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 !defined( lint ) && !defined( SABER )
   5 static const char sccsid[] = "@(#)pipes.c       4.07 97/11/24 xlockmore";
   6
   7 #endif
   8
   9 /*-
  10  * Permission to use, copy, modify, and distribute this software and its
  11  * documentation for any purpose and without fee is hereby granted,
  12  * provided that the above copyright notice appear in all copies and that
  13  * both that copyright notice and this permission notice appear in
  14  * supporting documentation.
  15  *
  16  * This file is provided AS IS with no warranties of any kind.  The author
  17  * shall have no liability with respect to the infringement of copyrights,
  18  * trade secrets or any patents by this file or any part thereof.  In no
  19  * event will the author be liable for any lost revenue or profits or
  20  * other special, indirect and consequential damages.
  21  *
  22  * This program was inspired on a WindowsNT(R)'s screen saver. It was written
  23  * from scratch and it was not based on any other source code.
  24  *
  25  * ==========================================================================
  26  * The routine myElbow is derivated from the doughnut routine from the MesaGL
  27  * library (more especifically the Mesaaux library) written by Brian Paul.
  28  * ==========================================================================
  29  *
  30  * Thanks goes to Brian Paul for making it possible and inexpensive to use
  31  * OpenGL at home.
  32  *
  33  * Since I'm not a native English speaker, my apologies for any grammatical
  34  * mistake.
  35  *
  36  * My e-mail addresses are
  37  *
  38  * vianna@cat.cbpf.br
  39  *         and
  40  * m-vianna@usa.net
  41  * Marcelo F. Vianna (Apr-09-1997)
  42  *
  43  * Revision History:
  44  * 29-Apr-97: Factory equipment by Ed Mackey.  Productive day today, eh?
  45  * 29-Apr-97: Less tight turns Jeff Epler <jepler@inetnebr.com>
  46  * 29-Apr-97: Efficiency speed-ups by Marcelo F. Vianna
  47  */
  48
  49 /*-
  50  * due to a Bug/feature in VMS X11/Intrinsic.h has to be placed before xlock.
  51  * otherwise caddr_t is not defined correctly
  52  */
  53
  54 #include <X11/Intrinsic.h>
  55
  56 #ifdef STANDALONE
  57 # define PROGCLASS                                      "Pipes"
  58 # define HACK_INIT                                      init_pipes
  59 # define HACK_DRAW                                      draw_pipes
  60 # define pipes_opts                                     xlockmore_opts
  61 # define DEFAULTS       "*delay:                100     \n"                     \
  62                                         "*count:                2       \n"                     \
  63                                         "*cycles:               5       \n"                     \
  64                                         "*size:                 500     \n"                     \
  65                                         "*fisheye:              True    \n"                     \
  66                                         "*tightturns:   False   \n"                     \
  67                                         "*rotatepipes:  True    \n"                     \
  68                                         "*noBuffer:             True    \n"
  69 # include "xlockmore.h"                         /* from the xscreensaver distribution */
  70 #else  /* !STANDALONE */
  71 # include "xlock.h"                                     /* from the xlockmore distribution */
  72 #endif /* !STANDALONE */
  73
  74 #ifdef USE_GL
  75
  76 #include <GL/glu.h>
  77 #include "buildlwo.h"
  78
  79 #define DEF_FACTORY     "2"
  80 #define DEF_FISHEYE     "True"
  81 #define DEF_TIGHTTURNS  "False"
  82 #define DEF_ROTATEPIPES "True"
  83 #define NofSysTypes     3
  84
  85 static int  factory;
  86 static Bool fisheye, tightturns, rotatepipes;
  87
  88 static XrmOptionDescRec opts[] =
  89 {
  90         {"-factory", ".pipes.factory", XrmoptionSepArg, (caddr_t) NULL},
