src/rt/rxcmain.cpp

#ifndef lint
static const char       RCSid[] = "$Id: rxcmain.cpp,v 2.4 2024/10/30 17:26:13 greg Exp $";
#endif
/*
 *  rxcmain.c - main for rxcontrib ray contribution tracer
 */

#include "copyright.h"

#include <signal.h>
#include <time.h>
#include <ctype.h>
#include "RcontribSimulManager.h"
#include "platform.h"
#include "func.h"

const char      *sigerr[NSIG];          /* signal error messages */

int     nproc = 1;                      /* number of processes requested */

int     inpfmt = 'a';                   /* input format */
int     outfmt = 'f';                   /* output format */

int     report_intvl = 0;               /* reporting interval (seconds) */

extern char *   progname;               // global argv[0]

RcontribSimulManager    myRCmanager;    // global rcontrib simulation manager

#define RCONTRIB_FEATURES       "Multiprocessing\n" \
                                "Accumulation\nRecovery\n" \
                                "ImmediateIrradiance\n" \
                                "ProgressReporting\nDistanceLimiting\n" \
                                "InputFormats=a,f,d\nOutputFormats=f,d,c\n" \
                                "Outputs=V,W\n" \
                                "OutputCS=RGB,spec\n"

static void     rxcontrib(const int rstart = 0);

static void
printdefaults(void)                     /* print default values to stdout */
{
        printf("-c %-5d\t\t\t# accumulated rays per record\n", myRCmanager.accum);
        printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
                        contrib ? "contributions" : "coefficients");
        if (myRCmanager.HasFlag(RTimmIrrad))
                printf("-I+\t\t\t\t# immediate irradiance on\n");
        printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
        if (xres > 0)
                printf("-x %-9d\t\t\t# x resolution\n", xres);
        printf("-y %-9d\t\t\t# y resolution\n", yres);
        printf(myRCmanager.HasFlag(RTlimDist) ?
                        "-ld+\t\t\t\t# limit distance on\n" :
                        "-ld-\t\t\t\t# limit distance off\n");
        printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
                        inpfmt, outfmt, formstr(inpfmt), formstr(outfmt));
        if (report_intvl > 0)
                printf("-t %-9d\t\t\t#  time between reports\n", report_intvl);
        printf(erract[WARNING].pf != NULL ?
                        "-w+\t\t\t\t# warning messages on\n" :
                        "-w-\t\t\t\t# warning messages off\n");
        print_rdefaults();
}


static void
onsig(                          /* fatal signal */
        int  signo
)
{
        static int  gotsig = 0;

        if (gotsig++)                   /* two signals and we're gone! */
                _exit(signo);

#ifdef SIGALRM
        alarm(180);                     /* allow 3 minutes to clean up */
        signal(SIGALRM, SIG_DFL);       /* make certain we do die */
#endif
        eputs("signal - ");
        eputs(sigerr[signo]);
        eputs("\n");
        quit(3);
}


static void
sigdie(                 /* set fatal signal */
        int  signo,
        const char  *msg
)
{
        if (signal(signo, onsig) == SIG_IGN)
                signal(signo, SIG_IGN);
        sigerr[signo] = msg;
}

const char *
formstr(int f)                          // return format identifier
{
        switch (f) {
        case 'a': return("ascii");
        case 'f': return("float");
        case 'd': return("double");
        case 'c': return(NCSAMP==3 ? COLRFMT : SPECFMT);
        }
        return("unknown");
}

/* set input/output format */
static void
setformat(const char *fmt)
{
        switch (fmt[0]) {
        case 'f':
        case 'd':
                SET_FILE_BINARY(stdin);
                /* fall through */
        case 'a':
                inpfmt = fmt[0];
                break;
        default:
                goto fmterr;
        }
        switch (fmt[1]) {
        case '\0':
                if (inpfmt == 'a')
                        goto fmterr;
                outfmt = inpfmt;
                return;
        case 'f':
        case 'd':
        case 'c':
                outfmt = fmt[1];
                break;
        default:
                goto fmterr;
        }
        if (!fmt[2])
                return;
fmterr:
        sprintf(errmsg, "Unsupported i/o format: -f%s", fmt);
        error(USER, errmsg);
}


