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 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], "-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);
#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:	1.45
Committed:	Thu Sep 19 13:55:49 1991 UTC (33 years, 7 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.44:	+3 -8 lines
Log Message:	improved ALRM signal handling for SYSV
#	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			extern int stderr_v(); /* standard error output */
48			int (errvec)() = stderr_v; / error output vector */
49			int (wrnvec)() = stderr_v; / warning output vector */
50			int (cmdvec)() = NULL; / command error vector */
51
52			int (trace)() = NULL; / trace call */
53	greg	1.36	int do_irrad = 0; /* compute irradiance? */
54	greg	1.1
55	greg	1.34	extern long time();
56			long tstart; /* start time */
57
58	greg	1.24	extern int ambnotify(); /* new object notify functions */
59			int (*addobjnotify[])() = {ambnotify, NULL};
60
61	greg	1.1	CUBE thescene; /* our scene */
62
63	greg	1.36	extern int imm_irrad; /* calculate immediate irradiance? */
64
65	greg	1.1	extern int ralrm; /* seconds between reports */
66
67			extern int greyscale; /* map colors to brightness? */
68			extern char devname; / output device name */
69
70			extern int inform; /* input format */
71			extern int outform; /* output format */
72			extern char outvals; / output values */
73
74			extern VIEW ourview; /* viewing parameters */
75
76			extern int hresolu; /* horizontal resolution */
77			extern int vresolu; /* vertical resolution */
78	greg	1.22	extern double pixaspect; /* pixel aspect ratio */
79	greg	1.1
80			extern int psample; /* pixel sample size */
81			extern double maxdiff; /* max. sample difference */
82	greg	1.11	extern double dstrpix; /* square pixel distribution */
83	greg	1.1
84			extern double dstrsrc; /* square source distribution */
85	greg	1.11	extern double shadthresh; /* shadow threshold */
86	greg	1.15	extern double shadcert; /* shadow testing certainty */
87	greg	1.39	extern int directrelay; /* number of source relays */
88	greg	1.40	extern int vspretest; /* virtual source pretest density */
89	greg	1.42	extern int directinvis; /* light sources invisible to eye? */
90	greg	1.1
91			extern int maxdepth; /* maximum recursion depth */
92			extern double minweight; /* minimum ray weight */
93
94			extern COLOR ambval; /* ambient value */
95			extern double ambacc; /* ambient accuracy */
96			extern int ambres; /* ambient resolution */
97			extern int ambdiv; /* ambient divisions */
98			extern int ambssamp; /* ambient super-samples */
99			extern int ambounce; /* ambient bounces */
100			extern char amblist[]; / ambient include/exclude list */
101			extern int ambincl; /* include == 1, exclude == 0 */
102
103
104			main(argc, argv)
105			int argc;
106			char *argv[];
107			{
108	greg	1.16	#define check(olen,narg) if (argv[i][olen] \|\| narg >= argc-i) goto badopt
109	greg	1.43	#define bool(olen,var) switch (argv[i][olen]) { \
110			case '\0': var = !var; break; \
111			case 'y': case 'Y': case 't': case 'T': \
112			case '+': case '1': var = 1; break; \
113			case 'n': case 'N': case 'f': case 'F': \
114			case '-': case '0': var = 0; break; \
115			default: goto badopt; }
116	greg	1.45	extern double atof();
117			extern char *getenv();
118	greg	1.1	char *err;
119			char *recover = NULL;
120	greg	1.20	char *zfile = NULL;
121	greg	1.1	char *errfile = NULL;
122			char *ambfile = NULL;
123			char **amblp = amblist;
124			int loadflags = ~IO_FILES;
125	greg	1.4	int rval, gotvfile = 0;
126	greg	1.1	int i;
127	greg	1.34	/* record start time */
128			tstart = time((long *)0);
129	greg	1.1	/* global program name */
