src/rt/rmain.c

/* Copyright (c) 1991 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 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  *zfile = NULL;
        char  *errfile = NULL;
        char  *ambfile = NULL;
        char  **amblp = amblist;
        int  loadflags = ~IO_FILES;
        int  rval, gotvfile = 0;
        RESOLU  rs;
        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);
                        } else
                                gotvfile += rval;
                        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;
#if  RPICT|RVIEW
                case 's':                               /* sample */
                        switch (argv[i][2]) {
                        case 'p':                               /* pixel */
                                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;
#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
#if  RPICT      
                case 'p':                               /* pixel aspect */
                        check(2,"f");
                        pixaspect = atof(argv[++i]);
                        break;
#endif
                case 'w':                               /* warnings */
                        rval = wrnvec != NULL;
                        bool(2,rval);
                        wrnvec = rval ? stderr_v : 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 'z':                               /* z file */
                        check(2,"s");
                        zfile = argv[++i];
                        break;
                case 'r':                               /* recover file */
                        check(2,"s");
                        recover = argv[++i];
                        rval = viewfile(recover, &ourview, &rs);
                        if (rval <= 0 || rs.or != PIXSTANDARD) {
                                sprintf(errmsg,
                        "cannot recover view parameters from \"%s\"", recover);
                                error(WARNING, errmsg);
                        } else {
                                gotvfile += rval;
                                pixaspect = 0.0;
                                hresolu = rs.xr;
                                vresolu = rs.yr;
                        }
                        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 */
                                check(3,"s");
                                if (ambincl != 1) {
                                        ambincl = 1;
                                        amblp = amblist;
                                }
                                *amblp++ = argv[++i];
                                break;
                        case 'e':                               /* exclude */
                                check(3,"s");
                                if (ambincl != 0) {
                                        ambincl = 0;
                                        amblp = amblist;
                                }
                                *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 */
                                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
#if  RPICT
        normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
#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  RVIEW|RTRACE
        if (octname == NULL)
                error(USER, "missing octree argument");
#endif
        readoct(octname, loadflags, &thescene, NULL);

        if (loadflags & IO_INFO) {      /* print header */
                printargs(i, argv, stdout);
                printf("SOFTWARE= %s\n", VersionID);
#if  RPICT
                if (gotvfile) {
                        printf(VIEWSTR);
                        fprintview(&ourview, stdout);
                        printf("\n");
