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 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
                switch (argv[i][1]) {
#if  RPICT|RVIEW
                case 'v':                               /* view */
                        switch (argv[i][2]) {
                        case 't':                               /* type */
                                check(4,0);
                                ourview.type = argv[i][3];
                                break;
                        case 'p':                               /* point */
                                check(3,3);
                                ourview.vp[0] = atof(argv[++i]);
                                ourview.vp[1] = atof(argv[++i]);
                                ourview.vp[2] = atof(argv[++i]);
                                break;
                        case 'd':                               /* direction */
                                check(3,3);
                                ourview.vdir[0] = atof(argv[++i]);
                                ourview.vdir[1] = atof(argv[++i]);
                                ourview.vdir[2] = atof(argv[++i]);
                                break;
                        case 'u':                               /* up */
                                check(3,3);
                                ourview.vup[0] = atof(argv[++i]);
                                ourview.vup[1] = atof(argv[++i]);
                                ourview.vup[2] = atof(argv[++i]);
                                break;
                        case 'h':                               /* horizontal */
                                check(3,1);
                                ourview.horiz = atof(argv[++i]);
                                break;
                        case 'v':                               /* vertical */
                                check(3,1);
                                ourview.vert = atof(argv[++i]);
                                break;
                        case 'f':                               /* file */
                                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;
                        default:
                                goto badopt;
                        }
                        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;
                case 'x':                               /* x resolution */
                        check(2,1);
                        ourview.hresolu = atoi(argv[++i]);
                        break;
                case 'y':                               /* y resolution */
                        check(2,1);
                        ourview.vresolu = atoi(argv[++i]);
                        break;
#endif
#if  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
                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
                                        /* 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");
                }
#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("-x  %-9d\t\t\t# x resolution\n", ourview.hresolu);
        printf("-y  %-9d\t\t\t# y resolution\n", ourview.vresolu);
#endif
#if  RTRACE
        printf("-x  %-9d\t\t\t# x resolution\n", hresolu);
        printf("-y  %-9d\t\t\t# y resolution\n", vresolu);
#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);
#if  RPICT
        printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
#endif
#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:	1.20
Committed:	Sun Dec 10 13:42:42 1989 UTC (35 years, 5 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.19:	+6 -1 lines
Log Message:	added z-file output to rpict
#	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
71			extern int psample; /* pixel sample size */
72			extern double maxdiff; /* max. sample difference */
73	greg	1.11	extern double dstrpix; /* square pixel distribution */
74	greg	1.1
75			extern double dstrsrc; /* square source distribution */
76	greg	1.11	extern double shadthresh; /* shadow threshold */
77	greg	1.15	extern double shadcert; /* shadow testing certainty */
78	greg	1.1
79			extern int maxdepth; /* maximum recursion depth */
80			extern double minweight; /* minimum ray weight */
81			extern long nrays; /* number of rays traced */
82
83			extern COLOR ambval; /* ambient value */
