src/util/dcglare.c

#ifndef lint
static const char RCSid[] = "$Id: dcglare.c,v 2.8 2025/03/05 02:59:58 greg Exp $";
#endif
/*
 * Compute time-step glare using imageless DGP calculation method.
 *
 *      N. Jones
 */

/*
 * Copyright (c) 2017-2019 Nathaniel Jones
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#include <ctype.h>
#include "paths.h"
#include "platform.h"
#include "standard.h"
#include "cmatrix.h"
#include "resolu.h"
#include "cmglare.h"

/* Sum together a set of images and write result to fout */
static int
sum_images(const char *fspec, const CMATRIX *cv, FILE *fout)
{
        int     myDT = DTfromHeader;
        COLR    *scanline = NULL;
        CMATRIX *pmat = NULL;
        int     myXR=0, myYR=0;
        int     i, y;

        if (cv->ncols != 1)
                error(INTERNAL, "expected vector in sum_images()");
        for (i = 0; i < cv->nrows; i++) {
                const COLORV    *scv = cv_lval(cv,i);
                int             flat_file = 0;
                char            fname[1024];
                FILE            *fp;
                long            data_start;
                int             dt, xr, yr;
                COLORV          *psp;
                char            *err;
                                                        /* check for zero */
                if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) &&
                                (myDT != DTfromHeader) | (i < cv->nrows-1))
                        continue;
                                                        /* open next picture */
                sprintf(fname, fspec, i);
                if ((fp = fopen(fname, "rb")) == NULL) {
                        sprintf(errmsg, "cannot open picture '%s'", fname);
                        error(SYSTEM, errmsg);
                }
                dt = DTfromHeader;
                if ((err = cm_getheader(&dt, NULL, NULL, NULL, NULL, fp)) != NULL)
                        error(USER, err);
                if ((dt != DTrgbe) & (dt != DTxyze) ||
                                !fscnresolu(&xr, &yr, fp)) {
                        sprintf(errmsg, "file '%s' not a picture", fname);
                        error(USER, errmsg);
                }
                if (myDT == DTfromHeader) {             /* on first one */
                        myDT = dt;
                        myXR = xr; myYR = yr;
                        scanline = (COLR *)malloc(sizeof(COLR)*myXR);
                        if (scanline == NULL)
                                error(SYSTEM, "out of memory in sum_images()");
                        pmat = cm_alloc(myYR, myXR);
                        memset(pmat->cmem, 0, sizeof(COLOR)*myXR*myYR);
                                                        /* finish header */
                        fputformat(cm_fmt_id[myDT], fout);
                        fputc('\n', fout);
                        fflush(fout);
                } else if ((dt != myDT) | (xr != myXR) | (yr != myYR)) {
                        sprintf(errmsg, "picture '%s' format/size mismatch",
                                        fname);
                        error(USER, errmsg);
                }
                                                        /* flat file check */
                if ((data_start = ftell(fp)) > 0 && fseek(fp, 0L, SEEK_END) == 0) {
                        flat_file = (ftell(fp) >= data_start + sizeof(COLR)*xr*yr);
                        if (fseek(fp, data_start, SEEK_SET) < 0) {
                                sprintf(errmsg, "cannot seek on picture '%s'", fname);
                                error(SYSTEM, errmsg);
                        }
                }
                psp = pmat->cmem;
                for (y = 0; y < yr; y++) {              /* read it in */
                        COLOR   col;
                        int     x;
                        if (flat_file ? getbinary(scanline, sizeof(COLR), xr, fp) != xr :
                                        freadcolrs(scanline, xr, fp) < 0) {
                                sprintf(errmsg, "error reading picture '%s'",
                                                fname);
                                error(SYSTEM, errmsg);
                        }
                                                        /* sum in scanline */
                        for (x = 0; x < xr; x++, psp += 3) {
                                if (!scanline[x][EXP])
                                        continue;       /* skip zeroes */
                                colr_color(col, scanline[x]);
                                multcolor(col, scv);
                                addcolor(psp, col);
                        }
                }
                fclose(fp);                             /* done this picture */
        }
        free(scanline);
        i = cm_write(pmat, myDT, fout);                 /* write picture */
        cm_free(pmat);                                  /* free data */
        return(i);
}