  91         {"-fisheye", ".pipes.fisheye", XrmoptionNoArg, (caddr_t) "on"},
  92         {"+fisheye", ".pipes.fisheye", XrmoptionNoArg, (caddr_t) "off"},
  93         {"-tightturns", ".pipes.tightturns", XrmoptionNoArg, (caddr_t) "on"},
  94         {"+tightturns", ".pipes.tightturns", XrmoptionNoArg, (caddr_t) "off"},
  95       {"-rotatepipes", ".pipes.rotatepipes", XrmoptionNoArg, (caddr_t) "on"},
  96       {"+rotatepipes", ".pipes.rotatepipes", XrmoptionNoArg, (caddr_t) "off"}
  97 };
  98 static argtype vars[] =
  99 {
 100         {(caddr_t *) & factory, "factory", "Factory", DEF_FACTORY, t_Int},
 101         {(caddr_t *) & fisheye, "fisheye", "Fisheye", DEF_FISHEYE, t_Bool},
 102         {(caddr_t *) & tightturns, "tightturns", "Tightturns", DEF_TIGHTTURNS, t_Bool},
 103         {(caddr_t *) & rotatepipes, "rotatepipes", "Rotatepipes", DEF_ROTATEPIPES, t_Bool}
 104 };
 105 static OptionStruct desc[] =
 106 {
 107         {"-factory num", "how much extra equipment in pipes (0 for none)"},
 108         {"-/+fisheye", "turn on/off zoomed-in view of pipes"},
 109         {"-/+tightturns", "turn on/off tight turns"},
 110         {"-/+rotatepipes", "turn on/off pipe system rotation per screenful"}
 111 };
 112
 113 ModeSpecOpt pipes_opts =
 114 {sizeof opts / sizeof opts[0], opts, sizeof vars / sizeof vars[0], vars, desc};
 115
 116 #ifdef USE_MODULES
 117 ModStruct   pipes_description =
 118 {"pipes", "init_pipes", "draw_pipes", "release_pipes",
 119 #if defined( MESA ) && defined( SLOW )
 120  "draw_pipes",
 121 #else
 122  "change_pipes",
 123 #endif
 124  "change_pipes", NULL, &pipes_opts,
 125  1000, 2, 5, 500, 4, 1.0, "",
 126  "Shows a selfbuilding pipe system", 0, NULL};
 127
 128 #endif
 129
 130 #define Scale4Window               0.1
 131 #define Scale4Iconic               0.07
 132
 133 #define one_third                  0.3333333333333333333
 134
 135 #define dirNone -1
 136 #define dirUP 0
 137 #define dirDOWN 1
 138 #define dirLEFT 2
 139 #define dirRIGHT 3
 140 #define dirNEAR 4
 141 #define dirFAR 5
 142
 143 #define HCELLS 33
 144 #define VCELLS 25
 145 #define DEFINEDCOLORS 7
 146 #define elbowradius 0.5
 147
 148 /*************************************************************************/
 149
 150 typedef struct {
 151 #if defined( MESA ) && defined( SLOW )
 152         int         flip;
 153 #endif
 154         GLint       WindH, WindW;
 155         int         Cells[HCELLS][VCELLS][HCELLS];
 156         int         usedcolors[DEFINEDCOLORS];
 157         int         directions[6];
 158         int         ndirections;
 159         int         nowdir, olddir;
 160         int         system_number;
 161         int         counter;
 162         int         PX, PY, PZ;
 163         int         number_of_systems;
 164         int         system_type;
 165         int         system_length;
 166         int         turncounter;
 167         Window      window;
 168         float      *system_color;
 169         GLfloat     initial_rotation;
 170         GLuint      valve, bolts, betweenbolts, elbowbolts, elbowcoins;
 171         GLuint      guagehead, guageface, guagedial, guageconnector;
 172         GLXContext *glx_context;
 173 } pipesstruct;
 174
 175 extern struct lwo LWO_BigValve, LWO_PipeBetweenBolts, LWO_Bolts3D;
 176 extern struct lwo LWO_GuageHead, LWO_GuageFace, LWO_GuageDial, LWO_GuageConnector;
 177 extern struct lwo LWO_ElbowBolts, LWO_ElbowCoins;
 178
 179 static float front_shininess[] =
 180 {60.0};
 181 static float front_specular[] =
 182 {0.7, 0.7, 0.7, 1.0};
 183 static float ambient0[] =
 184 {0.4, 0.4, 0.4, 1.0};
 185 static float diffuse0[] =
 186 {1.0, 1.0, 1.0, 1.0};
 187 static float ambient1[] =
 188 {0.2, 0.2, 0.2, 1.0};
 189 static float diffuse1[] =
 190 {0.5, 0.5, 0.5, 1.0};
 191 static float position0[] =
 192 {1.0, 1.0, 1.0, 0.0};
 193 static float position1[] =
 194 {-1.0, -1.0, 1.0, 0.0};
 195 static float lmodel_ambient[] =
 196 {0.5, 0.5, 0.5, 1.0};
