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  "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 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(olen,narg)       if (argv[i][olen] || narg >= argc-i) 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 double  atof();
        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;
        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(3,1);
                        rval = viewfile(argv[++i], &ourview, 0, 0);
                        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(3,1);
                                shadthresh = atof(argv[++i]);
                                break;
                        case 'c':                               /* certainty */
                                check(3,1);
                                shadcert = atof(argv[++i]);
                                break;
                        case 'j':                               /* jitter */
                                check(3,1);
                                dstrsrc = atof(argv[++i]);
                                break;
                        case 'r':
                                check(3,1);
                                directrelay = atoi(argv[++i]);
                                break;
                        case 'p':
                                check(3,1);
                                vspretest = atoi(argv[++i]);
                                break;
                        case 'i':
                                bool(3,directinvis);
                                break;
                        default:
                                goto badopt;
                        }
                        break;
#if  RPICT|RVIEW
                case 's':                               /* sample */
                        switch (argv[i][2]) {
                        case 'p':                               /* pixel */
                                check(3,1);
                                psample = atoi(argv[++i]);
                                break;
                        case 't':                               /* threshold */
                                check(3,1);
                                maxdiff = atof(argv[++i]);
                                break;
#if  RPICT
                        case 'j':                               /* jitter */
                                check(3,1);
                                dstrpix = atof(argv[++i]);
                                break;
#endif
                        default:
                                goto badopt;
                        }
                        break;
#endif
#if  RPICT|RTRACE
                case 'x':                               /* x resolution */
                        check(2,1);
                        hresolu = atoi(argv[++i]);
                        break;
                case 'y':                               /* y resolution */
                        check(2,1);
                        vresolu = atoi(argv[++i]);
                        break;
#endif
#if  RPICT      
                case 'p':                               /* pixel aspect */
                        check(2,1);
                        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(2,1);
                        errfile = argv[++i];
                        break;
                case 'l':                               /* limit */
                        switch (argv[i][2]) {
                        case 'r':                               /* recursion */
                                check(3,1);
                                maxdepth = atoi(argv[++i]);
                                break;
                        case 'w':                               /* weight */
                                check(3,1);
                                minweight = atof(argv[++i]);
                                break;
                        default:
                                goto badopt;
                        }
                        break;
                case 'i':                               /* irradiance */
                        bool(2,do_irrad);
                        break;
#if  RPICT
                case 'z':                               /* z file */
                        check(2,1);
                        zfile = argv[++i];
                        break;
                case 'r':                               /* recover file */
                        check(2,1);
                        recover = argv[++i];
