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 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;
        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;
{
        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);

        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:	1.50
Committed:	Mon Nov 11 14:02:48 1991 UTC (33 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.49:	+8 -3 lines
Log Message:	Improved handling of scanline ordering
#	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 double atof();
124			extern char *getenv();
125	greg	1.1	char *err;
126			char *recover = NULL;
127	greg	1.20	char *zfile = NULL;
128	greg	1.1	char *errfile = NULL;
129			char *ambfile = NULL;
130			char **amblp = amblist;
131			int loadflags = ~IO_FILES;
132	greg	1.4	int rval, gotvfile = 0;
133	greg	1.50	RESOLU rs;
134	greg	1.1	int i;
135	greg	1.34	/* record start time */
136			tstart = time((long *)0);
137	greg	1.1	/* global program name */
138			progname = argv[0];
139			/* get library path */
140			if ((libpath = getenv(ULIBVAR)) == NULL)
141			libpath = DEFPATH;
142	greg	1.31	/* initialize object types */
143			initotypes();
144	greg	1.37	/* initialize urand */
145	greg	1.41	initurand(2048);
146	greg	1.10	/* option city */
147	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
148	greg	1.46	if (!strcmp(argv[i], "-version")) {
149			puts(VersionID);
150			quit(0);
151			}
152	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
153			!strcmp(argv[i], "-help")) {
154	greg	1.1	printdefaults();
155			quit(0);
156			}
157			#if RVIEW
158			if (!strcmp(argv[i], "-devices")) {
159			printdevices();
160			quit(0);
161			}
162			#endif
163	greg	1.21	#if RPICT\|RVIEW
164			rval = getviewopt(&ourview, argc-i, argv+i);
165			if (rval >= 0) {
166			i += rval;
167			continue;
168			}
169			#endif
170	greg	1.1	switch (argv[i][1]) {
171			#if RPICT\|RVIEW
172	greg	1.21	case 'v': /* view file */
173			if (argv[i][2] != 'f')
174	greg	1.10	goto badopt;
175	greg	1.49	check(3,"s");
176	greg	1.50	rval = viewfile(argv[++i], &ourview, NULL);
177	greg	1.21	if (rval < 0) {
178			sprintf(errmsg,
179			"cannot open view file \"%s\"",
180			argv[i]);
181			error(SYSTEM, errmsg);
182			} else if (rval == 0) {
183			sprintf(errmsg,
184			"bad view file \"%s\"",
185			argv[i]);
186			error(USER, errmsg);
187			} else
188			gotvfile += rval;
189	greg	1.1	break;
190			#endif
191	greg	1.11	case 'd': /* direct */
192	greg	1.1	switch (argv[i][2]) {
193	greg	1.13	case 't': /* threshold */
194	greg	1.49	check(3,"f");
195	greg	1.11	shadthresh = atof(argv[++i]);
196	greg	1.1	break;
197	greg	1.15	case 'c': /* certainty */
198	greg	1.49	check(3,"f");
199	greg	1.15	shadcert = atof(argv[++i]);
200			break;
201	greg	1.11	case 'j': /* jitter */
202	greg	1.49	check(3,"f");
203	greg	1.1	dstrsrc = atof(argv[++i]);
204			break;
205	greg	1.47	case 'r': /* relays */
206	greg	1.49	check(3,"i");
207	greg	1.39	directrelay = atoi(argv[++i]);
208			break;
209	greg	1.47	case 'p': /* pretest */
210	greg	1.49	check(3,"i");
211	greg	1.40	vspretest = atoi(argv[++i]);
212	greg	1.42	break;
213	greg	1.47	case 'i': /* invis. */
214	greg	1.43	bool(3,directinvis);
215	greg	1.40	break;
216	greg	1.47	case 's': /* size */
217	greg	1.49	check(3,"f");
218	greg	1.47	srcsizerat = atof(argv[++i]);
219			break;