 197 static float lmodel_twoside[] =
 198 {GL_TRUE};
 199
 200 static float MaterialRed[] =
 201 {0.7, 0.0, 0.0, 1.0};
 202 static float MaterialGreen[] =
 203 {0.1, 0.5, 0.2, 1.0};
 204 static float MaterialBlue[] =
 205 {0.0, 0.0, 0.7, 1.0};
 206 static float MaterialCyan[] =
 207 {0.2, 0.5, 0.7, 1.0};
 208 static float MaterialYellow[] =
 209 {0.7, 0.7, 0.0, 1.0};
 210 static float MaterialMagenta[] =
 211 {0.6, 0.2, 0.5, 1.0};
 212 static float MaterialWhite[] =
 213 {0.7, 0.7, 0.7, 1.0};
 214 static float MaterialGray[] =
 215 {0.2, 0.2, 0.2, 1.0};
 216
 217 static pipesstruct *pipes = NULL;
 218
 219
 220 static void
 221 MakeTube(int direction)
 222 {
 223         float       an;
 224         float       SINan_3, COSan_3;
 225
 226         /*dirUP    = 00000000 */
 227         /*dirDOWN  = 00000001 */
 228         /*dirLEFT  = 00000010 */
 229         /*dirRIGHT = 00000011 */
 230         /*dirNEAR  = 00000100 */
 231         /*dirFAR   = 00000101 */
 232
 233         if (!(direction & 4)) {
 234                 glRotatef(90.0, (direction & 2) ? 0.0 : 1.0,
 235                           (direction & 2) ? 1.0 : 0.0, 0.0);
 236         }
 237         glBegin(GL_QUAD_STRIP);
 238         for (an = 0.0; an <= 2.0 * M_PI; an += M_PI / 12.0) {
 239                 glNormal3f((COSan_3 = cos(an) / 3.0), (SINan_3 = sin(an) / 3.0), 0.0);
 240                 glVertex3f(COSan_3, SINan_3, one_third);
 241                 glVertex3f(COSan_3, SINan_3, -one_third);
 242         }
 243         glEnd();
 244 }
 245
 246 static void
 247 mySphere(float radius)
 248 {
 249         GLUquadricObj *quadObj;
 250
 251         quadObj = gluNewQuadric();
 252         gluQuadricDrawStyle(quadObj, (GLenum) GLU_FILL);
 253         gluSphere(quadObj, radius, 16, 16);
 254         gluDeleteQuadric(quadObj);
 255 }
 256
 257 static void
 258 myElbow(ModeInfo * mi, int bolted)
 259 {
 260 #define nsides 25
 261 #define rings 25
 262 #define r one_third
 263 #define R one_third
 264
 265         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 266
 267         int         i, j;
 268         GLfloat     p0[3], p1[3], p2[3], p3[3];
 269         GLfloat     n0[3], n1[3], n2[3], n3[3];
 270         GLfloat     COSphi, COSphi1, COStheta, COStheta1;
 271         GLfloat     _SINtheta, _SINtheta1;
 272
 273         for (i = 0; i <= rings / 4; i++) {
 274                 GLfloat     theta, theta1;
 275
 276                 theta = (GLfloat) i *2.0 * M_PI / rings;
 277
 278                 theta1 = (GLfloat) (i + 1) * 2.0 * M_PI / rings;
 279                 for (j = 0; j < nsides; j++) {
 280                         GLfloat     phi, phi1;
 281
 282                         phi = (GLfloat) j *2.0 * M_PI / nsides;
 283
 284                         phi1 = (GLfloat) (j + 1) * 2.0 * M_PI / nsides;
 285
 286                         p0[0] = (COStheta = cos(theta)) * (R + r * (COSphi = cos(phi)));
 287                         p0[1] = (_SINtheta = -sin(theta)) * (R + r * COSphi);
 288
 289                         p1[0] = (COStheta1 = cos(theta1)) * (R + r * COSphi);
 290                         p1[1] = (_SINtheta1 = -sin(theta1)) * (R + r * COSphi);
 291
 292                         p2[0] = COStheta1 * (R + r * (COSphi1 = cos(phi1)));
 293                         p2[1] = _SINtheta1 * (R + r * COSphi1);
 294
 295                         p3[0] = COStheta * (R + r * COSphi1);
 296                         p3[1] = _SINtheta * (R + r * COSphi1);
 297
 298                         n0[0] = COStheta * COSphi;
 299                         n0[1] = _SINtheta * COSphi;
 300
 301                         n1[0] = COStheta1 * COSphi;
 302                         n1[1] = _SINtheta1 * COSphi;
 303
 304                         n2[0] = COStheta1 * COSphi1;
 305                         n2[1] = _SINtheta1 * COSphi1;
 306
 307                         n3[0] = COStheta * COSphi1;
 308                         n3[1] = _SINtheta * COSphi1;
 309
 310                         p0[2] = p1[2] = r * (n0[2] = n1[2] = sin(phi));
