240         GLUquadricObj *quadObj;
 241
 242         quadObj = gluNewQuadric();
 243         gluQuadricDrawStyle(quadObj, (GLenum) GLU_FILL);
 244         gluSphere(quadObj, radius, 16, 16);
 245         gluDeleteQuadric(quadObj);
 246 }
 247
 248 static void
 249 myElbow(ModeInfo * mi, int bolted)
 250 {
 251 #define nsides 25
 252 #define rings 25
 253 #define r one_third
 254 #define R one_third
 255
 256         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 257
 258         int         i, j;
 259         GLfloat     p0[3], p1[3], p2[3], p3[3];
 260         GLfloat     n0[3], n1[3], n2[3], n3[3];
 261         GLfloat     COSphi, COSphi1, COStheta, COStheta1;
 262         GLfloat     _SINtheta, _SINtheta1;
 263
 264         for (i = 0; i <= rings / 4; i++) {
 265                 GLfloat     theta, theta1;
 266
 267                 theta = (GLfloat) i *2.0 * M_PI / rings;
 268
 269                 theta1 = (GLfloat) (i + 1) * 2.0 * M_PI / rings;
 270                 for (j = 0; j < nsides; j++) {
 271                         GLfloat     phi, phi1;
 272
 273                         phi = (GLfloat) j *2.0 * M_PI / nsides;
 274
 275                         phi1 = (GLfloat) (j + 1) * 2.0 * M_PI / nsides;
 276
 277                         p0[0] = (COStheta = cos(theta)) * (R + r * (COSphi = cos(phi)));
 278                         p0[1] = (_SINtheta = -sin(theta)) * (R + r * COSphi);
 279
 280                         p1[0] = (COStheta1 = cos(theta1)) * (R + r * COSphi);
 281                         p1[1] = (_SINtheta1 = -sin(theta1)) * (R + r * COSphi);
 282
 283                         p2[0] = COStheta1 * (R + r * (COSphi1 = cos(phi1)));
 284                         p2[1] = _SINtheta1 * (R + r * COSphi1);
 285
 286                         p3[0] = COStheta * (R + r * COSphi1);
 287                         p3[1] = _SINtheta * (R + r * COSphi1);
 288
 289                         n0[0] = COStheta * COSphi;
 290                         n0[1] = _SINtheta * COSphi;
 291
 292                         n1[0] = COStheta1 * COSphi;
 293                         n1[1] = _SINtheta1 * COSphi;
 294
 295                         n2[0] = COStheta1 * COSphi1;
 296                         n2[1] = _SINtheta1 * COSphi1;
 297
 298                         n3[0] = COStheta * COSphi1;
 299                         n3[1] = _SINtheta * COSphi1;
 300
 301                         p0[2] = p1[2] = r * (n0[2] = n1[2] = sin(phi));
 302                         p2[2] = p3[2] = r * (n2[2] = n3[2] = sin(phi1));
 303
 304                         glBegin(GL_QUADS);
 305                         glNormal3fv(n3);
 306                         glVertex3fv(p3);
 307                         glNormal3fv(n2);
 308                         glVertex3fv(p2);
 309                         glNormal3fv(n1);
 310                         glVertex3fv(p1);
 311                         glNormal3fv(n0);
 312                         glVertex3fv(p0);
 313             mi->polygon_count++;
 314                         glEnd();
 315                 }
 316         }
 317
 318         if (factory > 0 && bolted) {
 319                 /* Bolt the elbow onto the pipe system */
 320                 glFrontFace(GL_CW);
 321                 glPushMatrix();
 322                 glRotatef(90.0, 0.0, 0.0, -1.0);
 323                 glRotatef(90.0, 0.0, 1.0, 0.0);
 324                 glTranslatef(0.0, one_third, one_third);
 325                 glCallList(pp->elbowcoins);
 326         mi->polygon_count += LWO_ElbowCoins.num_pnts/3;
 327                 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 328                 glCallList(pp->elbowbolts);
 329         mi->polygon_count += LWO_ElbowBolts.num_pnts/3;
 330                 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 331                 glPopMatrix();
 332                 glFrontFace(GL_CCW);
 333         }
 334 #undef r
 335 #undef R
 336 #undef nsides
 337 #undef rings
 338 }
 339
 340 static void
 341 FindNeighbors(ModeInfo * mi)
 342 {
 343         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 344
 345         pp->ndirections = 0;
 346         pp->directions[dirUP] = (!pp->Cells[pp->PX][pp->PY + 1][pp->PZ]) ? 1 : 0;
 347         pp->ndirections += pp->directions[dirUP];
 348         pp->directions[dirDOWN] = (!pp->Cells[pp->PX][pp->PY - 1][pp->PZ]) ? 1 : 0;
 349         pp->ndirections += pp->directions[dirDOWN];
 350         pp->directions[dirLEFT] = (!pp->Cells[pp->PX - 1][pp->PY][pp->PZ]) ? 1 : 0;
 351         pp->ndirections += pp->directions[dirLEFT];
 352         pp->directions[dirRIGHT] = (!pp->Cells[pp->PX + 1][pp->PY][pp->PZ]) ? 1 : 0;
 353         pp->ndirections += pp->directions[dirRIGHT];
 354         pp->directions[dirFAR] = (!pp->Cells[pp->PX][pp->PY][pp->PZ - 1]) ? 1 : 0;
 355         pp->ndirections += pp->directions[dirFAR];
 356         pp->directions[dirNEAR] = (!pp->Cells[pp->PX][pp->PY][pp->PZ + 1]) ? 1 : 0;
 357         pp->ndirections += pp->directions[dirNEAR];
 358 }
 359
 360 static int
 361 SelectNeighbor(ModeInfo * mi)
 362 {
 363         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 364         int         dirlist[6];
 365         int         i, j;
 366
 367         for (i = 0, j = 0; i < 6; i++) {
 368                 if (pp->directions[i]) {
 369                         dirlist[j] = i;
 370                         j++;