130			progname = argv[0];
131			/* get library path */
132			if ((libpath = getenv(ULIBVAR)) == NULL)
133			libpath = DEFPATH;
134	greg	1.31	/* initialize object types */
135			initotypes();
136	greg	1.37	/* initialize urand */
137	greg	1.41	initurand(2048);
138	greg	1.10	/* option city */
139	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
140	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
141			!strcmp(argv[i], "-help")) {
142	greg	1.1	printdefaults();
143			quit(0);
144			}
145			#if RVIEW
146			if (!strcmp(argv[i], "-devices")) {
147			printdevices();
148			quit(0);
149			}
150			#endif
151	greg	1.21	#if RPICT\|RVIEW
152			rval = getviewopt(&ourview, argc-i, argv+i);
153			if (rval >= 0) {
154			i += rval;
155			continue;
156			}
157			#endif
158	greg	1.1	switch (argv[i][1]) {
159			#if RPICT\|RVIEW
160	greg	1.21	case 'v': /* view file */
161			if (argv[i][2] != 'f')
162	greg	1.10	goto badopt;
163	greg	1.21	check(3,1);
164	greg	1.25	rval = viewfile(argv[++i], &ourview, 0, 0);
165	greg	1.21	if (rval < 0) {
166			sprintf(errmsg,
167			"cannot open view file \"%s\"",
168			argv[i]);
169			error(SYSTEM, errmsg);
170			} else if (rval == 0) {
171			sprintf(errmsg,
172			"bad view file \"%s\"",
173			argv[i]);
174			error(USER, errmsg);
175			} else
176			gotvfile += rval;
177	greg	1.1	break;
178			#endif
179	greg	1.11	case 'd': /* direct */
180	greg	1.1	switch (argv[i][2]) {
181	greg	1.13	case 't': /* threshold */
182	greg	1.10	check(3,1);
183	greg	1.11	shadthresh = atof(argv[++i]);
184	greg	1.1	break;
185	greg	1.15	case 'c': /* certainty */
186			check(3,1);
187			shadcert = atof(argv[++i]);
188			break;
189	greg	1.11	case 'j': /* jitter */
190	greg	1.10	check(3,1);
191	greg	1.1	dstrsrc = atof(argv[++i]);
192			break;
193	greg	1.39	case 'r':
194			check(3,1);
195			directrelay = atoi(argv[++i]);
196			break;
197	greg	1.40	case 'p':
198			check(3,1);
199			vspretest = atoi(argv[++i]);
200	greg	1.42	break;
201			case 'i':
202	greg	1.43	bool(3,directinvis);
203	greg	1.40	break;
204	greg	1.1	default:
205	greg	1.10	goto badopt;
206	greg	1.1	}
207			break;
208			#if RPICT\|RVIEW
209			case 's': /* sample */
210			switch (argv[i][2]) {
211			case 'p': /* pixel */
212	greg	1.10	check(3,1);
213	greg	1.1	psample = atoi(argv[++i]);
214			break;
215	greg	1.13	case 't': /* threshold */
216	greg	1.10	check(3,1);
217	greg	1.1	maxdiff = atof(argv[++i]);
218			break;
219	greg	1.11	#if RPICT
220			case 'j': /* jitter */
221			check(3,1);
222			dstrpix = atof(argv[++i]);
223			break;
224			#endif
225	greg	1.1	default:
226	greg	1.10	goto badopt;
227	greg	1.1	}
228			break;
229			#endif
230	greg	1.22	#if RPICT\|RTRACE
231	greg	1.1	case 'x': /* x resolution */
232	greg	1.10	check(2,1);
233	greg	1.1	hresolu = atoi(argv[++i]);
234			break;
235			case 'y': /* y resolution */
236	greg	1.10	check(2,1);
237	greg	1.1	vresolu = atoi(argv[++i]);
238			break;
239	greg	1.22	#endif
240			#if RPICT
241			case 'p': /* pixel aspect */
242	greg	1.23	check(2,1);
243	greg	1.22	pixaspect = atof(argv[++i]);
244			break;
245			#endif
246	greg	1.1	case 'w': /* warnings */
247	greg	1.43	rval = wrnvec != NULL;
248			bool(2,rval);
249			wrnvec = rval ? stderr_v : NULL;
250	greg	1.1	break;
251			case 'e': /* error file */
252	greg	1.10	check(2,1);
253	greg	1.1	errfile = argv[++i];
254			break;
255			case 'l': /* limit */
256			switch (argv[i][2]) {
257			case 'r': /* recursion */
258	greg	1.10	check(3,1);
259	greg	1.1	maxdepth = atoi(argv[++i]);
260			break;
261			case 'w': /* weight */
262	greg	1.10	check(3,1);
263	greg	1.1	minweight = atof(argv[++i]);
264			break;
265			default:
266	greg	1.10	goto badopt;
267	greg	1.1	}
268			break;
269	greg	1.36	case 'i': /* irradiance */
