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Comparing ray/src/rt/rmain.c (file contents):
Revision 2.16 by greg, Wed Nov 11 12:47:38 1992 UTC vs.
Revision 2.17 by greg, Thu Nov 19 20:26:02 1992 UTC

# Line 87 | Line 87 | extern double  shadthresh;             /* shadow threshold */
87   extern double  shadcert;                /* shadow testing certainty */
88   extern int  directrelay;                /* number of source relays */
89   extern int  vspretest;                  /* virtual source pretest density */
90 < extern int  directinvis;                /* light sources invisible to eye? */
90 > extern int  directvis;                  /* light sources visible to eye? */
91   extern double  srcsizerat;              /* maximum source size/dist. ratio */
92  
93   extern double  specthresh;              /* specular sampling threshold */
# Line 216 | Line 216 | char  *argv[];
216                                  check(3,"i");
217                                  vspretest = atoi(argv[++i]);
218                                  break;
219 <                        case 'i':                               /* invis. */
220 <                                bool(3,directinvis);
219 >                        case 'v':                               /* visibility */
220 >                                bool(3,directvis);
221                                  break;
222                          case 's':                               /* size */
223                                  check(3,"f");
# Line 677 | Line 677 | printdefaults()                        /* print default values to stdout */
677          printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
678          printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
679          printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
680 <        printf(directinvis ? "-di+\t\t\t\t# direct invisibility on\n" :
681 <                        "-di-\t\t\t\t# direct invisibility off\n");
680 >        printf(directvis ? "-dv+\t\t\t\t# direct visibility on\n" :
681 >                        "-dv-\t\t\t\t# direct visibility off\n");
682          printf("-sj %f\t\t\t# specular jitter\n", specjitter);
683          printf("-st %f\t\t\t# specular threshold\n", specthresh);
684          printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),

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