/* Set overriding options */
static void
override_options(void)
{
        shadthresh = 0;
        ambssamp = 0;
        ambacc = 0;
}


int
main(int argc, char *argv[])
{
#define  check(ol,al)           if (argv[i][ol] || \
                                badarg(argc-i-1,argv+i+1,al)) \
                                goto badopt
#define  check_bool(olen,var)           switch (argv[i][olen]) { \
                                case '\0': var = !var; break; \
                                case 'y': case 'Y': case 't': case 'T': \
                                case '+': case '1': var = 1; break; \
                                case 'n': case 'N': case 'f': case 'F': \
                                case '-': case '0': var = 0; break; \
                                default: goto badopt; }
        int     force_open = 0;
        int     recover = 0;
        char    *curout = NULL;
        char    *prms = NULL;
        char    *binval = NULL;
        int     bincnt = 0;
        int     rval;
        int     i;
                                        /* global program name */
        progname = argv[0];
                                        /* feature check only? */
        strcat(RFeatureList, RCONTRIB_FEATURES);
        if (argc > 1 && !strcmp(argv[1], "-features"))
                return feature_status(argc-2, argv+2);
                                        /* initialize calcomp routines early */
        initfunc();
        calcontext(RCCONTEXT);
                                        /* option city */
        for (i = 1; i < argc; i++) {
                                                /* expand arguments */
                while ((rval = expandarg(&argc, &argv, i)) > 0)
                        ;
                if (rval < 0) {
                        sprintf(errmsg, "cannot expand '%s'", argv[i]);
                        error(SYSTEM, errmsg);
                }
                if (argv[i] == NULL || argv[i][0] != '-')
                        break;                  /* break from options */
                if (!strcmp(argv[i], "-version")) {
                        puts(VersionID);
                        quit(0);
                }
                if (!strcmp(argv[i], "-defaults") ||
                                !strcmp(argv[i], "-help")) {
                        override_options();
                        printdefaults();
                        quit(0);
                }
                rval = getrenderopt(argc-i, argv+i);
                if (rval >= 0) {
                        i += rval;
                        continue;
                }
                switch (argv[i][1]) {
                case 'n':                       /* number of processes */
                        check(2,"i");
                        nproc = atoi(argv[++i]);
                        if (nproc < 0 && (nproc += RadSimulManager::GetNCores()) <= 0)
                                nproc = 1;
                        break;
                case 'V':                       /* output contributions? */
                        check_bool(2,contrib);
                        break;
                case 'x':                       /* x resolution */
                        check(2,"i");
                        xres = atoi(argv[++i]);
                        break;
                case 'y':                       /* y resolution */
                        check(2,"i");
                        yres = atoi(argv[++i]);
                        break;
                case 'w':                       /* warnings on/off */
                        rval = (erract[WARNING].pf != NULL);
                        check_bool(2,rval);
                        if (rval) erract[WARNING].pf = wputs;
                        else erract[WARNING].pf = NULL;
                        break;
                case 'e':                       /* .cal expression */
                        check(2,"s");
                        scompile(argv[++i], NULL, 0);
                        break;
                case 'l':                       /* limit distance */
                        if (argv[i][2] != 'd')
                                goto badopt;
                        rval = myRCmanager.HasFlag(RTlimDist);
                        check_bool(3,rval);
                        myRCmanager.SetFlag(RTlimDist, rval);
                        break;
                case 'I':                       /* immed. irradiance */
                        rval = myRCmanager.HasFlag(RTimmIrrad);
                        check_bool(2,rval);
                        myRCmanager.SetFlag(RTimmIrrad, rval);
                        break;
                case 'f':                       /* .cal file or force or format */
                        if (!argv[i][2]) {
                                check(2,"s");
                                loadfunc(argv[++i]);
                                break;
                        }
                        if (argv[i][2] == 'o') {
                                check_bool(3,force_open);
                                break;
                        }
                        setformat(argv[i]+2);
                        myRCmanager.SetDataFormat(outfmt);
                        break;
                case 'o':                       /* output file */
                        check(2,"s");
                        curout = argv[++i];
                        break;
                case 'r':                       /* recover output */
                        check_bool(2,recover);
                        break;
                case 'p':                       /* parameter setting(s) */
                        check(2,"s");
                        set_eparams(prms = argv[++i]);
                        break;
                case 'c':                       /* sample count */
                        check(2,"i");
                        myRCmanager.accum = atoi(argv[++i]);
                        break;
                case 'b':                       /* bin expression/count */
                        if (argv[i][2] == 'n') {
                                check(3,"s");
                                bincnt = (int)(eval(argv[++i]) + .5);
                                break;
                        }
                        check(2,"s");
                        binval = argv[++i];
                        break;
                case 'm':                       /* modifier name */
                        check(2,"s");
                        myRCmanager.AddModifier(argv[++i], curout, prms, binval, bincnt);
                        break;
                case 'M':                       /* file of modifier names */
                        check(2,"s");
                        myRCmanager.AddModFile(argv[++i], curout, prms, binval, bincnt);
                        break;
                case 't':                       /* reporting interval */
                        check(2,"i");
                        report_intvl = atoi(argv[++i]);
                        break;
                default:
                        goto badopt;
                }
        }
        if (i != argc-1)
                error(USER, "expected single octree argument");