                }
                if (pixaspect < .99 || pixaspect > 1.01)
                        fputaspect(pixaspect, stdout);
                fputformat(COLRFMT, stdout);
#endif
#if  RTRACE
                fputformat(     outform=='a' ? "ascii" :
                                outform=='f' ? "float" :
                                "double",       stdout  );
#endif
                printf("\n");
        }

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

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

#if  RPICT
        render(zfile, recover);         /* render the scene */
#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 */
{
        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("-p  %f\t\t\t# pixel aspect ratio\n", pixaspect);
#endif
#if  RPICT|RVIEW
        printf("-sp %-9d\t\t\t# sample pixel\n", psample);
        printf("-st %f\t\t\t# sample threshold\n", maxdiff);
#endif
#if  RPICT
        printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
#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("-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, 
                        inform=='a' ? "ascii" :
                        inform=='f' ? "float" : "double",
                        outform=='a' ? "ascii" :
                        outform=='f' ? "float" : "double");
        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;
                }
        printf("\n");
#endif
        printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
                        "-w-\t\t\t\t# warning messages off\n");
}
Revision:	2.3
Committed:	Tue Dec 24 17:43:31 1991 UTC (33 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.2:	+4 -0 lines
Log Message:	changed wputs so that it preserves errno value
#	User	Rev	Content
1	greg	1.34	/* Copyright (c) 1991 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			extern int maxdepth; /* maximum recursion depth */
97			extern double minweight; /* minimum ray weight */
98
99			extern COLOR ambval; /* ambient value */
100			extern double ambacc; /* ambient accuracy */
101			extern int ambres; /* ambient resolution */
102			extern int ambdiv; /* ambient divisions */
103			extern int ambssamp; /* ambient super-samples */
104			extern int ambounce; /* ambient bounces */
105			extern char amblist[]; / ambient include/exclude list */
106			extern int ambincl; /* include == 1, exclude == 0 */
107
108
109			main(argc, argv)
110			int argc;
111			char *argv[];
112			{
113	greg	1.49	#define check(ol,al) if (argv[i][ol] \|\| \
114			badarg(argc-i-1,argv+i+1,al)) \
115			goto badopt
116	greg	1.43	#define bool(olen,var) switch (argv[i][olen]) { \
117			case '\0': var = !var; break; \
118			case 'y': case 'Y': case 't': case 'T': \
119			case '+': case '1': var = 1; break; \
120			case 'n': case 'N': case 'f': case 'F': \
121			case '-': case '0': var = 0; break; \
122			default: goto badopt; }
123	greg	1.45	extern char *getenv();
124	greg	1.1	char *err;
125			char *recover = NULL;
126	greg	1.20	char *zfile = NULL;
127	greg	1.1	char *errfile = NULL;
128			char *ambfile = NULL;
129			char **amblp = amblist;
130			int loadflags = ~IO_FILES;
131	greg	1.4	int rval, gotvfile = 0;
132	greg	1.50	RESOLU rs;
133	greg	1.1	int i;
134	greg	1.34	/* record start time */
135			tstart = time((long *)0);
136	greg	1.1	/* global program name */
137			progname = argv[0];
138			/* get library path */
139			if ((libpath = getenv(ULIBVAR)) == NULL)
140			libpath = DEFPATH;
141	greg	1.31	/* initialize object types */
142			initotypes();
143	greg	1.37	/* initialize urand */
144	greg	1.41	initurand(2048);
145	greg	1.10	/* option city */
146	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
147	greg	1.46	if (!strcmp(argv[i], "-version")) {
148			puts(VersionID);
149			quit(0);
150			}