 371                 }
 372         }
 373
 374         return dirlist[NRAND(pp->ndirections)];
 375 }
 376
 377 static void
 378 MakeValve(ModeInfo * mi, int newdir)
 379 {
 380         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 381
 382         /* There is a glPopMatrix() right after this subroutine returns. */
 383         switch (newdir) {
 384                 case dirUP:
 385                 case dirDOWN:
 386                         glRotatef(90.0, 1.0, 0.0, 0.0);
 387                         glRotatef(NRAND(3) * 90.0, 0.0, 0.0, 1.0);
 388                         break;
 389                 case dirLEFT:
 390                 case dirRIGHT:
 391                         glRotatef(90.0, 0.0, -1.0, 0.0);
 392                         glRotatef((NRAND(3) * 90.0) - 90.0, 0.0, 0.0, 1.0);
 393                         break;
 394                 case dirNEAR:
 395                 case dirFAR:
 396                         glRotatef(NRAND(4) * 90.0, 0.0, 0.0, 1.0);
 397                         break;
 398         }
 399         glFrontFace(GL_CW);
 400         glCallList(pp->betweenbolts);
 401     mi->polygon_count += LWO_PipeBetweenBolts.num_pnts/3;
 402         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 403         glCallList(pp->bolts);
 404     mi->polygon_count += LWO_Bolts3D.num_pnts/3;
 405         if (!MI_IS_MONO(mi)) {
 406                 if (pp->system_color == MaterialRed) {
 407                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialYellow : MaterialBlue);
 408                 } else if (pp->system_color == MaterialBlue) {
 409                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialRed : MaterialYellow);
 410                 } else if (pp->system_color == MaterialYellow) {
 411                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialBlue : MaterialRed);
 412                 } else {
 413                         switch ((NRAND(3))) {
 414                                 case 0:
 415                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialRed);
 416                                         break;
 417                                 case 1:
 418                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialBlue);
 419                                         break;
 420                                 case 2:
 421                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialYellow);
 422                         }
 423                 }
 424         }
 425         glRotatef((GLfloat) (NRAND(90)), 1.0, 0.0, 0.0);
 426         glCallList(pp->valve);
 427     mi->polygon_count += LWO_BigValve.num_pnts/3;
 428         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 429         glFrontFace(GL_CCW);
 430 }
 431
 432 static int
 433 MakeGuage(ModeInfo * mi, int newdir)
 434 {
 435         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 436
 437         /* Can't have a guage on a vertical pipe. */
 438         if ((newdir == dirUP) || (newdir == dirDOWN))
 439                 return (0);
 440
 441         /* Is there space above this pipe for a guage? */
 442         if (!pp->directions[dirUP])
 443                 return (0);
 444
 445         /* Yes!  Mark the space as used. */
 446         pp->Cells[pp->PX][pp->PY + 1][pp->PZ] = 1;
 447
 448         glFrontFace(GL_CW);
 449         glPushMatrix();
 450         if ((newdir == dirLEFT) || (newdir == dirRIGHT))
 451                 glRotatef(90.0, 0.0, 1.0, 0.0);
 452         glCallList(pp->betweenbolts);
 453     mi->polygon_count += LWO_PipeBetweenBolts.num_pnts/3;
 454         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 455         glCallList(pp->bolts);
 456     mi->polygon_count += LWO_Bolts3D.num_pnts/3;
 457         glPopMatrix();
 458
 459         glCallList(pp->guageconnector);
 460     mi->polygon_count += LWO_GuageConnector.num_pnts/3;
 461         glPushMatrix();
 462         glTranslatef(0.0, 1.33333, 0.0);
 463         /* Do not change the above to 1 + ONE_THIRD, because */
 464         /* the object really is centered on 1.3333300000. */
 465         glRotatef(NRAND(270) + 45.0, 0.0, 0.0, -1.0);
 466         /* Random rotation for the dial.  I love it. */
 467         glCallList(pp->guagedial);
 468     mi->polygon_count += LWO_GuageDial.num_pnts/3;
 469         glPopMatrix();
 470
 471         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 472         glCallList(pp->guagehead);
 473     mi->polygon_count += LWO_GuageHead.num_pnts/3;
 474
 475         /* GuageFace is drawn last, in case of low-res depth buffers. */
 476         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialWhite);
 477         glCallList(pp->guageface);
 478     mi->polygon_count += LWO_GuageFace.num_pnts/3;
 479
 480         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 481         glFrontFace(GL_CCW);
 482
 483         return (1);
 484 }
 485
 486 static void
 487 MakeShape(ModeInfo * mi, int newdir)
 488 {
 489         switch (NRAND(2)) {
 490                 case 1:
 491                         if (!MakeGuage(mi, newdir))
 492                                 MakeTube(mi, newdir);
 493                         break;
 494                 default:
 495                         MakeValve(mi, newdir);
 496                         break;
 497         }
 498 }
 499
 500 void