/* check to see if a string contains a %d or %o specification */
static int
hasNumberFormat(const char *s)
{
        if (s == NULL)
                return(0);

        while (*s) {
                while (*s != '%')
                        if (!*s++)
                                return(0);
                if (*++s == '%') {              /* ignore "%%" */
                        ++s;
                        continue;
                }
                while (isdigit(*s))             /* field length */
                        ++s;
                                                /* field we'll use? */
                if ((*s == 'd') | (*s == 'i') | (*s == 'o') |
                                        (*s == 'x') | (*s == 'X'))
                        return(1);
        }
        return(0);                              /* didn't find one */
}

int
main(int argc, char *argv[])
{
        int             skyfmt = DTfromHeader;
        int             outfmt = DTascii;
        int             headout = 1;
        int             nsteps = 0;
        char            *ofspec = NULL;
        FILE            *ofp = stdout;
        CMATRIX         *cmtx;          /* component vector/matrix result */
        char            fnbuf[256];
        int             a, i;
#ifdef DC_GLARE
        char    *direct_path = NULL;
        char    *schedule_path = NULL;
        int             *occupancy = NULL;
        int             start_hour = 0;
        int             end_hour = 24;
        double  dgp_limit = -1;
        double  dgp_threshold = 2000;
        char    *view_path = NULL;
        FILE    *fp;
        float   *dgp_values = NULL;
        FVECT   vdir, vup;
        FVECT   *views = NULL;
        int             viewfmt = DTascii;

        vdir[0] = vdir[1] = vdir[2] = vup[0] = vup[1] = 0;
        vup[2] = 1;

        clock_t timer = clock();
#endif /* DC_GLARE */

        fixargv0(argv[0]);
                                        /* get options */
        for (a = 1; a < argc && argv[a][0] == '-'; a++)
                switch (argv[a][1]) {
                case 'n':
                        nsteps = atoi(argv[++a]);
                        if (nsteps < 0)
                                goto userr;
                        skyfmt = nsteps ? DTascii : DTfromHeader;
                        break;
                case 'h':
                        headout = !headout;
                        break;
                case 'i':
                        switch (argv[a][2]) {
                        case 'f':
                                skyfmt = DTfloat;
                                break;
                        case 'd':
                                skyfmt = DTdouble;
                                break;
                        case 'a':
                                skyfmt = DTascii;
                                break;
                        default:
                                goto userr;
                        }
                        break;
                case 'o':
                        switch (argv[a][2]) {
#ifndef DC_GLARE
                        case '\0':      /* output specification (not format) */
                                ofspec = argv[++a];
                                break;
#endif /* DC_GLARE */
                        case 'f':
                                outfmt = DTfloat;
                                break;
                        case 'd':
                                outfmt = DTdouble;
                                break;
                        case 'a':
                                outfmt = DTascii;
                                break;
                        default:
                                goto userr;
                        }
                        break;
#ifdef DC_GLARE
                case 's':
                        switch (argv[a][2]) {
                        case 'f':       /* occupancy schedule file */
                                schedule_path = argv[++a];
                                break;
                        case 's':       /* occupancy start hour */
                                start_hour = atoi(argv[++a]);
                                break;
                        case 'e':       /* occupancy end hour */
                                end_hour = atoi(argv[++a]);
                                break;
                        default:
                                goto userr;
                        }
                        break;
                case 'l':       /* perceptible glare threshold */
                        dgp_limit = atof(argv[++a]);
                        break;
                case 'b':       /* luminance threshold */
                        dgp_threshold = atof(argv[++a]);
                        break;
                case 'v':
                        switch (argv[a][2]) {
                        case 'd':       /* forward */
                                //check(3, "fff");
                                vdir[0] = atof(argv[++a]);
                                vdir[1] = atof(argv[++a]);
                                vdir[2] = atof(argv[++a]);
                                if (normalize(vdir) == 0.0) goto userr;
                                break;
                        case 'u':       /* up */
                                //check(3, "fff");
                                vup[0] = atof(argv[++a]);
                                vup[1] = atof(argv[++a]);
                                vup[2] = atof(argv[++a]);
                                if (normalize(vup) == 0.0) goto userr;
                                break;
                        case 'f':       /* view directions file */
                                //check(2, "s");
                                view_path = argv[++a];
                                break;
                        case 'i':
                                switch (argv[a][3]) {
                                case 'f':
                                        viewfmt = DTfloat;
                                        break;
                                case 'd':
                                        viewfmt = DTdouble;
                                        break;
                                case 'a':
                                        viewfmt = DTascii;
                                        break;
                                default:
                                        goto userr;
                                }
                        default:
                                goto userr;
                        }
                        break;
#endif /* DC_GLARE */
                default:
                        goto userr;
                }
#ifdef DC_GLARE
        if ((argc-a < 2) | (argc-a > 5))
                goto userr;
        /* single bounce daylight coefficients file */
        direct_path = argv[a++];
#else
        if ((argc-a < 1) | (argc-a > 4))
                goto userr;
#endif /* DC_GLARE */