151	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
152			!strcmp(argv[i], "-help")) {
153	greg	1.1	printdefaults();
154			quit(0);
155			}
156			#if RVIEW
157			if (!strcmp(argv[i], "-devices")) {
158			printdevices();
159			quit(0);
160			}
161			#endif
162	greg	1.21	#if RPICT\|RVIEW
163			rval = getviewopt(&ourview, argc-i, argv+i);
164			if (rval >= 0) {
165			i += rval;
166			continue;
167			}
168			#endif
169	greg	1.1	switch (argv[i][1]) {
170			#if RPICT\|RVIEW
171	greg	1.21	case 'v': /* view file */
172			if (argv[i][2] != 'f')
173	greg	1.10	goto badopt;
174	greg	1.49	check(3,"s");
175	greg	1.50	rval = viewfile(argv[++i], &ourview, NULL);
176	greg	1.21	if (rval < 0) {
177			sprintf(errmsg,
178			"cannot open view file \"%s\"",
179			argv[i]);
180			error(SYSTEM, errmsg);
181			} else if (rval == 0) {
182			sprintf(errmsg,
183			"bad view file \"%s\"",
184			argv[i]);
185			error(USER, errmsg);
186			} else
187			gotvfile += rval;
188	greg	1.1	break;
189			#endif
190	greg	1.11	case 'd': /* direct */
191	greg	1.1	switch (argv[i][2]) {
192	greg	1.13	case 't': /* threshold */
193	greg	1.49	check(3,"f");
194	greg	1.11	shadthresh = atof(argv[++i]);
195	greg	1.1	break;
196	greg	1.15	case 'c': /* certainty */
197	greg	1.49	check(3,"f");
198	greg	1.15	shadcert = atof(argv[++i]);
199			break;
200	greg	1.11	case 'j': /* jitter */
201	greg	1.49	check(3,"f");
202	greg	1.1	dstrsrc = atof(argv[++i]);
203			break;
204	greg	1.47	case 'r': /* relays */
205	greg	1.49	check(3,"i");
206	greg	1.39	directrelay = atoi(argv[++i]);
207			break;
208	greg	1.47	case 'p': /* pretest */
209	greg	1.49	check(3,"i");
210	greg	1.40	vspretest = atoi(argv[++i]);
211	greg	1.42	break;
212	greg	1.47	case 'i': /* invis. */
213	greg	1.43	bool(3,directinvis);
214	greg	1.40	break;
215	greg	1.47	case 's': /* size */
216	greg	1.49	check(3,"f");
217	greg	1.47	srcsizerat = atof(argv[++i]);
218			break;
219	greg	1.1	default:
220	greg	1.10	goto badopt;
221	greg	1.1	}
222			break;
223			#if RPICT\|RVIEW
224			case 's': /* sample */
225			switch (argv[i][2]) {
226			case 'p': /* pixel */
227	greg	1.49	check(3,"i");
228	greg	1.1	psample = atoi(argv[++i]);
229			break;
230	greg	1.13	case 't': /* threshold */
231	greg	1.49	check(3,"f");
232	greg	1.1	maxdiff = atof(argv[++i]);
233			break;
234	greg	1.11	#if RPICT
235			case 'j': /* jitter */
236	greg	1.49	check(3,"f");
237	greg	1.11	dstrpix = atof(argv[++i]);
238			break;
239			#endif
240	greg	1.1	default:
241	greg	1.10	goto badopt;
242	greg	1.1	}
243			break;
244			#endif
245	greg	1.22	#if RPICT\|RTRACE
246	greg	1.1	case 'x': /* x resolution */
247	greg	1.49	check(2,"i");
248	greg	1.1	hresolu = atoi(argv[++i]);
249			break;
250			case 'y': /* y resolution */
251	greg	1.49	check(2,"i");
252	greg	1.1	vresolu = atoi(argv[++i]);
253			break;
254	greg	1.22	#endif
255			#if RPICT
256			case 'p': /* pixel aspect */
257	greg	1.49	check(2,"f");
258	greg	1.22	pixaspect = atof(argv[++i]);
259			break;
260			#endif
261	greg	1.1	case 'w': /* warnings */
262	greg	1.43	rval = wrnvec != NULL;
263			bool(2,rval);
264			wrnvec = rval ? stderr_v : NULL;
265	greg	1.1	break;
266			case 'e': /* error file */
267	greg	1.49	check(2,"s");
268	greg	1.1	errfile = argv[++i];
269			break;
270			case 'l': /* limit */
271			switch (argv[i][2]) {
272			case 'r': /* recursion */
273	greg	1.49	check(3,"i");
274	greg	1.1	maxdepth = atoi(argv[++i]);
275			break;
276			case 'w': /* weight */
277	greg	1.49	check(3,"f");
278	greg	1.1	minweight = atof(argv[++i]);
279			break;
280			default:
281	greg	1.10	goto badopt;
282	greg	1.1	}
283			break;
284	greg	1.36	case 'i': /* irradiance */
285	greg	1.43	bool(2,do_irrad);
286	greg	1.36	break;
287	greg	1.1	#if RPICT
288	greg	1.20	case 'z': /* z file */
289	greg	1.49	check(2,"s");
290	greg	1.20	zfile = argv[++i];
291			break;
292	greg	1.1	case 'r': /* recover file */
