src/rt/rmain.c

/* Copyright (c) 1992 Regents of the University of California */

#ifndef lint
static char SCCSid[] = "$SunId$ LBL";
#endif

/*
 *  rmain.c - main for ray tracing programs
 *
 *     3/24/87
 */

                                        /* for flaky pre-processors */
#ifndef  RPICT
#define  RPICT          0
#endif
#ifndef  RTRACE
#define  RTRACE         0
#endif
#ifndef  RVIEW
#define  RVIEW          0
#endif

#include  "ray.h"

#include  "resolu.h"

#include  "octree.h"

#include  <signal.h>

#include  "view.h"

#ifndef  DEFPATH
#define  DEFPATH        ":/usr/local/lib/ray"
#endif
#ifndef  ULIBVAR
#define  ULIBVAR        "RAYPATH"
#endif

char  *progname;                        /* argv[0] */

char  *octname;                         /* octree name */

char  *libpath;                         /* library directory list */

char  *sigerr[NSIG];                    /* signal error messages */

extern char  VersionID[];               /* version ID string */

extern int  stderr_v();                 /* standard error output */
int  (*errvec)() = stderr_v;            /* error output vector */
int  (*wrnvec)() = stderr_v;            /* warning output vector */
int  (*cmdvec)() = NULL;                /* command error vector */

int  (*trace)() = NULL;                 /* trace call */
int  do_irrad = 0;                      /* compute irradiance? */

extern long  time();
long  tstart;                           /* start time */

extern int  ambnotify();                /* new object notify functions */
int  (*addobjnotify[])() = {ambnotify, NULL};

CUBE  thescene;                         /* our scene */

extern int  imm_irrad;                  /* calculate immediate irradiance? */

extern int  ralrm;                      /* seconds between reports */

extern int  greyscale;                  /* map colors to brightness? */
extern char  *devname;                  /* output device name */

extern int  inform;                     /* input format */
extern int  outform;                    /* output format */
extern char  *outvals;                  /* output values */

extern VIEW  ourview;                   /* viewing parameters */

extern int  hresolu;                    /* horizontal resolution */
extern int  vresolu;                    /* vertical resolution */
extern double  pixaspect;               /* pixel aspect ratio */

extern int  psample;                    /* pixel sample size */
extern double  maxdiff;                 /* max. sample difference */
extern double  dstrpix;                 /* square pixel distribution */

extern double  dstrsrc;                 /* square source distribution */
extern double  shadthresh;              /* shadow threshold */
extern double  shadcert;                /* shadow testing certainty */
extern int  directrelay;                /* number of source relays */
extern int  vspretest;                  /* virtual source pretest density */
extern int  directinvis;                /* light sources invisible to eye? */
extern double  srcsizerat;              /* maximum source size/dist. ratio */

extern double  specthresh;              /* specular sampling threshold */
extern double  specjitter;              /* specular sampling jitter */

extern int  maxdepth;                   /* maximum recursion depth */
extern double  minweight;               /* minimum ray weight */

extern COLOR  ambval;                   /* ambient value */
extern double  ambacc;                  /* ambient accuracy */
extern int  ambres;                     /* ambient resolution */
extern int  ambdiv;                     /* ambient divisions */
extern int  ambssamp;                   /* ambient super-samples */
extern int  ambounce;                   /* ambient bounces */
extern char  *amblist[];                /* ambient include/exclude list */
extern int  ambincl;                    /* include == 1, exclude == 0 */