84			extern double ambacc; /* ambient accuracy */
85			extern int ambres; /* ambient resolution */
86			extern int ambdiv; /* ambient divisions */
87			extern int ambssamp; /* ambient super-samples */
88			extern int ambounce; /* ambient bounces */
89			extern char amblist[]; / ambient include/exclude list */
90			extern int ambincl; /* include == 1, exclude == 0 */
91
92
93			main(argc, argv)
94			int argc;
95			char *argv[];
96			{
97	greg	1.16	#define check(olen,narg) if (argv[i][olen] \|\| narg >= argc-i) goto badopt
98	greg	1.1	double atof();
99			char *getenv();
100			int report();
101			char *err;
102			char *recover = NULL;
103	greg	1.20	char *zfile = NULL;
104	greg	1.1	char *errfile = NULL;
105			char *ambfile = NULL;
106			char **amblp = amblist;
107			int loadflags = ~IO_FILES;
108	greg	1.4	int rval, gotvfile = 0;
109	greg	1.1	int i;
110			/* global program name */
111			progname = argv[0];
112			/* get library path */
113			if ((libpath = getenv(ULIBVAR)) == NULL)
114			libpath = DEFPATH;
115	greg	1.10	/* option city */
116	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
117	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
118			!strcmp(argv[i], "-help")) {
119	greg	1.1	printdefaults();
120			quit(0);
121			}
122			#if RVIEW
123			if (!strcmp(argv[i], "-devices")) {
124			printdevices();
125			quit(0);
126			}
127			#endif
128			switch (argv[i][1]) {
129			#if RPICT\|RVIEW
130			case 'v': /* view */
131			switch (argv[i][2]) {
132			case 't': /* type */
133	greg	1.12	check(4,0);
134	greg	1.1	ourview.type = argv[i][3];
135			break;
136			case 'p': /* point */
137	greg	1.10	check(3,3);
138	greg	1.1	ourview.vp[0] = atof(argv[++i]);
139			ourview.vp[1] = atof(argv[++i]);
140			ourview.vp[2] = atof(argv[++i]);
141			break;
142			case 'd': /* direction */
143	greg	1.10	check(3,3);
144	greg	1.1	ourview.vdir[0] = atof(argv[++i]);
145			ourview.vdir[1] = atof(argv[++i]);
146			ourview.vdir[2] = atof(argv[++i]);
147			break;
148			case 'u': /* up */
149	greg	1.10	check(3,3);
150	greg	1.1	ourview.vup[0] = atof(argv[++i]);
151			ourview.vup[1] = atof(argv[++i]);
152			ourview.vup[2] = atof(argv[++i]);
153			break;
154			case 'h': /* horizontal */
155	greg	1.10	check(3,1);
156	greg	1.1	ourview.horiz = atof(argv[++i]);
157			break;
158			case 'v': /* vertical */
159	greg	1.10	check(3,1);
160	greg	1.1	ourview.vert = atof(argv[++i]);
161			break;
162			case 'f': /* file */
163	greg	1.10	check(3,1);
164	greg	1.4	rval = viewfile(argv[++i], &ourview);
165			if (rval < 0) {
166	greg	1.1	sprintf(errmsg,
167			"cannot open view file \"%s\"",
168			argv[i]);
169			error(SYSTEM, errmsg);
170	greg	1.4	} else if (rval == 0) {
171	greg	1.1	sprintf(errmsg,
172			"bad view file \"%s\"",
173			argv[i]);
174			error(USER, errmsg);
175	greg	1.4	} else
176			gotvfile += rval;
177	greg	1.1	break;
178			default:
179	greg	1.10	goto badopt;
180	greg	1.1	}
181			break;
182			#endif
183	greg	1.11	case 'd': /* direct */
184	greg	1.1	switch (argv[i][2]) {
185	greg	1.13	case 't': /* threshold */
186	greg	1.10	check(3,1);
187	greg	1.11	shadthresh = atof(argv[++i]);
188	greg	1.1	break;
189	greg	1.15	case 'c': /* certainty */
190			check(3,1);
191			shadcert = atof(argv[++i]);
192			break;
193	greg	1.11	case 'j': /* jitter */
194	greg	1.10	check(3,1);
195	greg	1.1	dstrsrc = atof(argv[++i]);
196			break;
197			default:
198	greg	1.10	goto badopt;
199	greg	1.1	}
200			break;
201			#if RPICT\|RVIEW
202			case 's': /* sample */
203			switch (argv[i][2]) {
204			case 'p': /* pixel */
205	greg	1.10	check(3,1);
206	greg	1.1	psample = atoi(argv[++i]);
207			break;
208	greg	1.13	case 't': /* threshold */
209	greg	1.10	check(3,1);
210	greg	1.1	maxdiff = atof(argv[++i]);
211			break;
212	greg	1.11	#if RPICT
213			case 'j': /* jitter */
214			check(3,1);
215			dstrpix = atof(argv[++i]);
216			break;
217			#endif
218	greg	1.1	default:
219	greg	1.10	goto badopt;
220	greg	1.1	}
221			break;
222			case 'x': /* x resolution */
223	greg	1.10	check(2,1);
224	greg	1.1	ourview.hresolu = atoi(argv[++i]);
225			break;
226			case 'y': /* y resolution */
227	greg	1.10	check(2,1);
228	greg	1.1	ourview.vresolu = atoi(argv[++i]);
229			break;
230			#endif
231			#if RTRACE
232			case 'x': /* x resolution */
233	greg	1.10	check(2,1);
234	greg	1.1	hresolu = atoi(argv[++i]);
235			break;
236			case 'y': /* y resolution */
237	greg	1.10	check(2,1);
