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 */

extern int  ambnotify();                /* new object notify functions */
int  (*addobjnotify[])() = {ambnotify, NULL};

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, 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;
                        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, &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 '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);
#endif
                printf("\n");
        }

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

        setambient(ambfile);            /* initialize ambient calculation */

#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  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
        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:	1.28
Committed:	Sat Oct 13 21:32:22 1990 UTC (35 years ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.27:	+2 -0 lines
Log Message:	added fisheye view types
#	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	greg	1.24	extern int ambnotify(); /* new object notify functions */
55			int (*addobjnotify[])() = {ambnotify, NULL};
56
57	greg	1.1	CUBE thescene; /* our scene */
58
59			extern int ralrm; /* seconds between reports */
60			extern float pctdone; /* percentage done */
61
62			extern int greyscale; /* map colors to brightness? */
63			extern char devname; / output device name */
64
65			extern int inform; /* input format */
66			extern int outform; /* output format */
67			extern char outvals; / output values */
68
69			extern VIEW ourview; /* viewing parameters */
70
71			extern int hresolu; /* horizontal resolution */
72			extern int vresolu; /* vertical resolution */
73	greg	1.22	extern double pixaspect; /* pixel aspect ratio */
74	greg	1.1
75			extern int psample; /* pixel sample size */
76			extern double maxdiff; /* max. sample difference */
77	greg	1.11	extern double dstrpix; /* square pixel distribution */
78	greg	1.1
79			extern double dstrsrc; /* square source distribution */
80	greg	1.11	extern double shadthresh; /* shadow threshold */
81	greg	1.15	extern double shadcert; /* shadow testing certainty */
82	greg	1.1
83			extern int maxdepth; /* maximum recursion depth */
84			extern double minweight; /* minimum ray weight */
85			extern long nrays; /* number of rays traced */
86
87			extern COLOR ambval; /* ambient value */
88			extern double ambacc; /* ambient accuracy */
89			extern int ambres; /* ambient resolution */
90			extern int ambdiv; /* ambient divisions */
91			extern int ambssamp; /* ambient super-samples */
92			extern int ambounce; /* ambient bounces */
93			extern char amblist[]; / ambient include/exclude list */
94			extern int ambincl; /* include == 1, exclude == 0 */
95
96
97			main(argc, argv)
98			int argc;
99			char *argv[];
100			{
101	greg	1.16	#define check(olen,narg) if (argv[i][olen] \|\| narg >= argc-i) goto badopt
102	greg	1.1	double atof();
103			char *getenv();
104			int report();
105			char *err;
106			char *recover = NULL;
107	greg	1.20	char *zfile = NULL;
108	greg	1.1	char *errfile = NULL;
109			char *ambfile = NULL;
110			char **amblp = amblist;
111			int loadflags = ~IO_FILES;
112	greg	1.4	int rval, gotvfile = 0;
113	greg	1.1	int i;
114			/* global program name */
115			progname = argv[0];
116			/* get library path */