                        rval = viewfile(recover, &ourview, &hresolu, &vresolu);
                        if (rval <= 0) {
                                sprintf(errmsg,
                        "cannot recover view parameters from \"%s\"", recover);
                                error(WARNING, errmsg);
                        } else {
                                gotvfile += rval;
                                pixaspect = 0.0;
                        }
                        break;
                case 't':                               /* timer */
                        check(2,1);
                        ralrm = atoi(argv[++i]);
                        break;
#endif
                case 'a':                               /* ambient */
                        switch (argv[i][2]) {
                        case 'v':                               /* value */
                                check(3,3);
                                setcolor(ambval, atof(argv[i+1]),
                                                atof(argv[i+2]),
                                                atof(argv[i+3]));
                                i += 3;
                                break;
                        case 'a':                               /* accuracy */
                                check(3,1);
                                ambacc = atof(argv[++i]);
                                break;
                        case 'r':                               /* resolution */
                                check(3,1);
                                ambres = atoi(argv[++i]);
                                break;
                        case 'd':                               /* divisions */
                                check(3,1);
                                ambdiv = atoi(argv[++i]);
                                break;
                        case 's':                               /* super-samp */
                                check(3,1);
                                ambssamp = atoi(argv[++i]);
                                break;
                        case 'b':                               /* bounces */
                                check(3,1);
                                ambounce = atoi(argv[++i]);
                                break;
                        case 'i':                               /* include */
                                check(3,1);
                                if (ambincl != 1) {
                                        ambincl = 1;
                                        amblp = amblist;
                                }
                                *amblp++ = argv[++i];
                                break;
                        case 'e':                               /* exclude */
                                check(3,1);
                                if (ambincl != 0) {
                                        ambincl = 0;
                                        amblp = amblist;
                                }
                                *amblp++ = argv[++i];
                                break;
                        case 'f':                               /* file */
                                check(3,1);
                                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(4,0);
                                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 */
                        check(2,0);
                        greyscale = !greyscale;
                        break;
                case 'o':                               /* output device */
                        check(2,1);
                        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;
{
        if (wrnvec != NULL)
                (*wrnvec)(s);
}


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);

        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  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("-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:	1.46
Committed:	Thu Oct 10 12:08:53 1991 UTC (33 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.45:	+7 -0 lines
Log Message:	changed SOFT= to SOFTWARE=
#	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			#include "octree.h"
27
28			#include <signal.h>
29
30			#include "view.h"
31
32			#ifndef DEFPATH
33			#define DEFPATH ":/usr/local/lib/ray"
34			#endif
35	greg	1.17	#ifndef ULIBVAR
36	greg	1.1	#define ULIBVAR "RAYPATH"
37	greg	1.17	#endif
38	greg	1.1
39			char progname; / argv[0] */
40
41	greg	1.19	char octname; / octree name */
42
43	greg	1.1	char libpath; / library directory list */