main(argc, argv)
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; }
        extern char  *getenv();
        char  *err;
        char  *recover = NULL;
        char  *outfile = NULL;
        char  *zfile = NULL;
        char  *errfile = NULL;
        char  *ambfile = NULL;
        char  **amblp = amblist;
        int  loadflags = ~IO_FILES;
        int  seqstart = 0;
        int  rval;
        int  i;
                                        /* record start time */
        tstart = time((long *)0);
                                        /* global program name */
        progname = argv[0];
                                        /* get library path */
        if ((libpath = getenv(ULIBVAR)) == NULL)
                libpath = DEFPATH;
                                        /* initialize object types */
        initotypes();
                                        /* initialize urand */
        initurand(2048);
                                        /* option city */
        for (i = 1; i < argc && argv[i][0] == '-'; i++) {
                if (!strcmp(argv[i], "-version")) {
                        puts(VersionID);
                        quit(0);
                }
                if (!strcmp(argv[i], "-defaults") ||
                                !strcmp(argv[i], "-help")) {
                        printdefaults();
                        quit(0);
                }
#if  RVIEW
                if (!strcmp(argv[i], "-devices")) {
                        printdevices();
                        quit(0);
                }
#endif
#if  RPICT|RVIEW
                rval = getviewopt(&ourview, argc-i, argv+i);
                if (rval >= 0) {
                        i += rval;
                        continue;
                }
#endif
                switch (argv[i][1]) {
#if  RPICT|RVIEW
                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;
#endif
                case 'd':                               /* direct */
                        switch (argv[i][2]) {
                        case 't':                               /* threshold */
                                check(3,"f");
                                shadthresh = atof(argv[++i]);
                                break;
                        case 'c':                               /* certainty */
                                check(3,"f");
                                shadcert = atof(argv[++i]);
                                break;
                        case 'j':                               /* jitter */
                                check(3,"f");
                                dstrsrc = atof(argv[++i]);
                                break;
                        case 'r':                               /* relays */
                                check(3,"i");
                                directrelay = atoi(argv[++i]);
                                break;
                        case 'p':                               /* pretest */
                                check(3,"i");
                                vspretest = atoi(argv[++i]);
                                break;
                        case 'i':                               /* invis. */
                                bool(3,directinvis);
                                break;
                        case 's':                               /* size */
                                check(3,"f");
                                srcsizerat = atof(argv[++i]);
                                break;
                        default:
                                goto badopt;
                        }
                        break;
                case 's':                               /* specular */
                        switch (argv[i][2]) {
                        case 't':                               /* threshold */
                                check(3,"f");
                                specthresh = atof(argv[++i]);
                                break;
                        case 'j':                               /* jitter */
                                check(3,"f");
                                specjitter = atof(argv[++i]);
                                break;
                        default:
                                goto badopt;
                        }
                        break;
#if  RPICT|RVIEW
                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;
#if  RPICT
                        case 'j':                               /* jitter */
                                check(3,"f");
                                dstrpix = atof(argv[++i]);
                                break;
                        case 'a':                               /* aspect */
                                check(3,"f");
                                pixaspect = atof(argv[++i]);
                                break;
#endif
                        default:
                                goto badopt;
                        }
                        break;
#endif
#if  RPICT|RTRACE
                case 'x':                               /* x resolution */
                        check(2,"i");
                        hresolu = atoi(argv[++i]);
                        break;
                case 'y':                               /* y resolution */
                        check(2,"i");
                        vresolu = atoi(argv[++i]);
                        break;
#endif
                case 'w':                               /* warnings */
                        rval = wrnvec != NULL;
                        bool(2,rval);
                        if (rval) wrnvec = stderr_v;
                        else wrnvec = NULL;
                        break;
                case 'e':                               /* error file */
                        check(2,"s");
                        errfile = argv[++i];
                        break;
                case 'l':                               /* limit */
                        switch (argv[i][2]) {
                        case 'r':                               /* recursion */
                                check(3,"i");
                                maxdepth = atoi(argv[++i]);
                                break;
                        case 'w':                               /* weight */
                                check(3,"f");
                                minweight = atof(argv[++i]);
                                break;
                        default:
                                goto badopt;
                        }
                        break;
                case 'i':                               /* irradiance */
                        bool(2,do_irrad);
                        break;
#if  RPICT
                case 'S':                               /* slave index */
                        check(2,"i");
                        seqstart = atoi(argv[++i]);
                        break;
                case 'o':                               /* output file */
                        check(2,"s");
                        outfile = argv[++i];
                        break;
                case 'z':                               /* z file */
                        check(2,"s");
                        zfile = argv[++i];
                        break;
                case 'r':                               /* recover file */
                        check(2,"s");
                        recover = argv[++i];
                        break;
                case 't':                               /* timer */
                        check(2,"i");
                        ralrm = atoi(argv[++i]);
                        break;
#endif
                case 'a':                               /* ambient */
                        switch (argv[i][2]) {
                        case 'v':                               /* value */
                                check(3,"fff");
                                setcolor(ambval, atof(argv[i+1]),
                                                atof(argv[i+2]),
                                                atof(argv[i+3]));
                                i += 3;
                                break;
                        case 'a':                               /* accuracy */
                                check(3,"f");
                                ambacc = atof(argv[++i]);
                                break;
                        case 'r':                               /* resolution */
                                check(3,"i");
                                ambres = atoi(argv[++i]);
                                break;
                        case 'd':                               /* divisions */
                                check(3,"i");
                                ambdiv = atoi(argv[++i]);
                                break;
                        case 's':                               /* super-samp */
                                check(3,"i");
                                ambssamp = atoi(argv[++i]);
                                break;
                        case 'b':                               /* bounces */
                                check(3,"i");
                                ambounce = atoi(argv[++i]);
                                break;
                        case 'i':                               /* include */
                        case 'I':
                                check(3,"s");
                                if (ambincl != 1) {
                                        ambincl = 1;
                                        amblp = amblist;
                                }
                                if (argv[i][2] == 'I') {        /* file */
                                        rval = wordfile(amblp, argv[++i]);
                                        if (rval < 0) {
                                                sprintf(errmsg,
                                "cannot open ambient include file \"%s\"",
                                                                argv[i]);
                                                error(SYSTEM, errmsg);
                                        }
                                        amblp += rval;
                                } else
                                        *amblp++ = argv[++i];
                                break;
                        case 'e':                               /* exclude */
                        case 'E':
                                check(3,"s");
                                if (ambincl != 0) {
                                        ambincl = 0;
                                        amblp = amblist;
                                }
                                if (argv[i][2] == 'E') {        /* file */
                                        rval = wordfile(amblp, argv[++i]);
                                        if (rval < 0) {
                                                sprintf(errmsg,
                                "cannot open ambient exclude file \"%s\"",
                                                                argv[i]);
                                                error(SYSTEM, errmsg);
                                        }
                                        amblp += rval;
                                } else
                                        *amblp++ = argv[++i];
                                break;
                        case 'f':                               /* file */
                                check(3,"s");
                                ambfile= argv[++i];
                                break;
                        default:
                                goto badopt;
                        }
                        break;
#if  RTRACE
                case 'I':                               /* immed. irradiance */
                        bool(2,imm_irrad);
                        break;
                case 'f':                               /* format i/o */
                        switch (argv[i][2]) {
                        case 'a':                               /* ascii */
                        case 'f':                               /* float */
                        case 'd':                               /* double */
                                inform = argv[i][2];
                                break;
                        default:
                                goto badopt;
                        }
                        switch (argv[i][3]) {
                        case '\0':
                                outform = inform;
                                break;
                        case 'a':                               /* ascii */
                        case 'f':                               /* float */
                        case 'd':                               /* double */
                        case 'c':                               /* color */
                                check(4,"");
                                outform = argv[i][3];
                                break;
                        default:
                                goto badopt;
                        }
                        break;
                case 'o':                               /* output */
                        outvals = argv[i]+2;
                        break;
                case 'h':                               /* header output */
                        rval = loadflags & IO_INFO;
                        bool(2,rval);
                        loadflags = rval ? loadflags | IO_INFO :
                                        loadflags & ~IO_INFO;
                        break;
#endif
#if  RVIEW
                case 'b':                               /* black and white */
                        bool(2,greyscale);
                        break;
                case 'o':                               /* output device */
                        check(2,"s");
                        devname = argv[++i];
                        break;
#endif
                default:
                        goto badopt;
                }
        }
        *amblp = NULL;
#if  RPICT|RVIEW
        err = setview(&ourview);        /* set viewing parameters */
        if (err != NULL)
                error(USER, err);
#endif
                                        /* 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);
                fputs("\n", stderr);
                fflush(stderr);
        }
#ifdef  NICE
        nice(NICE);                     /* lower priority */
#endif
                                        /* get octree */
#if  RVIEW
        loadflags &= ~IO_INFO;
#endif
        if (i == argc)
                octname = NULL;
        else if (i == argc-1)
                octname = argv[i];
        else
                goto badopt;
        if (
#if  RPICT
                seqstart > 0 &&
#endif
                        octname == NULL)
                error(USER, "missing octree argument");
#if  RPICT
        if (outfile != NULL)
                openheader();
#endif
        readoct(octname, loadflags, &thescene, NULL);

