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 float  pctdone;                  /* percentage done */

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  maxdepth;                   /* maximum recursion depth */
extern double  minweight;               /* minimum ray weight */
extern long  nrays;                     /* number of rays traced */

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
        double  atof();
        char  *getenv();
        int  report();
        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(512);
                                        /* 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;
                        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 */
                        check(2,0);
                        if (wrnvec == NULL)
                                wrnvec = stderr_v;
                        else
                                wrnvec = 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 */
                        do_irrad = !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 */
                        imm_irrad = !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':                               /* toggle header */
                        check(2,0);
                        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");
#ifdef  SIGXCPU
        sigdie(SIGXCPU, "CPU limit exceeded");
        sigdie(SIGXFSZ, "File size exceeded");
#endif
#if  RPICT
        signal(SIGALRM, report);
#else
        sigdie(SIGALRM, "Alarm clock");
#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
}


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  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("-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
}
Revision:	1.39
Committed:	Wed Jun 19 16:36:41 1991 UTC (33 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.38:	+6 -0 lines
Log Message:	added virtual sources
#	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			extern float pctdone; /* percentage done */
67
68			extern int greyscale; /* map colors to brightness? */
69			extern char devname; / output device name */
70
71			extern int inform; /* input format */
72			extern int outform; /* output format */
73			extern char outvals; / output values */
74
75			extern VIEW ourview; /* viewing parameters */
76
77			extern int hresolu; /* horizontal resolution */
78			extern int vresolu; /* vertical resolution */
79	greg	1.22	extern double pixaspect; /* pixel aspect ratio */
80	greg	1.1
81			extern int psample; /* pixel sample size */
82			extern double maxdiff; /* max. sample difference */
83	greg	1.11	extern double dstrpix; /* square pixel distribution */
84	greg	1.1
85			extern double dstrsrc; /* square source distribution */
86	greg	1.11	extern double shadthresh; /* shadow threshold */
87	greg	1.15	extern double shadcert; /* shadow testing certainty */
88	greg	1.39	extern int directrelay; /* number of source relays */
89	greg	1.1
90			extern int maxdepth; /* maximum recursion depth */
91			extern double minweight; /* minimum ray weight */
92			extern long nrays; /* number of rays traced */
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	1.1	double atof();
110			char *getenv();
111			int report();
112			char *err;
113			char *recover = NULL;
114	greg	1.20	char *zfile = NULL;
115	greg	1.1	char *errfile = NULL;
116			char *ambfile = NULL;
117			char **amblp = amblist;
118			int loadflags = ~IO_FILES;
119	greg	1.4	int rval, gotvfile = 0;
120	greg	1.1	int i;