44
45			char sigerr[NSIG]; / signal error messages */
46
47	greg	1.46	extern char VersionID[]; /* version ID string */
48
49	greg	1.1	extern int stderr_v(); /* standard error output */
50			int (errvec)() = stderr_v; / error output vector */
51			int (wrnvec)() = stderr_v; / warning output vector */
52			int (cmdvec)() = NULL; / command error vector */
53
54			int (trace)() = NULL; / trace call */
55	greg	1.36	int do_irrad = 0; /* compute irradiance? */
56	greg	1.1
57	greg	1.34	extern long time();
58			long tstart; /* start time */
59
60	greg	1.24	extern int ambnotify(); /* new object notify functions */
61			int (*addobjnotify[])() = {ambnotify, NULL};
62
63	greg	1.1	CUBE thescene; /* our scene */
64
65	greg	1.36	extern int imm_irrad; /* calculate immediate irradiance? */
66
67	greg	1.1	extern int ralrm; /* seconds between reports */
68
69			extern int greyscale; /* map colors to brightness? */
70			extern char devname; / output device name */
71
72			extern int inform; /* input format */
73			extern int outform; /* output format */
74			extern char outvals; / output values */
75
76			extern VIEW ourview; /* viewing parameters */
77
78			extern int hresolu; /* horizontal resolution */
79			extern int vresolu; /* vertical resolution */
80	greg	1.22	extern double pixaspect; /* pixel aspect ratio */
81	greg	1.1
82			extern int psample; /* pixel sample size */
83			extern double maxdiff; /* max. sample difference */
84	greg	1.11	extern double dstrpix; /* square pixel distribution */
85	greg	1.1
86			extern double dstrsrc; /* square source distribution */
87	greg	1.11	extern double shadthresh; /* shadow threshold */
88	greg	1.15	extern double shadcert; /* shadow testing certainty */
89	greg	1.39	extern int directrelay; /* number of source relays */
90	greg	1.40	extern int vspretest; /* virtual source pretest density */
91	greg	1.42	extern int directinvis; /* light sources invisible to eye? */
92	greg	1.1
93			extern int maxdepth; /* maximum recursion depth */
94			extern double minweight; /* minimum ray weight */
95
96			extern COLOR ambval; /* ambient value */
97			extern double ambacc; /* ambient accuracy */
98			extern int ambres; /* ambient resolution */
99			extern int ambdiv; /* ambient divisions */
100			extern int ambssamp; /* ambient super-samples */
101			extern int ambounce; /* ambient bounces */
102			extern char amblist[]; / ambient include/exclude list */
103			extern int ambincl; /* include == 1, exclude == 0 */
104
105
106			main(argc, argv)
107			int argc;
108			char *argv[];
109			{
110	greg	1.16	#define check(olen,narg) if (argv[i][olen] \|\| narg >= argc-i) goto badopt
111	greg	1.43	#define bool(olen,var) switch (argv[i][olen]) { \
112			case '\0': var = !var; break; \
113			case 'y': case 'Y': case 't': case 'T': \
114			case '+': case '1': var = 1; break; \
115			case 'n': case 'N': case 'f': case 'F': \
116			case '-': case '0': var = 0; break; \
117			default: goto badopt; }
118	greg	1.45	extern double atof();
119			extern char *getenv();
120	greg	1.1	char *err;
121			char *recover = NULL;
122	greg	1.20	char *zfile = NULL;
123	greg	1.1	char *errfile = NULL;
124			char *ambfile = NULL;
125			char **amblp = amblist;
126			int loadflags = ~IO_FILES;
127	greg	1.4	int rval, gotvfile = 0;
128	greg	1.1	int i;
129	greg	1.34	/* record start time */
130			tstart = time((long *)0);
131	greg	1.1	/* global program name */
132			progname = argv[0];
133			/* get library path */
134			if ((libpath = getenv(ULIBVAR)) == NULL)
135			libpath = DEFPATH;
136	greg	1.31	/* initialize object types */
137			initotypes();
138	greg	1.37	/* initialize urand */
139	greg	1.41	initurand(2048);
140	greg	1.10	/* option city */
141	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
142	greg	1.46	if (!strcmp(argv[i], "-version")) {
143			puts(VersionID);
144			quit(0);
145			}
146	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
147			!strcmp(argv[i], "-help")) {
148	greg	1.1	printdefaults();
149			quit(0);
150			}
151			#if RVIEW
152			if (!strcmp(argv[i], "-devices")) {
153			printdevices();
154			quit(0);
155			}
156			#endif
157	greg	1.21	#if RPICT\|RVIEW
158			rval = getviewopt(&ourview, argc-i, argv+i);
159			if (rval >= 0) {
160			i += rval;
161			continue;
162			}
163			#endif
164	greg	1.1	switch (argv[i][1]) {
165			#if RPICT\|RVIEW
166	greg	1.21	case 'v': /* view file */
167			if (argv[i][2] != 'f')
168	greg	1.10	goto badopt;
169	greg	1.21	check(3,1);
170	greg	1.25	rval = viewfile(argv[++i], &ourview, 0, 0);
171	greg	1.21	if (rval < 0) {
172			sprintf(errmsg,
173			"cannot open view file \"%s\"",