        if (loadflags & IO_INFO) {      /* print header */
                printargs(i, argv, stdout);
                printf("SOFTWARE= %s\n", VersionID);
        }

        marksources();                  /* find and mark sources */

        setambient(ambfile);            /* initialize ambient calculation */

#if  RPICT
        rpict(seqstart, outfile, zfile, recover);
#endif
#if  RTRACE
        rtrace(NULL);                   /* trace rays from stdin */
#endif
#if  RVIEW
        rview();                        /* go */
#endif
        quit(0);

badopt:
        sprintf(errmsg, "command line error at '%s'", argv[i]);
        error(USER, errmsg);

#undef  check
#undef  bool
}


eputs(s)                                /* error output */
char  *s;
{
        if (errvec != NULL)
                (*errvec)(s);
}


wputs(s)                                /* warning output */
char  *s;
{
        int  lasterrno = errno;         /* save errno */

        if (wrnvec != NULL)
                (*wrnvec)(s);

        errno = lasterrno;
}


cputs(s)                                /* command error output */
char  *s;
{
        if (cmdvec != NULL)
                (*cmdvec)(s);
}


stderr_v(s)                             /* 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;
        }
}


onsig(signo)                            /* 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);
}


sigdie(signo, msg)                      /* set fatal signal */
int  signo;
char  *msg;
{
        if (signal(signo, onsig) == SIG_IGN)
                signal(signo, SIG_IGN);
        sigerr[signo] = msg;
}


printdefaults()                 /* print default values to stdout */
{
        extern char  *formstr();
        register char  *cp;