293	greg	1.49	check(2,"s");
294	greg	1.1	recover = argv[++i];
295	greg	1.50	rval = viewfile(recover, &ourview, &rs);
296			if (rval <= 0 \|\| rs.or != PIXSTANDARD) {
297	greg	1.5	sprintf(errmsg,
298			"cannot recover view parameters from \"%s\"", recover);
299			error(WARNING, errmsg);
300	greg	1.25	} else {
301	greg	1.4	gotvfile += rval;
302	greg	1.25	pixaspect = 0.0;
303	greg	1.50	hresolu = rs.xr;
304			vresolu = rs.yr;
305	greg	1.25	}
306	greg	1.1	break;
307			case 't': /* timer */
308	greg	1.49	check(2,"i");
309	greg	1.1	ralrm = atoi(argv[++i]);
310			break;
311			#endif
312			case 'a': /* ambient */
313			switch (argv[i][2]) {
314			case 'v': /* value */
315	greg	1.49	check(3,"fff");
316	greg	1.1	setcolor(ambval, atof(argv[i+1]),
317			atof(argv[i+2]),
318			atof(argv[i+3]));
319			i += 3;
320			break;
321			case 'a': /* accuracy */
322	greg	1.49	check(3,"f");
323	greg	1.1	ambacc = atof(argv[++i]);
324			break;
325			case 'r': /* resolution */
326	greg	1.49	check(3,"i");
327	greg	1.1	ambres = atoi(argv[++i]);
328			break;
329			case 'd': /* divisions */
330	greg	1.49	check(3,"i");
331	greg	1.1	ambdiv = atoi(argv[++i]);
332			break;
333			case 's': /* super-samp */
334	greg	1.49	check(3,"i");
335	greg	1.1	ambssamp = atoi(argv[++i]);
336			break;
337			case 'b': /* bounces */
338	greg	1.49	check(3,"i");
339	greg	1.1	ambounce = atoi(argv[++i]);
340			break;
341			case 'i': /* include */
342	greg	1.49	check(3,"s");
343	greg	1.1	if (ambincl != 1) {
344			ambincl = 1;
345			amblp = amblist;
346			}
347			*amblp++ = argv[++i];
348			break;
349			case 'e': /* exclude */
350	greg	1.49	check(3,"s");
351	greg	1.1	if (ambincl != 0) {
352			ambincl = 0;
353			amblp = amblist;
354			}
355			*amblp++ = argv[++i];
356			break;
357			case 'f': /* file */
358	greg	1.49	check(3,"s");
359	greg	1.1	ambfile= argv[++i];
360			break;
361			default:
362	greg	1.10	goto badopt;
363	greg	1.1	}
364			break;
365			#if RTRACE
366	greg	1.36	case 'I': /* immed. irradiance */
367	greg	1.43	bool(2,imm_irrad);
368	greg	1.36	break;
369	greg	1.1	case 'f': /* format i/o */
370			switch (argv[i][2]) {
371			case 'a': /* ascii */
372			case 'f': /* float */
373			case 'd': /* double */
374			inform = argv[i][2];
375			break;
376			default:
377	greg	1.10	goto badopt;
378	greg	1.1	}
379			switch (argv[i][3]) {
380			case '\0':
381			outform = inform;
382			break;
383			case 'a': /* ascii */
384			case 'f': /* float */
385			case 'd': /* double */
386	greg	1.49	check(4,"");
387	greg	1.1	outform = argv[i][3];
388			break;
389			default:
390	greg	1.10	goto badopt;
391	greg	1.1	}
392			break;
393			case 'o': /* output */
394			outvals = argv[i]+2;
395			break;
396	greg	1.44	case 'h': /* header output */
397			rval = loadflags & IO_INFO;
398			bool(2,rval);
399			loadflags = rval ? loadflags \| IO_INFO :
400			loadflags & ~IO_INFO;
401	greg	1.1	break;
402			#endif
403			#if RVIEW
404			case 'b': /* black and white */
405	greg	1.49	bool(2,greyscale);
406	greg	1.1	break;
407			case 'o': /* output device */
408	greg	1.49	check(2,"s");
409	greg	1.1	devname = argv[++i];
410			break;
411			#endif
412			default:
413	greg	1.19	goto badopt;
414	greg	1.1	}
415			}
416	greg	1.24	*amblp = NULL;
417	greg	1.1	#if RPICT\|RVIEW
418			err = setview(&ourview); /* set viewing parameters */
419			if (err != NULL)
420			error(USER, err);
421			#endif
422	greg	1.22	#if RPICT
423	greg	1.23	normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
424	greg	1.22	#endif
425	greg	1.1	/* set up signal handling */
426			sigdie(SIGINT, "Interrupt");
427			sigdie(SIGHUP, "Hangup");
428			sigdie(SIGTERM, "Terminate");
429			sigdie(SIGPIPE, "Broken pipe");
430	greg	1.45	sigdie(SIGALRM, "Alarm clock");
431	greg	1.1	#ifdef SIGXCPU
432			sigdie(SIGXCPU, "CPU limit exceeded");
433			sigdie(SIGXFSZ, "File size exceeded");