        if (argc-a > 2) {                       /* VTDs expression */
                CMATRIX         *smtx, *Dmat, *Tmat, *imtx;
                const char      *ccp;
                                                /* get sky vector/matrix */
                smtx = cm_load(argv[a+3], 0, nsteps, skyfmt);
                nsteps = smtx->ncols;
                                                /* load BSDF */
                if (argv[a+1][0] != '!' &&
                                (ccp = strrchr(argv[a+1], '.')) != NULL &&
                                !strcasecmp(ccp+1, "XML"))
                        Tmat = cm_loadBTDF(argv[a+1]);
                else
                        Tmat = cm_load(argv[a+1], 0, 0, DTfromHeader);
                                                /* load Daylight matrix */
                Dmat = cm_load(argv[a+2], Tmat->ncols,
                                        smtx->nrows, DTfromHeader);
                                                /* multiply vector through */
                imtx = cm_multiply(Dmat, smtx);
                cm_free(Dmat); cm_free(smtx);
                cmtx = cm_multiply(Tmat, imtx);
                cm_free(Tmat); 
                cm_free(imtx);
        } else {                                /* sky vector/matrix only */
                //TIMER(timer, "read args");
                cmtx = cm_load(argv[a+1], 0, nsteps, skyfmt);
                nsteps = cmtx->ncols;
                //TIMER(timer, "load sky matrix");
        }
                                                /* prepare output stream */
        if ((ofspec != NULL) & (nsteps == 1) && hasNumberFormat(ofspec)) {
                sprintf(fnbuf, ofspec, 1);
                ofspec = fnbuf;
        }
        if (ofspec != NULL && !hasNumberFormat(ofspec)) {
                if ((ofp = fopen(ofspec, "w")) == NULL) {
                        fprintf(stderr, "%s: cannot open '%s' for output\n",
                                        progname, ofspec);
                        return(1);
                }
                ofspec = NULL;                  /* only need to open once */
        }
        if (hasNumberFormat(argv[a])) {         /* generating image(s) */
                if (ofspec == NULL) {
                        SET_FILE_BINARY(ofp);
                        newheader("RADIANCE", ofp);
                        printargs(argc, argv, ofp);
                        fputnow(ofp);
                }
                if (nsteps > 1)                 /* multiple output frames? */
                        for (i = 0; i < nsteps; i++) {
                                CMATRIX *cvec = cm_column(cmtx, i);
                                if (ofspec != NULL) {
                                        sprintf(fnbuf, ofspec, i);
                                        if ((ofp = fopen(fnbuf, "wb")) == NULL) {
                                                fprintf(stderr,
                                                        "%s: cannot open '%s' for output\n",
                                                        progname, fnbuf);
                                                return(1);
                                        }
                                        newheader("RADIANCE", ofp);
                                        printargs(argc, argv, ofp);
                                        fputnow(ofp);
                                }
                                fprintf(ofp, "FRAME=%d\n", i);
                                if (!sum_images(argv[a], cvec, ofp))
                                        return(1);
                                if (ofspec != NULL) {
                                        if (fclose(ofp) == EOF) {
                                                fprintf(stderr,
                                                        "%s: error writing to '%s'\n",
                                                        progname, fnbuf);
                                                return(1);
                                        }
                                        ofp = stdout;
                                }
                                cm_free(cvec);
                        }
                else if (!sum_images(argv[a], cmtx, ofp))
                        return(1);
        } else {                                /* generating vector/matrix */
                CMATRIX *Vmat = cm_load(argv[a], 0, cmtx->nrows, DTfromHeader);
                //TIMER(timer, "load view matrix");
                CMATRIX *rmtx = cm_multiply(Vmat, cmtx);
                //TIMER(timer, "multiply");
                cm_free(Vmat);
#ifdef DC_GLARE
                if (direct_path) { /* Do glare autonomy calculation */
                        /* Load occupancy schedule */
                        occupancy = (int*)malloc(nsteps * sizeof(int));
                        if (!occupancy) {
                                fprintf(stderr,
                                        "%s: out of memory for schedule\n",
                                        progname);
                                return(1);
                        }
                        if (schedule_path) {
                                if ((fp = fopen(schedule_path, "r")) == NULL) {
                                        fprintf(stderr,
                                                "%s: cannot open input file \"%s\"\n",
                                                progname, schedule_path);
                                        return(1);
                                }
                                if (cm_load_schedule(nsteps, occupancy, fp) < 0) return(1);
                        }
                        else {
                                for (i = 0; i < nsteps; i++) {
                                        /* Assume hourly spacing */
                                        int hour = i % 24;
                                        occupancy[i] = ((hour >= start_hour) & (hour < end_hour));
                                }
                        }
                        //TIMER(timer, "load occupancy schedule");