270	greg	1.43	bool(2,do_irrad);
271	greg	1.36	break;
272	greg	1.1	#if RPICT
273	greg	1.20	case 'z': /* z file */
274			check(2,1);
275			zfile = argv[++i];
276			break;
277	greg	1.1	case 'r': /* recover file */
278	greg	1.10	check(2,1);
279	greg	1.1	recover = argv[++i];
280	greg	1.25	rval = viewfile(recover, &ourview, &hresolu, &vresolu);
281	greg	1.5	if (rval <= 0) {
282			sprintf(errmsg,
283			"cannot recover view parameters from \"%s\"", recover);
284			error(WARNING, errmsg);
285	greg	1.25	} else {
286	greg	1.4	gotvfile += rval;
287	greg	1.25	pixaspect = 0.0;
288			}
289	greg	1.1	break;
290			case 't': /* timer */
291	greg	1.10	check(2,1);
292	greg	1.1	ralrm = atoi(argv[++i]);
293			break;
294			#endif
295			case 'a': /* ambient */
296			switch (argv[i][2]) {
297			case 'v': /* value */
298	greg	1.10	check(3,3);
299	greg	1.1	setcolor(ambval, atof(argv[i+1]),
300			atof(argv[i+2]),
301			atof(argv[i+3]));
302			i += 3;
303			break;
304			case 'a': /* accuracy */
305	greg	1.10	check(3,1);
306	greg	1.1	ambacc = atof(argv[++i]);
307			break;
308			case 'r': /* resolution */
309	greg	1.10	check(3,1);
310	greg	1.1	ambres = atoi(argv[++i]);
311			break;
312			case 'd': /* divisions */
313	greg	1.10	check(3,1);
314	greg	1.1	ambdiv = atoi(argv[++i]);
315			break;
316			case 's': /* super-samp */
317	greg	1.10	check(3,1);
318	greg	1.1	ambssamp = atoi(argv[++i]);
319			break;
320			case 'b': /* bounces */
321	greg	1.10	check(3,1);
322	greg	1.1	ambounce = atoi(argv[++i]);
323			break;
324			case 'i': /* include */
325	greg	1.10	check(3,1);
326	greg	1.1	if (ambincl != 1) {
327			ambincl = 1;
328			amblp = amblist;
329			}
330			*amblp++ = argv[++i];
331			break;
332			case 'e': /* exclude */
333	greg	1.10	check(3,1);
334	greg	1.1	if (ambincl != 0) {
335			ambincl = 0;
336			amblp = amblist;
337			}
338			*amblp++ = argv[++i];
339			break;
340			case 'f': /* file */
341	greg	1.10	check(3,1);
342	greg	1.1	ambfile= argv[++i];
343			break;
344			default:
345	greg	1.10	goto badopt;
346	greg	1.1	}
347			break;
348			#if RTRACE
349	greg	1.36	case 'I': /* immed. irradiance */
350	greg	1.43	bool(2,imm_irrad);
351	greg	1.36	break;
352	greg	1.1	case 'f': /* format i/o */
353			switch (argv[i][2]) {
354			case 'a': /* ascii */
355			case 'f': /* float */
356			case 'd': /* double */
357			inform = argv[i][2];
358			break;
359			default:
360	greg	1.10	goto badopt;
361	greg	1.1	}
362			switch (argv[i][3]) {
363			case '\0':
364			outform = inform;
365			break;
366			case 'a': /* ascii */
367			case 'f': /* float */
368			case 'd': /* double */
369	greg	1.12	check(4,0);
370	greg	1.1	outform = argv[i][3];
371			break;
372			default:
373	greg	1.10	goto badopt;
374	greg	1.1	}
375			break;
376			case 'o': /* output */
377			outvals = argv[i]+2;
378			break;
379	greg	1.44	case 'h': /* header output */
380			rval = loadflags & IO_INFO;
381			bool(2,rval);
382			loadflags = rval ? loadflags \| IO_INFO :
383			loadflags & ~IO_INFO;
384	greg	1.1	break;
385			#endif
386			#if RVIEW
387			case 'b': /* black and white */
388	greg	1.10	check(2,0);
389	greg	1.1	greyscale = !greyscale;
390			break;
391			case 'o': /* output device */
392	greg	1.10	check(2,1);
393	greg	1.1	devname = argv[++i];
394			break;
395			#endif
396			default:
397	greg	1.19	goto badopt;
398	greg	1.1	}
399			}
400	greg	1.24	*amblp = NULL;
401	greg	1.1	#if RPICT\|RVIEW
402			err = setview(&ourview); /* set viewing parameters */
403			if (err != NULL)
404			error(USER, err);
405			#endif
406	greg	1.22	#if RPICT
407	greg	1.23	normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
408	greg	1.22	#endif
409	greg	1.1	/* set up signal handling */
410			sigdie(SIGINT, "Interrupt");