        override_options();             /* override some option settings */

        if (!myRCmanager.GetOutput())   // check that we have work to do
                error(USER, "missing required modifier argument");
                                        // get ready to rock...
        if (setspectrsamp(CNDX, WLPART) < 0)
                error(USER, "unsupported spectral sampling");
                                        /* set up signal handling */
        sigdie(SIGINT, "Interrupt");
#ifdef SIGHUP
        sigdie(SIGHUP, "Hangup");
#endif
        sigdie(SIGTERM, "Terminate");
#ifdef SIGPIPE
        sigdie(SIGPIPE, "Broken pipe");
#endif
#ifdef SIGALRM
        sigdie(SIGALRM, "Alarm clock");
#endif
#ifdef  SIGXCPU
        sigdie(SIGXCPU, "CPU limit exceeded");
        sigdie(SIGXFSZ, "File size exceeded");
#endif
#ifdef  NICE
        nice(NICE);                     /* lower priority */
#endif
                                        // load octree
        myRCmanager.LoadOctree(argv[argc-1]);
                                        // add to header
        myRCmanager.AddHeader(argc-1, argv);
                                        // prepare output files
        if (recover)
                myRCmanager.outOp = RCOrecover;
        else if (force_open)
                myRCmanager.outOp = RCOforce;
        else
                myRCmanager.outOp = RCOnew;
                                        // rval = # rows recovered
        rval = myRCmanager.PrepOutput();
                                        // check if recovered everything
        if (recover && rval >= myRCmanager.GetRowMax()) {
                error(WARNING, "nothing left to compute");
                quit(0);
        }                               // add processes as requested
        myRCmanager.SetThreadCount(nproc);

        rxcontrib(rval);                /* trace ray contributions (loop) */

        quit(0);        /* exit clean */

badopt:
        fprintf(stderr,
"Usage: %s [-V][-c count][-r][-e expr][-f source][-o ospec][-p p1=V1,p2=V2][-b binv][-bn N] {-m mod | -M file} [rtrace options] octree\n",
                        progname);
        sprintf(errmsg, "command line error at '%s'", argv[i]);
        error(USER, errmsg);
        return(1);      /* pro forma return */

#undef  check
#undef  check_bool
}


// skip specified number of bytes, return false if EOF
static bool
skipBytes(int n2skip)
{
        while (n2skip-- > 0)
                if (getchar() == EOF)
                        return false;
        return true;
}


// skip specified number of whitespace-separated words, return false if EOF
static bool
skipWords(int n2skip)
{
        int     c;

        while (n2skip-- > 0) {
                do {
                        c = getchar();
                } while (isspace(c));
                do {
                        if (c == EOF) return false;
                        c = getchar();
                } while (!isspace(c));
        }
        return true;
}


// read a bundle of myRCmanager.accum ray origins and directions
static bool
getRayBundle(FVECT *orig_dir = NULL)
{
        int     n2go = myRCmanager.accum;