121	greg	1.34	/* record start time */
122			tstart = time((long *)0);
123	greg	1.1	/* global program name */
124			progname = argv[0];
125			/* get library path */
126			if ((libpath = getenv(ULIBVAR)) == NULL)
127			libpath = DEFPATH;
128	greg	1.31	/* initialize object types */
129			initotypes();
130	greg	1.37	/* initialize urand */
131			initurand(512);
132	greg	1.10	/* option city */
133	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
134	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
135			!strcmp(argv[i], "-help")) {
136	greg	1.1	printdefaults();
137			quit(0);
138			}
139			#if RVIEW
140			if (!strcmp(argv[i], "-devices")) {
141			printdevices();
142			quit(0);
143			}
144			#endif
145	greg	1.21	#if RPICT\|RVIEW
146			rval = getviewopt(&ourview, argc-i, argv+i);
147			if (rval >= 0) {
148			i += rval;
149			continue;
150			}
151			#endif
152	greg	1.1	switch (argv[i][1]) {
153			#if RPICT\|RVIEW
154	greg	1.21	case 'v': /* view file */
155			if (argv[i][2] != 'f')
156	greg	1.10	goto badopt;
157	greg	1.21	check(3,1);
158	greg	1.25	rval = viewfile(argv[++i], &ourview, 0, 0);
159	greg	1.21	if (rval < 0) {
160			sprintf(errmsg,
161			"cannot open view file \"%s\"",
162			argv[i]);
163			error(SYSTEM, errmsg);
164			} else if (rval == 0) {
165			sprintf(errmsg,
166			"bad view file \"%s\"",
167			argv[i]);
168			error(USER, errmsg);
169			} else
170			gotvfile += rval;
171	greg	1.1	break;
172			#endif
173	greg	1.11	case 'd': /* direct */
174	greg	1.1	switch (argv[i][2]) {
175	greg	1.13	case 't': /* threshold */
176	greg	1.10	check(3,1);
177	greg	1.11	shadthresh = atof(argv[++i]);
178	greg	1.1	break;
179	greg	1.15	case 'c': /* certainty */
180			check(3,1);
181			shadcert = atof(argv[++i]);
182			break;
183	greg	1.11	case 'j': /* jitter */
184	greg	1.10	check(3,1);
185	greg	1.1	dstrsrc = atof(argv[++i]);
186			break;
187	greg	1.39	case 'r':
188			check(3,1);
189			directrelay = atoi(argv[++i]);
190			break;
191	greg	1.1	default:
192	greg	1.10	goto badopt;
193	greg	1.1	}
194			break;
195			#if RPICT\|RVIEW
196			case 's': /* sample */
197			switch (argv[i][2]) {
198			case 'p': /* pixel */
199	greg	1.10	check(3,1);
200	greg	1.1	psample = atoi(argv[++i]);
201			break;
202	greg	1.13	case 't': /* threshold */
203	greg	1.10	check(3,1);
204	greg	1.1	maxdiff = atof(argv[++i]);
205			break;
206	greg	1.11	#if RPICT
207			case 'j': /* jitter */
208			check(3,1);
209			dstrpix = atof(argv[++i]);
210			break;
211			#endif
212	greg	1.1	default:
213	greg	1.10	goto badopt;
214	greg	1.1	}
215			break;
216			#endif
217	greg	1.22	#if RPICT\|RTRACE
218	greg	1.1	case 'x': /* x resolution */
219	greg	1.10	check(2,1);
220	greg	1.1	hresolu = atoi(argv[++i]);
221			break;
222			case 'y': /* y resolution */
223	greg	1.10	check(2,1);
224	greg	1.1	vresolu = atoi(argv[++i]);
225			break;
226	greg	1.22	#endif
227			#if RPICT
228			case 'p': /* pixel aspect */
229	greg	1.23	check(2,1);
230	greg	1.22	pixaspect = atof(argv[++i]);
231			break;
232			#endif
233	greg	1.1	case 'w': /* warnings */
234	greg	1.10	check(2,0);
235	greg	1.32	if (wrnvec == NULL)
236			wrnvec = stderr_v;
237			else
238			wrnvec = NULL;
239	greg	1.1	break;
240			case 'e': /* error file */
241	greg	1.10	check(2,1);
242	greg	1.1	errfile = argv[++i];
243			break;
244			case 'l': /* limit */
245			switch (argv[i][2]) {
246			case 'r': /* recursion */
247	greg	1.10	check(3,1);
248	greg	1.1	maxdepth = atoi(argv[++i]);
249			break;
250			case 'w': /* weight */
251	greg	1.10	check(3,1);
252	greg	1.1	minweight = atof(argv[++i]);