 501 reshape_pipes(ModeInfo * mi, int width, int height)
 502 {
 503         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 504
 505         glViewport(0, 0, pp->WindW = (GLint) width, pp->WindH = (GLint) height);
 506         glMatrixMode(GL_PROJECTION);
 507         glLoadIdentity();
 508         /*glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0); */
 509         gluPerspective(65.0, (GLfloat) width / (GLfloat) height, 0.1, 20.0);
 510         glMatrixMode(GL_MODELVIEW);
 511
 512   glClear(GL_COLOR_BUFFER_BIT);
 513 }
 514
 515 static void
 516 pinit(ModeInfo * mi, int zera)
 517 {
 518         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 519         int         X, Y, Z;
 520
 521     if (zera)
 522       mi->polygon_count = 0;
 523
 524         glClearDepth(1.0);
 525         glClearColor(0.0, 0.0, 0.0, 1.0);
 526         glColor3f(1.0, 1.0, 1.0);
 527
 528         glLightfv(GL_LIGHT0, GL_AMBIENT, ambient0);
 529         glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse0);
 530         glLightfv(GL_LIGHT0, GL_POSITION, position0);
 531         glLightfv(GL_LIGHT1, GL_AMBIENT, ambient1);
 532         glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse1);
 533         glLightfv(GL_LIGHT1, GL_POSITION, position1);
 534         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
 535         glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
 536         glEnable(GL_LIGHTING);
 537         glEnable(GL_LIGHT0);
 538         glEnable(GL_LIGHT1);
 539         glEnable(GL_DEPTH_TEST);
 540         glEnable(GL_NORMALIZE);
 541         glEnable(GL_CULL_FACE);
 542
 543         glShadeModel(GL_SMOOTH);
 544         glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, front_shininess);
 545         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_specular);
 546
 547         if (zera) {
 548                 pp->system_number = 1;
 549                 glDrawBuffer(dbuf_p ? GL_BACK : GL_FRONT);
 550                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 551                 (void) memset(pp->Cells, 0, sizeof (pp->Cells));
 552                 for (X = 0; X < HCELLS; X++) {
 553                         for (Y = 0; Y < VCELLS; Y++) {
 554                                 pp->Cells[X][Y][0] = 1;
 555                                 pp->Cells[X][Y][HCELLS - 1] = 1;
 556                                 pp->Cells[0][Y][X] = 1;
 557                                 pp->Cells[HCELLS - 1][Y][X] = 1;
 558                         }
 559                 }
 560                 for (X = 0; X < HCELLS; X++) {
 561                         for (Z = 0; Z < HCELLS; Z++) {
 562                                 pp->Cells[X][0][Z] = 1;
 563                                 pp->Cells[X][VCELLS - 1][Z] = 1;
 564                         }
 565                 }
 566                 (void) memset(pp->usedcolors, 0, sizeof (pp->usedcolors));
 567                 if ((pp->initial_rotation += 10.0) > 45.0) {
 568                         pp->initial_rotation -= 90.0;
 569                 }
 570         }
 571         pp->counter = 0;
 572         pp->turncounter = 0;
 573
 574         if (!MI_IS_MONO(mi)) {
 575                 int         collist[DEFINEDCOLORS];
 576                 int         i, j, lower = 1000;
 577
 578                 /* Avoid repeating colors on the same screen unless necessary */
 579                 for (i = 0; i < DEFINEDCOLORS; i++) {
 580                         if (lower > pp->usedcolors[i])
 581                                 lower = pp->usedcolors[i];
 582                 }
 583                 for (i = 0, j = 0; i < DEFINEDCOLORS; i++) {
 584                         if (pp->usedcolors[i] == lower) {
 585                                 collist[j] = i;
 586                                 j++;
 587                         }
 588                 }
 589                 i = collist[NRAND(j)];
 590                 pp->usedcolors[i]++;
 591                 switch (i) {
 592                         case 0:
 593                                 pp->system_color = MaterialRed;
 594                                 break;
 595                         case 1:
 596                                 pp->system_color = MaterialGreen;
 597                                 break;
 598                         case 2:
 599                                 pp->system_color = MaterialBlue;
 600                                 break;
 601                         case 3:
 602                                 pp->system_color = MaterialCyan;
 603                                 break;
 604                         case 4:
 605                                 pp->system_color = MaterialYellow;
 606                                 break;
 607                         case 5:
 608                                 pp->system_color = MaterialMagenta;
 609                                 break;
 610                         case 6:
 611                                 pp->system_color = MaterialWhite;
 612                                 break;
 613                 }
 614         } else {
 615                 pp->system_color = MaterialGray;
 616         }
 617
 618         do {
 619                 pp->PX = NRAND((HCELLS - 1)) + 1;
 620                 pp->PY = NRAND((VCELLS - 1)) + 1;
 621                 pp->PZ = NRAND((HCELLS - 1)) + 1;