238	greg	1.1	vresolu = atoi(argv[++i]);
239			break;
240			#endif
241			case 'w': /* warnings */
242	greg	1.10	check(2,0);
243	greg	1.1	wrnvec = wrnvec==NULL ? stderr_v : NULL;
244			break;
245			case 'e': /* error file */
246	greg	1.10	check(2,1);
247	greg	1.1	errfile = argv[++i];
248			break;
249			case 'l': /* limit */
250			switch (argv[i][2]) {
251			case 'r': /* recursion */
252	greg	1.10	check(3,1);
253	greg	1.1	maxdepth = atoi(argv[++i]);
254			break;
255			case 'w': /* weight */
256	greg	1.10	check(3,1);
257	greg	1.1	minweight = atof(argv[++i]);
258			break;
259			default:
260	greg	1.10	goto badopt;
261	greg	1.1	}
262			break;
263			#if RPICT
264	greg	1.20	case 'z': /* z file */
265			check(2,1);
266			zfile = argv[++i];
267			break;
268	greg	1.1	case 'r': /* recover file */
269	greg	1.10	check(2,1);
270	greg	1.1	recover = argv[++i];
271	greg	1.4	rval = viewfile(recover, &ourview);
272	greg	1.5	if (rval <= 0) {
273			sprintf(errmsg,
274			"cannot recover view parameters from \"%s\"", recover);
275			error(WARNING, errmsg);
276			} else
277	greg	1.4	gotvfile += rval;
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			case 'f': /* format i/o */
339			switch (argv[i][2]) {
340			case 'a': /* ascii */
341			case 'f': /* float */
342			case 'd': /* double */
343			inform = argv[i][2];
344			break;
345			default:
346	greg	1.10	goto badopt;
347	greg	1.1	}
348			switch (argv[i][3]) {
349			case '\0':
350			outform = inform;
351			break;
352			case 'a': /* ascii */
353			case 'f': /* float */
354			case 'd': /* double */
355	greg	1.12	check(4,0);
356	greg	1.1	outform = argv[i][3];
357			break;
358			default:
359	greg	1.10	goto badopt;
360	greg	1.1	}
361			break;
362			case 'o': /* output */
363			outvals = argv[i]+2;
364			break;
365	greg	1.6	case 'h': /* toggle header */
366	greg	1.10	check(2,0);
367	greg	1.6	loadflags ^= IO_INFO;
368	greg	1.1	break;
369			#endif
370			#if RVIEW
371			case 'b': /* black and white */
372	greg	1.10	check(2,0);
373	greg	1.1	greyscale = !greyscale;
374			break;
375			case 'o': /* output device */
376	greg	1.10	check(2,1);
377	greg	1.1	devname = argv[++i];
378			break;
379			#endif
380			default:
381	greg	1.19	goto badopt;
382	greg	1.1	}
383			}
384			#if RPICT\|RVIEW
385			err = setview(&ourview); /* set viewing parameters */
386			if (err != NULL)
387			error(USER, err);
388			#endif
389			/* set up signal handling */
390			sigdie(SIGINT, "Interrupt");
391			sigdie(SIGHUP, "Hangup");
392			sigdie(SIGTERM, "Terminate");
393			sigdie(SIGPIPE, "Broken pipe");
394			#ifdef SIGXCPU
395			sigdie(SIGXCPU, "CPU limit exceeded");
396			sigdie(SIGXFSZ, "File size exceeded");
397			#endif
398			#if RPICT
399			signal(SIGALRM, report);
400			#else
401			sigdie(SIGALRM, "Alarm clock");
402			#endif
403			/* open error file */
404			if (errfile != NULL) {
405			if (freopen(errfile, "a", stderr) == NULL)
406	greg	1.14	quit(2);
407	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
408			getpid());
409			printargs(argc, argv, stderr);
410			fputs("\n", stderr);
411			fflush(stderr);
412			}
413			#ifdef NICE
414			nice(NICE); /* lower priority */
415			#endif
416	greg	1.19	/* get octree */
417	greg	1.1	#if RVIEW
418			loadflags &= ~IO_INFO;
419			#endif
420			if (i == argc)
421	greg	1.19	octname = NULL;
422			else if (i == argc-1)
423			octname = argv[i];
424	greg	1.1	else
425	greg	1.19	goto badopt;
426			#if RVIEW\|RTRACE
427			if (octname == NULL)
428			error(USER, "missing octree argument");
429	greg	1.1	#endif
430	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
431	greg	1.1
432			if (loadflags & IO_INFO) { /* print header */
433			printargs(i, argv, stdout);
434			#if RPICT
435			if (gotvfile) {
436			printf(VIEWSTR);
437			fprintview(&ourview, stdout);
438			printf("\n");
439			}
440			#endif
441			printf("\n");
442			}
443
444			marksources(); /* find and mark sources */
445
446			amblp = NULL; / initialize ambient calculation */
447			setambient(ambfile);
448
449			#if RPICT
450			if (ralrm > 0) /* report init time */
451			report();
452	greg	1.20	render(zfile, recover); /* render the scene */
453	greg	1.1	#endif
454			#if RTRACE
455			rtrace(NULL); /* trace rays from stdin */
456			#endif
457			#if RVIEW
458			rview(); /* go */
459			#endif
460			quit(0);
461	greg	1.19
462			badopt:
463			sprintf(errmsg, "command line error at '%s'", argv[i]);