253			break;
254			default:
255	greg	1.10	goto badopt;
256	greg	1.1	}
257			break;
258	greg	1.36	case 'i': /* irradiance */
259			do_irrad = !do_irrad;
260			break;
261	greg	1.1	#if RPICT
262	greg	1.20	case 'z': /* z file */
263			check(2,1);
264			zfile = argv[++i];
265			break;
266	greg	1.1	case 'r': /* recover file */
267	greg	1.10	check(2,1);
268	greg	1.1	recover = argv[++i];
269	greg	1.25	rval = viewfile(recover, &ourview, &hresolu, &vresolu);
270	greg	1.5	if (rval <= 0) {
271			sprintf(errmsg,
272			"cannot recover view parameters from \"%s\"", recover);
273			error(WARNING, errmsg);
274	greg	1.25	} else {
275	greg	1.4	gotvfile += rval;
276	greg	1.25	pixaspect = 0.0;
277			}
278	greg	1.1	break;
279			case 't': /* timer */
280	greg	1.10	check(2,1);
281	greg	1.1	ralrm = atoi(argv[++i]);
282			break;
283			#endif
284			case 'a': /* ambient */
285			switch (argv[i][2]) {
286			case 'v': /* value */
287	greg	1.10	check(3,3);
288	greg	1.1	setcolor(ambval, atof(argv[i+1]),
289			atof(argv[i+2]),
290			atof(argv[i+3]));
291			i += 3;
292			break;
293			case 'a': /* accuracy */
294	greg	1.10	check(3,1);
295	greg	1.1	ambacc = atof(argv[++i]);
296			break;
297			case 'r': /* resolution */
298	greg	1.10	check(3,1);
299	greg	1.1	ambres = atoi(argv[++i]);
300			break;
301			case 'd': /* divisions */
302	greg	1.10	check(3,1);
303	greg	1.1	ambdiv = atoi(argv[++i]);
304			break;
305			case 's': /* super-samp */
306	greg	1.10	check(3,1);
307	greg	1.1	ambssamp = atoi(argv[++i]);
308			break;
309			case 'b': /* bounces */
310	greg	1.10	check(3,1);
311	greg	1.1	ambounce = atoi(argv[++i]);
312			break;
313			case 'i': /* include */
314	greg	1.10	check(3,1);
315	greg	1.1	if (ambincl != 1) {
316			ambincl = 1;
317			amblp = amblist;
318			}
319			*amblp++ = argv[++i];
320			break;
321			case 'e': /* exclude */
322	greg	1.10	check(3,1);
323	greg	1.1	if (ambincl != 0) {
324			ambincl = 0;
325			amblp = amblist;
326			}
327			*amblp++ = argv[++i];
328			break;
329			case 'f': /* file */
330	greg	1.10	check(3,1);
331	greg	1.1	ambfile= argv[++i];
332			break;
333			default:
334	greg	1.10	goto badopt;
335	greg	1.1	}
336			break;
337			#if RTRACE
338	greg	1.36	case 'I': /* immed. irradiance */
339			imm_irrad = !imm_irrad;
340			break;
341	greg	1.1	case 'f': /* format i/o */
342			switch (argv[i][2]) {
343			case 'a': /* ascii */
344			case 'f': /* float */
345			case 'd': /* double */
346			inform = argv[i][2];
347			break;
348			default:
349	greg	1.10	goto badopt;
350	greg	1.1	}
351			switch (argv[i][3]) {
352			case '\0':
353			outform = inform;
354			break;
355			case 'a': /* ascii */
356			case 'f': /* float */
357			case 'd': /* double */
358	greg	1.12	check(4,0);
359	greg	1.1	outform = argv[i][3];
360			break;
361			default:
362	greg	1.10	goto badopt;
363	greg	1.1	}
364			break;
365			case 'o': /* output */
366			outvals = argv[i]+2;
367			break;
368	greg	1.6	case 'h': /* toggle header */
369	greg	1.10	check(2,0);
370	greg	1.6	loadflags ^= IO_INFO;
371	greg	1.1	break;
372			#endif
373			#if RVIEW
374			case 'b': /* black and white */
375	greg	1.10	check(2,0);
376	greg	1.1	greyscale = !greyscale;
377			break;
378			case 'o': /* output device */
379	greg	1.10	check(2,1);
380	greg	1.1	devname = argv[++i];
381			break;
382			#endif
383			default:
384	greg	1.19	goto badopt;
385	greg	1.1	}
386			}
387	greg	1.24	*amblp = NULL;
388	greg	1.1	#if RPICT\|RVIEW
389			err = setview(&ourview); /* set viewing parameters */
390			if (err != NULL)
391			error(USER, err);
392			#endif