#if  RTRACE
        if (imm_irrad)
                printf("-I+\t\t\t\t# immediate irradiance on\n");
        else
#endif
        printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
                        "-i-\t\t\t\t# irradiance calculation off\n");
#if  RVIEW
        printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" :
                        "-b-\t\t\t\t# greyscale off\n");
#endif
#if  RPICT|RVIEW
        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" :
                        "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("-vs %f\t\t\t# view shift\n", ourview.hoff);
        printf("-vl %f\t\t\t# view lift\n", ourview.voff);
#endif
#if  RPICT|RTRACE
        printf("-x  %-9d\t\t\t# x resolution\n", hresolu);
        printf("-y  %-9d\t\t\t# y resolution\n", vresolu);
#endif
#if  RPICT
        printf("-pa %f\t\t\t# pixel aspect ratio\n", pixaspect);
        printf("-pj %f\t\t\t# pixel jitter\n", dstrpix);
#endif
#if  RPICT|RVIEW
        printf("-ps %-9d\t\t\t# pixel sample\n", psample);
        printf("-pt %f\t\t\t# pixel threshold\n", maxdiff);
#endif
        printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
        printf("-dc %f\t\t\t# direct certainty\n", shadcert);
        printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
        printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
        printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
        printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
        printf(directinvis ? "-di+\t\t\t\t# direct invisibility on\n" :
                        "-di-\t\t\t\t# direct invisibility off\n");
        printf("-sj %f\t\t\t# specular jitter\n", specjitter);
        printf("-st %f\t\t\t# specular threshold\n", specthresh);
        printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
                        colval(ambval,GRN), colval(ambval, BLU));
        printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
        printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
        printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
        printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
        printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
        printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
        printf("-lw %f\t\t\t# limit weight\n", minweight);
#if  RPICT
        printf("-t  %-9d\t\t\t# time between reports\n", ralrm);
#endif
#if  RVIEW
        printf("-o %s\t\t\t\t# output device\n", devname);
#endif
#if  RTRACE
        printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
                        inform, outform, formstr(inform), formstr(outform));
        printf("-o%s\t\t\t\t# output", outvals);
        for (cp = outvals; *cp; cp++)
                switch (*cp) {
                case 't': printf(" trace"); break;
                case 'o': printf(" origin"); break;
                case 'd': printf(" direction"); break;
                case 'v': printf(" value"); break;
                case 'l': printf(" length"); break;
                case 'p': printf(" point"); break;
                case 'n': printf(" normal"); break;
                case 's': printf(" surface"); break;
                case 'w': printf(" weight"); break;
                case 'm': printf(" modifier"); break;
                }
        putchar('\n');
#endif
        printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
                        "-w-\t\t\t\t# warning messages off\n");
}
Revision:	2.7
Committed:	Fri Jul 10 14:57:53 1992 UTC (32 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.6:	+26 -44 lines
Log Message:	added -o and -S option for rpict added -f_c format option for rtrace
#	User	Rev	Content
1	greg	2.7	/* Copyright (c) 1992 Regents of the University of California */
2	greg	1.1
3			#ifndef lint
4			static char SCCSid[] = "$SunId$ LBL";
5			#endif
6
7			/*
8			* rmain.c - main for ray tracing programs
9			*
10			* 3/24/87
11			*/
12
13			/* for flaky pre-processors */
14			#ifndef RPICT
15			#define RPICT 0
16			#endif
17			#ifndef RTRACE
18			#define RTRACE 0
19			#endif
20			#ifndef RVIEW
21			#define RVIEW 0
22			#endif
23
24			#include "ray.h"
25
26	greg	1.50	#include "resolu.h"
27
28	greg	1.1	#include "octree.h"
29
30			#include <signal.h>
31
32			#include "view.h"
33
34			#ifndef DEFPATH
35			#define DEFPATH ":/usr/local/lib/ray"
36			#endif
37	greg	1.17	#ifndef ULIBVAR
38	greg	1.1	#define ULIBVAR "RAYPATH"
39	greg	1.17	#endif
40	greg	1.1
41			char progname; / argv[0] */
42
43	greg	1.19	char octname; / octree name */
44
45	greg	1.1	char libpath; / library directory list */
46
47			char sigerr[NSIG]; / signal error messages */
48
49	greg	1.46	extern char VersionID[]; /* version ID string */
50
51	greg	1.1	extern int stderr_v(); /* standard error output */
52			int (errvec)() = stderr_v; / error output vector */