464			error(USER, errmsg);
465
466	greg	1.10	#undef check
467	greg	1.1	}
468
469
470			eputs(s) /* error output */
471			char *s;
472			{
473			if (errvec != NULL)
474			(*errvec)(s);
475			}
476
477
478			wputs(s) /* warning output */
479			char *s;
480			{
481			if (wrnvec != NULL)
482			(*wrnvec)(s);
483			}
484
485
486			cputs(s) /* command error output */
487			char *s;
488			{
489			if (cmdvec != NULL)
490			(*cmdvec)(s);
491			}
492
493
494			stderr_v(s) /* put string to stderr */
495			register char *s;
496			{
497			static int inline = 0;
498
499			if (!inline++) {
500			fputs(progname, stderr);
501			fputs(": ", stderr);
502			}
503			fputs(s, stderr);
504			if (*s && s[strlen(s)-1] == '\n') {
505			fflush(stderr);
506			inline = 0;
507			}
508			}
509
510
511			onsig(signo) /* fatal signal */
512			int signo;
513			{
514	greg	1.8	static int gotsig = 0;
515
516			if (gotsig++) /* two signals and we're gone! */
517	greg	1.9	_exit(signo);
518	greg	1.8
519	greg	1.1	eputs("signal - ");
520			eputs(sigerr[signo]);
521			eputs("\n");
522	greg	1.14	quit(3);
523	greg	1.1	}
524
525
526			sigdie(signo, msg) /* set fatal signal */
527			int signo;
528			char *msg;
529			{
530			if (signal(signo, onsig) == SIG_IGN)
531			signal(signo, SIG_IGN);
532			sigerr[signo] = msg;
533			}
534
535
536			printdefaults() /* print default values to stdout */
537			{
538			register char *cp;
539
540			#if RPICT\|RVIEW
541	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
542	greg	1.1	ourview.type==VT_PER ? "perspective" :
543			ourview.type==VT_PAR ? "parallel" :
544			"unknown");
545			printf("-vp %f %f %f\t# view point\n",
546			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
547			printf("-vd %f %f %f\t# view direction\n",
548			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
549			printf("-vu %f %f %f\t# view up\n",
550			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
551			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
552			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
553			printf("-x %-9d\t\t\t# x resolution\n", ourview.hresolu);
554			printf("-y %-9d\t\t\t# y resolution\n", ourview.vresolu);
555			#endif
556			#if RTRACE
557			printf("-x %-9d\t\t\t# x resolution\n", hresolu);
558			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
559			#endif
560	greg	1.13	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
561	greg	1.15	printf("-dc %f\t\t\t# direct certainty\n", shadcert);
562	greg	1.11	printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
563	greg	1.1	#if RPICT\|RVIEW
564			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
565	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
566	greg	1.11	#if RPICT
567			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
568			#endif
569	greg	1.1	#endif
570			printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
571			colval(ambval,GRN), colval(ambval, BLU));
572			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
573			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
574			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
575			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
576			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
577			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
578			printf("-lw %f\t\t\t# limit weight\n", minweight);
579			#if RPICT
580			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
581			#endif
582			#if RVIEW
583			printf("-o %s\t\t\t\t# output device\n", devname);
584			#endif
585			#if RTRACE
586			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
587			inform, outform,
588			inform=='a' ? "ascii" :
589			inform=='f' ? "float" : "double",
590			outform=='a' ? "ascii" :
591			outform=='f' ? "float" : "double");
592			printf("-o%s\t\t\t\t# output", outvals);
593			for (cp = outvals; *cp; cp++)
594			switch (*cp) {
595			case 'i': printf(" irradiance"); break;
596			case 't': printf(" trace"); break;
597			case 'o': printf(" origin"); break;
598			case 'd': printf(" direction"); break;
599			case 'v': printf(" value"); break;
600			case 'l': printf(" length"); break;
601			case 'p': printf(" point"); break;
602			case 'n': printf(" normal"); break;
603			case 's': printf(" surface"); break;
604			case 'w': printf(" weight"); break;
605			case 'm': printf(" modifier"); break;
606			}
607			printf("\n");
608			#endif
609			}