411			sigdie(SIGHUP, "Hangup");
412			sigdie(SIGTERM, "Terminate");
413			sigdie(SIGPIPE, "Broken pipe");
414	greg	1.45	sigdie(SIGALRM, "Alarm clock");
415	greg	1.1	#ifdef SIGXCPU
416			sigdie(SIGXCPU, "CPU limit exceeded");
417			sigdie(SIGXFSZ, "File size exceeded");
418			#endif
419			/* open error file */
420			if (errfile != NULL) {
421			if (freopen(errfile, "a", stderr) == NULL)
422	greg	1.14	quit(2);
423	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
424			getpid());
425			printargs(argc, argv, stderr);
426			fputs("\n", stderr);
427			fflush(stderr);
428			}
429			#ifdef NICE
430			nice(NICE); /* lower priority */
431			#endif
432	greg	1.19	/* get octree */
433	greg	1.1	#if RVIEW
434			loadflags &= ~IO_INFO;
435			#endif
436			if (i == argc)
437	greg	1.19	octname = NULL;
438			else if (i == argc-1)
439			octname = argv[i];
440	greg	1.1	else
441	greg	1.19	goto badopt;
442			#if RVIEW\|RTRACE
443			if (octname == NULL)
444			error(USER, "missing octree argument");
445	greg	1.1	#endif
446	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
447	greg	1.1
448			if (loadflags & IO_INFO) { /* print header */
449			printargs(i, argv, stdout);
450			#if RPICT
451			if (gotvfile) {
452			printf(VIEWSTR);
453			fprintview(&ourview, stdout);
454			printf("\n");
455			}
456	greg	1.23	if (pixaspect < .99 \|\| pixaspect > 1.01)
457	greg	1.22	fputaspect(pixaspect, stdout);
458	greg	1.35	fputformat(COLRFMT, stdout);
459			#endif
460			#if RTRACE
461			fputformat( outform=='a' ? "ascii" :
462			outform=='f' ? "float" :
463			"double", stdout );
464	greg	1.1	#endif
465			printf("\n");
466			}
467
468			marksources(); /* find and mark sources */
469
470	greg	1.24	setambient(ambfile); /* initialize ambient calculation */
471	greg	1.1
472			#if RPICT
473	greg	1.20	render(zfile, recover); /* render the scene */
474	greg	1.1	#endif
475			#if RTRACE
476			rtrace(NULL); /* trace rays from stdin */
477			#endif
478			#if RVIEW
479			rview(); /* go */
480			#endif
481			quit(0);
482	greg	1.19
483			badopt:
484			sprintf(errmsg, "command line error at '%s'", argv[i]);
485			error(USER, errmsg);
486
487	greg	1.10	#undef check
488	greg	1.43	#undef bool
489	greg	1.1	}
490
491
492			eputs(s) /* error output */
493			char *s;
494			{
495			if (errvec != NULL)
496			(*errvec)(s);
497			}
498
499
500			wputs(s) /* warning output */
501			char *s;
502			{
503			if (wrnvec != NULL)
504			(*wrnvec)(s);
505			}
506
507
508			cputs(s) /* command error output */
509			char *s;
510			{
511			if (cmdvec != NULL)
512			(*cmdvec)(s);
513			}
514
515
516			stderr_v(s) /* put string to stderr */
517			register char *s;
518			{
519	greg	1.26	static int midline = 0;
520	greg	1.1
521	greg	1.27	if (!*s)
522			return;
523	greg	1.26	if (!midline++) {
524	greg	1.1	fputs(progname, stderr);
525			fputs(": ", stderr);
526			}
527			fputs(s, stderr);
528	greg	1.27	if (s[strlen(s)-1] == '\n') {
529	greg	1.1	fflush(stderr);
530	greg	1.26	midline = 0;
531	greg	1.1	}
532			}
533
534
535			onsig(signo) /* fatal signal */
536			int signo;
537			{
538	greg	1.8	static int gotsig = 0;
539
540			if (gotsig++) /* two signals and we're gone! */
541	greg	1.9	_exit(signo);
542	greg	1.8
543	greg	1.1	eputs("signal - ");
544			eputs(sigerr[signo]);
545			eputs("\n");
546	greg	1.14	quit(3);
547	greg	1.1	}
548
549
550			sigdie(signo, msg) /* set fatal signal */
551			int signo;
552			char *msg;
553			{
554			if (signal(signo, onsig) == SIG_IGN)
555			signal(signo, SIG_IGN);
556			sigerr[signo] = msg;
557			}
558
559
560			printdefaults() /* print default values to stdout */
561			{
562			register char *cp;
563
564	greg	1.43	#if RTRACE
565			if (imm_irrad)
566			printf("-I+\t\t\t\t# immediate irradiance on\n");