                        /* Load view directions */
                        if (view_path == NULL) {
                                if (vdir[0] == 0.0f && vdir[1] == 0.0f && vdir[2] == 0.0f) {
                                        fprintf(stderr,
                                                "%s: missing view direction\n",
                                                progname);
                                        return(1);
                                }
                        }
                        else {
                                if ((fp = fopen(view_path, "r")) == NULL) {
                                        fprintf(stderr,
                                                "%s: cannot open input file \"%s\"\n",
                                                progname, view_path);
                                        return(1);
                                }
                                if (viewfmt != DTascii)
                                        SET_FILE_BINARY(fp);
                                views = cm_load_views(rmtx->nrows, viewfmt, fp);
                                if (!views) return(1);
                                //TIMER(timer, "load views");
                        }

                        /* Calculate glare values */
                        Vmat = cm_load(direct_path, 0, cmtx->nrows, DTfromHeader);
                        //TIMER(timer, "load direct matrix");
                        dgp_values = cm_glare(Vmat, rmtx, cmtx, occupancy, dgp_limit, dgp_threshold, views, vdir, vup);
                        //TIMER(timer, "calculate dgp");
                        free(views);
                        cm_free(Vmat);

                        /* Check successful calculation */
                        if (!dgp_values) return(1);
                }
#endif /* DC_GLARE */
                if (ofspec != NULL) {           /* multiple vector files? */
                        const char      *wtype = (outfmt==DTascii) ? "w" : "wb";
                        for (i = 0; i < nsteps; i++) {
                                CMATRIX *rvec = cm_column(rmtx, i);
                                sprintf(fnbuf, ofspec, i);
                                if ((ofp = fopen(fnbuf, wtype)) == NULL) {
                                        fprintf(stderr,
                                        "%s: cannot open '%s' for output\n",
                                                        progname, fnbuf);
                                        return(1);
                                }
#ifdef getc_unlocked
                                flockfile(ofp);
#endif
                                if (headout) {  /* header output */
                                        newheader("RADIANCE", ofp);
                                        printargs(argc, argv, ofp);
                                        fputnow(ofp);
                                        fprintf(ofp, "FRAME=%d\n", i);
                                        fprintf(ofp, "NROWS=%d\n", rvec->nrows);
                                        fputs("NCOLS=1\nNCOMP=3\n", ofp);
                                        if ((outfmt == DTfloat) | (outfmt == DTdouble))
                                                fputendian(ofp);