220	greg	1.1	default:
221	greg	1.10	goto badopt;
222	greg	1.1	}
223			break;
224			#if RPICT\|RVIEW
225			case 's': /* sample */
226			switch (argv[i][2]) {
227			case 'p': /* pixel */
228	greg	1.49	check(3,"i");
229	greg	1.1	psample = atoi(argv[++i]);
230			break;
231	greg	1.13	case 't': /* threshold */
232	greg	1.49	check(3,"f");
233	greg	1.1	maxdiff = atof(argv[++i]);
234			break;
235	greg	1.11	#if RPICT
236			case 'j': /* jitter */
237	greg	1.49	check(3,"f");
238	greg	1.11	dstrpix = atof(argv[++i]);
239			break;
240			#endif
241	greg	1.1	default:
242	greg	1.10	goto badopt;
243	greg	1.1	}
244			break;
245			#endif
246	greg	1.22	#if RPICT\|RTRACE
247	greg	1.1	case 'x': /* x resolution */
248	greg	1.49	check(2,"i");
249	greg	1.1	hresolu = atoi(argv[++i]);
250			break;
251			case 'y': /* y resolution */
252	greg	1.49	check(2,"i");
253	greg	1.1	vresolu = atoi(argv[++i]);
254			break;
255	greg	1.22	#endif
256			#if RPICT
257			case 'p': /* pixel aspect */
258	greg	1.49	check(2,"f");
259	greg	1.22	pixaspect = atof(argv[++i]);
260			break;
261			#endif
262	greg	1.1	case 'w': /* warnings */
263	greg	1.43	rval = wrnvec != NULL;
264			bool(2,rval);
265			wrnvec = rval ? stderr_v : NULL;
266	greg	1.1	break;
267			case 'e': /* error file */
268	greg	1.49	check(2,"s");
269	greg	1.1	errfile = argv[++i];
270			break;
271			case 'l': /* limit */
272			switch (argv[i][2]) {
273			case 'r': /* recursion */
274	greg	1.49	check(3,"i");
275	greg	1.1	maxdepth = atoi(argv[++i]);
276			break;
277			case 'w': /* weight */
278	greg	1.49	check(3,"f");
279	greg	1.1	minweight = atof(argv[++i]);
280			break;
281			default:
282	greg	1.10	goto badopt;
283	greg	1.1	}
284			break;
285	greg	1.36	case 'i': /* irradiance */
286	greg	1.43	bool(2,do_irrad);
287	greg	1.36	break;
288	greg	1.1	#if RPICT
289	greg	1.20	case 'z': /* z file */
290	greg	1.49	check(2,"s");
291	greg	1.20	zfile = argv[++i];
292			break;
293	greg	1.1	case 'r': /* recover file */
294	greg	1.49	check(2,"s");
295	greg	1.1	recover = argv[++i];
296	greg	1.50	rval = viewfile(recover, &ourview, &rs);
297			if (rval <= 0 \|\| rs.or != PIXSTANDARD) {
298	greg	1.5	sprintf(errmsg,
299			"cannot recover view parameters from \"%s\"", recover);
300			error(WARNING, errmsg);
301	greg	1.25	} else {
302	greg	1.4	gotvfile += rval;
303	greg	1.25	pixaspect = 0.0;
304	greg	1.50	hresolu = rs.xr;
305			vresolu = rs.yr;
306	greg	1.25	}
307	greg	1.1	break;
308			case 't': /* timer */
309	greg	1.49	check(2,"i");
310	greg	1.1	ralrm = atoi(argv[++i]);
311			break;
312			#endif
313			case 'a': /* ambient */
314			switch (argv[i][2]) {
315			case 'v': /* value */
316	greg	1.49	check(3,"fff");
317	greg	1.1	setcolor(ambval, atof(argv[i+1]),
318			atof(argv[i+2]),
319			atof(argv[i+3]));
320			i += 3;
321			break;
322			case 'a': /* accuracy */
323	greg	1.49	check(3,"f");
324	greg	1.1	ambacc = atof(argv[++i]);
325			break;
326			case 'r': /* resolution */
327	greg	1.49	check(3,"i");
328	greg	1.1	ambres = atoi(argv[++i]);
329			break;
330			case 'd': /* divisions */
331	greg	1.49	check(3,"i");
332	greg	1.1	ambdiv = atoi(argv[++i]);
333			break;
334			case 's': /* super-samp */
335	greg	1.49	check(3,"i");
336	greg	1.1	ambssamp = atoi(argv[++i]);
337			break;
338			case 'b': /* bounces */
339	greg	1.49	check(3,"i");
340	greg	1.1	ambounce = atoi(argv[++i]);