434			#endif
435			/* open error file */
436			if (errfile != NULL) {
437			if (freopen(errfile, "a", stderr) == NULL)
438	greg	1.14	quit(2);
439	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
440			getpid());
441			printargs(argc, argv, stderr);
442			fputs("\n", stderr);
443			fflush(stderr);
444			}
445			#ifdef NICE
446			nice(NICE); /* lower priority */
447			#endif
448	greg	1.19	/* get octree */
449	greg	1.1	#if RVIEW
450			loadflags &= ~IO_INFO;
451			#endif
452			if (i == argc)
453	greg	1.19	octname = NULL;
454			else if (i == argc-1)
455			octname = argv[i];
456	greg	1.1	else
457	greg	1.19	goto badopt;
458			#if RVIEW\|RTRACE
459			if (octname == NULL)
460			error(USER, "missing octree argument");
461	greg	1.1	#endif
462	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
463	greg	1.1
464			if (loadflags & IO_INFO) { /* print header */
465			printargs(i, argv, stdout);
466	greg	1.46	printf("SOFTWARE= %s\n", VersionID);
467	greg	1.1	#if RPICT
468			if (gotvfile) {
469			printf(VIEWSTR);
470			fprintview(&ourview, stdout);
471			printf("\n");
472			}
473	greg	1.23	if (pixaspect < .99 \|\| pixaspect > 1.01)
474	greg	1.22	fputaspect(pixaspect, stdout);
475	greg	1.35	fputformat(COLRFMT, stdout);
476			#endif
477			#if RTRACE
478			fputformat( outform=='a' ? "ascii" :
479			outform=='f' ? "float" :
480			"double", stdout );
481	greg	1.1	#endif
482			printf("\n");
483			}
484
485			marksources(); /* find and mark sources */
486
487	greg	1.24	setambient(ambfile); /* initialize ambient calculation */
488	greg	1.1
489			#if RPICT
490	greg	1.20	render(zfile, recover); /* render the scene */
491	greg	1.1	#endif
492			#if RTRACE
493			rtrace(NULL); /* trace rays from stdin */
494			#endif
495			#if RVIEW
496			rview(); /* go */
497			#endif
498			quit(0);
499	greg	1.19
500			badopt:
501			sprintf(errmsg, "command line error at '%s'", argv[i]);
502			error(USER, errmsg);
503
504	greg	1.10	#undef check
505	greg	1.43	#undef bool
506	greg	1.1	}
507
508
509			eputs(s) /* error output */
510			char *s;
511			{
512			if (errvec != NULL)
513			(*errvec)(s);
514			}
515
516
517			wputs(s) /* warning output */
518			char *s;
519			{
520	greg	2.3	int lasterrno = errno; /* save errno */
521
522	greg	1.1	if (wrnvec != NULL)
523			(*wrnvec)(s);
524	greg	2.3
525			errno = lasterrno;
526	greg	1.1	}
527
528
529			cputs(s) /* command error output */
530			char *s;
531			{
532			if (cmdvec != NULL)
533			(*cmdvec)(s);
534			}
535
536
537			stderr_v(s) /* put string to stderr */
538			register char *s;
539			{
540	greg	1.26	static int midline = 0;
541	greg	1.1
542	greg	1.27	if (!*s)
543			return;
544	greg	1.26	if (!midline++) {
545	greg	1.1	fputs(progname, stderr);
546			fputs(": ", stderr);
547			}
548			fputs(s, stderr);
549	greg	1.27	if (s[strlen(s)-1] == '\n') {
550	greg	1.1	fflush(stderr);
551	greg	1.26	midline = 0;
552	greg	1.1	}
553			}
554
555
556			onsig(signo) /* fatal signal */
557			int signo;
558			{
559	greg	1.8	static int gotsig = 0;
560
561			if (gotsig++) /* two signals and we're gone! */
562	greg	1.9	_exit(signo);
563	greg	1.8
564	greg	1.48	alarm(15); /* allow 15 seconds to clean up */
565			signal(SIGALRM, SIG_DFL); /* make certain we do die */
566	greg	1.1	eputs("signal - ");
567			eputs(sigerr[signo]);
568			eputs("\n");
569	greg	1.14	quit(3);
570	greg	1.1	}
571
572
573			sigdie(signo, msg) /* set fatal signal */
574			int signo;
575			char *msg;
576			{
577			if (signal(signo, onsig) == SIG_IGN)
578			signal(signo, SIG_IGN);
579			sigerr[signo] = msg;
580			}
581
582
583			printdefaults() /* print default values to stdout */
584			{
585			register char *cp;
586
587	greg	1.43	#if RTRACE
588			if (imm_irrad)
589			printf("-I+\t\t\t\t# immediate irradiance on\n");
590			else
591			#endif
592			printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
