src/rt/rmain.c

/* Copyright (c) 1986 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 */

CUBE  thescene;                         /* our scene */

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  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;
                                        /* global program name */
        progname = argv[0];
                                        /* get library path */
        if ((libpath = getenv(ULIBVAR)) == NULL)
                libpath = DEFPATH;
                                        /* 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);
                        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;
                        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);
                        wrnvec = wrnvec==NULL ? 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;
#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);
                        if (rval <= 0) {
                                sprintf(errmsg,
                        "cannot recover view parameters from \"%s\"", recover);
                                error(WARNING, errmsg);
                        } else
                                gotvfile += rval;
                        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 '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;
                }
        }
#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);
#endif
                printf("\n");
        }

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

        *amblp = NULL;                  /* initialize ambient calculation */
        setambient(ambfile);

#if  RPICT
        if (ralrm > 0)                  /* report init time */
                report();
        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  inline = 0;

        if (!inline++) {
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        if (*s && s[strlen(s)-1] == '\n') {
                fflush(stderr);
                inline = 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" :
                        "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
        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);
#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("-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 'i': printf(" irradiance"); break;
                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:	1.23
Committed:	Thu Jan 11 10:09:22 1990 UTC (35 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.22:	+4 -6 lines
Log Message:	changed interface to normaspect()
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1986 Regents of the University of California */
2
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
54			CUBE thescene; /* our scene */
55
56			extern int ralrm; /* seconds between reports */
57			extern float pctdone; /* percentage done */
58
59			extern int greyscale; /* map colors to brightness? */
60			extern char devname; / output device name */
61
62			extern int inform; /* input format */
63			extern int outform; /* output format */
64			extern char outvals; / output values */
65
66			extern VIEW ourview; /* viewing parameters */
67
68			extern int hresolu; /* horizontal resolution */
69			extern int vresolu; /* vertical resolution */
70	greg	1.22	extern double pixaspect; /* pixel aspect ratio */
71	greg	1.1
72			extern int psample; /* pixel sample size */
73			extern double maxdiff; /* max. sample difference */
74	greg	1.11	extern double dstrpix; /* square pixel distribution */
75	greg	1.1
76			extern double dstrsrc; /* square source distribution */
77	greg	1.11	extern double shadthresh; /* shadow threshold */
78	greg	1.15	extern double shadcert; /* shadow testing certainty */
79	greg	1.1
80			extern int maxdepth; /* maximum recursion depth */
81			extern double minweight; /* minimum ray weight */
82			extern long nrays; /* number of rays traced */
83
84			extern COLOR ambval; /* ambient value */
85			extern double ambacc; /* ambient accuracy */
86			extern int ambres; /* ambient resolution */
87			extern int ambdiv; /* ambient divisions */
88			extern int ambssamp; /* ambient super-samples */
89			extern int ambounce; /* ambient bounces */
90			extern char amblist[]; / ambient include/exclude list */
91			extern int ambincl; /* include == 1, exclude == 0 */
92
93
94			main(argc, argv)
95			int argc;
96			char *argv[];
97			{
98	greg	1.16	#define check(olen,narg) if (argv[i][olen] \|\| narg >= argc-i) goto badopt