53			int (wrnvec)() = stderr_v; / warning output vector */
54			int (cmdvec)() = NULL; / command error vector */
55
56			int (trace)() = NULL; / trace call */
57	greg	1.36	int do_irrad = 0; /* compute irradiance? */
58	greg	1.1
59	greg	1.34	extern long time();
60			long tstart; /* start time */
61
62	greg	1.24	extern int ambnotify(); /* new object notify functions */
63			int (*addobjnotify[])() = {ambnotify, NULL};
64
65	greg	1.1	CUBE thescene; /* our scene */
66
67	greg	1.36	extern int imm_irrad; /* calculate immediate irradiance? */
68
69	greg	1.1	extern int ralrm; /* seconds between reports */
70
71			extern int greyscale; /* map colors to brightness? */
72			extern char devname; / output device name */
73
74			extern int inform; /* input format */
75			extern int outform; /* output format */
76			extern char outvals; / output values */
77
78			extern VIEW ourview; /* viewing parameters */
79
80			extern int hresolu; /* horizontal resolution */
81			extern int vresolu; /* vertical resolution */
82	greg	1.22	extern double pixaspect; /* pixel aspect ratio */
83	greg	1.1
84			extern int psample; /* pixel sample size */
85			extern double maxdiff; /* max. sample difference */
86	greg	1.11	extern double dstrpix; /* square pixel distribution */
87	greg	1.1
88			extern double dstrsrc; /* square source distribution */
89	greg	1.11	extern double shadthresh; /* shadow threshold */
90	greg	1.15	extern double shadcert; /* shadow testing certainty */
91	greg	1.39	extern int directrelay; /* number of source relays */
92	greg	1.40	extern int vspretest; /* virtual source pretest density */
93	greg	1.42	extern int directinvis; /* light sources invisible to eye? */
94	greg	1.47	extern double srcsizerat; /* maximum source size/dist. ratio */
95	greg	1.1
96	greg	2.4	extern double specthresh; /* specular sampling threshold */
97			extern double specjitter; /* specular sampling jitter */
98
99	greg	1.1	extern int maxdepth; /* maximum recursion depth */
100			extern double minweight; /* minimum ray weight */
101
102			extern COLOR ambval; /* ambient value */
103			extern double ambacc; /* ambient accuracy */
104			extern int ambres; /* ambient resolution */
105			extern int ambdiv; /* ambient divisions */
106			extern int ambssamp; /* ambient super-samples */
107			extern int ambounce; /* ambient bounces */
108			extern char amblist[]; / ambient include/exclude list */
109			extern int ambincl; /* include == 1, exclude == 0 */
110
111
112			main(argc, argv)
113			int argc;
114			char *argv[];
115			{
116	greg	1.49	#define check(ol,al) if (argv[i][ol] \|\| \
117			badarg(argc-i-1,argv+i+1,al)) \
118			goto badopt
119	greg	1.43	#define bool(olen,var) switch (argv[i][olen]) { \
120			case '\0': var = !var; break; \
121			case 'y': case 'Y': case 't': case 'T': \
122			case '+': case '1': var = 1; break; \
123			case 'n': case 'N': case 'f': case 'F': \
124			case '-': case '0': var = 0; break; \
125			default: goto badopt; }
126	greg	1.45	extern char *getenv();
127	greg	1.1	char *err;
128			char *recover = NULL;
129	greg	2.7	char *outfile = NULL;
130	greg	1.20	char *zfile = NULL;
131	greg	1.1	char *errfile = NULL;
132			char *ambfile = NULL;
133			char **amblp = amblist;
134			int loadflags = ~IO_FILES;
135	greg	2.7	int seqstart = 0;
136			int rval;
137	greg	1.1	int i;
138	greg	1.34	/* record start time */
139			tstart = time((long *)0);
140	greg	1.1	/* global program name */
141			progname = argv[0];
142			/* get library path */
143			if ((libpath = getenv(ULIBVAR)) == NULL)
144			libpath = DEFPATH;
145	greg	1.31	/* initialize object types */
146			initotypes();
147	greg	1.37	/* initialize urand */
148	greg	1.41	initurand(2048);
149	greg	1.10	/* option city */
150	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
151	greg	1.46	if (!strcmp(argv[i], "-version")) {
152			puts(VersionID);
153			quit(0);
154			}
155	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
156			!strcmp(argv[i], "-help")) {
157	greg	1.1	printdefaults();
158			quit(0);
159			}
160			#if RVIEW
161			if (!strcmp(argv[i], "-devices")) {
162			printdevices();
163			quit(0);
164			}
165			#endif
166	greg	1.21	#if RPICT\|RVIEW
167			rval = getviewopt(&ourview, argc-i, argv+i);
168			if (rval >= 0) {
169			i += rval;
170			continue;
171			}
172			#endif
173	greg	1.1	switch (argv[i][1]) {
174			#if RPICT\|RVIEW
175	greg	1.21	case 'v': /* view file */
176			if (argv[i][2] != 'f')
177	greg	1.10	goto badopt;
178	greg	1.49	check(3,"s");
179	greg	1.50	rval = viewfile(argv[++i], &ourview, NULL);
180	greg	1.21	if (rval < 0) {
181			sprintf(errmsg,
182			"cannot open view file \"%s\"",
183			argv[i]);
184			error(SYSTEM, errmsg);
185			} else if (rval == 0) {
186			sprintf(errmsg,
187			"bad view file \"%s\"",
188			argv[i]);
189			error(USER, errmsg);
190	greg	2.7	}
191	greg	1.1	break;
192			#endif
193	greg	1.11	case 'd': /* direct */
194	greg	1.1	switch (argv[i][2]) {