 622         } while (pp->Cells[pp->PX][pp->PY][pp->PZ] ||
 623                  (pp->Cells[pp->PX + 1][pp->PY][pp->PZ] && pp->Cells[pp->PX - 1][pp->PY][pp->PZ] &&
 624                   pp->Cells[pp->PX][pp->PY + 1][pp->PZ] && pp->Cells[pp->PX][pp->PY - 1][pp->PZ] &&
 625                   pp->Cells[pp->PX][pp->PY][pp->PZ + 1] && pp->Cells[pp->PX][pp->PY][pp->PZ - 1]));
 626         pp->Cells[pp->PX][pp->PY][pp->PZ] = 1;
 627         pp->olddir = dirNone;
 628
 629         FindNeighbors(mi);
 630
 631         pp->nowdir = SelectNeighbor(mi);
 632 }
 633
 634 void
 635 init_pipes(ModeInfo * mi)
 636 {
 637         int         screen = MI_SCREEN(mi);
 638         pipesstruct *pp;
 639
 640         if (pipes == NULL) {
 641                 if ((pipes = (pipesstruct *) calloc(MI_NUM_SCREENS(mi),
 642                                               sizeof (pipesstruct))) == NULL)
 643                         return;
 644         }
 645         pp = &pipes[screen];
 646
 647         pp->window = MI_WINDOW(mi);
 648         if ((pp->glx_context = init_GL(mi)) != NULL) {
 649
 650                 reshape_pipes(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
 651                 if (rotatepipes)
 652                   pp->initial_rotation = NRAND(180); /* jwz */
 653                 else
 654                   pp->initial_rotation = -10.0;
 655                 pinit(mi, 1);
 656
 657                 if (factory > 0) {
 658                         pp->valve = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_BigValve);
 659                         pp->bolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_Bolts3D);
 660                         pp->betweenbolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_PipeBetweenBolts);
 661
 662                         pp->elbowbolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_ElbowBolts);
 663                         pp->elbowcoins = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_ElbowCoins);
 664
 665                         pp->guagehead = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageHead);
 666                         pp->guageface = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageFace);
 667                         pp->guagedial = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageDial);
 668                         pp->guageconnector = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageConnector);
 669                 }
 670                 /* else they are all 0, thanks to calloc(). */
 671
 672                 if (MI_COUNT(mi) < 1 || MI_COUNT(mi) > NofSysTypes + 1) {
 673                         pp->system_type = NRAND(NofSysTypes) + 1;
 674                 } else {
 675                         pp->system_type = MI_COUNT(mi);
 676                 }
 677
 678                 if (MI_CYCLES(mi) > 0 && MI_CYCLES(mi) < 11) {
 679                         pp->number_of_systems = MI_CYCLES(mi);
 680                 } else {
 681                         pp->number_of_systems = 5;
 682                 }
 683
 684                 if (MI_SIZE(mi) < 10) {
 685                         pp->system_length = 10;
 686                 } else if (MI_SIZE(mi) > 1000) {
 687                         pp->system_length = 1000;
 688                 } else {
 689                         pp->system_length = MI_SIZE(mi);
 690                 }
 691         } else {
 692                 MI_CLEARWINDOW(mi);
 693         }
 694 }
 695
 696 void
 697 draw_pipes(ModeInfo * mi)
 698 {
 699         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 700
 701         Display    *display = MI_DISPLAY(mi);
 702         Window      window = MI_WINDOW(mi);
 703
 704         int         newdir;
 705         int         OPX, OPY, OPZ;
 706
 707         if (!pp->glx_context)
 708                 return;
 709
 710         glPushMatrix();
 711
 712         glTranslatef(0.0, 0.0, fisheye ? -3.8 : -4.8);
 713         if (rotatepipes)
 714                 glRotatef(pp->initial_rotation, 0.0, 1.0, 0.0);
 715
 716         if (!MI_IS_ICONIC(mi)) {
 717                 /* Width/height ratio handled by gluPerspective() now. */
 718                 glScalef(Scale4Window, Scale4Window, Scale4Window);
 719         } else {
 720                 glScalef(Scale4Iconic, Scale4Iconic, Scale4Iconic);
 721         }
 722
 723         FindNeighbors(mi);
 724
 725         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 726
 727         /* If it's the begining of a system, draw a sphere */
 728         if (pp->olddir == dirNone) {
 729                 glPushMatrix();
 730                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 731                 mySphere(0.6);
 732                 glPopMatrix();
 733         }
 734         /* Check for stop conditions */
 735         if (pp->ndirections == 0 || pp->counter > pp->system_length) {
 736                 glPushMatrix();
 737                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 738                 /* Finish the system with another sphere */
 739                 mySphere(0.6);
 740
 741                 glPopMatrix();
 742
 743                 /* If the maximum number of system was drawn, restart (clearing the screen), */
 744                 /* else start a new system. */
 745                 if (++pp->system_number > pp->number_of_systems) {
 746           if (!mi->fps_p)