174			argv[i]);
175			error(SYSTEM, errmsg);
176			} else if (rval == 0) {
177			sprintf(errmsg,
178			"bad view file \"%s\"",
179			argv[i]);
180			error(USER, errmsg);
181			} else
182			gotvfile += rval;
183	greg	1.1	break;
184			#endif
185	greg	1.11	case 'd': /* direct */
186	greg	1.1	switch (argv[i][2]) {
187	greg	1.13	case 't': /* threshold */
188	greg	1.10	check(3,1);
189	greg	1.11	shadthresh = atof(argv[++i]);
190	greg	1.1	break;
191	greg	1.15	case 'c': /* certainty */
192			check(3,1);
193			shadcert = atof(argv[++i]);
194			break;
195	greg	1.11	case 'j': /* jitter */
196	greg	1.10	check(3,1);
197	greg	1.1	dstrsrc = atof(argv[++i]);
198			break;
199	greg	1.39	case 'r':
200			check(3,1);
201			directrelay = atoi(argv[++i]);
202			break;
203	greg	1.40	case 'p':
204			check(3,1);
205			vspretest = atoi(argv[++i]);
206	greg	1.42	break;
207			case 'i':
208	greg	1.43	bool(3,directinvis);
209	greg	1.40	break;
210	greg	1.1	default:
211	greg	1.10	goto badopt;
212	greg	1.1	}
213			break;
214			#if RPICT\|RVIEW
215			case 's': /* sample */
216			switch (argv[i][2]) {
217			case 'p': /* pixel */
218	greg	1.10	check(3,1);
219	greg	1.1	psample = atoi(argv[++i]);
220			break;
221	greg	1.13	case 't': /* threshold */
222	greg	1.10	check(3,1);
223	greg	1.1	maxdiff = atof(argv[++i]);
224			break;
225	greg	1.11	#if RPICT
226			case 'j': /* jitter */
227			check(3,1);
228			dstrpix = atof(argv[++i]);
229			break;
230			#endif
231	greg	1.1	default:
232	greg	1.10	goto badopt;
233	greg	1.1	}
234			break;
235			#endif
236	greg	1.22	#if RPICT\|RTRACE
237	greg	1.1	case 'x': /* x resolution */
238	greg	1.10	check(2,1);
239	greg	1.1	hresolu = atoi(argv[++i]);
240			break;
241			case 'y': /* y resolution */
242	greg	1.10	check(2,1);
243	greg	1.1	vresolu = atoi(argv[++i]);
244			break;
245	greg	1.22	#endif
246			#if RPICT
247			case 'p': /* pixel aspect */
248	greg	1.23	check(2,1);
249	greg	1.22	pixaspect = atof(argv[++i]);
250			break;
251			#endif
252	greg	1.1	case 'w': /* warnings */
253	greg	1.43	rval = wrnvec != NULL;
254			bool(2,rval);
255			wrnvec = rval ? stderr_v : NULL;
256	greg	1.1	break;
257			case 'e': /* error file */
258	greg	1.10	check(2,1);
259	greg	1.1	errfile = argv[++i];
260			break;
261			case 'l': /* limit */
262			switch (argv[i][2]) {
263			case 'r': /* recursion */
264	greg	1.10	check(3,1);
265	greg	1.1	maxdepth = atoi(argv[++i]);
266			break;
267			case 'w': /* weight */
268	greg	1.10	check(3,1);
269	greg	1.1	minweight = atof(argv[++i]);
270			break;
271			default:
272	greg	1.10	goto badopt;
273	greg	1.1	}
274			break;
275	greg	1.36	case 'i': /* irradiance */
276	greg	1.43	bool(2,do_irrad);
277	greg	1.36	break;
278	greg	1.1	#if RPICT
279	greg	1.20	case 'z': /* z file */
280			check(2,1);
281			zfile = argv[++i];
282			break;
283	greg	1.1	case 'r': /* recover file */
284	greg	1.10	check(2,1);
285	greg	1.1	recover = argv[++i];
286	greg	1.25	rval = viewfile(recover, &ourview, &hresolu, &vresolu);
287	greg	1.5	if (rval <= 0) {
288			sprintf(errmsg,
289			"cannot recover view parameters from \"%s\"", recover);
290			error(WARNING, errmsg);
291	greg	1.25	} else {
292	greg	1.4	gotvfile += rval;
293	greg	1.25	pixaspect = 0.0;
294			}
295	greg	1.1	break;
296			case 't': /* timer */
297	greg	1.10	check(2,1);
298	greg	1.1	ralrm = atoi(argv[++i]);
299			break;
300			#endif
301			case 'a': /* ambient */
302			switch (argv[i][2]) {
303			case 'v': /* value */
304	greg	1.10	check(3,3);
305	greg	1.1	setcolor(ambval, atof(argv[i+1]),
306			atof(argv[i+2]),
307			atof(argv[i+3]));
308			i += 3;
309			break;
310			case 'a': /* accuracy */
311	greg	1.10	check(3,1);
312	greg	1.1	ambacc = atof(argv[++i]);
313			break;
314			case 'r': /* resolution */
315	greg	1.10	check(3,1);
316	greg	1.1	ambres = atoi(argv[++i]);
317			break;
318			case 'd': /* divisions */
319	greg	1.10	check(3,1);
320	greg	1.1	ambdiv = atoi(argv[++i]);
321			break;
322			case 's': /* super-samp */
323	greg	1.10	check(3,1);
324	greg	1.1	ambssamp = atoi(argv[++i]);
325			break;
326			case 'b': /* bounces */
327	greg	1.10	check(3,1);
328	greg	1.1	ambounce = atoi(argv[++i]);
329			break;
330			case 'i': /* include */
331	greg	1.10	check(3,1);
332	greg	1.1	if (ambincl != 1) {
333			ambincl = 1;
334			amblp = amblist;
335			}
336			*amblp++ = argv[++i];
337			break;
338			case 'e': /* exclude */
339	greg	1.10	check(3,1);
340	greg	1.1	if (ambincl != 0) {
341			ambincl = 0;
342			amblp = amblist;
343			}
344			*amblp++ = argv[++i];
345			break;
346			case 'f': /* file */
347	greg	1.10	check(3,1);
348	greg	1.1	ambfile= argv[++i];
349			break;