        switch (inpfmt) {
        case 'a':                               // ASCII input
                if (!orig_dir)
                        return skipWords(6*n2go);
                while (n2go-- > 0) {
                        if (scanf(FVFORMAT, &orig_dir[0][0],
                                        &orig_dir[0][1], &orig_dir[0][2]) != 3)
                                return false;
                        if (scanf(FVFORMAT, &orig_dir[1][0],
                                        &orig_dir[1][1], &orig_dir[1][2]) != 3)
                                return false;
                        orig_dir += 2;
                }
                break;
        case 'f':                               // float input
                if (!orig_dir)
                        return skipBytes(6*sizeof(float)*n2go);
#ifdef SMLFLT
                if (getbinary(orig_dir, sizeof(FVECT), 2*n2go, stdin) != 2*n2go)
                        return false;
#else
                while (n2go-- > 0) {
                        float   fvecs[6];
                        if (getbinary(fvecs, sizeof(fvecs), 1, stdin) != 1)
                                return false;
                        for (int i = 6; i--; )
                                orig_dir[0][i] = fvecs[i];
                        orig_dir += 2;
                }
#endif
                break;
        case 'd':                               // double input
                if (!orig_dir)
                        return skipBytes(6*sizeof(double)*n2go);
#ifndef SMLFLT
                if (getbinary(orig_dir, sizeof(FVECT), 2*n2go, stdin) != 2*n2go)
                        return false;
#else
                while (n2go-- > 0) {
                        double  dvecs[6];
                        if (getbinary(dvecs, sizeof(dvecs), 1, stdin) != 1)
                                return false;
                        for (int i = 6; i--; )
                                orig_dir[0][i] = dvecs[i];
                        orig_dir += 2;
                }
#endif
                break;
        default:
                error(INTERNAL, "unsupported format in getRayBundle()");
                return false;
        }
        int     warned = 0;             // normalize directions
        n2go = myRCmanager.accum;
        while (n2go-- > 0) {
                orig_dir -= 2;
                if (normalize(orig_dir[1]) == 0)
                        if (!warned++)
                                error(WARNING, "zero ray direction on input");
        }
        return true;
}


// Run loop to load data, report progress, etc.
void
rxcontrib(const int rstart)
{
        const int       totRows = myRCmanager.GetRowMax();
        FVECT *         odarr = (FVECT *)emalloc(sizeof(FVECT)*2*myRCmanager.accum);
        time_t          tstart, last_report;
        int             r = 0;

        while (r < rstart) {            // skip input rays already done
                if (!getRayBundle())
                        goto readerr;
                r++;
        }
        if (report_intvl > 0) {         // set up reporting
                if (r > 0) {
                        sprintf(errmsg, "recovered %.2f%% of total\n",
                                        100.*r/totRows);
                        eputs(errmsg);
                }
                last_report = tstart = time(0);
        }
        while (r < totRows) {           // getting to work...
                time_t  tnow;
                if (!getRayBundle(odarr))
                        goto readerr;
                if (myRCmanager.ComputeRecord(odarr) <= 0)
                        return;         // error reported, hopefully...
                r++;
                if (report_intvl <= 0)
                        continue;
                if ((r < totRows) & ((tnow = time(0)) < last_report+report_intvl))
                        continue;
                sprintf(errmsg, "%.2f%% done after %.3f hours\n",
                                100.*r/totRows, (1./3600.)*(tnow - tstart));
                eputs(errmsg);
                last_report = tnow;
        }
        efree(odarr);
        return;
readerr:
        sprintf(errmsg, "unexpected EOF on standard input (record %d of %d)",
                        r, totRows);
        error(USER, errmsg);
}


void
wputs(                          /* warning output function */
        const char      *s
)
{
        if (!erract[WARNING].pf) return;
        int  lasterrno = errno;
        eputs(s);
        errno = lasterrno;
}


void
eputs(                          /* put string to stderr */
        const 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;
        }
}


/* Exit program */
void
quit(
        int  code
)
{
        if (!code && myRCmanager.Ready())       // clean up on normal exit
                code = myRCmanager.Cleanup();