393	greg	1.22	#if RPICT
394	greg	1.23	normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
395	greg	1.22	#endif
396	greg	1.1	/* set up signal handling */
397			sigdie(SIGINT, "Interrupt");
398			sigdie(SIGHUP, "Hangup");
399			sigdie(SIGTERM, "Terminate");
400			sigdie(SIGPIPE, "Broken pipe");
401			#ifdef SIGXCPU
402			sigdie(SIGXCPU, "CPU limit exceeded");
403			sigdie(SIGXFSZ, "File size exceeded");
404			#endif
405			#if RPICT
406			signal(SIGALRM, report);
407			#else
408			sigdie(SIGALRM, "Alarm clock");
409			#endif
410			/* open error file */
411			if (errfile != NULL) {
412			if (freopen(errfile, "a", stderr) == NULL)
413	greg	1.14	quit(2);
414	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
415			getpid());
416			printargs(argc, argv, stderr);
417			fputs("\n", stderr);
418			fflush(stderr);
419			}
420			#ifdef NICE
421			nice(NICE); /* lower priority */
422			#endif
423	greg	1.19	/* get octree */
424	greg	1.1	#if RVIEW
425			loadflags &= ~IO_INFO;
426			#endif
427			if (i == argc)
428	greg	1.19	octname = NULL;
429			else if (i == argc-1)
430			octname = argv[i];
431	greg	1.1	else
432	greg	1.19	goto badopt;
433			#if RVIEW\|RTRACE
434			if (octname == NULL)
435			error(USER, "missing octree argument");
436	greg	1.1	#endif
437	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
438	greg	1.1
439			if (loadflags & IO_INFO) { /* print header */
440			printargs(i, argv, stdout);
441			#if RPICT
442			if (gotvfile) {
443			printf(VIEWSTR);
444			fprintview(&ourview, stdout);
445			printf("\n");
446			}
447	greg	1.23	if (pixaspect < .99 \|\| pixaspect > 1.01)
448	greg	1.22	fputaspect(pixaspect, stdout);
449	greg	1.35	fputformat(COLRFMT, stdout);
450			#endif
451			#if RTRACE
452			fputformat( outform=='a' ? "ascii" :
453			outform=='f' ? "float" :
454			"double", stdout );
455	greg	1.1	#endif
456			printf("\n");
457			}
458
459			marksources(); /* find and mark sources */
460
461	greg	1.24	setambient(ambfile); /* initialize ambient calculation */
462	greg	1.1
463			#if RPICT
464	greg	1.20	render(zfile, recover); /* render the scene */
465	greg	1.1	#endif
466			#if RTRACE
467			rtrace(NULL); /* trace rays from stdin */
468			#endif
469			#if RVIEW
470			rview(); /* go */
471			#endif
472			quit(0);
473	greg	1.19
474			badopt:
475			sprintf(errmsg, "command line error at '%s'", argv[i]);
476			error(USER, errmsg);
477
478	greg	1.10	#undef check
479	greg	1.1	}
480
481
482			eputs(s) /* error output */
483			char *s;
484			{
485			if (errvec != NULL)
486			(*errvec)(s);
487			}
488
489
490			wputs(s) /* warning output */
491			char *s;
492			{
493			if (wrnvec != NULL)
494			(*wrnvec)(s);
495			}
496
497
498			cputs(s) /* command error output */
499			char *s;
500			{
501			if (cmdvec != NULL)
502			(*cmdvec)(s);
503			}
504
505
506			stderr_v(s) /* put string to stderr */
507			register char *s;
508			{
509	greg	1.26	static int midline = 0;
510	greg	1.1
511	greg	1.27	if (!*s)
512			return;
513	greg	1.26	if (!midline++) {
514	greg	1.1	fputs(progname, stderr);
515			fputs(": ", stderr);
516			}
517			fputs(s, stderr);
518	greg	1.27	if (s[strlen(s)-1] == '\n') {
519	greg	1.1	fflush(stderr);
520	greg	1.26	midline = 0;
521	greg	1.1	}
522			}
523
524
525			onsig(signo) /* fatal signal */
526			int signo;
527			{
528	greg	1.8	static int gotsig = 0;
529
530			if (gotsig++) /* two signals and we're gone! */
531	greg	1.9	_exit(signo);
532	greg	1.8
533	greg	1.1	eputs("signal - ");
534			eputs(sigerr[signo]);
535			eputs("\n");
536	greg	1.14	quit(3);
537	greg	1.1	}