 311                         p2[2] = p3[2] = r * (n2[2] = n3[2] = sin(phi1));
 312
 313                         glBegin(GL_QUADS);
 314                         glNormal3fv(n3);
 315                         glVertex3fv(p3);
 316                         glNormal3fv(n2);
 317                         glVertex3fv(p2);
 318                         glNormal3fv(n1);
 319                         glVertex3fv(p1);
 320                         glNormal3fv(n0);
 321                         glVertex3fv(p0);
 322                         glEnd();
 323                 }
 324         }
 325
 326         if (factory > 0 && bolted) {
 327                 /* Bolt the elbow onto the pipe system */
 328                 glFrontFace(GL_CW);
 329                 glPushMatrix();
 330                 glRotatef(90.0, 0.0, 0.0, -1.0);
 331                 glRotatef(90.0, 0.0, 1.0, 0.0);
 332                 glTranslatef(0.0, one_third, one_third);
 333                 glCallList(pp->elbowcoins);
 334                 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 335                 glCallList(pp->elbowbolts);
 336                 glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 337                 glPopMatrix();
 338                 glFrontFace(GL_CCW);
 339         }
 340 #undef r
 341 #undef R
 342 #undef nsides
 343 #undef rings
 344 }
 345
 346 static void
 347 FindNeighbors(ModeInfo * mi)
 348 {
 349         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 350
 351         pp->ndirections = 0;
 352         pp->directions[dirUP] = (!pp->Cells[pp->PX][pp->PY + 1][pp->PZ]) ? 1 : 0;
 353         pp->ndirections += pp->directions[dirUP];
 354         pp->directions[dirDOWN] = (!pp->Cells[pp->PX][pp->PY - 1][pp->PZ]) ? 1 : 0;
 355         pp->ndirections += pp->directions[dirDOWN];
 356         pp->directions[dirLEFT] = (!pp->Cells[pp->PX - 1][pp->PY][pp->PZ]) ? 1 : 0;
 357         pp->ndirections += pp->directions[dirLEFT];
 358         pp->directions[dirRIGHT] = (!pp->Cells[pp->PX + 1][pp->PY][pp->PZ]) ? 1 : 0;
 359         pp->ndirections += pp->directions[dirRIGHT];
 360         pp->directions[dirFAR] = (!pp->Cells[pp->PX][pp->PY][pp->PZ - 1]) ? 1 : 0;
 361         pp->ndirections += pp->directions[dirFAR];
 362         pp->directions[dirNEAR] = (!pp->Cells[pp->PX][pp->PY][pp->PZ + 1]) ? 1 : 0;
 363         pp->ndirections += pp->directions[dirNEAR];
 364 }
 365
 366 static int
 367 SelectNeighbor(ModeInfo * mi)
 368 {
 369         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 370         int         dirlist[6];
 371         int         i, j;
 372
 373         for (i = 0, j = 0; i < 6; i++) {
 374                 if (pp->directions[i]) {
 375                         dirlist[j] = i;
 376                         j++;
 377                 }
 378         }
 379
 380         return dirlist[NRAND(pp->ndirections)];
 381 }
 382
 383 static void
 384 MakeValve(ModeInfo * mi, int newdir)
 385 {
 386         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 387
 388         /* There is a glPopMatrix() right after this subroutine returns. */
 389         switch (newdir) {
 390                 case dirUP:
 391                 case dirDOWN:
 392                         glRotatef(90.0, 1.0, 0.0, 0.0);
 393                         glRotatef(NRAND(3) * 90.0, 0.0, 0.0, 1.0);
 394                         break;
 395                 case dirLEFT:
 396                 case dirRIGHT:
 397                         glRotatef(90.0, 0.0, -1.0, 0.0);
 398                         glRotatef((NRAND(3) * 90.0) - 90.0, 0.0, 0.0, 1.0);
 399                         break;
 400                 case dirNEAR:
 401                 case dirFAR:
 402                         glRotatef(NRAND(4) * 90.0, 0.0, 0.0, 1.0);
 403                         break;
 404         }
 405         glFrontFace(GL_CW);
 406         glCallList(pp->betweenbolts);
 407         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 408         glCallList(pp->bolts);
 409         if (!MI_IS_MONO(mi)) {