350			default:
351	greg	1.10	goto badopt;
352	greg	1.1	}
353			break;
354			#if RTRACE
355	greg	1.36	case 'I': /* immed. irradiance */
356	greg	1.43	bool(2,imm_irrad);
357	greg	1.36	break;
358	greg	1.1	case 'f': /* format i/o */
359			switch (argv[i][2]) {
360			case 'a': /* ascii */
361			case 'f': /* float */
362			case 'd': /* double */
363			inform = argv[i][2];
364			break;
365			default:
366	greg	1.10	goto badopt;
367	greg	1.1	}
368			switch (argv[i][3]) {
369			case '\0':
370			outform = inform;
371			break;
372			case 'a': /* ascii */
373			case 'f': /* float */
374			case 'd': /* double */
375	greg	1.12	check(4,0);
376	greg	1.1	outform = argv[i][3];
377			break;
378			default:
379	greg	1.10	goto badopt;
380	greg	1.1	}
381			break;
382			case 'o': /* output */
383			outvals = argv[i]+2;
384			break;
385	greg	1.44	case 'h': /* header output */
386			rval = loadflags & IO_INFO;
387			bool(2,rval);
388			loadflags = rval ? loadflags \| IO_INFO :
389			loadflags & ~IO_INFO;
390	greg	1.1	break;
391			#endif
392			#if RVIEW
393			case 'b': /* black and white */
394	greg	1.10	check(2,0);
395	greg	1.1	greyscale = !greyscale;
396			break;
397			case 'o': /* output device */
398	greg	1.10	check(2,1);
399	greg	1.1	devname = argv[++i];
400			break;
401			#endif
402			default:
403	greg	1.19	goto badopt;
404	greg	1.1	}
405			}
406	greg	1.24	*amblp = NULL;
407	greg	1.1	#if RPICT\|RVIEW
408			err = setview(&ourview); /* set viewing parameters */
409			if (err != NULL)
410			error(USER, err);
411			#endif
412	greg	1.22	#if RPICT
413	greg	1.23	normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
414	greg	1.22	#endif
415	greg	1.1	/* set up signal handling */
416			sigdie(SIGINT, "Interrupt");
417			sigdie(SIGHUP, "Hangup");
418			sigdie(SIGTERM, "Terminate");
419			sigdie(SIGPIPE, "Broken pipe");
420	greg	1.45	sigdie(SIGALRM, "Alarm clock");
421	greg	1.1	#ifdef SIGXCPU
422			sigdie(SIGXCPU, "CPU limit exceeded");
423			sigdie(SIGXFSZ, "File size exceeded");
424			#endif
425			/* open error file */
426			if (errfile != NULL) {
427			if (freopen(errfile, "a", stderr) == NULL)
428	greg	1.14	quit(2);
429	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
430			getpid());
431			printargs(argc, argv, stderr);
432			fputs("\n", stderr);
433			fflush(stderr);
434			}
435			#ifdef NICE
436			nice(NICE); /* lower priority */
437			#endif
438	greg	1.19	/* get octree */
439	greg	1.1	#if RVIEW
440			loadflags &= ~IO_INFO;
441			#endif
442			if (i == argc)
443	greg	1.19	octname = NULL;
444			else if (i == argc-1)
445			octname = argv[i];
446	greg	1.1	else
447	greg	1.19	goto badopt;
448			#if RVIEW\|RTRACE
449			if (octname == NULL)
450			error(USER, "missing octree argument");
451	greg	1.1	#endif
452	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
453	greg	1.1
454			if (loadflags & IO_INFO) { /* print header */
455			printargs(i, argv, stdout);
456	greg	1.46	printf("SOFTWARE= %s\n", VersionID);
457	greg	1.1	#if RPICT
458			if (gotvfile) {
459			printf(VIEWSTR);
460			fprintview(&ourview, stdout);
461			printf("\n");
462			}
463	greg	1.23	if (pixaspect < .99 \|\| pixaspect > 1.01)
464	greg	1.22	fputaspect(pixaspect, stdout);
465	greg	1.35	fputformat(COLRFMT, stdout);
466			#endif
467			#if RTRACE
468			fputformat( outform=='a' ? "ascii" :
469			outform=='f' ? "float" :
470			"double", stdout );
471	greg	1.1	#endif
472			printf("\n");
473			}
474
475			marksources(); /* find and mark sources */
476
477	greg	1.24	setambient(ambfile); /* initialize ambient calculation */
478	greg	1.1
479			#if RPICT
480	greg	1.20	render(zfile, recover); /* render the scene */
481	greg	1.1	#endif
482			#if RTRACE
483			rtrace(NULL); /* trace rays from stdin */
484			#endif
485			#if RVIEW
486			rview(); /* go */
487			#endif
488			quit(0);
489	greg	1.19
490			badopt:
491			sprintf(errmsg, "command line error at '%s'", argv[i]);
492			error(USER, errmsg);
493
494	greg	1.10	#undef check
495	greg	1.43	#undef bool
496	greg	1.1	}
497
498
499			eputs(s) /* error output */
500			char *s;
501			{
502			if (errvec != NULL)
503			(*errvec)(s);
504			}
505
506
507			wputs(s) /* warning output */
508			char *s;
509			{
510			if (wrnvec != NULL)
511			(*wrnvec)(s);
512			}
513
514
515			cputs(s) /* command error output */
516			char *s;
517			{
518			if (cmdvec != NULL)
519			(*cmdvec)(s);
520			}
521
522
523			stderr_v(s) /* put string to stderr */
524			register char *s;
525			{
526	greg	1.26	static int midline = 0;
527	greg	1.1
528	greg	1.27	if (!*s)
529			return;
530	greg	1.26	if (!midline++) {
531	greg	1.1	fputs(progname, stderr);
532			fputs(": ", stderr);