593			"-i-\t\t\t\t# irradiance calculation off\n");
594	greg	1.49	#if RVIEW
595			printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" :
596			"-b-\t\t\t\t# greyscale off\n");
597			#endif
598	greg	1.1	#if RPICT\|RVIEW
599	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
600	greg	1.1	ourview.type==VT_PER ? "perspective" :
601			ourview.type==VT_PAR ? "parallel" :
602	greg	1.28	ourview.type==VT_HEM ? "hemispherical" :
603			ourview.type==VT_ANG ? "angular" :
604	greg	1.1	"unknown");
605			printf("-vp %f %f %f\t# view point\n",
606			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
607			printf("-vd %f %f %f\t# view direction\n",
608			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
609			printf("-vu %f %f %f\t# view up\n",
610			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
611			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
612			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
613	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
614			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
615	greg	1.1	#endif
616	greg	1.22	#if RPICT\|RTRACE
617	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
618			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
619	greg	1.22	#endif
620			#if RPICT
621	greg	1.23	printf("-p %f\t\t\t# pixel aspect ratio\n", pixaspect);
622	greg	1.22	#endif
623	greg	1.1	#if RPICT\|RVIEW
624			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
625	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
626	greg	1.22	#endif
627	greg	1.11	#if RPICT
628			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
629	greg	1.1	#endif
630	greg	1.29	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
631			printf("-dc %f\t\t\t# direct certainty\n", shadcert);
632			printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
633	greg	1.47	printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
634	greg	1.39	printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
635	greg	1.40	printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
636	greg	1.43	printf(directinvis ? "-di+\t\t\t\t# direct invisibility on\n" :
637			"-di-\t\t\t\t# direct invisibility off\n");
638	greg	1.1	printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
639			colval(ambval,GRN), colval(ambval, BLU));
640			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
641			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
642			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
643			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
644			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
645			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
646			printf("-lw %f\t\t\t# limit weight\n", minweight);
647			#if RPICT
648			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
649			#endif
650			#if RVIEW
651			printf("-o %s\t\t\t\t# output device\n", devname);
652			#endif
653			#if RTRACE
654			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
655			inform, outform,
656			inform=='a' ? "ascii" :
657			inform=='f' ? "float" : "double",
658			outform=='a' ? "ascii" :
659			outform=='f' ? "float" : "double");
660			printf("-o%s\t\t\t\t# output", outvals);
661			for (cp = outvals; *cp; cp++)
662			switch (*cp) {
663			case 't': printf(" trace"); break;
664			case 'o': printf(" origin"); break;
665			case 'd': printf(" direction"); break;
666			case 'v': printf(" value"); break;
667			case 'l': printf(" length"); break;
668			case 'p': printf(" point"); break;
669			case 'n': printf(" normal"); break;
670			case 's': printf(" surface"); break;
671			case 'w': printf(" weight"); break;
672			case 'm': printf(" modifier"); break;
673			}
674			printf("\n");
675			#endif
676	greg	1.43	printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
677			"-w-\t\t\t\t# warning messages off\n");
678	greg	1.1	}