 747             sleep(1);
 748                         pinit(mi, 1);
 749                 } else {
 750                         pinit(mi, 0);
 751                 }
 752
 753                 glPopMatrix();
 754                 return;
 755         }
 756         pp->counter++;
 757         pp->turncounter++;
 758
 759         /* Do will the direction change? if so, determine the new one */
 760         newdir = pp->nowdir;
 761         if (!pp->directions[newdir]) {  /* cannot proceed in the current direction */
 762                 newdir = SelectNeighbor(mi);
 763         } else {
 764                 if (tightturns) {
 765                         /* random change (20% chance) */
 766                         if ((pp->counter > 1) && (NRAND(100) < 20)) {
 767                                 newdir = SelectNeighbor(mi);
 768                         }
 769                 } else {
 770                         /* Chance to turn increases after each length of pipe drawn */
 771                         if ((pp->counter > 1) && NRAND(50) < NRAND(pp->turncounter + 1)) {
 772                                 newdir = SelectNeighbor(mi);
 773                                 pp->turncounter = 0;
 774                         }
 775                 }
 776         }
 777
 778         /* Has the direction changed? */
 779         if (newdir == pp->nowdir) {
 780                 /* If not, draw the cell's center pipe */
 781                 glPushMatrix();
 782                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 783                 /* Chance of factory shape here, if enabled. */
 784                 if ((pp->counter > 1) && (NRAND(100) < factory)) {
 785                         MakeShape(mi, newdir);
 786                 } else {
 787                         MakeTube(mi, newdir);
 788                 }
 789                 glPopMatrix();
 790         } else {
 791                 /* If so, draw the cell's center elbow/sphere */
 792                 int         sysT = pp->system_type;
 793
 794                 if (sysT == NofSysTypes + 1) {
 795                         sysT = ((pp->system_number - 1) % NofSysTypes) + 1;
 796                 }
 797                 glPushMatrix();
 798
 799                 switch (sysT) {
 800                         case 1:
 801                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 802                                 mySphere(elbowradius);
 803                                 break;
 804                         case 2:
 805                         case 3:
 806                                 switch (pp->nowdir) {
 807                                         case dirUP:
 808                                                 switch (newdir) {
 809                                                         case dirLEFT:
 810                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 811                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 812                                                                 break;
 813                                                         case dirRIGHT:
 814                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 815                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 816                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 817                                                                 break;
 818                                                         case dirFAR:
 819                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 820                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 821                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 822                                                                 break;
 823                                                         case dirNEAR:
 824                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 825                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 826                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 827                                                                 break;
 828                                                 }
 829                                                 break;
 830                                         case dirDOWN:
 831                                                 switch (newdir) {
 832                                                         case dirLEFT:
 833                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 834                                                                 break;
 835                                                         case dirRIGHT:
 836                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 837                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 838                                                                 break;
 839                                                         case dirFAR:
 840                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 841                                                                 glRotatef(270.0, 0.0, 1.0, 0.0);
 842                                                                 break;
 843                                                         case dirNEAR:
 844                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 845                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 846                                                                 break;
 847                                                 }
 848                                                 break;
 849                                         case dirLEFT:
 850                                                 switch (newdir) {
 851                                                         case dirUP:
 852                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 853                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 854                                                                 break;
 855                                                         case dirDOWN:
 856                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 857                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 858                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 859                                                                 break;
 860                                                         case dirFAR:
 861                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 862                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 863                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 864                                                                 break;
 865                                                         case dirNEAR:
 866                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 867                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 868                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 869                                                                 break;
 870                                                 }
 871                                                 break;
 872                                         case dirRIGHT:
 873                                                 switch (newdir) {
 874                                                         case dirUP:
 875                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 876                                                                 break;
 877                                                         case dirDOWN:
 878                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0);
 879                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 880                                                                 break;
 881                                                         case dirFAR:
 882                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 883                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 884                                                                 break;
 885                                                         case dirNEAR:
 886                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 887                                                                 glRotatef(90.0, 1.0, 0.0, 0.0);
 888                                                                 break;
 889                                                 }
 890                                                 break;
 891                                         case dirNEAR:
 892                                                 switch (newdir) {
 893                                                         case dirLEFT:
 894                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 895                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 896                                                                 break;
 897                                                         case dirRIGHT:
 898                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 899                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 900                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 901                                                                 break;
 902                                                         case dirUP:
 903                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 904                                                                 glRotatef(270.0, 0.0, 1.0, 0.0);
 905                                                                 break;
 906                                                         case dirDOWN:
 907                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0 - (one_third));
 908                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 909                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 910                                                                 break;
 911                                                 }
 912                                                 break;
 913                                         case dirFAR:
 914                                                 switch (newdir) {
 915                                                         case dirUP:
 916                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 + (one_third), (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 917                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 918                                                                 break;