        exit(code);
}
Revision:	2.5
Committed:	Wed Oct 30 19:53:37 2024 UTC (6 months ago) by greg
Branch:	MAIN
Changes since 2.4:	+2 -2 lines
Log Message:	fix(rxcontrib): error-check on ComputRecord() return was off
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.5	static const char RCSid[] = "$Id: rxcmain.cpp,v 2.4 2024/10/30 17:26:13 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* rxcmain.c - main for rxcontrib ray contribution tracer
6			*/
7
8			#include "copyright.h"
9
10			#include <signal.h>
11			#include <time.h>
12			#include <ctype.h>
13			#include "RcontribSimulManager.h"
14			#include "platform.h"
15			#include "func.h"
16
17			const char sigerr[NSIG]; / signal error messages */
18
19			int nproc = 1; /* number of processes requested */
20
21			int inpfmt = 'a'; /* input format */
22			int outfmt = 'f'; /* output format */
23
24			int report_intvl = 0; /* reporting interval (seconds) */
25
26			extern char * progname; // global argv[0]
27
28			RcontribSimulManager myRCmanager; // global rcontrib simulation manager
29
30			#define RCONTRIB_FEATURES "Multiprocessing\n" \
31			"Accumulation\nRecovery\n" \
32			"ImmediateIrradiance\n" \
33	greg	2.2	"ProgressReporting\nDistanceLimiting\n" \
34	greg	2.1	"InputFormats=a,f,d\nOutputFormats=f,d,c\n" \
35			"Outputs=V,W\n" \
36			"OutputCS=RGB,spec\n"
37
38			static void rxcontrib(const int rstart = 0);
39
40			static void
41			printdefaults(void) /* print default values to stdout */
42			{
43			printf("-c %-5d\t\t\t# accumulated rays per record\n", myRCmanager.accum);
44			printf("-V%c\t\t\t\t# output %s\n", contrib ? '+' : '-',
45			contrib ? "contributions" : "coefficients");
46	greg	2.2	if (myRCmanager.HasFlag(RTimmIrrad))
47	greg	2.1	printf("-I+\t\t\t\t# immediate irradiance on\n");
48			printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
49			if (xres > 0)
50			printf("-x %-9d\t\t\t# x resolution\n", xres);
51			printf("-y %-9d\t\t\t# y resolution\n", yres);
52	greg	2.2	printf(myRCmanager.HasFlag(RTlimDist) ?
53			"-ld+\t\t\t\t# limit distance on\n" :
54	greg	2.1	"-ld-\t\t\t\t# limit distance off\n");
55			printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
56			inpfmt, outfmt, formstr(inpfmt), formstr(outfmt));
57			if (report_intvl > 0)
58			printf("-t %-9d\t\t\t# time between reports\n", report_intvl);
59			printf(erract[WARNING].pf != NULL ?
60			"-w+\t\t\t\t# warning messages on\n" :
61			"-w-\t\t\t\t# warning messages off\n");
62			print_rdefaults();
63			}
64
65
66			static void
67			onsig( /* fatal signal */
68			int signo
69			)
70			{
71			static int gotsig = 0;
72
73			if (gotsig++) /* two signals and we're gone! */
74			_exit(signo);
75
76			#ifdef SIGALRM
77	greg	2.4	alarm(180); /* allow 3 minutes to clean up */
78	greg	2.1	signal(SIGALRM, SIG_DFL); /* make certain we do die */
79			#endif
80			eputs("signal - ");
81			eputs(sigerr[signo]);
82			eputs("\n");
83			quit(3);
84			}
85
86
87			static void
88			sigdie( /* set fatal signal */
89			int signo,
90			const char *msg
91			)
92			{
93			if (signal(signo, onsig) == SIG_IGN)
94			signal(signo, SIG_IGN);
95			sigerr[signo] = msg;
96			}
97
98			const char *
99			formstr(int f) // return format identifier
100			{
101			switch (f) {
102			case 'a': return("ascii");
103			case 'f': return("float");
104			case 'd': return("double");
105			case 'c': return(NCSAMP==3 ? COLRFMT : SPECFMT);
106			}
107			return("unknown");
108			}
109
110			/* set input/output format */
111			static void
112			setformat(const char *fmt)
113			{
114			switch (fmt[0]) {
115			case 'f':
116			case 'd':
117			SET_FILE_BINARY(stdin);
118			/* fall through */
119			case 'a':
120			inpfmt = fmt[0];
121			break;
122			default:
123			goto fmterr;
124			}
125			switch (fmt[1]) {
126			case '\0':
127			if (inpfmt == 'a')
128			goto fmterr;
129			outfmt = inpfmt;