341			break;
342			case 'i': /* include */
343	greg	1.49	check(3,"s");
344	greg	1.1	if (ambincl != 1) {
345			ambincl = 1;
346			amblp = amblist;
347			}
348			*amblp++ = argv[++i];
349			break;
350			case 'e': /* exclude */
351	greg	1.49	check(3,"s");
352	greg	1.1	if (ambincl != 0) {
353			ambincl = 0;
354			amblp = amblist;
355			}
356			*amblp++ = argv[++i];
357			break;
358			case 'f': /* file */
359	greg	1.49	check(3,"s");
360	greg	1.1	ambfile= argv[++i];
361			break;
362			default:
363	greg	1.10	goto badopt;
364	greg	1.1	}
365			break;
366			#if RTRACE
367	greg	1.36	case 'I': /* immed. irradiance */
368	greg	1.43	bool(2,imm_irrad);
369	greg	1.36	break;
370	greg	1.1	case 'f': /* format i/o */
371			switch (argv[i][2]) {
372			case 'a': /* ascii */
373			case 'f': /* float */
374			case 'd': /* double */
375			inform = argv[i][2];
376			break;
377			default:
378	greg	1.10	goto badopt;
379	greg	1.1	}
380			switch (argv[i][3]) {
381			case '\0':
382			outform = inform;
383			break;
384			case 'a': /* ascii */
385			case 'f': /* float */
386			case 'd': /* double */
387	greg	1.49	check(4,"");
388	greg	1.1	outform = argv[i][3];
389			break;
390			default:
391	greg	1.10	goto badopt;
392	greg	1.1	}
393			break;
394			case 'o': /* output */
395			outvals = argv[i]+2;
396			break;
397	greg	1.44	case 'h': /* header output */
398			rval = loadflags & IO_INFO;
399			bool(2,rval);
400			loadflags = rval ? loadflags \| IO_INFO :
401			loadflags & ~IO_INFO;
402	greg	1.1	break;
403			#endif
404			#if RVIEW
405			case 'b': /* black and white */
406	greg	1.49	bool(2,greyscale);
407	greg	1.1	break;
408			case 'o': /* output device */
409	greg	1.49	check(2,"s");
410	greg	1.1	devname = argv[++i];
411			break;
412			#endif
413			default:
414	greg	1.19	goto badopt;
415	greg	1.1	}
416			}
417	greg	1.24	*amblp = NULL;
418	greg	1.1	#if RPICT\|RVIEW
419			err = setview(&ourview); /* set viewing parameters */
420			if (err != NULL)
421			error(USER, err);
422			#endif
423	greg	1.22	#if RPICT
424	greg	1.23	normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
425	greg	1.22	#endif
426	greg	1.1	/* set up signal handling */
427			sigdie(SIGINT, "Interrupt");
428			sigdie(SIGHUP, "Hangup");
429			sigdie(SIGTERM, "Terminate");
430			sigdie(SIGPIPE, "Broken pipe");
431	greg	1.45	sigdie(SIGALRM, "Alarm clock");
432	greg	1.1	#ifdef SIGXCPU
433			sigdie(SIGXCPU, "CPU limit exceeded");
434			sigdie(SIGXFSZ, "File size exceeded");
435			#endif
436			/* open error file */
437			if (errfile != NULL) {
438			if (freopen(errfile, "a", stderr) == NULL)
439	greg	1.14	quit(2);
440	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
441			getpid());
442			printargs(argc, argv, stderr);
443			fputs("\n", stderr);
444			fflush(stderr);
445			}
446			#ifdef NICE
447			nice(NICE); /* lower priority */
448			#endif
449	greg	1.19	/* get octree */
450	greg	1.1	#if RVIEW
451			loadflags &= ~IO_INFO;
452			#endif
453			if (i == argc)
454	greg	1.19	octname = NULL;
455			else if (i == argc-1)
456			octname = argv[i];
457	greg	1.1	else
458	greg	1.19	goto badopt;
459			#if RVIEW\|RTRACE
460			if (octname == NULL)
461			error(USER, "missing octree argument");
462	greg	1.1	#endif
463	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
464	greg	1.1
465			if (loadflags & IO_INFO) { /* print header */