117			if ((libpath = getenv(ULIBVAR)) == NULL)
118			libpath = DEFPATH;
119	greg	1.10	/* option city */
120	greg	1.1	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
121	greg	1.18	if (!strcmp(argv[i], "-defaults") \|\|
122			!strcmp(argv[i], "-help")) {
123	greg	1.1	printdefaults();
124			quit(0);
125			}
126			#if RVIEW
127			if (!strcmp(argv[i], "-devices")) {
128			printdevices();
129			quit(0);
130			}
131			#endif
132	greg	1.21	#if RPICT\|RVIEW
133			rval = getviewopt(&ourview, argc-i, argv+i);
134			if (rval >= 0) {
135			i += rval;
136			continue;
137			}
138			#endif
139	greg	1.1	switch (argv[i][1]) {
140			#if RPICT\|RVIEW
141	greg	1.21	case 'v': /* view file */
142			if (argv[i][2] != 'f')
143	greg	1.10	goto badopt;
144	greg	1.21	check(3,1);
145	greg	1.25	rval = viewfile(argv[++i], &ourview, 0, 0);
146	greg	1.21	if (rval < 0) {
147			sprintf(errmsg,
148			"cannot open view file \"%s\"",
149			argv[i]);
150			error(SYSTEM, errmsg);
151			} else if (rval == 0) {
152			sprintf(errmsg,
153			"bad view file \"%s\"",
154			argv[i]);
155			error(USER, errmsg);
156			} else
157			gotvfile += rval;
158	greg	1.1	break;
159			#endif
160	greg	1.11	case 'd': /* direct */
161	greg	1.1	switch (argv[i][2]) {
162	greg	1.13	case 't': /* threshold */
163	greg	1.10	check(3,1);
164	greg	1.11	shadthresh = atof(argv[++i]);
165	greg	1.1	break;
166	greg	1.15	case 'c': /* certainty */
167			check(3,1);
168			shadcert = atof(argv[++i]);
169			break;
170	greg	1.11	case 'j': /* jitter */
171	greg	1.10	check(3,1);
172	greg	1.1	dstrsrc = atof(argv[++i]);
173			break;
174			default:
175	greg	1.10	goto badopt;
176	greg	1.1	}
177			break;
178			#if RPICT\|RVIEW
179			case 's': /* sample */
180			switch (argv[i][2]) {
181			case 'p': /* pixel */
182	greg	1.10	check(3,1);
183	greg	1.1	psample = atoi(argv[++i]);
184			break;
185	greg	1.13	case 't': /* threshold */
186	greg	1.10	check(3,1);
187	greg	1.1	maxdiff = atof(argv[++i]);
188			break;
189	greg	1.11	#if RPICT
190			case 'j': /* jitter */
191			check(3,1);
192			dstrpix = atof(argv[++i]);
193			break;
194			#endif
195	greg	1.1	default:
196	greg	1.10	goto badopt;
197	greg	1.1	}
198			break;
199			#endif
200	greg	1.22	#if RPICT\|RTRACE
201	greg	1.1	case 'x': /* x resolution */
202	greg	1.10	check(2,1);
203	greg	1.1	hresolu = atoi(argv[++i]);
204			break;
205			case 'y': /* y resolution */
206	greg	1.10	check(2,1);
207	greg	1.1	vresolu = atoi(argv[++i]);
208			break;
209	greg	1.22	#endif
210			#if RPICT
211			case 'p': /* pixel aspect */
212	greg	1.23	check(2,1);
213	greg	1.22	pixaspect = atof(argv[++i]);
214			break;
215			#endif
216	greg	1.1	case 'w': /* warnings */
217	greg	1.10	check(2,0);
218	greg	1.1	wrnvec = wrnvec==NULL ? stderr_v : NULL;
219			break;
220			case 'e': /* error file */
221	greg	1.10	check(2,1);
222	greg	1.1	errfile = argv[++i];
223			break;
224			case 'l': /* limit */
225			switch (argv[i][2]) {
226			case 'r': /* recursion */
227	greg	1.10	check(3,1);
228	greg	1.1	maxdepth = atoi(argv[++i]);
229			break;
230			case 'w': /* weight */
231	greg	1.10	check(3,1);
232	greg	1.1	minweight = atof(argv[++i]);
233			break;
234			default:
235	greg	1.10	goto badopt;
236	greg	1.1	}
237			break;
238			#if RPICT
239	greg	1.20	case 'z': /* z file */
240			check(2,1);
241			zfile = argv[++i];
242			break;
243	greg	1.1	case 'r': /* recover file */