99	greg	1.1	double atof();
100			char *getenv();
101			int report();
102			char *err;
103			char *recover = NULL;
104	greg	1.20	char *zfile = NULL;
105	greg	1.1	char *errfile = NULL;
106			char *ambfile = NULL;
107			char **amblp = amblist;
108			int loadflags = ~IO_FILES;
109	greg	1.4	int rval, gotvfile = 0;
110	greg	1.1	int i;
111			/* global program name */
112			progname = argv[0];
113			/* get library path */
114			if ((libpath = getenv(ULIBVAR)) == NULL)
115			libpath = DEFPATH;
116	greg	1.10	/* option city */
117	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
118	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
119			!strcmp(argv[i], "-help")) {
120	greg	1.1	printdefaults();
121			quit(0);
122			}
123			#if RVIEW
124			if (!strcmp(argv[i], "-devices")) {
125			printdevices();
126			quit(0);
127			}
128			#endif
129	greg	1.21	#if RPICT\|RVIEW
130			rval = getviewopt(&ourview, argc-i, argv+i);
131			if (rval >= 0) {
132			i += rval;
133			continue;
134			}
135			#endif
136	greg	1.1	switch (argv[i][1]) {
137			#if RPICT\|RVIEW
138	greg	1.21	case 'v': /* view file */
139			if (argv[i][2] != 'f')
140	greg	1.10	goto badopt;
141	greg	1.21	check(3,1);
142			rval = viewfile(argv[++i], &ourview);
143			if (rval < 0) {
144			sprintf(errmsg,
145			"cannot open view file \"%s\"",
146			argv[i]);
147			error(SYSTEM, errmsg);
148			} else if (rval == 0) {
149			sprintf(errmsg,
150			"bad view file \"%s\"",
151			argv[i]);
152			error(USER, errmsg);
153			} else
154			gotvfile += rval;
155	greg	1.1	break;
156			#endif
157	greg	1.11	case 'd': /* direct */
158	greg	1.1	switch (argv[i][2]) {
159	greg	1.13	case 't': /* threshold */
160	greg	1.10	check(3,1);
161	greg	1.11	shadthresh = atof(argv[++i]);
162	greg	1.1	break;
163	greg	1.15	case 'c': /* certainty */
164			check(3,1);
165			shadcert = atof(argv[++i]);
166			break;
167	greg	1.11	case 'j': /* jitter */
168	greg	1.10	check(3,1);
169	greg	1.1	dstrsrc = atof(argv[++i]);
170			break;
171			default:
172	greg	1.10	goto badopt;
173	greg	1.1	}
174			break;
175			#if RPICT\|RVIEW
176			case 's': /* sample */
177			switch (argv[i][2]) {
178			case 'p': /* pixel */
179	greg	1.10	check(3,1);
180	greg	1.1	psample = atoi(argv[++i]);
181			break;
182	greg	1.13	case 't': /* threshold */
183	greg	1.10	check(3,1);
184	greg	1.1	maxdiff = atof(argv[++i]);
185			break;
186	greg	1.11	#if RPICT
187			case 'j': /* jitter */
188			check(3,1);
189			dstrpix = atof(argv[++i]);
190			break;
191			#endif
192	greg	1.1	default:
193	greg	1.10	goto badopt;
194	greg	1.1	}
195			break;
196			#endif
197	greg	1.22	#if RPICT\|RTRACE
198	greg	1.1	case 'x': /* x resolution */
199	greg	1.10	check(2,1);
200	greg	1.1	hresolu = atoi(argv[++i]);
201			break;
202			case 'y': /* y resolution */
203	greg	1.10	check(2,1);
204	greg	1.1	vresolu = atoi(argv[++i]);
205			break;
206	greg	1.22	#endif
207			#if RPICT
208			case 'p': /* pixel aspect */
209	greg	1.23	check(2,1);
210	greg	1.22	pixaspect = atof(argv[++i]);
211			break;
212			#endif
213	greg	1.1	case 'w': /* warnings */
214	greg	1.10	check(2,0);
215	greg	1.1	wrnvec = wrnvec==NULL ? stderr_v : NULL;
216			break;
217			case 'e': /* error file */
218	greg	1.10	check(2,1);
219	greg	1.1	errfile = argv[++i];
220			break;
221			case 'l': /* limit */
222			switch (argv[i][2]) {
223			case 'r': /* recursion */
224	greg	1.10	check(3,1);
225	greg	1.1	maxdepth = atoi(argv[++i]);
226			break;
227			case 'w': /* weight */
228	greg	1.10	check(3,1);
229	greg	1.1	minweight = atof(argv[++i]);
230			break;
231			default:
232	greg	1.10	goto badopt;
233	greg	1.1	}
234			break;
235			#if RPICT
236	greg	1.20	case 'z': /* z file */
237			check(2,1);
238			zfile = argv[++i];
239			break;
240	greg	1.1	case 'r': /* recover file */
241	greg	1.10	check(2,1);
242	greg	1.1	recover = argv[++i];
243	greg	1.4	rval = viewfile(recover, &ourview);
244	greg	1.5	if (rval <= 0) {
245			sprintf(errmsg,
246			"cannot recover view parameters from \"%s\"", recover);
247			error(WARNING, errmsg);
248			} else
249	greg	1.4	gotvfile += rval;
250	greg	1.1	break;
251			case 't': /* timer */
252	greg	1.10	check(2,1);
253	greg	1.1	ralrm = atoi(argv[++i]);
254			break;
255			#endif
256			case 'a': /* ambient */
257			switch (argv[i][2]) {
258			case 'v': /* value */
259	greg	1.10	check(3,3);
260	greg	1.1	setcolor(ambval, atof(argv[i+1]),
261			atof(argv[i+2]),
262			atof(argv[i+3]));
263			i += 3;
264			break;
265			case 'a': /* accuracy */
266	greg	1.10	check(3,1);
