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                                         "*fisheye:              True    \n"                     \
  58                                         "*tightturns:   False   \n"                     \
  59                                         "*doubleBuffer: True    \n"                     \
  60                                         "*rotatepipes:  True    \n"
  61 # include "xlockmore.h"                         /* from the xscreensaver distribution */
  62 #else  /* !STANDALONE */
  63 # include "xlock.h"                                     /* from the xlockmore distribution */
  64 #endif /* !STANDALONE */
  65
  66 #ifdef USE_GL
  67
  68 #include <GL/glu.h>
  69 #include "buildlwo.h"
  70
  71 #define DEF_FACTORY     "2"
  72 #define DEF_FISHEYE     "True"
  73 #define DEF_TIGHTTURNS  "False"
  74 #define DEF_ROTATEPIPES "True"
  75 #define DEF_DBUF        "False"
  76 #define NofSysTypes     3
  77
  78 static int  factory;
  79 static Bool fisheye, tightturns, rotatepipes;
  80 static Bool dbuf_p;
  81
  82 static XrmOptionDescRec opts[] =
  83 {
  84         {"-factory", ".pipes.factory", XrmoptionSepArg, 0},
  85         {"-fisheye", ".pipes.fisheye", XrmoptionNoArg, "on"},
  86         {"+fisheye", ".pipes.fisheye", XrmoptionNoArg, "off"},
  87         {"-tightturns", ".pipes.tightturns", XrmoptionNoArg, "on"},
  88         {"+tightturns", ".pipes.tightturns", XrmoptionNoArg, "off"},
  89       {"-rotatepipes", ".pipes.rotatepipes", XrmoptionNoArg, "on"},
  90       {"+rotatepipes", ".pipes.rotatepipes", XrmoptionNoArg, "off"},
  91       {"-db", ".pipes.doubleBuffer", XrmoptionNoArg, "on"},
  92       {"+db", ".pipes.doubleBuffer", XrmoptionNoArg, "off"},
  93 };
  94 static argtype vars[] =
  95 {
  96         {&factory, "factory", "Factory", DEF_FACTORY, t_Int},
  97         {&fisheye, "fisheye", "Fisheye", DEF_FISHEYE, t_Bool},
  98         {&tightturns, "tightturns", "Tightturns", DEF_TIGHTTURNS, t_Bool},
  99         {&rotatepipes, "rotatepipes", "Rotatepipes", DEF_ROTATEPIPES, t_Bool},
 100         {&dbuf_p, "doubleBuffer", "DoubleBuffer", DEF_DBUF, t_Bool}
 101 };
 102 static OptionStruct desc[] =
 103 {
 104         {"-factory num", "how much extra equipment in pipes (0 for none)"},
 105         {"-/+fisheye", "turn on/off zoomed-in view of pipes"},
 106         {"-/+tightturns", "turn on/off tight turns"},
 107         {"-/+rotatepipes", "turn on/off pipe system rotation per screenful"},
 108         {"-/+db", "turn on/off double buffering"}
 109 };
 110
 111 ModeSpecOpt pipes_opts =
 112 {sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
 113
 114 #ifdef USE_MODULES
 115 ModStruct   pipes_description =
 116 {"pipes", "init_pipes", "draw_pipes", "release_pipes",
 117  "draw_pipes",
 118  "change_pipes", NULL, &pipes_opts,
 119  1000, 2, 5, 500, 4, 1.0, "",
 120  "Shows a selfbuilding pipe system", 0, NULL};
 121
 122 #endif
 123
 124 #define Scale4Window               0.1
 125 #define Scale4Iconic               0.07
 126
 127 #define one_third                  0.3333333333333333333
 128
 129 #define dirNone -1
 130 #define dirUP 0
 131 #define dirDOWN 1
 132 #define dirLEFT 2
 133 #define dirRIGHT 3
 134 #define dirNEAR 4
 135 #define dirFAR 5
 136
 137 #define HCELLS 33
 138 #define VCELLS 25
 139 #define DEFINEDCOLORS 7
 140 #define elbowradius 0.5
 141
 142 /*************************************************************************/
 143
 144 typedef struct {
 145         int         flip;
 146
 147         GLint       WindH, WindW;
 148         int         Cells[HCELLS][VCELLS][HCELLS];
 149         int         usedcolors[DEFINEDCOLORS];
 150         int         directions[6];
 151         int         ndirections;
 152         int         nowdir, olddir;
 153         int         system_number;
 154         int         counter;
 155         int         PX, PY, PZ;
 156         int         number_of_systems;
 157         int         system_type;
 158         int         system_length;
 159         int         turncounter;
 160         Window      window;
 161         float      *system_color;
 162         GLfloat     initial_rotation;
 163         GLuint      valve, bolts, betweenbolts, elbowbolts, elbowcoins;
 164         GLuint      guagehead, guageface, guagedial, guageconnector;
 165         GLXContext *glx_context;
 166 } pipesstruct;
 167
 168 extern struct lwo LWO_BigValve, LWO_PipeBetweenBolts, LWO_Bolts3D;
 169 extern struct lwo LWO_GuageHead, LWO_GuageFace, LWO_GuageDial, LWO_GuageConnector;
 170 extern struct lwo LWO_ElbowBolts, LWO_ElbowCoins;
 171
 172 static float front_shininess[] =
 173 {60.0};
 174 static float front_specular[] =
 175 {0.7, 0.7, 0.7, 1.0};
 176 static float ambient0[] =
 177 {0.4, 0.4, 0.4, 1.0};
 178 static float diffuse0[] =
 179 {1.0, 1.0, 1.0, 1.0};
 180 static float ambient1[] =
 181 {0.2, 0.2, 0.2, 1.0};
 182 static float diffuse1[] =
 183 {0.5, 0.5, 0.5, 1.0};
 184 static float position0[] =
 185 {1.0, 1.0, 1.0, 0.0};
 186 static float position1[] =
 187 {-1.0, -1.0, 1.0, 0.0};
 188 static float lmodel_ambient[] =
 189 {0.5, 0.5, 0.5, 1.0};
 190 static float lmodel_twoside[] =
 191 {GL_TRUE};
 192
 193 static float MaterialRed[] =
 194 {0.7, 0.0, 0.0, 1.0};
 195 static float MaterialGreen[] =
 196 {0.1, 0.5, 0.2, 1.0};
 197 static float MaterialBlue[] =
 198 {0.0, 0.0, 0.7, 1.0};
 199 static float MaterialCyan[] =
 200 {0.2, 0.5, 0.7, 1.0};
 201 static float MaterialYellow[] =
 202 {0.7, 0.7, 0.0, 1.0};
 203 static float MaterialMagenta[] =
 204 {0.6, 0.2, 0.5, 1.0};
 205 static float MaterialWhite[] =
 206 {0.7, 0.7, 0.7, 1.0};