                                        fputformat(cm_fmt_id[outfmt], ofp);
                                        fputc('\n', ofp);
                                }
                                cm_write(rvec, outfmt, ofp);
                                if (fclose(ofp) == EOF) {
                                        fprintf(stderr,
                                                "%s: error writing to '%s'\n",
                                                        progname, fnbuf);
                                        return(1);
                                }
                                ofp = stdout;
                                cm_free(rvec);
                        }
                } else {
#ifdef getc_unlocked
                        flockfile(ofp);
#endif
                        if (outfmt != DTascii)
                                SET_FILE_BINARY(ofp);
                        if (headout) {          /* header output */
                                newheader("RADIANCE", ofp);
                                printargs(argc, argv, ofp);
                                fputnow(ofp);
                                fprintf(ofp, "NROWS=%d\n", rmtx->nrows);
#ifdef DC_GLARE
                                fprintf(ofp, "NCOLS=%d\n", (!dgp_values || dgp_limit < 0) ? rmtx->ncols : 1);
                                fprintf(ofp, "NCOMP=%d\n", dgp_values ? 1 : 3);
#else
                                fprintf(ofp, "NCOLS=%d\n", rmtx->ncols);
                                fputs("NCOMP=3\n", ofp);
#endif /* DC_GLARE */
                                if ((outfmt == DTfloat) | (outfmt == DTdouble))
                                        fputendian(ofp);
                                fputformat(cm_fmt_id[outfmt], ofp);
                                fputc('\n', ofp);
                        }
#ifdef DC_GLARE
                        if (dgp_values) { /* Write glare autonomy */
                                cm_write_glare(dgp_values, rmtx->nrows, dgp_limit < 0 ? rmtx->ncols : 1, outfmt, ofp);
                                free(dgp_values);
                                //TIMER(timer, "write");
                        } 
                        else
#endif /* DC_GLARE */
                        cm_write(rmtx, outfmt, ofp);
                }
                cm_free(rmtx);
        }
        if (fflush(ofp) == EOF) {               /* final clean-up */
                fprintf(stderr, "%s: write error on output\n", progname);
                return(1);
        }
        cm_free(cmtx);
        return(0);
userr:
#ifdef DC_GLARE
        fprintf(stderr, "Usage: %s [-n nsteps][-i{f|d|h}][-o{f|d}][-l limit][-b threshold][{-sf occupancy|-ss start -se end}]{-vf views [-vi{f|d}]|-vd x y z}[-vu x y z] DCdirect DCtotal [skyf]\n",
                progname);
        fprintf(stderr, "   or: %s [-n nsteps][-i{f|d|h}][-o{f|d}][-l limit][-b threshold][{-sf occupancy|-ss start -se end}]{-vf views [-vi{f|d}]|-vd x y z}[-vu x y z] DCdirect Vspec Tbsdf Dmat.dat [skyf]\n",
                progname);
#else
        fprintf(stderr, "Usage: %s [-n nsteps][-o ospec][-i{f|d|h}][-o{f|d}] DCspec [skyf]\n",
                                progname);
        fprintf(stderr, "   or: %s [-n nsteps][-o ospec][-i{f|d|h}][-o{f|d}] Vspec Tbsdf Dmat.dat [skyf]\n",
                                progname);