 919                                                         case dirDOWN:
 920                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0 - (one_third), (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 921                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 922                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 923                                                                 break;
 924                                                         case dirLEFT:
 925                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 - (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 926                                                                 glRotatef(90.0, 1.0, 0.0, 0.0);
 927                                                                 break;
 928                                                         case dirRIGHT:
 929                                                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0 + (one_third), (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0 + (one_third));
 930                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 931                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 932                                                                 break;
 933                                                 }
 934                                                 break;
 935                                 }
 936                                 myElbow(mi, (sysT == 2));
 937                                 break;
 938                 }
 939                 glPopMatrix();
 940         }
 941
 942         OPX = pp->PX;
 943         OPY = pp->PY;
 944         OPZ = pp->PZ;
 945         pp->olddir = pp->nowdir;
 946         pp->nowdir = newdir;
 947         switch (pp->nowdir) {
 948                 case dirUP:
 949                         pp->PY++;
 950                         break;
 951                 case dirDOWN:
 952                         pp->PY--;
 953                         break;
 954                 case dirLEFT:
 955                         pp->PX--;
 956                         break;
 957                 case dirRIGHT:
 958                         pp->PX++;
 959                         break;
 960                 case dirNEAR:
 961                         pp->PZ++;
 962                         break;
 963                 case dirFAR:
 964                         pp->PZ--;
 965                         break;
 966         }
 967         pp->Cells[pp->PX][pp->PY][pp->PZ] = 1;
 968
 969         /* Cells'face pipe */
 970         glTranslatef(((pp->PX + OPX) / 2.0 - 16) / 3.0 * 4.0, ((pp->PY + OPY) / 2.0 - 12) / 3.0 * 4.0, ((pp->PZ + OPZ) / 2.0 - 16) / 3.0 * 4.0);
 971         MakeTube(mi, newdir);
 972
 973         glPopMatrix();
 974
 975         glFlush();
 976
 977     if (dbuf_p)
 978       glXSwapBuffers(display, window);
 979
 980     if (mi->fps_p) do_fps (mi);
 981 }
 982
 983 void
 984 change_pipes(ModeInfo * mi)
 985 {
 986         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 987
 988         if (!pp->glx_context)
 989                 return;
 990
 991         glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(pp->glx_context));
 992         pinit(mi, 1);
 993 }
 994
 995 void
 996 release_pipes(ModeInfo * mi)
 997 {
 998         if (pipes != NULL) {
 999                 int         screen;
1000
1001                 for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
1002                         pipesstruct *pp = &pipes[screen];
1003
1004                         if (pp->glx_context) {
1005
1006                                 /* Display lists MUST be freed while their glXContext is current. */
1007                                 glXMakeCurrent(MI_DISPLAY(mi), pp->window, *(pp->glx_context));
1008
1009                                 if (pp->valve)
1010                                         glDeleteLists(pp->valve, 1);
1011                                 if (pp->bolts)
1012                                         glDeleteLists(pp->bolts, 1);
1013                                 if (pp->betweenbolts)
1014                                         glDeleteLists(pp->betweenbolts, 1);
1015
1016                                 if (pp->elbowbolts)
1017                                         glDeleteLists(pp->elbowbolts, 1);
1018                                 if (pp->elbowcoins)
1019                                         glDeleteLists(pp->elbowcoins, 1);
1020
1021                                 if (pp->guagehead)
1022                                         glDeleteLists(pp->guagehead, 1);
1023                                 if (pp->guageface)
1024                                         glDeleteLists(pp->guageface, 1);
1025                                 if (pp->guagedial)
1026                                         glDeleteLists(pp->guagedial, 1);
1027                                 if (pp->guageconnector)
1028                                         glDeleteLists(pp->guageconnector, 1);
1029                         }
1030                 }
1031
1032                 (void) free((void *) pipes);
1033                 pipes = NULL;
1034         }
1035         FreeAllGL(mi);
1036 }
1037
1038 #endif