533			}
534			fputs(s, stderr);
535	greg	1.27	if (s[strlen(s)-1] == '\n') {
536	greg	1.1	fflush(stderr);
537	greg	1.26	midline = 0;
538	greg	1.1	}
539			}
540
541
542			onsig(signo) /* fatal signal */
543			int signo;
544			{
545	greg	1.8	static int gotsig = 0;
546
547			if (gotsig++) /* two signals and we're gone! */
548	greg	1.9	_exit(signo);
549	greg	1.8
550	greg	1.1	eputs("signal - ");
551			eputs(sigerr[signo]);
552			eputs("\n");
553	greg	1.14	quit(3);
554	greg	1.1	}
555
556
557			sigdie(signo, msg) /* set fatal signal */
558			int signo;
559			char *msg;
560			{
561			if (signal(signo, onsig) == SIG_IGN)
562			signal(signo, SIG_IGN);
563			sigerr[signo] = msg;
564			}
565
566
567			printdefaults() /* print default values to stdout */
568			{
569			register char *cp;
570
571	greg	1.43	#if RTRACE
572			if (imm_irrad)
573			printf("-I+\t\t\t\t# immediate irradiance on\n");
574			else
575			#endif
576			printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
577			"-i-\t\t\t\t# irradiance calculation off\n");
578	greg	1.1	#if RPICT\|RVIEW
579	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
580	greg	1.1	ourview.type==VT_PER ? "perspective" :
581			ourview.type==VT_PAR ? "parallel" :
582	greg	1.28	ourview.type==VT_HEM ? "hemispherical" :
583			ourview.type==VT_ANG ? "angular" :
584	greg	1.1	"unknown");
585			printf("-vp %f %f %f\t# view point\n",
586			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
587			printf("-vd %f %f %f\t# view direction\n",
588			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
589			printf("-vu %f %f %f\t# view up\n",
590			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
591			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
592			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
593	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
594			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
595	greg	1.1	#endif
596	greg	1.22	#if RPICT\|RTRACE
597	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
598			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
599	greg	1.22	#endif
600			#if RPICT
601	greg	1.23	printf("-p %f\t\t\t# pixel aspect ratio\n", pixaspect);
602	greg	1.22	#endif
603	greg	1.1	#if RPICT\|RVIEW
604			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
605	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
606	greg	1.22	#endif
607	greg	1.11	#if RPICT
608			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
609	greg	1.1	#endif
610	greg	1.29	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
611			printf("-dc %f\t\t\t# direct certainty\n", shadcert);
612			printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
613	greg	1.39	printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
614	greg	1.40	printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
615	greg	1.43	printf(directinvis ? "-di+\t\t\t\t# direct invisibility on\n" :
616			"-di-\t\t\t\t# direct invisibility off\n");
617	greg	1.1	printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
618			colval(ambval,GRN), colval(ambval, BLU));
619			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
620			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
621			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
622			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
623			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
624			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
625			printf("-lw %f\t\t\t# limit weight\n", minweight);
626			#if RPICT
627			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
628			#endif
629			#if RVIEW
630			printf("-o %s\t\t\t\t# output device\n", devname);
631			#endif
632			#if RTRACE
633			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
634			inform, outform,
635			inform=='a' ? "ascii" :
636			inform=='f' ? "float" : "double",
637			outform=='a' ? "ascii" :
638			outform=='f' ? "float" : "double");
639			printf("-o%s\t\t\t\t# output", outvals);
640			for (cp = outvals; *cp; cp++)
641			switch (*cp) {
642			case 't': printf(" trace"); break;
643			case 'o': printf(" origin"); break;
644			case 'd': printf(" direction"); break;
645			case 'v': printf(" value"); break;
646			case 'l': printf(" length"); break;
647			case 'p': printf(" point"); break;
648			case 'n': printf(" normal"); break;
649			case 's': printf(" surface"); break;
650			case 'w': printf(" weight"); break;
651			case 'm': printf(" modifier"); break;
652			}
653			printf("\n");
654			#endif
655	greg	1.43	printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
656			"-w-\t\t\t\t# warning messages off\n");
657	greg	1.1	}