 410                 if (pp->system_color == MaterialRed) {
 411                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialYellow : MaterialBlue);
 412                 } else if (pp->system_color == MaterialBlue) {
 413                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialRed : MaterialYellow);
 414                 } else if (pp->system_color == MaterialYellow) {
 415                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, NRAND(2) ? MaterialBlue : MaterialRed);
 416                 } else {
 417                         switch ((NRAND(3))) {
 418                                 case 0:
 419                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialRed);
 420                                         break;
 421                                 case 1:
 422                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialBlue);
 423                                         break;
 424                                 case 2:
 425                                         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialYellow);
 426                         }
 427                 }
 428         }
 429         glRotatef((GLfloat) (NRAND(90)), 1.0, 0.0, 0.0);
 430         glCallList(pp->valve);
 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         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialGray);
 457         glCallList(pp->bolts);
 458         glPopMatrix();
 459
 460         glCallList(pp->guageconnector);
 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         glPopMatrix();
 469
 470         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 471         glCallList(pp->guagehead);
 472
 473         /* GuageFace is drawn last, in case of low-res depth buffers. */
 474         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, MaterialWhite);
 475         glCallList(pp->guageface);
 476
 477         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 478         glFrontFace(GL_CCW);
 479
 480         return (1);
 481 }
 482
 483 static void
 484 MakeShape(ModeInfo * mi, int newdir)
 485 {
 486         switch (NRAND(2)) {
 487                 case 1:
 488                         if (!MakeGuage(mi, newdir))
 489                                 MakeTube(newdir);
 490                         break;
 491                 default:
 492                         MakeValve(mi, newdir);
 493                         break;
 494         }
 495 }
 496
 497 static void
 498 reshape(ModeInfo * mi, int width, int height)
 499 {
 500         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 501
 502         glViewport(0, 0, pp->WindW = (GLint) width, pp->WindH = (GLint) height);
 503         glMatrixMode(GL_PROJECTION);
 504         glLoadIdentity();
 505         /*glFrustum(-1.0, 1.0, -1.0, 1.0, 5.0, 15.0); */
 506         gluPerspective(65.0, (GLfloat) width / (GLfloat) height, 0.1, 20.0);
 507         glMatrixMode(GL_MODELVIEW);
 508 }
 509
 510 static void
 511 pinit(ModeInfo * mi, int zera)
 512 {
 513         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 514         int         X, Y, Z;
 515
 516         glClearDepth(1.0);
 517         glClearColor(0.0, 0.0, 0.0, 1.0);
 518         glColor3f(1.0, 1.0, 1.0);
 519
 520         glLightfv(GL_LIGHT0, GL_AMBIENT, ambient0);
 521         glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse0);
 522         glLightfv(GL_LIGHT0, GL_POSITION, position0);
 523         glLightfv(GL_LIGHT1, GL_AMBIENT, ambient1);
 524         glLightfv(GL_LIGHT1, GL_DIFFUSE, diffuse1);
 525         glLightfv(GL_LIGHT1, GL_POSITION, position1);
 526         glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient);
 527         glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside);
 528         glEnable(GL_LIGHTING);
 529         glEnable(GL_LIGHT0);
 530         glEnable(GL_LIGHT1);
 531         glEnable(GL_DEPTH_TEST);
 532         glEnable(GL_NORMALIZE);
 533         glEnable(GL_CULL_FACE);
 534
 535         glShadeModel(GL_SMOOTH);