 207 static float MaterialGray[] =
 208 {0.2, 0.2, 0.2, 1.0};
 209
 210 static pipesstruct *pipes = NULL;
 211
 212
 213 static void
 214 MakeTube(ModeInfo *mi, int direction)
 215 {
 216         float       an;
 217         float       SINan_3, COSan_3;
 218
 219         /*dirUP    = 00000000 */
 220         /*dirDOWN  = 00000001 */
 221         /*dirLEFT  = 00000010 */
 222         /*dirRIGHT = 00000011 */
 223         /*dirNEAR  = 00000100 */
 224         /*dirFAR   = 00000101 */
 225
 226         if (!(direction & 4)) {
 227                 glRotatef(90.0, (direction & 2) ? 0.0 : 1.0,
 228                           (direction & 2) ? 1.0 : 0.0, 0.0);
 229         }
 230         glBegin(GL_QUAD_STRIP);
 231         for (an = 0.0; an <= 2.0 * M_PI; an += M_PI / 12.0) {
 232                 glNormal3f((COSan_3 = cos(an) / 3.0), (SINan_3 = sin(an) / 3.0), 0.0);
 233                 glVertex3f(COSan_3, SINan_3, one_third);
 234                 glVertex3f(COSan_3, SINan_3, -one_third);
 235         mi->polygon_count++;
 236         }
 237         glEnd();
 238 }
 239
 240 static void
 241 mySphere(float radius)
 242 {
 243         GLUquadricObj *quadObj;
 244
 245         quadObj = gluNewQuadric();
 246         gluQuadricDrawStyle(quadObj, (GLenum) GLU_FILL);
 247         gluSphere(quadObj, radius, 16, 16);
 248         gluDeleteQuadric(quadObj);
 249 }
 250
 251 static void
 252 myElbow(ModeInfo * mi, int bolted)
 253 {
 254 #define nsides 25
 255 #define rings 25
 256 #define r one_third
 257 #define R one_third
 258
 259         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 260
 261         int         i, j;
 262         GLfloat     p0[3], p1[3], p2[3], p3[3];
 263         GLfloat     n0[3], n1[3], n2[3], n3[3];
 264         GLfloat     COSphi, COSphi1, COStheta, COStheta1;
 265         GLfloat     _SINtheta, _SINtheta1;
 266
 267         for (i = 0; i <= rings / 4; i++) {
 268                 GLfloat     theta, theta1;
 269
 270                 theta = (GLfloat) i *2.0 * M_PI / rings;
 271
 272                 theta1 = (GLfloat) (i + 1) * 2.0 * M_PI / rings;
 273                 for (j = 0; j < nsides; j++) {
 274                         GLfloat     phi, phi1;
 275
 276                         phi = (GLfloat) j *2.0 * M_PI / nsides;
 277
 278                         phi1 = (GLfloat) (j + 1) * 2.0 * M_PI / nsides;
 279
 280                         p0[0] = (COStheta = cos(theta)) * (R + r * (COSphi = cos(phi)));
 281                         p0[1] = (_SINtheta = -sin(theta)) * (R + r * COSphi);
 282
 283                         p1[0] = (COStheta1 = cos(theta1)) * (R + r * COSphi);
 284                         p1[1] = (_SINtheta1 = -sin(theta1)) * (R + r * COSphi);
 285
 286                         p2[0] = COStheta1 * (R + r * (COSphi1 = cos(phi1)));
 287                         p2[1] = _SINtheta1 * (R + r * COSphi1);
 288
 289                         p3[0] = COStheta * (R + r * COSphi1);
 290                         p3[1] = _SINtheta * (R + r * COSphi1);
 291
 292                         n0[0] = COStheta * COSphi;
 293                         n0[1] = _SINtheta * COSphi;
 294
 295                         n1[0] = COStheta1 * COSphi;
 296                         n1[1] = _SINtheta1 * COSphi;
 297
 298                         n2[0] = COStheta1 * COSphi1;
 299                         n2[1] = _SINtheta1 * COSphi1;
 300
 301                         n3[0] = COStheta * COSphi1;
 302                         n3[1] = _SINtheta * COSphi1;
 303
 304                         p0[2] = p1[2] = r * (n0[2] = n1[2] = sin(phi));
 305                         p2[2] = p3[2] = r * (n2[2] = n3[2] = sin(phi1));
 306
 307                         glBegin(GL_QUADS);
 308                         glNormal3fv(n3);
 309                         glVertex3fv(p3);
 310                         glNormal3fv(n2);
 311                         glVertex3fv(p2);
 312                         glNormal3fv(n1);
 313                         glVertex3fv(p1);
 314                         glNormal3fv(n0);
 315                         glVertex3fv(p0);
 316             mi->polygon_count++;
 317                         glEnd();
 318                 }
 319         }
 320
 321         if (factory > 0 && bolted) {
 322                 /* Bolt the elbow onto the pipe system */
 323                 glFrontFace(GL_CW);
 324                 glPushMatrix();
 325                 glRotatef(90.0, 0.0, 0.0, -1.0);
 326                 glRotatef(90.0, 0.0, 1.0, 0.0);
 327                 glTranslatef(0.0, one_third, one_third);
 328                 glCallList(pp->elbowcoins);
 329         mi->polygon_count += LWO_ElbowCoins.num_pnts/3;
 330                 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 331                 glCallList(pp->elbowbolts);
 332         mi->polygon_count += LWO_ElbowBolts.num_pnts/3;
 333                 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 334                 glPopMatrix();
 335                 glFrontFace(GL_CCW);
 336         }
 337 #undef r
 338 #undef R
 339 #undef nsides
 340 #undef rings
 341 }
 342
 343 static void
 344 FindNeighbors(ModeInfo * mi)
 345 {
 346         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 347
 348         pp->ndirections = 0;
 349         pp->directions[dirUP] = (!pp->Cells[pp->PX][pp->PY + 1][pp->PZ]) ? 1 : 0;
 350         pp->ndirections += pp->directions[dirUP];
 351         pp->directions[dirDOWN] = (!pp->Cells[pp->PX][pp->PY - 1][pp->PZ]) ? 1 : 0;
 352         pp->ndirections += pp->directions[dirDOWN];
 353         pp->directions[dirLEFT] = (!pp->Cells[pp->PX - 1][pp->PY][pp->PZ]) ? 1 : 0;