466			printargs(i, argv, stdout);
467	greg	1.46	printf("SOFTWARE= %s\n", VersionID);
468	greg	1.1	#if RPICT
469			if (gotvfile) {
470			printf(VIEWSTR);
471			fprintview(&ourview, stdout);
472			printf("\n");
473			}
474	greg	1.23	if (pixaspect < .99 \|\| pixaspect > 1.01)
475	greg	1.22	fputaspect(pixaspect, stdout);
476	greg	1.35	fputformat(COLRFMT, stdout);
477			#endif
478			#if RTRACE
479			fputformat( outform=='a' ? "ascii" :
480			outform=='f' ? "float" :
481			"double", stdout );
482	greg	1.1	#endif
483			printf("\n");
484			}
485
486			marksources(); /* find and mark sources */
487
488	greg	1.24	setambient(ambfile); /* initialize ambient calculation */
489	greg	1.1
490			#if RPICT
491	greg	1.20	render(zfile, recover); /* render the scene */
492	greg	1.1	#endif
493			#if RTRACE
494			rtrace(NULL); /* trace rays from stdin */
495			#endif
496			#if RVIEW
497			rview(); /* go */
498			#endif
499			quit(0);
500	greg	1.19
501			badopt:
502			sprintf(errmsg, "command line error at '%s'", argv[i]);
503			error(USER, errmsg);
504
505	greg	1.10	#undef check
506	greg	1.43	#undef bool
507	greg	1.1	}
508
509
510			eputs(s) /* error output */
511			char *s;
512			{
513			if (errvec != NULL)
514			(*errvec)(s);
515			}
516
517
518			wputs(s) /* warning output */
519			char *s;
520			{
521			if (wrnvec != NULL)
522			(*wrnvec)(s);
523			}
524
525
526			cputs(s) /* command error output */
527			char *s;
528			{
529			if (cmdvec != NULL)
530			(*cmdvec)(s);
531			}
532
533
534			stderr_v(s) /* put string to stderr */
535			register char *s;
536			{
537	greg	1.26	static int midline = 0;
538	greg	1.1
539	greg	1.27	if (!*s)
540			return;
541	greg	1.26	if (!midline++) {
542	greg	1.1	fputs(progname, stderr);
543			fputs(": ", stderr);
544			}
545			fputs(s, stderr);
546	greg	1.27	if (s[strlen(s)-1] == '\n') {
547	greg	1.1	fflush(stderr);
548	greg	1.26	midline = 0;
549	greg	1.1	}
550			}
551
552
553			onsig(signo) /* fatal signal */
554			int signo;
555			{
556	greg	1.8	static int gotsig = 0;
557
558			if (gotsig++) /* two signals and we're gone! */
559	greg	1.9	_exit(signo);
560	greg	1.8
561	greg	1.48	alarm(15); /* allow 15 seconds to clean up */
562			signal(SIGALRM, SIG_DFL); /* make certain we do die */
563	greg	1.1	eputs("signal - ");
564			eputs(sigerr[signo]);
565			eputs("\n");
566	greg	1.14	quit(3);
567	greg	1.1	}
568
569
570			sigdie(signo, msg) /* set fatal signal */
571			int signo;
572			char *msg;
573			{
574			if (signal(signo, onsig) == SIG_IGN)
575			signal(signo, SIG_IGN);
576			sigerr[signo] = msg;
577			}
578
579
580			printdefaults() /* print default values to stdout */
581			{
582			register char *cp;
583
584	greg	1.43	#if RTRACE
585			if (imm_irrad)
586			printf("-I+\t\t\t\t# immediate irradiance on\n");
587			else
588			#endif
589			printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
590			"-i-\t\t\t\t# irradiance calculation off\n");
591	greg	1.49	#if RVIEW
592			printf(greyscale ? "-b+\t\t\t\t# greyscale on\n" :
593			"-b-\t\t\t\t# greyscale off\n");
594			#endif
595	greg	1.1	#if RPICT\|RVIEW
596	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
597	greg	1.1	ourview.type==VT_PER ? "perspective" :
598			ourview.type==VT_PAR ? "parallel" :
599	greg	1.28	ourview.type==VT_HEM ? "hemispherical" :
600			ourview.type==VT_ANG ? "angular" :
601	greg	1.1	"unknown");