244	greg	1.10	check(2,1);
245	greg	1.1	recover = argv[++i];
246	greg	1.25	rval = viewfile(recover, &ourview, &hresolu, &vresolu);
247	greg	1.5	if (rval <= 0) {
248			sprintf(errmsg,
249			"cannot recover view parameters from \"%s\"", recover);
250			error(WARNING, errmsg);
251	greg	1.25	} else {
252	greg	1.4	gotvfile += rval;
253	greg	1.25	pixaspect = 0.0;
254			}
255	greg	1.1	break;
256			case 't': /* timer */
257	greg	1.10	check(2,1);
258	greg	1.1	ralrm = atoi(argv[++i]);
259			break;
260			#endif
261			case 'a': /* ambient */
262			switch (argv[i][2]) {
263			case 'v': /* value */
264	greg	1.10	check(3,3);
265	greg	1.1	setcolor(ambval, atof(argv[i+1]),
266			atof(argv[i+2]),
267			atof(argv[i+3]));
268			i += 3;
269			break;
270			case 'a': /* accuracy */
271	greg	1.10	check(3,1);
272	greg	1.1	ambacc = atof(argv[++i]);
273			break;
274			case 'r': /* resolution */
275	greg	1.10	check(3,1);
276	greg	1.1	ambres = atoi(argv[++i]);
277			break;
278			case 'd': /* divisions */
279	greg	1.10	check(3,1);
280	greg	1.1	ambdiv = atoi(argv[++i]);
281			break;
282			case 's': /* super-samp */
283	greg	1.10	check(3,1);
284	greg	1.1	ambssamp = atoi(argv[++i]);
285			break;
286			case 'b': /* bounces */
287	greg	1.10	check(3,1);
288	greg	1.1	ambounce = atoi(argv[++i]);
289			break;
290			case 'i': /* include */
291	greg	1.10	check(3,1);
292	greg	1.1	if (ambincl != 1) {
293			ambincl = 1;
294			amblp = amblist;
295			}
296			*amblp++ = argv[++i];
297			break;
298			case 'e': /* exclude */
299	greg	1.10	check(3,1);
300	greg	1.1	if (ambincl != 0) {
301			ambincl = 0;
302			amblp = amblist;
303			}
304			*amblp++ = argv[++i];
305			break;
306			case 'f': /* file */
307	greg	1.10	check(3,1);
308	greg	1.1	ambfile= argv[++i];
309			break;
310			default:
311	greg	1.10	goto badopt;
312	greg	1.1	}
313			break;
314			#if RTRACE
315			case 'f': /* format i/o */
316			switch (argv[i][2]) {
317			case 'a': /* ascii */
318			case 'f': /* float */
319			case 'd': /* double */
320			inform = argv[i][2];
321			break;
322			default:
323	greg	1.10	goto badopt;
324	greg	1.1	}
325			switch (argv[i][3]) {
326			case '\0':
327			outform = inform;
328			break;
329			case 'a': /* ascii */
330			case 'f': /* float */
331			case 'd': /* double */
332	greg	1.12	check(4,0);
333	greg	1.1	outform = argv[i][3];
334			break;
335			default:
336	greg	1.10	goto badopt;
337	greg	1.1	}
338			break;
339			case 'o': /* output */
340			outvals = argv[i]+2;
341			break;
342	greg	1.6	case 'h': /* toggle header */
343	greg	1.10	check(2,0);
344	greg	1.6	loadflags ^= IO_INFO;
345	greg	1.1	break;
346			#endif
347			#if RVIEW
348			case 'b': /* black and white */
349	greg	1.10	check(2,0);
350	greg	1.1	greyscale = !greyscale;
351			break;
352			case 'o': /* output device */
353	greg	1.10	check(2,1);
354	greg	1.1	devname = argv[++i];
355			break;
356			#endif
357			default:
358	greg	1.19	goto badopt;
359	greg	1.1	}
360			}
361	greg	1.24	*amblp = NULL;
362	greg	1.1	#if RPICT\|RVIEW
363			err = setview(&ourview); /* set viewing parameters */
364			if (err != NULL)
365			error(USER, err);
366			#endif
367	greg	1.22	#if RPICT
368	greg	1.23	normaspect(viewaspect(&ourview), &pixaspect, &hresolu, &vresolu);
369	greg	1.22	#endif
370	greg	1.1	/* set up signal handling */
371			sigdie(SIGINT, "Interrupt");
372			sigdie(SIGHUP, "Hangup");
373			sigdie(SIGTERM, "Terminate");