 354         pp->ndirections += pp->directions[dirLEFT];
 355         pp->directions[dirRIGHT] = (!pp->Cells[pp->PX + 1][pp->PY][pp->PZ]) ? 1 : 0;
 356         pp->ndirections += pp->directions[dirRIGHT];
 357         pp->directions[dirFAR] = (!pp->Cells[pp->PX][pp->PY][pp->PZ - 1]) ? 1 : 0;
 358         pp->ndirections += pp->directions[dirFAR];
 359         pp->directions[dirNEAR] = (!pp->Cells[pp->PX][pp->PY][pp->PZ + 1]) ? 1 : 0;
 360         pp->ndirections += pp->directions[dirNEAR];
 361 }
 362
 363 static int
 364 SelectNeighbor(ModeInfo * mi)
 365 {
 366         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 367         int         dirlist[6];
 368         int         i, j;
 369
 370         for (i = 0, j = 0; i < 6; i++) {
 371                 if (pp->directions[i]) {
 372                         dirlist[j] = i;
 373                         j++;
 374                 }
 375         }
 376
 377         return dirlist[NRAND(pp->ndirections)];
 378 }
 379
 380 static void
 381 MakeValve(ModeInfo * mi, int newdir)
 382 {
 383         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 384
 385         /* There is a glPopMatrix() right after this subroutine returns. */
 386         switch (newdir) {
 387                 case dirUP:
 388                 case dirDOWN:
 389                         glRotatef(90.0, 1.0, 0.0, 0.0);
 390                         glRotatef(NRAND(3) * 90.0, 0.0, 0.0, 1.0);
 391                         break;
 392                 case dirLEFT:
 393                 case dirRIGHT:
 394                         glRotatef(90.0, 0.0, -1.0, 0.0);
 395                         glRotatef((NRAND(3) * 90.0) - 90.0, 0.0, 0.0, 1.0);
 396                         break;
 397                 case dirNEAR:
 398                 case dirFAR:
 399                         glRotatef(NRAND(4) * 90.0, 0.0, 0.0, 1.0);
 400                         break;
 401         }
 402         glFrontFace(GL_CW);
 403         glCallList(pp->betweenbolts);
 404     mi->polygon_count += LWO_PipeBetweenBolts.num_pnts/3;
 405         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 406         glCallList(pp->bolts);
 407     mi->polygon_count += LWO_Bolts3D.num_pnts/3;
 408         if (!MI_IS_MONO(mi)) {
 409                 if (pp->system_color == MaterialRed) {
 410                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialYellow : MaterialBlue);
 411                 } else if (pp->system_color == MaterialBlue) {
 412                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialRed : MaterialYellow);
 413                 } else if (pp->system_color == MaterialYellow) {
 414                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialBlue : MaterialRed);
 415                 } else {
 416                         switch ((NRAND(3))) {
 417                                 case 0:
 418                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialRed);
 419                                         break;
 420                                 case 1:
 421                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialBlue);
 422                                         break;
 423                                 case 2:
 424                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialYellow);
 425                         }
 426                 }
 427         }
 428         glRotatef((GLfloat) (NRAND(90)), 1.0, 0.0, 0.0);
 429         glCallList(pp->valve);
 430     mi->polygon_count += LWO_BigValve.num_pnts/3;
 431         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 432         glFrontFace(GL_CCW);
 433 }
 434
 435 static int
 436 MakeGuage(ModeInfo * mi, int newdir)
 437 {
 438         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 439
 440         /* Can't have a guage on a vertical pipe. */
 441         if ((newdir == dirUP) || (newdir == dirDOWN))
 442                 return (0);
 443
 444         /* Is there space above this pipe for a guage? */
 445         if (!pp->directions[dirUP])
 446                 return (0);
 447
 448         /* Yes!  Mark the space as used. */
 449         pp->Cells[pp->PX][pp->PY + 1][pp->PZ] = 1;
 450
 451         glFrontFace(GL_CW);
 452         glPushMatrix();
 453         if ((newdir == dirLEFT) || (newdir == dirRIGHT))
 454                 glRotatef(90.0, 0.0, 1.0, 0.0);
 455         glCallList(pp->betweenbolts);
 456     mi->polygon_count += LWO_PipeBetweenBolts.num_pnts/3;
 457         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 458         glCallList(pp->bolts);
 459     mi->polygon_count += LWO_Bolts3D.num_pnts/3;
 460         glPopMatrix();
 461
 462         glCallList(pp->guageconnector);
 463     mi->polygon_count += LWO_GuageConnector.num_pnts/3;
 464         glPushMatrix();
 465         glTranslatef(0.0, 1.33333, 0.0);
 466         /* Do not change the above to 1 + ONE_THIRD, because */
 467         /* the object really is centered on 1.3333300000. */
 468         glRotatef(NRAND(270) + 45.0, 0.0, 0.0, -1.0);
 469         /* Random rotation for the dial.  I love it. */
 470         glCallList(pp->guagedial);
 471     mi->polygon_count += LWO_GuageDial.num_pnts/3;
 472         glPopMatrix();
 473
 474         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 475         glCallList(pp->guagehead);
 476     mi->polygon_count += LWO_GuageHead.num_pnts/3;
 477
 478         /* GuageFace is drawn last, in case of low-res depth buffers. */
 479         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialWhite);
 480         glCallList(pp->guageface);
 481     mi->polygon_count += LWO_GuageFace.num_pnts/3;
 482