195	greg	1.13	case 't': /* threshold */
196	greg	1.49	check(3,"f");
197	greg	1.11	shadthresh = atof(argv[++i]);
198	greg	1.1	break;
199	greg	1.15	case 'c': /* certainty */
200	greg	1.49	check(3,"f");
201	greg	1.15	shadcert = atof(argv[++i]);
202			break;
203	greg	1.11	case 'j': /* jitter */
204	greg	1.49	check(3,"f");
205	greg	1.1	dstrsrc = atof(argv[++i]);
206			break;
207	greg	1.47	case 'r': /* relays */
208	greg	1.49	check(3,"i");
209	greg	1.39	directrelay = atoi(argv[++i]);
210			break;
211	greg	1.47	case 'p': /* pretest */
212	greg	1.49	check(3,"i");
213	greg	1.40	vspretest = atoi(argv[++i]);
214	greg	1.42	break;
215	greg	1.47	case 'i': /* invis. */
216	greg	1.43	bool(3,directinvis);
217	greg	1.40	break;
218	greg	1.47	case 's': /* size */
219	greg	1.49	check(3,"f");
220	greg	1.47	srcsizerat = atof(argv[++i]);
221			break;
222	greg	1.1	default:
223	greg	1.10	goto badopt;
224	greg	1.1	}
225			break;
226	greg	2.4	case 's': /* specular */
227			switch (argv[i][2]) {
228			case 't': /* threshold */
229			check(3,"f");
230			specthresh = atof(argv[++i]);
231			break;
232			case 'j': /* jitter */
233			check(3,"f");
234			specjitter = atof(argv[++i]);
235			break;
236			default:
237			goto badopt;
238			}
239			break;
240	greg	1.1	#if RPICT\|RVIEW
241	greg	2.4	case 'p': /* pixel */
242	greg	1.1	switch (argv[i][2]) {
243	greg	2.4	case 's': /* sample */
244	greg	1.49	check(3,"i");
245	greg	1.1	psample = atoi(argv[++i]);
246			break;
247	greg	1.13	case 't': /* threshold */
248	greg	1.49	check(3,"f");
249	greg	1.1	maxdiff = atof(argv[++i]);
250			break;
251	greg	1.11	#if RPICT
252			case 'j': /* jitter */
253	greg	1.49	check(3,"f");
254	greg	1.11	dstrpix = atof(argv[++i]);
255			break;
256	greg	2.4	case 'a': /* aspect */
257			check(3,"f");
258			pixaspect = atof(argv[++i]);
259			break;
260	greg	1.11	#endif
261	greg	1.1	default:
262	greg	1.10	goto badopt;
263	greg	1.1	}
264			break;
265			#endif
266	greg	1.22	#if RPICT\|RTRACE
267	greg	1.1	case 'x': /* x resolution */
268	greg	1.49	check(2,"i");
269	greg	1.1	hresolu = atoi(argv[++i]);
270			break;
271			case 'y': /* y resolution */
272	greg	1.49	check(2,"i");
273	greg	1.1	vresolu = atoi(argv[++i]);
274			break;
275	greg	1.22	#endif
276	greg	1.1	case 'w': /* warnings */
277	greg	1.43	rval = wrnvec != NULL;
278			bool(2,rval);
279	greg	2.6	if (rval) wrnvec = stderr_v;
280			else wrnvec = NULL;
281	greg	1.1	break;
282			case 'e': /* error file */
283	greg	1.49	check(2,"s");
284	greg	1.1	errfile = argv[++i];
285			break;
286			case 'l': /* limit */
287			switch (argv[i][2]) {
288			case 'r': /* recursion */
289	greg	1.49	check(3,"i");
290	greg	1.1	maxdepth = atoi(argv[++i]);
291			break;
292			case 'w': /* weight */
293	greg	1.49	check(3,"f");
294	greg	1.1	minweight = atof(argv[++i]);
295			break;
296			default:
297	greg	1.10	goto badopt;
298	greg	1.1	}
299			break;
300	greg	1.36	case 'i': /* irradiance */
301	greg	1.43	bool(2,do_irrad);
302	greg	1.36	break;
303	greg	1.1	#if RPICT
304	greg	2.7	case 'S': /* slave index */
305			check(2,"i");
306			seqstart = atoi(argv[++i]);
307			break;
308			case 'o': /* output file */
309			check(2,"s");
310			outfile = argv[++i];
311			break;
312	greg	1.20	case 'z': /* z file */
313	greg	1.49	check(2,"s");
314	greg	1.20	zfile = argv[++i];
315			break;
316	greg	1.1	case 'r': /* recover file */
317	greg	1.49	check(2,"s");
318	greg	1.1	recover = argv[++i];
319			break;
320			case 't': /* timer */
321	greg	1.49	check(2,"i");
322	greg	1.1	ralrm = atoi(argv[++i]);
323			break;
324			#endif
325			case 'a': /* ambient */
326			switch (argv[i][2]) {
327			case 'v': /* value */
328	greg	1.49	check(3,"fff");
329	greg	1.1	setcolor(ambval, atof(argv[i+1]),
330			atof(argv[i+2]),
331			atof(argv[i+3]));
332			i += 3;
333			break;
334			case 'a': /* accuracy */
335	greg	1.49	check(3,"f");
336	greg	1.1	ambacc = atof(argv[++i]);
337			break;
338			case 'r': /* resolution */
339	greg	1.49	check(3,"i");
340	greg	1.1	ambres = atoi(argv[++i]);
341			break;
342			case 'd': /* divisions */
343	greg	1.49	check(3,"i");
344	greg	1.1	ambdiv = atoi(argv[++i]);
345			break;
346			case 's': /* super-samp */
347	greg	1.49	check(3,"i");
348	greg	1.1	ambssamp = atoi(argv[++i]);
349			break;
350			case 'b': /* bounces */
351	greg	1.49	check(3,"i");
352	greg	1.1	ambounce = atoi(argv[++i]);
353			break;
354			case 'i': /* include */
355	greg	2.5	case 'I':
356	greg	1.49	check(3,"s");
357	greg	1.1	if (ambincl != 1) {
358			ambincl = 1;
359			amblp = amblist;
360			}
361	greg	2.5	if (argv[i][2] == 'I') { /* file */
362			rval = wordfile(amblp, argv[++i]);
363			if (rval < 0) {
364			sprintf(errmsg,
365			"cannot open ambient include file \"%s\"",
366			argv[i]);
367			error(SYSTEM, errmsg);
368			}
369			amblp += rval;
370			} else
371			*amblp++ = argv[++i];
372	greg	1.1	break;
373			case 'e': /* exclude */
374	greg	2.5	case 'E':