567			else
568			#endif
569			printf(do_irrad ? "-i+\t\t\t\t# irradiance calculation on\n" :
570			"-i-\t\t\t\t# irradiance calculation off\n");
571	greg	1.1	#if RPICT\|RVIEW
572	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
573	greg	1.1	ourview.type==VT_PER ? "perspective" :
574			ourview.type==VT_PAR ? "parallel" :
575	greg	1.28	ourview.type==VT_HEM ? "hemispherical" :
576			ourview.type==VT_ANG ? "angular" :
577	greg	1.1	"unknown");
578			printf("-vp %f %f %f\t# view point\n",
579			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
580			printf("-vd %f %f %f\t# view direction\n",
581			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
582			printf("-vu %f %f %f\t# view up\n",
583			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
584			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
585			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
586	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
587			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
588	greg	1.1	#endif
589	greg	1.22	#if RPICT\|RTRACE
590	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
591			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
592	greg	1.22	#endif
593			#if RPICT
594	greg	1.23	printf("-p %f\t\t\t# pixel aspect ratio\n", pixaspect);
595	greg	1.22	#endif
596	greg	1.1	#if RPICT\|RVIEW
597			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
598	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
599	greg	1.22	#endif
600	greg	1.11	#if RPICT
601			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
602	greg	1.1	#endif
603	greg	1.29	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
604			printf("-dc %f\t\t\t# direct certainty\n", shadcert);
605			printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
606	greg	1.39	printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
607	greg	1.40	printf("-dp %-9d\t\t\t# direct pretest density\n", vspretest);
608	greg	1.43	printf(directinvis ? "-di+\t\t\t\t# direct invisibility on\n" :
609			"-di-\t\t\t\t# direct invisibility off\n");
610	greg	1.1	printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
611			colval(ambval,GRN), colval(ambval, BLU));
612			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
613			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
614			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
615			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
616			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
617			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
618			printf("-lw %f\t\t\t# limit weight\n", minweight);
619			#if RPICT
620			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
621			#endif
622			#if RVIEW
623			printf("-o %s\t\t\t\t# output device\n", devname);
624			#endif
625			#if RTRACE
626			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
627			inform, outform,
628			inform=='a' ? "ascii" :
629			inform=='f' ? "float" : "double",
630			outform=='a' ? "ascii" :
631			outform=='f' ? "float" : "double");
632			printf("-o%s\t\t\t\t# output", outvals);
633			for (cp = outvals; *cp; cp++)
634			switch (*cp) {
635			case 't': printf(" trace"); break;
636			case 'o': printf(" origin"); break;
637			case 'd': printf(" direction"); break;
638			case 'v': printf(" value"); break;
639			case 'l': printf(" length"); break;
640			case 'p': printf(" point"); break;
641			case 'n': printf(" normal"); break;
642			case 's': printf(" surface"); break;
643			case 'w': printf(" weight"); break;
644			case 'm': printf(" modifier"); break;
645			}
646			printf("\n");
647			#endif
648	greg	1.43	printf(wrnvec != NULL ? "-w+\t\t\t\t# warning messages on\n" :
649			"-w-\t\t\t\t# warning messages off\n");
650	greg	1.1	}