267	greg	1.1	ambacc = atof(argv[++i]);
268			break;
269			case 'r': /* resolution */
270	greg	1.10	check(3,1);
271	greg	1.1	ambres = atoi(argv[++i]);
272			break;
273			case 'd': /* divisions */
274	greg	1.10	check(3,1);
275	greg	1.1	ambdiv = atoi(argv[++i]);
276			break;
277			case 's': /* super-samp */
278	greg	1.10	check(3,1);
279	greg	1.1	ambssamp = atoi(argv[++i]);
280			break;
281			case 'b': /* bounces */
282	greg	1.10	check(3,1);
283	greg	1.1	ambounce = atoi(argv[++i]);
284			break;
285			case 'i': /* include */
286	greg	1.10	check(3,1);
287	greg	1.1	if (ambincl != 1) {
288			ambincl = 1;
289			amblp = amblist;
290			}
291			*amblp++ = argv[++i];
292			break;
293			case 'e': /* exclude */
294	greg	1.10	check(3,1);
295	greg	1.1	if (ambincl != 0) {
296			ambincl = 0;
297			amblp = amblist;
298			}
299			*amblp++ = argv[++i];
300			break;
301			case 'f': /* file */
302	greg	1.10	check(3,1);
303	greg	1.1	ambfile= argv[++i];
304			break;
305			default:
306	greg	1.10	goto badopt;
307	greg	1.1	}
308			break;
309			#if RTRACE
310			case 'f': /* format i/o */
311			switch (argv[i][2]) {
312			case 'a': /* ascii */
313			case 'f': /* float */
314			case 'd': /* double */
315			inform = argv[i][2];
316			break;
317			default:
318	greg	1.10	goto badopt;
319	greg	1.1	}
320			switch (argv[i][3]) {
321			case '\0':
322			outform = inform;
323			break;
324			case 'a': /* ascii */
325			case 'f': /* float */
326			case 'd': /* double */
327	greg	1.12	check(4,0);
328	greg	1.1	outform = argv[i][3];
329			break;
330			default:
331	greg	1.10	goto badopt;
332	greg	1.1	}
333			break;
334			case 'o': /* output */
335			outvals = argv[i]+2;
336			break;
337	greg	1.6	case 'h': /* toggle header */
338	greg	1.10	check(2,0);
339	greg	1.6	loadflags ^= IO_INFO;
340	greg	1.1	break;
341			#endif
342			#if RVIEW
343			case 'b': /* black and white */
344	greg	1.10	check(2,0);
345	greg	1.1	greyscale = !greyscale;
346			break;
347			case 'o': /* output device */
348	greg	1.10	check(2,1);
349	greg	1.1	devname = argv[++i];
350			break;
351			#endif
352			default:
353	greg	1.19	goto badopt;
354	greg	1.1	}
355			}
356			#if RPICT\|RVIEW
357			err = setview(&ourview); /* set viewing parameters */
358			if (err != NULL)
359			error(USER, err);
360			#endif
361	greg	1.22	#if RPICT
362	greg	1.23	normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
363	greg	1.22	#endif
364	greg	1.1	/* set up signal handling */
365			sigdie(SIGINT, "Interrupt");
366			sigdie(SIGHUP, "Hangup");
367			sigdie(SIGTERM, "Terminate");
368			sigdie(SIGPIPE, "Broken pipe");
369			#ifdef SIGXCPU
370			sigdie(SIGXCPU, "CPU limit exceeded");
371			sigdie(SIGXFSZ, "File size exceeded");
372			#endif
373			#if RPICT
374			signal(SIGALRM, report);
375			#else
376			sigdie(SIGALRM, "Alarm clock");
377			#endif
378			/* open error file */
379			if (errfile != NULL) {
380			if (freopen(errfile, "a", stderr) == NULL)
381	greg	1.14	quit(2);
382	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
383			getpid());
384			printargs(argc, argv, stderr);
385			fputs("\n", stderr);
386			fflush(stderr);
387			}
388			#ifdef NICE
389			nice(NICE); /* lower priority */
390			#endif
391	greg	1.19	/* get octree */
392	greg	1.1	#if RVIEW
393			loadflags &= ~IO_INFO;
394			#endif
395			if (i == argc)
396	greg	1.19	octname = NULL;
397			else if (i == argc-1)
398			octname = argv[i];
399	greg	1.1	else
400	greg	1.19	goto badopt;
401			#if RVIEW\|RTRACE
402			if (octname == NULL)
403			error(USER, "missing octree argument");
404	greg	1.1	#endif
405	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
406	greg	1.1
407			if (loadflags & IO_INFO) { /* print header */
408			printargs(i, argv, stdout);
409			#if RPICT
410			if (gotvfile) {
411			printf(VIEWSTR);
412			fprintview(&ourview, stdout);
413			printf("\n");
414			}
415	greg	1.23	if (pixaspect < .99 \|\| pixaspect > 1.01)
416	greg	1.22	fputaspect(pixaspect, stdout);
417	greg	1.1	#endif
418			printf("\n");
419			}
420
421			marksources(); /* find and mark sources */
422
423			amblp = NULL; / initialize ambient calculation */
424			setambient(ambfile);
425
426			#if RPICT
427			if (ralrm > 0) /* report init time */
428			report();
429	greg	1.20	render(zfile, recover); /* render the scene */
430	greg	1.1	#endif
431			#if RTRACE
432			rtrace(NULL); /* trace rays from stdin */
433			#endif
434			#if RVIEW
435			rview(); /* go */
436			#endif
437			quit(0);
438	greg	1.19
439			badopt:
440			sprintf(errmsg, "command line error at '%s'", argv[i]);