 536         glMaterialfv(GL_FRONT_AND_BACK, GL_SHININESS, front_shininess);
 537         glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_specular);
 538
 539         if (zera) {
 540                 pp->system_number = 1;
 541                 glDrawBuffer(GL_FRONT_AND_BACK);
 542                 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 543                 (void) memset(pp->Cells, 0, sizeof (pp->Cells));
 544                 for (X = 0; X < HCELLS; X++) {
 545                         for (Y = 0; Y < VCELLS; Y++) {
 546                                 pp->Cells[X][Y][0] = 1;
 547                                 pp->Cells[X][Y][HCELLS - 1] = 1;
 548                                 pp->Cells[0][Y][X] = 1;
 549                                 pp->Cells[HCELLS - 1][Y][X] = 1;
 550                         }
 551                 }
 552                 for (X = 0; X < HCELLS; X++) {
 553                         for (Z = 0; Z < HCELLS; Z++) {
 554                                 pp->Cells[X][0][Z] = 1;
 555                                 pp->Cells[X][VCELLS - 1][Z] = 1;
 556                         }
 557                 }
 558                 (void) memset(pp->usedcolors, 0, sizeof (pp->usedcolors));
 559                 if ((pp->initial_rotation += 10.0) > 45.0) {
 560                         pp->initial_rotation -= 90.0;
 561                 }
 562         }
 563         pp->counter = 0;
 564         pp->turncounter = 0;
 565
 566         if (!MI_IS_MONO(mi)) {
 567                 int         collist[DEFINEDCOLORS];
 568                 int         i, j, lower = 1000;
 569
 570                 /* Avoid repeating colors on the same screen unless necessary */
 571                 for (i = 0; i < DEFINEDCOLORS; i++) {
 572                         if (lower > pp->usedcolors[i])
 573                                 lower = pp->usedcolors[i];
 574                 }
 575                 for (i = 0, j = 0; i < DEFINEDCOLORS; i++) {
 576                         if (pp->usedcolors[i] == lower) {
 577                                 collist[j] = i;
 578                                 j++;
 579                         }
 580                 }
 581                 i = collist[NRAND(j)];
 582                 pp->usedcolors[i]++;
 583                 switch (i) {
 584                         case 0:
 585                                 pp->system_color = MaterialRed;
 586                                 break;
 587                         case 1:
 588                                 pp->system_color = MaterialGreen;
 589                                 break;
 590                         case 2:
 591                                 pp->system_color = MaterialBlue;
 592                                 break;
 593                         case 3:
 594                                 pp->system_color = MaterialCyan;
 595                                 break;
 596                         case 4:
 597                                 pp->system_color = MaterialYellow;
 598                                 break;
 599                         case 5:
 600                                 pp->system_color = MaterialMagenta;
 601                                 break;
 602                         case 6:
 603                                 pp->system_color = MaterialWhite;
 604                                 break;
 605                 }
 606         } else {
 607                 pp->system_color = MaterialGray;
 608         }
 609
 610         do {
 611                 pp->PX = NRAND((HCELLS - 1)) + 1;
 612                 pp->PY = NRAND((VCELLS - 1)) + 1;
 613                 pp->PZ = NRAND((HCELLS - 1)) + 1;
 614         } while (pp->Cells[pp->PX][pp->PY][pp->PZ] ||
 615                  (pp->Cells[pp->PX + 1][pp->PY][pp->PZ] && pp->Cells[pp->PX - 1][pp->PY][pp->PZ] &&
 616                   pp->Cells[pp->PX][pp->PY + 1][pp->PZ] && pp->Cells[pp->PX][pp->PY - 1][pp->PZ] &&
 617                   pp->Cells[pp->PX][pp->PY][pp->PZ + 1] && pp->Cells[pp->PX][pp->PY][pp->PZ - 1]));