375	greg	1.49	check(3,"s");
376	greg	1.1	if (ambincl != 0) {
377			ambincl = 0;
378			amblp = amblist;
379			}
380	greg	2.5	if (argv[i][2] == 'E') { /* file */
381			rval = wordfile(amblp, argv[++i]);
382			if (rval < 0) {
383			sprintf(errmsg,
384			"cannot open ambient exclude file \"%s\"",
385			argv[i]);
386			error(SYSTEM, errmsg);
387			}
388			amblp += rval;
389			} else
390			*amblp++ = argv[++i];
391	greg	1.1	break;
392			case 'f': /* file */
393	greg	1.49	check(3,"s");
394	greg	1.1	ambfile= argv[++i];
395			break;
396			default:
397	greg	1.10	goto badopt;
398	greg	1.1	}
399			break;
400			#if RTRACE
401	greg	1.36	case 'I': /* immed. irradiance */
402	greg	1.43	bool(2,imm_irrad);
403	greg	1.36	break;
404	greg	1.1	case 'f': /* format i/o */
405			switch (argv[i][2]) {
406			case 'a': /* ascii */
407			case 'f': /* float */
408			case 'd': /* double */
409			inform = argv[i][2];
410			break;
411			default:
412	greg	1.10	goto badopt;
413	greg	1.1	}
414			switch (argv[i][3]) {
415			case '\0':
416			outform = inform;
417			break;
418			case 'a': /* ascii */
419			case 'f': /* float */
420			case 'd': /* double */
421	greg	2.7	case 'c': /* color */
422	greg	1.49	check(4,"");
423	greg	1.1	outform = argv[i][3];
424			break;
425			default:
426	greg	1.10	goto badopt;
427	greg	1.1	}
428			break;
429			case 'o': /* output */
430			outvals = argv[i]+2;
431			break;
432	greg	1.44	case 'h': /* header output */
433			rval = loadflags & IO_INFO;
434			bool(2,rval);
435			loadflags = rval ? loadflags \| IO_INFO :
436			loadflags & ~IO_INFO;
437	greg	1.1	break;
438			#endif
439			#if RVIEW
440			case 'b': /* black and white */
441	greg	1.49	bool(2,greyscale);
442	greg	1.1	break;
443			case 'o': /* output device */
444	greg	1.49	check(2,"s");
445	greg	1.1	devname = argv[++i];
446			break;
447			#endif
448			default:
449	greg	1.19	goto badopt;
450	greg	1.1	}
451			}
452	greg	1.24	*amblp = NULL;
453	greg	1.1	#if RPICT\|RVIEW
454			err = setview(&ourview); /* set viewing parameters */
455			if (err != NULL)
456			error(USER, err);
457			#endif
458			/* set up signal handling */
459			sigdie(SIGINT, "Interrupt");
460			sigdie(SIGHUP, "Hangup");
461			sigdie(SIGTERM, "Terminate");
462			sigdie(SIGPIPE, "Broken pipe");
463	greg	1.45	sigdie(SIGALRM, "Alarm clock");
464	greg	1.1	#ifdef SIGXCPU
465			sigdie(SIGXCPU, "CPU limit exceeded");
466			sigdie(SIGXFSZ, "File size exceeded");
467			#endif
468			/* open error file */
469			if (errfile != NULL) {
470			if (freopen(errfile, "a", stderr) == NULL)
471	greg	1.14	quit(2);
472	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
473			getpid());
474			printargs(argc, argv, stderr);
475			fputs("\n", stderr);
476			fflush(stderr);
477			}
478			#ifdef NICE
479			nice(NICE); /* lower priority */
480			#endif
481	greg	1.19	/* get octree */
482	greg	1.1	#if RVIEW
483			loadflags &= ~IO_INFO;
484			#endif
485			if (i == argc)
486	greg	1.19	octname = NULL;
487			else if (i == argc-1)
488			octname = argv[i];
489	greg	1.1	else
490	greg	1.19	goto badopt;
491	greg	2.7	if (
492			#if RPICT
493			seqstart > 0 &&
494			#endif
495			octname == NULL)
496	greg	1.19	error(USER, "missing octree argument");
497	greg	2.7	#if RPICT
498			if (outfile != NULL)
499			openheader();
500	greg	1.1	#endif
501	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
502	greg	1.1
503			if (loadflags & IO_INFO) { /* print header */
504			printargs(i, argv, stdout);
505	greg	1.46	printf("SOFTWARE= %s\n", VersionID);
506	greg	1.1	}
507
508			marksources(); /* find and mark sources */
509
510	greg	1.24	setambient(ambfile); /* initialize ambient calculation */
511	greg	1.1
512			#if RPICT
513	greg	2.7	rpict(seqstart, outfile, zfile, recover);
514	greg	1.1	#endif
515			#if RTRACE
516			rtrace(NULL); /* trace rays from stdin */
517			#endif
518			#if RVIEW
519			rview(); /* go */
520			#endif
521			quit(0);
522	greg	1.19
523			badopt:
524			sprintf(errmsg, "command line error at '%s'", argv[i]);
525			error(USER, errmsg);
526
527	greg	1.10	#undef check
528	greg	1.43	#undef bool
529	greg	1.1	}
530
531
532			eputs(s) /* error output */
533			char *s;
534			{
535			if (errvec != NULL)
536			(*errvec)(s);
537			}
538
539
540			wputs(s) /* warning output */
541			char *s;
542			{
543	greg	2.3	int lasterrno = errno; /* save errno */
544
545	greg	1.1	if (wrnvec != NULL)
546			(*wrnvec)(s);
547	greg	2.3
548			errno = lasterrno;
549	greg	1.1	}
550
551
552			cputs(s) /* command error output */
553			char *s;
554			{
555			if (cmdvec != NULL)
556			(*cmdvec)(s);
557			}
558
559
560			stderr_v(s) /* put string to stderr */
561			register char *s;
562			{
563	greg	1.26	static int midline = 0;
564	greg	1.1
565	greg	1.27	if (!*s)
566			return;
567	greg	1.26	if (!midline++) {
568	greg	1.1	fputs(progname, stderr);
569			fputs(": ", stderr);
570			}
571			fputs(s, stderr);
572	greg	1.27	if (s[strlen(s)-1] == '\n') {