130			return;
131			case 'f':
132			case 'd':
133			case 'c':
134			outfmt = fmt[1];
135			break;
136			default:
137			goto fmterr;
138			}
139			if (!fmt[2])
140			return;
141			fmterr:
142			sprintf(errmsg, "Unsupported i/o format: -f%s", fmt);
143			error(USER, errmsg);
144			}
145
146
147			/* Set overriding options */
148			static void
149			override_options(void)
150			{
151			shadthresh = 0;
152			ambssamp = 0;
153			ambacc = 0;
154			}
155
156
157			int
158			main(int argc, char *argv[])
159			{
160			#define check(ol,al) if (argv[i][ol] \|\| \
161			badarg(argc-i-1,argv+i+1,al)) \
162			goto badopt
163			#define check_bool(olen,var) switch (argv[i][olen]) { \
164			case '\0': var = !var; break; \
165			case 'y': case 'Y': case 't': case 'T': \
166			case '+': case '1': var = 1; break; \
167			case 'n': case 'N': case 'f': case 'F': \
168			case '-': case '0': var = 0; break; \
169			default: goto badopt; }
170			int force_open = 0;
171			int recover = 0;
172			char *curout = NULL;
173			char *prms = NULL;
174			char *binval = NULL;
175			int bincnt = 0;
176			int rval;
177			int i;
178			/* global program name */
179			progname = argv[0];
180			/* feature check only? */
181			strcat(RFeatureList, RCONTRIB_FEATURES);
182			if (argc > 1 && !strcmp(argv[1], "-features"))
183			return feature_status(argc-2, argv+2);
184			/* initialize calcomp routines early */
185			initfunc();
186			calcontext(RCCONTEXT);
187			/* option city */
188			for (i = 1; i < argc; i++) {
189			/* expand arguments */
190			while ((rval = expandarg(&argc, &argv, i)) > 0)
191			;
192			if (rval < 0) {
193			sprintf(errmsg, "cannot expand '%s'", argv[i]);
194			error(SYSTEM, errmsg);
195			}
196			if (argv[i] == NULL \|\| argv[i][0] != '-')
197			break; /* break from options */
198			if (!strcmp(argv[i], "-version")) {
199			puts(VersionID);
200			quit(0);
201			}
202			if (!strcmp(argv[i], "-defaults") \|\|
203			!strcmp(argv[i], "-help")) {
204			override_options();
205			printdefaults();
206			quit(0);
207			}
208			rval = getrenderopt(argc-i, argv+i);
209			if (rval >= 0) {
210			i += rval;
211			continue;
212			}
213			switch (argv[i][1]) {
214	greg	2.2	case 'n': /* number of processes */
215	greg	2.1	check(2,"i");
216			nproc = atoi(argv[++i]);
217			if (nproc < 0 && (nproc += RadSimulManager::GetNCores()) <= 0)
218			nproc = 1;
219			break;
220	greg	2.2	case 'V': /* output contributions? */
221	greg	2.1	check_bool(2,contrib);
222			break;
223			case 'x': /* x resolution */
224			check(2,"i");
225			xres = atoi(argv[++i]);
226			break;
227			case 'y': /* y resolution */
228			check(2,"i");
229			yres = atoi(argv[++i]);
230			break;
231	greg	2.2	case 'w': /* warnings on/off */
232	greg	2.1	rval = (erract[WARNING].pf != NULL);
233			check_bool(2,rval);
234			if (rval) erract[WARNING].pf = wputs;
235			else erract[WARNING].pf = NULL;
236			break;
237	greg	2.2	case 'e': /* .cal expression */
238	greg	2.1	check(2,"s");
239			scompile(argv[++i], NULL, 0);
240			break;
241			case 'l': /* limit distance */
242			if (argv[i][2] != 'd')
243			goto badopt;
244	greg	2.2	rval = myRCmanager.HasFlag(RTlimDist);
245			check_bool(3,rval);
246			myRCmanager.SetFlag(RTlimDist, rval);
247	greg	2.1	break;
248			case 'I': /* immed. irradiance */
249	greg	2.2	rval = myRCmanager.HasFlag(RTimmIrrad);
250			check_bool(2,rval);
251			myRCmanager.SetFlag(RTimmIrrad, rval);
252	greg	2.1	break;
253	greg	2.2	case 'f': /* .cal file or force or format */
254	greg	2.1	if (!argv[i][2]) {
255			check(2,"s");
256			loadfunc(argv[++i]);
257			break;
258			}
259			if (argv[i][2] == 'o') {
260			check_bool(3,force_open);
261			break;
262			}
263			setformat(argv[i]+2);
264			myRCmanager.SetDataFormat(outfmt);
265			break;
266	greg	2.2	case 'o': /* output file */
267	greg	2.1	check(2,"s");
268			curout = argv[++i];
269			break;