538
539
540			sigdie(signo, msg) /* set fatal signal */
541			int signo;
542			char *msg;
543			{
544			if (signal(signo, onsig) == SIG_IGN)
545			signal(signo, SIG_IGN);
546			sigerr[signo] = msg;
547			}
548
549
550			printdefaults() /* print default values to stdout */
551			{
552			register char *cp;
553
554			#if RPICT\|RVIEW
555	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
556	greg	1.1	ourview.type==VT_PER ? "perspective" :
557			ourview.type==VT_PAR ? "parallel" :
558	greg	1.28	ourview.type==VT_HEM ? "hemispherical" :
559			ourview.type==VT_ANG ? "angular" :
560	greg	1.1	"unknown");
561			printf("-vp %f %f %f\t# view point\n",
562			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
563			printf("-vd %f %f %f\t# view direction\n",
564			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
565			printf("-vu %f %f %f\t# view up\n",
566			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
567			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
568			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
569	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
570			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
571	greg	1.1	#endif
572	greg	1.22	#if RPICT\|RTRACE
573	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
574			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
575	greg	1.22	#endif
576			#if RPICT
577	greg	1.23	printf("-p %f\t\t\t# pixel aspect ratio\n", pixaspect);
578	greg	1.22	#endif
579	greg	1.1	#if RPICT\|RVIEW
580			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
581	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
582	greg	1.22	#endif
583	greg	1.11	#if RPICT
584			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
585	greg	1.1	#endif
586	greg	1.29	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
587			printf("-dc %f\t\t\t# direct certainty\n", shadcert);
588			printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
589	greg	1.39	printf("-dr %-9d\t\t\t# direct relays\n", directrelay);
590	greg	1.1	printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
591			colval(ambval,GRN), colval(ambval, BLU));
592			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
593			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
594			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
595			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
596			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
597			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
598			printf("-lw %f\t\t\t# limit weight\n", minweight);
599			#if RPICT
600			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
601			#endif
602			#if RVIEW
603			printf("-o %s\t\t\t\t# output device\n", devname);
604			#endif
605			#if RTRACE
606			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
607			inform, outform,
608			inform=='a' ? "ascii" :
609			inform=='f' ? "float" : "double",
610			outform=='a' ? "ascii" :
611			outform=='f' ? "float" : "double");
612			printf("-o%s\t\t\t\t# output", outvals);
613			for (cp = outvals; *cp; cp++)
614			switch (*cp) {
615			case 't': printf(" trace"); break;
616			case 'o': printf(" origin"); break;
617			case 'd': printf(" direction"); break;
618			case 'v': printf(" value"); break;
619			case 'l': printf(" length"); break;
620			case 'p': printf(" point"); break;
621			case 'n': printf(" normal"); break;
622			case 's': printf(" surface"); break;
623			case 'w': printf(" weight"); break;
624			case 'm': printf(" modifier"); break;
625			}
626			printf("\n");
627			#endif
628			}