 483         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 484         glFrontFace(GL_CCW);
 485
 486         return (1);
 487 }
 488
 489 static void
 490 MakeShape(ModeInfo * mi, int newdir)
 491 {
 492         switch (NRAND(2)) {
 493                 case 1:
 494                         if (!MakeGuage(mi, newdir))
 495                                 MakeTube(mi, newdir);
 496                         break;
 497                 default:
 498                         MakeValve(mi, newdir);
 499                         break;
 500         }
 501 }
 502
 503 void
 504 reshape_pipes(ModeInfo * mi, int width, int height)
 505 {
 506         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 507
 508         glViewport(0, 0, pp->WindW = (GLint) width, pp->WindH = (GLint) height);
 509         glMatrixMode(GL_PROJECTION);
 510         glLoadIdentity();
 511         /*glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0); */
 512         gluPerspective(65.0, (GLfloat) width / (GLfloat) height, 0.1, 20.0);
 513         glMatrixMode(GL_MODELVIEW);
 514
 515   glClear(GL_COLOR_BUFFER_BIT);
 516 }
 517
 518 static void
 519 pinit(ModeInfo * mi, int zera)
 520 {
 521         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 522         int         X, Y, Z;
 523
 524     if (zera)
 525       mi->polygon_count = 0;
 526
 527         glClearDepth(1.0);
 528         glClearColor(0.0, 0.0, 0.0, 1.0);
 529         glColor3f(1.0, 1.0, 1.0);
 530
 531         glLightfv(GL_LIGHT0, GL_AMBIENT, ambient0);
 532         glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse0);
 533         glLightfv(GL_LIGHT0, GL_POSITION, position0);
 534         glLightfv(GL_LIGHT1, GL_AMBIENT, ambient1);
 535         glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse1);
 536         glLightfv(GL_LIGHT1, GL_POSITION, position1);
 537         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
 538         glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
 539         glEnable(GL_LIGHTING);
 540         glEnable(GL_LIGHT0);
 541         glEnable(GL_LIGHT1);
 542         glEnable(GL_DEPTH_TEST);
 543         glEnable(GL_NORMALIZE);
 544         glEnable(GL_CULL_FACE);
 545
 546         glShadeModel(GL_SMOOTH);
 547         glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, front_shininess);
 548         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_specular);
 549
 550         if (zera) {
 551                 pp->system_number = 1;
 552                 glDrawBuffer(dbuf_p ? GL_BACK : GL_FRONT);
 553                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 554                 (void) memset(pp->Cells, 0, sizeof (pp->Cells));
 555                 for (X = 0; X < HCELLS; X++) {
 556                         for (Y = 0; Y < VCELLS; Y++) {
 557                                 pp->Cells[X][Y][0] = 1;
 558                                 pp->Cells[X][Y][HCELLS - 1] = 1;
 559                                 pp->Cells[0][Y][X] = 1;
 560                                 pp->Cells[HCELLS - 1][Y][X] = 1;
 561                         }
 562                 }
 563                 for (X = 0; X < HCELLS; X++) {
 564                         for (Z = 0; Z < HCELLS; Z++) {
 565                                 pp->Cells[X][0][Z] = 1;
 566                                 pp->Cells[X][VCELLS - 1][Z] = 1;
 567                         }
 568                 }
 569                 (void) memset(pp->usedcolors, 0, sizeof (pp->usedcolors));
 570                 if ((pp->initial_rotation += 10.0) > 45.0) {
 571                         pp->initial_rotation -= 90.0;
 572                 }
 573         }
 574         pp->counter = 0;
 575         pp->turncounter = 0;
 576
 577         if (!MI_IS_MONO(mi)) {
 578                 int         collist[DEFINEDCOLORS];
 579                 int         i, j, lower = 1000;
 580
 581                 /* Avoid repeating colors on the same screen unless necessary */
 582                 for (i = 0; i < DEFINEDCOLORS; i++) {
 583                         if (lower > pp->usedcolors[i])
 584                                 lower = pp->usedcolors[i];
 585                 }
 586                 for (i = 0, j = 0; i < DEFINEDCOLORS; i++) {
 587                         if (pp->usedcolors[i] == lower) {
 588                                 collist[j] = i;
 589                                 j++;
 590                         }
 591                 }
 592                 i = collist[NRAND(j)];
 593                 pp->usedcolors[i]++;
 594                 switch (i) {
 595                         case 0:
 596                                 pp->system_color = MaterialRed;
 597                                 break;
 598                         case 1:
 599                                 pp->system_color = MaterialGreen;
 600                                 break;
 601                         case 2:
 602                                 pp->system_color = MaterialBlue;
 603                                 break;
 604                         case 3:
 605                                 pp->system_color = MaterialCyan;
 606                                 break;
 607                         case 4:
 608                                 pp->system_color = MaterialYellow;
 609                                 break;
 610                         case 5:
 611                                 pp->system_color = MaterialMagenta;
 612                                 break;
 613                         case 6:
 614                                 pp->system_color = MaterialWhite;
 615                                 break;
 616                 }