270			case 'r': /* recover output */
271			check_bool(2,recover);
272			break;
273			case 'p': /* parameter setting(s) */
274			check(2,"s");
275			set_eparams(prms = argv[++i]);
276			break;
277			case 'c': /* sample count */
278			check(2,"i");
279			myRCmanager.accum = atoi(argv[++i]);
280			break;
281			case 'b': /* bin expression/count */
282			if (argv[i][2] == 'n') {
283			check(3,"s");
284			bincnt = (int)(eval(argv[++i]) + .5);
285			break;
286			}
287			check(2,"s");
288			binval = argv[++i];
289			break;
290			case 'm': /* modifier name */
291			check(2,"s");
292			myRCmanager.AddModifier(argv[++i], curout, prms, binval, bincnt);
293			break;
294	greg	2.2	case 'M': /* file of modifier names */
295	greg	2.1	check(2,"s");
296			myRCmanager.AddModFile(argv[++i], curout, prms, binval, bincnt);
297			break;
298			case 't': /* reporting interval */
299			check(2,"i");
300			report_intvl = atoi(argv[++i]);
301			break;
302			default:
303			goto badopt;
304			}
305			}
306			if (i != argc-1)
307			error(USER, "expected single octree argument");
308	greg	2.2
309			override_options(); /* override some option settings */
310
311			if (!myRCmanager.GetOutput()) // check that we have work to do
312			error(USER, "missing required modifier argument");
313	greg	2.1	// get ready to rock...
314			if (setspectrsamp(CNDX, WLPART) < 0)
315			error(USER, "unsupported spectral sampling");
316			/* set up signal handling */
317			sigdie(SIGINT, "Interrupt");
318			#ifdef SIGHUP
319			sigdie(SIGHUP, "Hangup");
320			#endif
321			sigdie(SIGTERM, "Terminate");
322			#ifdef SIGPIPE
323			sigdie(SIGPIPE, "Broken pipe");
324			#endif
325			#ifdef SIGALRM
326			sigdie(SIGALRM, "Alarm clock");
327			#endif
328			#ifdef SIGXCPU
329			sigdie(SIGXCPU, "CPU limit exceeded");
330			sigdie(SIGXFSZ, "File size exceeded");
331			#endif
332			#ifdef NICE
333			nice(NICE); /* lower priority */
334			#endif
335			// load octree
336			myRCmanager.LoadOctree(argv[argc-1]);
337			// add to header
338			myRCmanager.AddHeader(argc-1, argv);
339			// prepare output files
340			if (recover)
341			myRCmanager.outOp = RCOrecover;
342			else if (force_open)
343			myRCmanager.outOp = RCOforce;
344			else
345			myRCmanager.outOp = RCOnew;
346			// rval = # rows recovered
347			rval = myRCmanager.PrepOutput();
348	greg	2.2	// check if recovered everything
349	greg	2.1	if (recover && rval >= myRCmanager.GetRowMax()) {
350			error(WARNING, "nothing left to compute");
351			quit(0);
352			} // add processes as requested
353			myRCmanager.SetThreadCount(nproc);
354
355			rxcontrib(rval); /* trace ray contributions (loop) */
356
357			quit(0); /* exit clean */
358
359			badopt:
360			fprintf(stderr,
361			"Usage: %s [-V][-c count][-r][-e expr][-f source][-o ospec][-p p1=V1,p2=V2][-b binv][-bn N] {-m mod \| -M file} [rtrace options] octree\n",
362			progname);
363			sprintf(errmsg, "command line error at '%s'", argv[i]);
364			error(USER, errmsg);
365			return(1); /* pro forma return */
366
367			#undef check
368			#undef check_bool
369			}
370
371
372			// skip specified number of bytes, return false if EOF
373			static bool
374			skipBytes(int n2skip)
375			{
376			while (n2skip-- > 0)
377			if (getchar() == EOF)
378			return false;
379			return true;
380			}
381
382
383			// skip specified number of whitespace-separated words, return false if EOF
384			static bool
385			skipWords(int n2skip)
386			{
387			int c;
388
389			while (n2skip-- > 0) {
390			do {
391			c = getchar();
392			} while (isspace(c));
393			do {
394			if (c == EOF) return false;
395			c = getchar();
396			} while (!isspace(c));
397			}
398			return true;
399			}
400
401
402			// read a bundle of myRCmanager.accum ray origins and directions
403			static bool
404			getRayBundle(FVECT *orig_dir = NULL)
405			{
406			int n2go = myRCmanager.accum;
407
408			switch (inpfmt) {