 618         pp->Cells[pp->PX][pp->PY][pp->PZ] = 1;
 619         pp->olddir = dirNone;
 620
 621         FindNeighbors(mi);
 622
 623         pp->nowdir = SelectNeighbor(mi);
 624 }
 625
 626 void
 627 init_pipes(ModeInfo * mi)
 628 {
 629         int         screen = MI_SCREEN(mi);
 630         pipesstruct *pp;
 631
 632         if (pipes == NULL) {
 633                 if ((pipes = (pipesstruct *) calloc(MI_NUM_SCREENS(mi),
 634                                               sizeof (pipesstruct))) == NULL)
 635                         return;
 636         }
 637         pp = &pipes[screen];
 638
 639         pp->window = MI_WINDOW(mi);
 640         if ((pp->glx_context = init_GL(mi)) != NULL) {
 641
 642                 reshape(mi, MI_WIDTH(mi), MI_HEIGHT(mi));
 643                 if (rotatepipes)
 644                   pp->initial_rotation = NRAND(180); /* jwz */
 645                 else
 646                   pp->initial_rotation = -10.0;
 647                 pinit(mi, 1);
 648
 649                 if (factory > 0) {
 650                         pp->valve = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_BigValve);
 651                         pp->bolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_Bolts3D);
 652                         pp->betweenbolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_PipeBetweenBolts);
 653
 654                         pp->elbowbolts = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_ElbowBolts);
 655                         pp->elbowcoins = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_ElbowCoins);
 656
 657                         pp->guagehead = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageHead);
 658                         pp->guageface = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageFace);
 659                         pp->guagedial = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageDial);
 660                         pp->guageconnector = BuildLWO(MI_IS_WIREFRAME(mi), &LWO_GuageConnector);
 661                 }
 662                 /* else they are all 0, thanks to calloc(). */
 663
 664                 if (MI_COUNT(mi) < 1 || MI_COUNT(mi) > NofSysTypes + 1) {
 665                         pp->system_type = NRAND(NofSysTypes) + 1;
 666                 } else {
 667                         pp->system_type = MI_COUNT(mi);
 668                 }
 669
 670                 if (MI_CYCLES(mi) > 0 && MI_CYCLES(mi) < 11) {
 671                         pp->number_of_systems = MI_CYCLES(mi);
 672                 } else {
 673                         pp->number_of_systems = 5;
 674                 }
 675
 676                 if (MI_SIZE(mi) < 10) {
 677                         pp->system_length = 10;
 678                 } else if (MI_SIZE(mi) > 1000) {
 679                         pp->system_length = 1000;
 680                 } else {
 681                         pp->system_length = MI_SIZE(mi);
 682                 }
 683         } else {
 684                 MI_CLEARWINDOW(mi);
 685         }
 686 }
 687
 688 void
 689 draw_pipes(ModeInfo * mi)
 690 {
 691         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 692
 693         Display    *display = MI_DISPLAY(mi);
 694         Window      window = MI_WINDOW(mi);
 695
 696         int         newdir;
 697         int         OPX, OPY, OPZ;
 698
 699         if (!pp->glx_context)
 700                 return;
 701
 702         glXMakeCurrent(display, window, *(pp->glx_context));
 703
 704 #if defined( MESA ) && defined( SLOW )
 705         glDrawBuffer(GL_BACK);
 706 #else
 707         glDrawBuffer(GL_FRONT);
 708 #endif
 709         glPushMatrix();
 710
 711         glTranslatef(0.0, 0.0, fisheye ? -3.8 : -4.8);
 712         if (rotatepipes)
 713                 glRotatef(pp->initial_rotation, 0.0, 1.0, 0.0);
 714
 715         if (!MI_IS_ICONIC(mi)) {
 716                 /* Width/height ratio handled by gluPerspective() now. */