 617         } else {
 618                 pp->system_color = MaterialGray;
 619         }
 620
 621         do {
 622                 pp->PX = NRAND((HCELLS - 1)) + 1;
 623                 pp->PY = NRAND((VCELLS - 1)) + 1;
 624                 pp->PZ = NRAND((HCELLS - 1)) + 1;
 625         } while (pp->Cells[pp->PX][pp->PY][pp->PZ] ||
 626                  (pp->Cells[pp->PX + 1][pp->PY][pp->PZ] && pp->Cells[pp->PX - 1][pp->PY][pp->PZ] &&
 627                   pp->Cells[pp->PX][pp->PY + 1][pp->PZ] && pp->Cells[pp->PX][pp->PY - 1][pp->PZ] &&
 628                   pp->Cells[pp->PX][pp->PY][pp->PZ + 1] && pp->Cells[pp->PX][pp->PY][pp->PZ - 1]));
 629         pp->Cells[pp->PX][pp->PY][pp->PZ] = 1;
 630         pp->olddir = dirNone;
 631
 632         FindNeighbors(mi);
 633
 634         pp->nowdir = SelectNeighbor(mi);
 635 }
 636
 637 void
 638 init_pipes(ModeInfo * mi)
 639 {
 640         int         screen = MI_SCREEN(mi);
 641         pipesstruct *pp;
 642
 643         if (pipes == NULL) {
 644                 if ((pipes = (pipesstruct *) calloc(MI_NUM_SCREENS(mi),
 645                                               sizeof (pipesstruct))) == NULL)
 646                         return;
 647         }
 648         pp = &pipes[screen];
 649
 650         pp->window = MI_WINDOW(mi);
 651         if ((pp->glx_context = init_GL(mi)) != NULL) {
 652
 653                 reshape_pipes(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
 654                 if (rotatepipes)
 655                   pp->initial_rotation = NRAND(180); /* jwz */
 656                 else
 657                   pp->initial_rotation = -10.0;
 658                 pinit(mi, 1);
 659
 660                 if (factory > 0) {
 661                         pp->valve = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_BigValve);
 662                         pp->bolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_Bolts3D);
 663                         pp->betweenbolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_PipeBetweenBolts);
 664
 665                         pp->elbowbolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_ElbowBolts);
 666                         pp->elbowcoins = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_ElbowCoins);
 667
 668                         pp->guagehead = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageHead);
 669                         pp->guageface = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageFace);
 670                         pp->guagedial = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageDial);
 671                         pp->guageconnector = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageConnector);
 672                 }
 673                 /* else they are all 0, thanks to calloc(). */
 674
 675                 if (MI_COUNT(mi) < 1 || MI_COUNT(mi) > NofSysTypes + 1) {
 676                         pp->system_type = NRAND(NofSysTypes) + 1;
 677                 } else {
 678                         pp->system_type = MI_COUNT(mi);
 679                 }
 680
 681                 if (MI_CYCLES(mi) > 0 && MI_CYCLES(mi) < 11) {
 682                         pp->number_of_systems = MI_CYCLES(mi);
 683                 } else {
 684                         pp->number_of_systems = 5;
 685                 }
 686
 687                 if (MI_SIZE(mi) < 10) {
 688                         pp->system_length = 10;
 689                 } else if (MI_SIZE(mi) > 1000) {
 690                         pp->system_length = 1000;
 691                 } else {
 692                         pp->system_length = MI_SIZE(mi);
 693                 }
 694         } else {
 695                 MI_CLEARWINDOW(mi);
 696         }
 697 }
 698
 699 void
 700 draw_pipes(ModeInfo * mi)
 701 {
 702         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 703
 704         Display    *display = MI_DISPLAY(mi);
 705         Window      window = MI_WINDOW(mi);
 706
 707         int         newdir;
 708         int         OPX, OPY, OPZ;
 709
 710         if (!pp->glx_context)
 711                 return;
 712
 713         glPushMatrix();
 714
 715         glTranslatef(0.0, 0.0, fisheye ? -3.8 : -4.8);
 716         if (rotatepipes)
 717                 glRotatef(pp->initial_rotation, 0.0, 1.0, 0.0);
 718
 719         if (!MI_IS_ICONIC(mi)) {
 720                 /* Width/height ratio handled by gluPerspective() now. */
 721                 glScalef(Scale4Window, Scale4Window, Scale4Window);
 722         } else {
 723                 glScalef(Scale4Iconic, Scale4Iconic, Scale4Iconic);
 724         }
 725
 726         FindNeighbors(mi);
 727
 728         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 729
 730         /* If it's the begining of a system, draw a sphere */
 731         if (pp->olddir == dirNone) {
 732                 glPushMatrix();
 733                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 734                 mySphere(0.6);
 735                 glPopMatrix();
 736         }
 737         /* Check for stop conditions */
 738         if (pp->ndirections == 0 || pp->counter > pp->system_length) {
 739                 glPushMatrix();
 740                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 741                 /* Finish the system with another sphere */
 742                 mySphere(0.6);
 743
 744                 glPopMatrix();
 745
 746                 /* If the maximum number of system was drawn, restart (clearing the screen), */
 747                 /* else start a new system. */
 748                 if (++pp->system_number > pp->number_of_systems) {
 749           if (!mi->fps_p)