602			printf("-vp %f %f %f\t# view point\n",
603			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
604			printf("-vd %f %f %f\t# view direction\n",
605			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
606			printf("-vu %f %f %f\t# view up\n",
607			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
608			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
609			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
610	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
611			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
612	greg	1.1	#endif
613	greg	1.22	#if RPICT\|RTRACE
614	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
615			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
616	greg	1.22	#endif
617			#if RPICT
618	greg	1.23	printf("-p %f\t\t\t# pixel aspect ratio\n", pixaspect);
619	greg	1.22	#endif
620	greg	1.1	#if RPICT\|RVIEW
621			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
622	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
623	greg	1.22	#endif
624	greg	1.11	#if RPICT
625			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
626	greg	1.1	#endif
627	greg	1.29	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
628			printf("-dc %f\t\t\t# direct certainty\n", shadcert);
629			printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
630	greg	1.47	printf("-ds %f\t\t\t# direct sampling\n", srcsizerat);
631	greg	1.39	printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
632	greg	1.40	printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
633	greg	1.43	printf(directinvis ? "-di+\t\t\t\t# direct invisibility on\n" :
634			"-di-\t\t\t\t# direct invisibility off\n");
635	greg	1.1	printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
636			colval(ambval,GRN), colval(ambval, BLU));
637			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
638			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
639			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
640			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
641			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
642			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
643			printf("-lw %f\t\t\t# limit weight\n", minweight);
644			#if RPICT
645			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
646			#endif
647			#if RVIEW
648			printf("-o %s\t\t\t\t# output device\n", devname);
649			#endif
650			#if RTRACE
651			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
652			inform, outform,
653			inform=='a' ? "ascii" :
654			inform=='f' ? "float" : "double",
655			outform=='a' ? "ascii" :
656			outform=='f' ? "float" : "double");
657			printf("-o%s\t\t\t\t# output", outvals);
658			for (cp = outvals; *cp; cp++)
659			switch (*cp) {
660			case 't': printf(" trace"); break;
661			case 'o': printf(" origin"); break;
662			case 'd': printf(" direction"); break;
663			case 'v': printf(" value"); break;
664			case 'l': printf(" length"); break;
665			case 'p': printf(" point"); break;
666			case 'n': printf(" normal"); break;
667			case 's': printf(" surface"); break;
668			case 'w': printf(" weight"); break;
669			case 'm': printf(" modifier"); break;
670			}
671			printf("\n");
672			#endif
673	greg	1.43	printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
674			"-w-\t\t\t\t# warning messages off\n");
675	greg	1.1	}