573	greg	1.1	fflush(stderr);
574	greg	1.26	midline = 0;
575	greg	1.1	}
576			}
577
578
579			onsig(signo) /* fatal signal */
580			int signo;
581			{
582	greg	1.8	static int gotsig = 0;
583
584			if (gotsig++) /* two signals and we're gone! */
585	greg	1.9	_exit(signo);
586	greg	1.8
587	greg	1.48	alarm(15); /* allow 15 seconds to clean up */
588			signal(SIGALRM, SIG_DFL); /* make certain we do die */
589	greg	1.1	eputs("signal - ");
590			eputs(sigerr[signo]);
591			eputs("\n");
592	greg	1.14	quit(3);
593	greg	1.1	}
594
595
596			sigdie(signo, msg) /* set fatal signal */
597			int signo;
598			char *msg;
599			{
600			if (signal(signo, onsig) == SIG_IGN)
601			signal(signo, SIG_IGN);
602			sigerr[signo] = msg;
603			}
604
605
606			printdefaults() /* print default values to stdout */
607			{
608	greg	2.7	extern char *formstr();
609	greg	1.1	register char *cp;
610
611	greg	1.43	#if RTRACE
612			if (imm_irrad)
613			printf("-I+\t\t\t\t# immediate irradiance on\n");
614			else
615			#endif
616			printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
617			"-i-\t\t\t\t# irradiance calculation off\n");
618	greg	1.49	#if RVIEW
619			printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" :
620			"-b-\t\t\t\t# greyscale off\n");
621			#endif
622	greg	1.1	#if RPICT\|RVIEW
623	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
624	greg	1.1	ourview.type==VT_PER ? "perspective" :
625			ourview.type==VT_PAR ? "parallel" :
626	greg	1.28	ourview.type==VT_HEM ? "hemispherical" :
627			ourview.type==VT_ANG ? "angular" :
628	greg	1.1	"unknown");
629			printf("-vp %f %f %f\t# view point\n",
630			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
631			printf("-vd %f %f %f\t# view direction\n",
632			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
633			printf("-vu %f %f %f\t# view up\n",
634			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
635			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
636			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
637	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
638			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
639	greg	1.1	#endif
640	greg	1.22	#if RPICT\|RTRACE
641	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
642			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
643	greg	1.22	#endif
644			#if RPICT
645	greg	2.4	printf("-pa %f\t\t\t# pixel aspect ratio\n", pixaspect);
646			printf("-pj %f\t\t\t# pixel jitter\n", dstrpix);
647	greg	1.22	#endif
648	greg	1.1	#if RPICT\|RVIEW
649	greg	2.4	printf("-ps %-9d\t\t\t# pixel sample\n", psample);
650			printf("-pt %f\t\t\t# pixel threshold\n", maxdiff);
651	greg	1.22	#endif
652	greg	1.29	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
653			printf("-dc %f\t\t\t# direct certainty\n", shadcert);
654			printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
655	greg	1.47	printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
656	greg	1.39	printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
657	greg	1.40	printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
658	greg	1.43	printf(directinvis ? "-di+\t\t\t\t# direct invisibility on\n" :
659			"-di-\t\t\t\t# direct invisibility off\n");
660	greg	2.4	printf("-sj %f\t\t\t# specular jitter\n", specjitter);
661			printf("-st %f\t\t\t# specular threshold\n", specthresh);
662	greg	1.1	printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
663			colval(ambval,GRN), colval(ambval, BLU));
664			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
665			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
666			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
667			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
668			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
669			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
670			printf("-lw %f\t\t\t# limit weight\n", minweight);
671			#if RPICT
672			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
673			#endif
674			#if RVIEW
675			printf("-o %s\t\t\t\t# output device\n", devname);
676			#endif
677			#if RTRACE
678			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
679	greg	2.7	inform, outform, formstr(inform), formstr(outform));
680	greg	1.1	printf("-o%s\t\t\t\t# output", outvals);
681			for (cp = outvals; *cp; cp++)
682			switch (*cp) {
683			case 't': printf(" trace"); break;
684			case 'o': printf(" origin"); break;
685			case 'd': printf(" direction"); break;
686			case 'v': printf(" value"); break;
687			case 'l': printf(" length"); break;
688			case 'p': printf(" point"); break;
689			case 'n': printf(" normal"); break;
690			case 's': printf(" surface"); break;
691			case 'w': printf(" weight"); break;
692			case 'm': printf(" modifier"); break;
693			}
694	greg	2.7	putchar('\n');
695	greg	1.1	#endif
696	greg	1.43	printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
697			"-w-\t\t\t\t# warning messages off\n");
698	greg	1.1	}