 750             sleep(1);
 751                         pinit(mi, 1);
 752                 } else {
 753                         pinit(mi, 0);
 754                 }
 755
 756                 glPopMatrix();
 757                 return;
 758         }
 759         pp->counter++;
 760         pp->turncounter++;
 761
 762         /* Do will the direction change? if so, determine the new one */
 763         newdir = pp->nowdir;
 764         if (!pp->directions[newdir]) {  /* cannot proceed in the current direction */
 765                 newdir = SelectNeighbor(mi);
 766         } else {
 767                 if (tightturns) {
 768                         /* random change (20% chance) */
 769                         if ((pp->counter > 1) && (NRAND(100) < 20)) {
 770                                 newdir = SelectNeighbor(mi);
 771                         }
 772                 } else {
 773                         /* Chance to turn increases after each length of pipe drawn */
 774                         if ((pp->counter > 1) && NRAND(50) < NRAND(pp->turncounter + 1)) {
 775                                 newdir = SelectNeighbor(mi);
 776                                 pp->turncounter = 0;
 777                         }
 778                 }
 779         }
 780
 781         /* Has the direction changed? */
 782         if (newdir == pp->nowdir) {
 783                 /* If not, draw the cell's center pipe */
 784                 glPushMatrix();
 785                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 786                 /* Chance of factory shape here, if enabled. */
 787                 if ((pp->counter > 1) && (NRAND(100) < factory)) {
 788                         MakeShape(mi, newdir);
 789                 } else {
 790                         MakeTube(mi, newdir);
 791                 }
 792                 glPopMatrix();
 793         } else {
 794                 /* If so, draw the cell's center elbow/sphere */
 795                 int         sysT = pp->system_type;
 796
 797                 if (sysT == NofSysTypes + 1) {
 798                         sysT = ((pp->system_number - 1) % NofSysTypes) + 1;
 799                 }
 800                 glPushMatrix();
 801
 802                 switch (sysT) {
 803                         case 1:
 804                                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 805                                 mySphere(elbowradius);
 806                                 break;
 807                         case 2:
 808                         case 3:
 809                                 switch (pp->nowdir) {
 810                                         case dirUP:
 811                                                 switch (newdir) {
 812                                                         case dirLEFT:
 813                                                                 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);
 814                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 815                                                                 break;
 816                                                         case dirRIGHT:
 817                                                                 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);
 818                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 819                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 820                                                                 break;
 821                                                         case dirFAR:
 822                                                                 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));
 823                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 824                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 825                                                                 break;
 826                                                         case dirNEAR:
 827                                                                 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));
 828                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 829                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 830                                                                 break;
 831                                                 }
 832                                                 break;
 833                                         case dirDOWN:
 834                                                 switch (newdir) {
 835                                                         case dirLEFT:
 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                                                                 break;
 838                                                         case dirRIGHT:
 839                                                                 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);
 840                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 841                                                                 break;
 842                                                         case dirFAR:
 843                                                                 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));
 844                                                                 glRotatef(270.0, 0.0, 1.0, 0.0);
 845                                                                 break;
 846                                                         case dirNEAR:
 847                                                                 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));
 848                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 849                                                                 break;
 850                                                 }
 851                                                 break;
 852                                         case dirLEFT:
 853                                                 switch (newdir) {
 854                                                         case dirUP:
 855                                                                 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);
 856                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 857                                                                 break;
 858                                                         case dirDOWN:
 859                                                                 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);
 860                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 861                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 862                                                                 break;
 863                                                         case dirFAR:
 864                                                                 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));
 865                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 866                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 867                                                                 break;
 868                                                         case dirNEAR:
 869                                                                 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));
 870                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 871                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 872                                                                 break;
 873                                                 }
 874                                                 break;
 875                                         case dirRIGHT:
 876                                                 switch (newdir) {
 877                                                         case dirUP:
 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                                                                 break;
 880                                                         case dirDOWN:
 881                                                                 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);
 882                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 883                                                                 break;
 884                                                         case dirFAR:
 885                                                                 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));
 886                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 887                                                                 break;
 888                                                         case dirNEAR:
 889                                                                 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));
 890                                                                 glRotatef(90.0, 1.0, 0.0, 0.0);
 891                                                                 break;
 892                                                 }
 893                                                 break;
 894                                         case dirNEAR:
 895                                                 switch (newdir) {
 896                                                         case dirLEFT:
 897                                                                 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));
 898                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 899                                                                 break;
 900                                                         case dirRIGHT:
 901                                                                 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));
 902                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 903                                                                 glRotatef(180.0, 0.0, 1.0, 0.0);
 904                                                                 break;
 905                                                         case dirUP:
 906                                                                 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));
 907                                                                 glRotatef(270.0, 0.0, 1.0, 0.0);
 908                                                                 break;
 909                                                         case dirDOWN:
 910                                                                 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));
 911                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 912                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 913                                                                 break;
 914                                                 }
 915                                                 break;
 916                                         case dirFAR:
 917                                                 switch (newdir) {
 918                                                         case dirUP:
 919                                                                 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));
 920                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 921                                                                 break;
 922                                                         case dirDOWN:
 923                                                                 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));
 924                                                                 glRotatef(90.0, 0.0, 1.0, 0.0);
 925                                                                 glRotatef(180.0, 1.0, 0.0, 0.0);
 926                                                                 break;
 927                                                         case dirLEFT:
 928                                                                 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));
 929                                                                 glRotatef(90.0, 1.0, 0.0, 0.0);
 930                                                                 break;
 931                                                         case dirRIGHT:
 932                                                                 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));
 933                                                                 glRotatef(270.0, 1.0, 0.0, 0.0);
 934                                                                 glRotatef(180.0, 0.0, 0.0, 1.0);
 935                                                                 break;
 936                                                 }
 937                                                 break;
 938                                 }
 939                                 myElbow(mi, (sysT == 2));
 940                                 break;
 941                 }
 942                 glPopMatrix();
 943         }
 944
 945         OPX = pp->PX;
 946         OPY = pp->PY;
 947         OPZ = pp->PZ;
 948         pp->olddir = pp->nowdir;
 949         pp->nowdir = newdir;
 950         switch (pp->nowdir) {
 951                 case dirUP:
 952                         pp->PY++;
 953                         break;
 954                 case dirDOWN:
 955                         pp->PY--;
 956                         break;
 957                 case dirLEFT:
 958                         pp->PX--;
 959                         break;
 960                 case dirRIGHT:
 961                         pp->PX++;
 962                         break;
 963                 case dirNEAR:
 964                         pp->PZ++;
 965                         break;
 966                 case dirFAR:
 967                         pp->PZ--;
 968                         break;
 969         }
 970         pp->Cells[pp->PX][pp->PY][pp->PZ] = 1;
 971
 972         /* Cells'face pipe */
 973         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);
 974         MakeTube(mi, newdir);
 975
 976         glPopMatrix();
 977
 978         glFlush();
 979
 980     if (dbuf_p)
 981       glXSwapBuffers(display, window);
 982
 983     if (mi->fps_p) do_fps (mi);
 984 }
 985
 986 void
 987 change_pipes(ModeInfo * mi)
 988 {
 989         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 990
 991         if (!pp->glx_context)
 992                 return;
 993
 994         glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(pp->glx_context));
 995         pinit(mi, 1);
 996 }
 997
 998 void
 999 release_pipes(ModeInfo * mi)
1000 {
1001         if (pipes != NULL) {
1002                 int         screen;
1003
1004                 for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
1005                         pipesstruct *pp = &pipes[screen];
1006
1007                         if (pp->glx_context) {
1008
1009                                 /* Display lists MUST be freed while their glXContext is current. */
1010                                 glXMakeCurrent(MI_DISPLAY(mi), pp->window, *(pp->glx_context));
1011
1012                                 if (pp->valve)
1013                                         glDeleteLists(pp->valve, 1);
1014                                 if (pp->bolts)
1015                                         glDeleteLists(pp->bolts, 1);
1016                                 if (pp->betweenbolts)
1017                                         glDeleteLists(pp->betweenbolts, 1);
1018
1019                                 if (pp->elbowbolts)
1020                                         glDeleteLists(pp->elbowbolts, 1);
1021                                 if (pp->elbowcoins)
1022                                         glDeleteLists(pp->elbowcoins, 1);
1023
1024                                 if (pp->guagehead)
1025                                         glDeleteLists(pp->guagehead, 1);
1026                                 if (pp->guageface)
1027                                         glDeleteLists(pp->guageface, 1);
1028                                 if (pp->guagedial)
1029                                         glDeleteLists(pp->guagedial, 1);
1030                                 if (pp->guageconnector)
1031                                         glDeleteLists(pp->guageconnector, 1);
1032                         }
1033                 }
1034
1035                 (void) free((void *) pipes);
1036                 pipes = NULL;
1037         }
1038         FreeAllGL(mi);
1039 }
1040
1041 #endif