374			sigdie(SIGPIPE, "Broken pipe");
375			#ifdef SIGXCPU
376			sigdie(SIGXCPU, "CPU limit exceeded");
377			sigdie(SIGXFSZ, "File size exceeded");
378			#endif
379			#if RPICT
380			signal(SIGALRM, report);
381			#else
382			sigdie(SIGALRM, "Alarm clock");
383			#endif
384			/* open error file */
385			if (errfile != NULL) {
386			if (freopen(errfile, "a", stderr) == NULL)
387	greg	1.14	quit(2);
388	greg	1.1	fprintf(stderr, "************\n* PID %5d: ",
389			getpid());
390			printargs(argc, argv, stderr);
391			fputs("\n", stderr);
392			fflush(stderr);
393			}
394			#ifdef NICE
395			nice(NICE); /* lower priority */
396			#endif
397	greg	1.19	/* get octree */
398	greg	1.1	#if RVIEW
399			loadflags &= ~IO_INFO;
400			#endif
401			if (i == argc)
402	greg	1.19	octname = NULL;
403			else if (i == argc-1)
404			octname = argv[i];
405	greg	1.1	else
406	greg	1.19	goto badopt;
407			#if RVIEW\|RTRACE
408			if (octname == NULL)
409			error(USER, "missing octree argument");
410	greg	1.1	#endif
411	greg	1.19	readoct(octname, loadflags, &thescene, NULL);
412	greg	1.1
413			if (loadflags & IO_INFO) { /* print header */
414			printargs(i, argv, stdout);
415			#if RPICT
416			if (gotvfile) {
417			printf(VIEWSTR);
418			fprintview(&ourview, stdout);
419			printf("\n");
420			}
421	greg	1.23	if (pixaspect < .99 \|\| pixaspect > 1.01)
422	greg	1.22	fputaspect(pixaspect, stdout);
423	greg	1.1	#endif
424			printf("\n");
425			}
426
427			marksources(); /* find and mark sources */
428
429	greg	1.24	setambient(ambfile); /* initialize ambient calculation */
430	greg	1.1
431			#if RPICT
432			if (ralrm > 0) /* report init time */
433			report();
434	greg	1.20	render(zfile, recover); /* render the scene */
435	greg	1.1	#endif
436			#if RTRACE
437			rtrace(NULL); /* trace rays from stdin */
438			#endif
439			#if RVIEW
440			rview(); /* go */
441			#endif
442			quit(0);
443	greg	1.19
444			badopt:
445			sprintf(errmsg, "command line error at '%s'", argv[i]);
446			error(USER, errmsg);
447
448	greg	1.10	#undef check
449	greg	1.1	}
450
451
452			eputs(s) /* error output */
453			char *s;
454			{
455			if (errvec != NULL)
456			(*errvec)(s);
457			}
458
459
460			wputs(s) /* warning output */
461			char *s;
462			{
463			if (wrnvec != NULL)
464			(*wrnvec)(s);
465			}
466
467
468			cputs(s) /* command error output */
469			char *s;
470			{
471			if (cmdvec != NULL)
472			(*cmdvec)(s);
473			}
474
475
476			stderr_v(s) /* put string to stderr */
477			register char *s;
478			{
479	greg	1.26	static int midline = 0;
480	greg	1.1
481	greg	1.27	if (!*s)
482			return;
483	greg	1.26	if (!midline++) {
484	greg	1.1	fputs(progname, stderr);
485			fputs(": ", stderr);
486			}
487			fputs(s, stderr);
488	greg	1.27	if (s[strlen(s)-1] == '\n') {
489	greg	1.1	fflush(stderr);
490	greg	1.26	midline = 0;
491	greg	1.1	}
492			}
493
494
495			onsig(signo) /* fatal signal */
496			int signo;
497			{
498	greg	1.8	static int gotsig = 0;
499
500			if (gotsig++) /* two signals and we're gone! */
501	greg	1.9	_exit(signo);
502	greg	1.8
503	greg	1.1	eputs("signal - ");
504			eputs(sigerr[signo]);
505			eputs("\n");
506	greg	1.14	quit(3);
507	greg	1.1	}
508
509
510			sigdie(signo, msg) /* set fatal signal */
511			int signo;
512			char *msg;
513			{
514			if (signal(signo, onsig) == SIG_IGN)
515			signal(signo, SIG_IGN);
516			sigerr[signo] = msg;
