#ifndef lint static const char RCSid[] = "$Id: rvmain.c,v 2.4 2004/03/30 16:13:01 schorsch Exp $"; #endif /* * rvmain.c - main for rview interactive viewer */ #include "copyright.h" #include #include "platform.h" #include "ray.h" #include "source.h" #include "ambient.h" #include "rpaint.h" #include "random.h" #include "paths.h" #include "view.h" char *progname; /* argv[0] */ char *octname; /* octree name */ char *sigerr[NSIG]; /* signal error messages */ char *shm_boundary = NULL; /* boundary of shared memory */ char *errfile = NULL; /* error output file */ extern int greyscale; /* map colors to brightness? */ extern char *dvcname; /* output device name */ extern double exposure; /* exposure compensation */ extern VIEW ourview; /* viewing parameters */ extern char rifname[]; /* rad input file name */ extern int hresolu; /* horizontal resolution */ extern int vresolu; /* vertical resolution */ extern int psample; /* pixel sample size */ extern double maxdiff; /* max. sample difference */ static void onsig(int signo); static void sigdie(int signo, char *msg); static void printdefaults(void); int main(int argc, char *argv[]) { #define check(ol,al) if (argv[i][ol] || \ badarg(argc-i-1,argv+i+1,al)) \ goto badopt #define bool(olen,var) switch (argv[i][olen]) { \ case '\0': var = !var; break; \ case 'y': case 'Y': case 't': case 'T': \ case '+': case '1': var = 1; break; \ case 'n': case 'N': case 'f': case 'F': \ case '-': case '0': var = 0; break; \ default: goto badopt; } char *err; int rval; int i; /* global program name */ progname = argv[0] = fixargv0(argv[0]); /* option city */ for (i = 1; i < argc; i++) { /* expand arguments */ while ((rval = expandarg(&argc, &argv, i)) > 0) ; if (rval < 0) { sprintf(errmsg, "cannot expand '%s'", argv[i]); error(SYSTEM, errmsg); } if (argv[i] == NULL || argv[i][0] != '-') break; /* break from options */ if (!strcmp(argv[i], "-version")) { puts(VersionID); quit(0); } if (!strcmp(argv[i], "-defaults") || !strcmp(argv[i], "-help")) { printdefaults(); quit(0); } if (!strcmp(argv[i], "-devices")) { printdevices(); quit(0); } rval = getrenderopt(argc-i, argv+i); if (rval >= 0) { i += rval; continue; } rval = getviewopt(&ourview, argc-i, argv+i); if (rval >= 0) { i += rval; continue; } switch (argv[i][1]) { case 'v': /* view file */ if (argv[i][2] != 'f') goto badopt; check(3,"s"); rval = viewfile(argv[++i], &ourview, NULL); if (rval < 0) { sprintf(errmsg, "cannot open view file \"%s\"", argv[i]); error(SYSTEM, errmsg); } else if (rval == 0) { sprintf(errmsg, "bad view file \"%s\"", argv[i]); error(USER, errmsg); } break; case 'b': /* grayscale */ bool(2,greyscale); break; case 'p': /* pixel */ switch (argv[i][2]) { case 's': /* sample */ check(3,"i"); psample = atoi(argv[++i]); break; case 't': /* threshold */ check(3,"f"); maxdiff = atof(argv[++i]); break; case 'e': /* exposure */ check(3,"f"); exposure = atof(argv[++i]); if (argv[i][0] == '+' || argv[i][0] == '-') exposure = pow(2.0, exposure); break; default: goto badopt; } break; case 'w': /* warnings */ rval = erract[WARNING].pf != NULL; bool(2,rval); if (rval) erract[WARNING].pf = wputs; else erract[WARNING].pf = NULL; break; case 'e': /* error file */ check(2,"s"); errfile = argv[++i]; break; case 'o': /* output device */ check(2,"s"); dvcname = argv[++i]; break; case 'R': /* render input file */ check(2,"s"); strcpy(rifname, argv[++i]); break; default: goto badopt; } } err = setview(&ourview); /* set viewing parameters */ if (err != NULL) error(USER, err); /* initialize object types */ initotypes(); /* initialize urand */ initurand(2048); /* set up signal handling */ sigdie(SIGINT, "Interrupt"); sigdie(SIGHUP, "Hangup"); sigdie(SIGTERM, "Terminate"); sigdie(SIGPIPE, "Broken pipe"); sigdie(SIGALRM, "Alarm clock"); #ifdef SIGXCPU sigdie(SIGXCPU, "CPU limit exceeded"); sigdie(SIGXFSZ, "File size exceeded"); #endif /* open error file */ if (errfile != NULL) { if (freopen(errfile, "a", stderr) == NULL) quit(2); fprintf(stderr, "**************\n*** PID %5d: ", getpid()); printargs(argc, argv, stderr); putc('\n', stderr); fflush(stderr); } #ifdef NICE nice(NICE); /* lower priority */ #endif /* get octree */ if (i == argc) octname = NULL; else if (i == argc-1) octname = argv[i]; else goto badopt; if (octname == NULL) error(USER, "missing octree argument"); /* set up output */ SET_FILE_BINARY(stdout); readoct(octname, ~(IO_FILES|IO_INFO), &thescene, NULL); nsceneobjs = nobjects; marksources(); /* find and mark sources */ setambient(); /* initialize ambient calculation */ rview(); /* run interactive viewer */ ambsync(); /* flush ambient file */ quit(0); badopt: sprintf(errmsg, "command line error at '%s'", argv[i]); error(USER, errmsg); return 1; /* pro forma return */ #undef check #undef bool } void wputs( /* warning output function */ char *s ) { int lasterrno = errno; eputs(s); errno = lasterrno; } void eputs( /* put string to stderr */ register char *s ) { static int midline = 0; if (!*s) return; if (!midline++) { fputs(progname, stderr); fputs(": ", stderr); } fputs(s, stderr); if (s[strlen(s)-1] == '\n') { fflush(stderr); midline = 0; } } static void onsig( /* fatal signal */ int signo ) { static int gotsig = 0; if (gotsig++) /* two signals and we're gone! */ _exit(signo); alarm(15); /* allow 15 seconds to clean up */ signal(SIGALRM, SIG_DFL); /* make certain we do die */ eputs("signal - "); eputs(sigerr[signo]); eputs("\n"); quit(3); } static void sigdie( /* set fatal signal */ int signo, char *msg ) { if (signal(signo, onsig) == SIG_IGN) signal(signo, SIG_IGN); sigerr[signo] = msg; } static void printdefaults(void) /* print default values to stdout */ { printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" : "-b-\t\t\t\t# greyscale off\n"); printf("-vt%c\t\t\t\t# view type %s\n", ourview.type, ourview.type==VT_PER ? "perspective" : ourview.type==VT_PAR ? "parallel" : ourview.type==VT_HEM ? "hemispherical" : ourview.type==VT_ANG ? "angular" : ourview.type==VT_CYL ? "cylindrical" : "unknown"); printf("-vp %f %f %f\t# view point\n", ourview.vp[0], ourview.vp[1], ourview.vp[2]); printf("-vd %f %f %f\t# view direction\n", ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]); printf("-vu %f %f %f\t# view up\n", ourview.vup[0], ourview.vup[1], ourview.vup[2]); printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz); printf("-vv %f\t\t\t# view vertical size\n", ourview.vert); printf("-vo %f\t\t\t# view fore clipping plane\n", ourview.vfore); printf("-va %f\t\t\t# view aft clipping plane\n", ourview.vaft); printf("-vs %f\t\t\t# view shift\n", ourview.hoff); printf("-vl %f\t\t\t# view lift\n", ourview.voff); printf("-pe %f\t\t\t# pixel exposure\n", exposure); printf("-ps %-9d\t\t\t# pixel sample\n", psample); printf("-pt %f\t\t\t# pixel threshold\n", maxdiff); printf("-o %s\t\t\t\t# output device\n", dvcname); printf(erract[WARNING].pf != NULL ? "-w+\t\t\t\t# warning messages on\n" : "-w-\t\t\t\t# warning messages off\n"); print_rdefaults(); }