441			error(USER, errmsg);
442
443	greg	1.10	#undef check
444	greg	1.1	}
445
446
447			eputs(s) /* error output */
448			char *s;
449			{
450			if (errvec != NULL)
451			(*errvec)(s);
452			}
453
454
455			wputs(s) /* warning output */
456			char *s;
457			{
458			if (wrnvec != NULL)
459			(*wrnvec)(s);
460			}
461
462
463			cputs(s) /* command error output */
464			char *s;
465			{
466			if (cmdvec != NULL)
467			(*cmdvec)(s);
468			}
469
470
471			stderr_v(s) /* put string to stderr */
472			register char *s;
473			{
474			static int inline = 0;
475
476			if (!inline++) {
477			fputs(progname, stderr);
478			fputs(": ", stderr);
479			}
480			fputs(s, stderr);
481			if (*s && s[strlen(s)-1] == '\n') {
482			fflush(stderr);
483			inline = 0;
484			}
485			}
486
487
488			onsig(signo) /* fatal signal */
489			int signo;
490			{
491	greg	1.8	static int gotsig = 0;
492
493			if (gotsig++) /* two signals and we're gone! */
494	greg	1.9	_exit(signo);
495	greg	1.8
496	greg	1.1	eputs("signal - ");
497			eputs(sigerr[signo]);
498			eputs("\n");
499	greg	1.14	quit(3);
500	greg	1.1	}
501
502
503			sigdie(signo, msg) /* set fatal signal */
504			int signo;
505			char *msg;
506			{
507			if (signal(signo, onsig) == SIG_IGN)
508			signal(signo, SIG_IGN);
509			sigerr[signo] = msg;
510			}
511
512
513			printdefaults() /* print default values to stdout */
514			{
515			register char *cp;
516
517			#if RPICT\|RVIEW
518	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
519	greg	1.1	ourview.type==VT_PER ? "perspective" :
520			ourview.type==VT_PAR ? "parallel" :
521			"unknown");
522			printf("-vp %f %f %f\t# view point\n",
523			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
524			printf("-vd %f %f %f\t# view direction\n",
525			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
526			printf("-vu %f %f %f\t# view up\n",
527			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
528			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
529			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
530	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
531			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
532	greg	1.1	#endif
533	greg	1.22	#if RPICT\|RTRACE
534	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
535			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
536	greg	1.22	#endif
537			#if RPICT
538	greg	1.23	printf("-p %f\t\t\t# pixel aspect ratio\n", pixaspect);
539	greg	1.22	#endif
540	greg	1.13	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
541	greg	1.15	printf("-dc %f\t\t\t# direct certainty\n", shadcert);
542	greg	1.11	printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
543	greg	1.1	#if RPICT\|RVIEW
544			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
545	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
546	greg	1.22	#endif
547	greg	1.11	#if RPICT
548			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
549	greg	1.1	#endif
550			printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
551			colval(ambval,GRN), colval(ambval, BLU));
552			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
553			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
554			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
555			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
556			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
557			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
558			printf("-lw %f\t\t\t# limit weight\n", minweight);
559			#if RPICT
560			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
561			#endif
562			#if RVIEW
563			printf("-o %s\t\t\t\t# output device\n", devname);
564			#endif
565			#if RTRACE
566			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
567			inform, outform,
568			inform=='a' ? "ascii" :
569			inform=='f' ? "float" : "double",
570			outform=='a' ? "ascii" :
571			outform=='f' ? "float" : "double");
572			printf("-o%s\t\t\t\t# output", outvals);
573			for (cp = outvals; *cp; cp++)
574			switch (*cp) {
575			case 'i': printf(" irradiance"); break;
576			case 't': printf(" trace"); break;
577			case 'o': printf(" origin"); break;
578			case 'd': printf(" direction"); break;
579			case 'v': printf(" value"); break;
580			case 'l': printf(" length"); break;
581			case 'p': printf(" point"); break;
582			case 'n': printf(" normal"); break;
583			case 's': printf(" surface"); break;
584			case 'w': printf(" weight"); break;
585			case 'm': printf(" modifier"); break;
586			}
587			printf("\n");
588			#endif
589			}