517			}
518
519
520			printdefaults() /* print default values to stdout */
521			{
522			register char *cp;
523
524			#if RPICT\|RVIEW
525	greg	1.7	printf("-vt%c\t\t\t\t# view type %s\n", ourview.type,
526	greg	1.1	ourview.type==VT_PER ? "perspective" :
527			ourview.type==VT_PAR ? "parallel" :
528	greg	1.28	ourview.type==VT_HEM ? "hemispherical" :
529			ourview.type==VT_ANG ? "angular" :
530	greg	1.1	"unknown");
531			printf("-vp %f %f %f\t# view point\n",
532			ourview.vp[0], ourview.vp[1], ourview.vp[2]);
533			printf("-vd %f %f %f\t# view direction\n",
534			ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]);
535			printf("-vu %f %f %f\t# view up\n",
536			ourview.vup[0], ourview.vup[1], ourview.vup[2]);
537			printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz);
538			printf("-vv %f\t\t\t# view vertical size\n", ourview.vert);
539	greg	1.22	printf("-vs %f\t\t\t# view shift\n", ourview.hoff);
540			printf("-vl %f\t\t\t# view lift\n", ourview.voff);
541	greg	1.1	#endif
542	greg	1.22	#if RPICT\|RTRACE
543	greg	1.1	printf("-x %-9d\t\t\t# x resolution\n", hresolu);
544			printf("-y %-9d\t\t\t# y resolution\n", vresolu);
545	greg	1.22	#endif
546			#if RPICT
547	greg	1.23	printf("-p %f\t\t\t# pixel aspect ratio\n", pixaspect);
548	greg	1.22	#endif
549	greg	1.13	printf("-dt %f\t\t\t# direct threshold\n", shadthresh);
550	greg	1.15	printf("-dc %f\t\t\t# direct certainty\n", shadcert);
551	greg	1.11	printf("-dj %f\t\t\t# direct jitter\n", dstrsrc);
552	greg	1.1	#if RPICT\|RVIEW
553			printf("-sp %-9d\t\t\t# sample pixel\n", psample);
554	greg	1.13	printf("-st %f\t\t\t# sample threshold\n", maxdiff);
555	greg	1.22	#endif
556	greg	1.11	#if RPICT
557			printf("-sj %f\t\t\t# sample jitter\n", dstrpix);
558	greg	1.1	#endif
559			printf("-av %f %f %f\t# ambient value\n", colval(ambval,RED),
560			colval(ambval,GRN), colval(ambval, BLU));
561			printf("-ab %-9d\t\t\t# ambient bounces\n", ambounce);
562			printf("-aa %f\t\t\t# ambient accuracy\n", ambacc);
563			printf("-ar %-9d\t\t\t# ambient resolution\n", ambres);
564			printf("-ad %-9d\t\t\t# ambient divisions\n", ambdiv);
565			printf("-as %-9d\t\t\t# ambient super-samples\n", ambssamp);
566			printf("-lr %-9d\t\t\t# limit reflection\n", maxdepth);
567			printf("-lw %f\t\t\t# limit weight\n", minweight);
568			#if RPICT
569			printf("-t %-9d\t\t\t# time between reports\n", ralrm);
570			#endif
571			#if RVIEW
572			printf("-o %s\t\t\t\t# output device\n", devname);
573			#endif
574			#if RTRACE
575			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
576			inform, outform,
577			inform=='a' ? "ascii" :
578			inform=='f' ? "float" : "double",
579			outform=='a' ? "ascii" :
580			outform=='f' ? "float" : "double");
581			printf("-o%s\t\t\t\t# output", outvals);
582			for (cp = outvals; *cp; cp++)
583			switch (*cp) {
584			case 'i': printf(" irradiance"); break;
585			case 't': printf(" trace"); break;
586			case 'o': printf(" origin"); break;
587			case 'd': printf(" direction"); break;
588			case 'v': printf(" value"); break;
589			case 'l': printf(" length"); break;
590			case 'p': printf(" point"); break;
591			case 'n': printf(" normal"); break;
592			case 's': printf(" surface"); break;
593			case 'w': printf(" weight"); break;
594			case 'm': printf(" modifier"); break;
595			}
596			printf("\n");
597			#endif
598			}