409			case 'a': // ASCII input
410			if (!orig_dir)
411			return skipWords(6*n2go);
412			while (n2go-- > 0) {
413			if (scanf(FVFORMAT, &orig_dir[0][0],
414			&orig_dir[0][1], &orig_dir[0][2]) != 3)
415			return false;
416			if (scanf(FVFORMAT, &orig_dir[1][0],
417			&orig_dir[1][1], &orig_dir[1][2]) != 3)
418			return false;
419			orig_dir += 2;
420			}
421			break;
422			case 'f': // float input
423			if (!orig_dir)
424			return skipBytes(6sizeof(float)n2go);
425			#ifdef SMLFLT
426			if (getbinary(orig_dir, sizeof(FVECT), 2n2go, stdin) != 2n2go)
427			return false;
428			#else
429			while (n2go-- > 0) {
430			float fvecs[6];
431			if (getbinary(fvecs, sizeof(fvecs), 1, stdin) != 1)
432			return false;
433			for (int i = 6; i--; )
434			orig_dir[0][i] = fvecs[i];
435			orig_dir += 2;
436			}
437			#endif
438			break;
439			case 'd': // double input
440			if (!orig_dir)
441			return skipBytes(6sizeof(double)n2go);
442			#ifndef SMLFLT
443			if (getbinary(orig_dir, sizeof(FVECT), 2n2go, stdin) != 2n2go)
444			return false;
445			#else
446			while (n2go-- > 0) {
447			double dvecs[6];
448			if (getbinary(dvecs, sizeof(dvecs), 1, stdin) != 1)
449			return false;
450			for (int i = 6; i--; )
451			orig_dir[0][i] = dvecs[i];
452			orig_dir += 2;
453			}
454			#endif
455			break;
456			default:
457			error(INTERNAL, "unsupported format in getRayBundle()");
458			return false;
459			}
460			int warned = 0; // normalize directions
461			n2go = myRCmanager.accum;
462			while (n2go-- > 0) {
463			orig_dir -= 2;
464			if (normalize(orig_dir[1]) == 0)
465			if (!warned++)
466			error(WARNING, "zero ray direction on input");
467			}
468			return true;
469			}
470
471
472			// Run loop to load data, report progress, etc.
473			void
474			rxcontrib(const int rstart)
475			{
476			const int totRows = myRCmanager.GetRowMax();
477			FVECT * odarr = (FVECT )emalloc(sizeof(FVECT)2*myRCmanager.accum);
478			time_t tstart, last_report;
479			int r = 0;
480
481			while (r < rstart) { // skip input rays already done
482			if (!getRayBundle())
483			goto readerr;
484			r++;
485			}
486			if (report_intvl > 0) { // set up reporting
487			if (r > 0) {
488			sprintf(errmsg, "recovered %.2f%% of total\n",
489			100.*r/totRows);
490			eputs(errmsg);
491			}
492			last_report = tstart = time(0);
493			}
494			while (r < totRows) { // getting to work...
495			time_t tnow;
496			if (!getRayBundle(odarr))
497			goto readerr;
498	greg	2.5	if (myRCmanager.ComputeRecord(odarr) <= 0)
499	greg	2.1	return; // error reported, hopefully...
500			r++;
501			if (report_intvl <= 0)
502			continue;
503			if ((r < totRows) & ((tnow = time(0)) < last_report+report_intvl))
504			continue;
505			sprintf(errmsg, "%.2f%% done after %.3f hours\n",
506			100.r/totRows, (1./3600.)(tnow - tstart));
507			eputs(errmsg);
508			last_report = tnow;
509			}
510			efree(odarr);
511			return;
512			readerr:
513			sprintf(errmsg, "unexpected EOF on standard input (record %d of %d)",
514			r, totRows);
515			error(USER, errmsg);
516			}
517
518
519			void
520			wputs( /* warning output function */
521			const char *s
522			)
523			{
524	greg	2.3	if (!erract[WARNING].pf) return;
525	greg	2.1	int lasterrno = errno;
526			eputs(s);
527			errno = lasterrno;
528			}
529
530
531			void
532			eputs( /* put string to stderr */
533			const char *s
534			)
535			{
536			static int midline = 0;
537
538			if (!*s)
539			return;
540			if (!midline++) {
541			fputs(progname, stderr);
542			fputs(": ", stderr);
543			}
544			fputs(s, stderr);
545			if (s[strlen(s)-1] == '\n') {
546			fflush(stderr);
547			midline = 0;
548			}
549			}
550
551
552	greg	2.2	/* Exit program */
553	greg	2.1	void
554			quit(
555			int code
556			)
557			{
558			if (!code && myRCmanager.Ready()) // clean up on normal exit
559			code = myRCmanager.Cleanup();
560
561			exit(code);
562			}