 717                 glScalef(Scale4Window, Scale4Window, Scale4Window);
 718         } else {
 719                 glScalef(Scale4Iconic, Scale4Iconic, Scale4Iconic);
 720         }
 721
 722         FindNeighbors(mi);
 723
 724         glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, pp->system_color);
 725
 726         /* If it's the begining of a system, draw a sphere */
 727         if (pp->olddir == dirNone) {
 728                 glPushMatrix();
 729                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 730                 mySphere(0.6);
 731                 glPopMatrix();
 732         }
 733         /* Check for stop conditions */
 734         if (pp->ndirections == 0 || pp->counter > pp->system_length) {
 735                 glPushMatrix();
 736                 glTranslatef((pp->PX - 16) / 3.0 * 4.0, (pp->PY - 12) / 3.0 * 4.0, (pp->PZ - 16) / 3.0 * 4.0);
 737                 /* Finish the system with another sphere */
 738                 mySphere(0.6);
 739 #if defined( MESA ) && defined( SLOW )
 740                 glXSwapBuffers(display, window);
 741 #endif
 742                 glPopMatrix();
 743
 744                 /* If the maximum number of system was drawn, restart (clearing the screen), */
 745                 /* else start a new system. */
 746                 if (++pp->system_number > pp->number_of_systems) {
 747                         (void) 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(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(newdir);
 972
 973         glPopMatrix();
 974
 975         glFlush();
 976
 977 #if defined( MESA ) && defined( SLOW )
 978         pp->flip = !pp->flip;
 979         if (pp->flip)
 980                 glXSwapBuffers(display, window);
 981 #endif
 982 }
 983
 984 void
 985 change_pipes(ModeInfo * mi)
 986 {
 987         pipesstruct *pp = &pipes[MI_SCREEN(mi)];
 988
 989         if (!pp->glx_context)
 990                 return;
 991
 992         glXMakeCurrent(MI_DISPLAY(mi), MI_WINDOW(mi), *(pp->glx_context));
 993         pinit(mi, 1);
 994 }
 995
 996 void
 997 release_pipes(ModeInfo * mi)
 998 {
 999         if (pipes != NULL) {
1000                 int         screen;
1001
1002                 for (screen = 0; screen < MI_NUM_SCREENS(mi); screen++) {
1003                         pipesstruct *pp = &pipes[screen];
1004
1005                         if (pp->glx_context) {
1006
1007                                 /* Display lists MUST be freed while their glXContext is current. */
1008                                 glXMakeCurrent(MI_DISPLAY(mi), pp->window, *(pp->glx_context));
1009
1010                                 if (pp->valve)
1011                                         glDeleteLists(pp->valve, 1);
1012                                 if (pp->bolts)
1013                                         glDeleteLists(pp->bolts, 1);
1014                                 if (pp->betweenbolts)
1015                                         glDeleteLists(pp->betweenbolts, 1);
1016
1017                                 if (pp->elbowbolts)
1018                                         glDeleteLists(pp->elbowbolts, 1);
1019                                 if (pp->elbowcoins)
1020                                         glDeleteLists(pp->elbowcoins, 1);
1021
1022                                 if (pp->guagehead)
1023                                         glDeleteLists(pp->guagehead, 1);
1024                                 if (pp->guageface)
1025                                         glDeleteLists(pp->guageface, 1);
1026                                 if (pp->guagedial)
1027                                         glDeleteLists(pp->guagedial, 1);
1028                                 if (pp->guageconnector)
1029                                         glDeleteLists(pp->guageconnector, 1);
1030                         }
1031                 }
1032
1033                 (void) free((void *) pipes);
1034                 pipes = NULL;
1035         }
1036         FreeAllGL(mi);
1037 }
1038
1039 #endif