#endif /* DC_GLARE */
        return(1);
}
Revision:	2.9
Committed:	Fri Jun 6 19:11:21 2025 UTC (9 hours, 50 minutes ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 2.8:	+3 -4 lines
Log Message:	refactor: Making use of printargs() more consistent with fixargv0()
#	User	Rev	Content
1	greg	2.8	#ifndef lint
2	greg	2.9	static const char RCSid[] = "$Id: dcglare.c,v 2.8 2025/03/05 02:59:58 greg Exp $";
3	greg	2.8	#endif
4	greg	2.1	/*
5			* Compute time-step glare using imageless DGP calculation method.
6			*
7			* N. Jones
8			*/
9
10			/*
11			* Copyright (c) 2017-2019 Nathaniel Jones
12			*
13			* Permission is hereby granted, free of charge, to any person obtaining a copy
14			* of this software and associated documentation files (the "Software"), to deal
15			* in the Software without restriction, including without limitation the rights
16			* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
17			* copies of the Software, and to permit persons to whom the Software is
18			* furnished to do so, subject to the following conditions:
19			*
20			* The above copyright notice and this permission notice shall be included in all
21			* copies or substantial portions of the Software.
22			*
23			* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24			* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25			* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
26			* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27			* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
28			* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
29			* SOFTWARE.
30			*/
31
32			#include <ctype.h>
33	greg	2.9	#include "paths.h"
34	greg	2.1	#include "platform.h"
35			#include "standard.h"
36			#include "cmatrix.h"
37			#include "resolu.h"
38			#include "cmglare.h"
39
40			/* Sum together a set of images and write result to fout */
41			static int
42			sum_images(const char fspec, const CMATRIX cv, FILE *fout)
43			{
44			int myDT = DTfromHeader;
45			COLR *scanline = NULL;
46			CMATRIX *pmat = NULL;
47			int myXR=0, myYR=0;
48			int i, y;
49
50			if (cv->ncols != 1)
51			error(INTERNAL, "expected vector in sum_images()");
52			for (i = 0; i < cv->nrows; i++) {
53			const COLORV *scv = cv_lval(cv,i);
54			int flat_file = 0;
55			char fname[1024];
56			FILE *fp;
57			long data_start;
58			int dt, xr, yr;
59			COLORV *psp;
60			char *err;
61			/* check for zero */
62			if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) &&
63			(myDT != DTfromHeader) \| (i < cv->nrows-1))
64			continue;
65			/* open next picture */
66			sprintf(fname, fspec, i);
67			if ((fp = fopen(fname, "rb")) == NULL) {
68			sprintf(errmsg, "cannot open picture '%s'", fname);
69			error(SYSTEM, errmsg);
70			}
71			dt = DTfromHeader;
72	greg	2.3	if ((err = cm_getheader(&dt, NULL, NULL, NULL, NULL, fp)) != NULL)
73	greg	2.1	error(USER, err);
74			if ((dt != DTrgbe) & (dt != DTxyze) \|\|
75			!fscnresolu(&xr, &yr, fp)) {
76			sprintf(errmsg, "file '%s' not a picture", fname);
77			error(USER, errmsg);
78			}
79			if (myDT == DTfromHeader) { /* on first one */
80			myDT = dt;
81			myXR = xr; myYR = yr;
82			scanline = (COLR )malloc(sizeof(COLR)myXR);
83			if (scanline == NULL)
84			error(SYSTEM, "out of memory in sum_images()");
85			pmat = cm_alloc(myYR, myXR);
86			memset(pmat->cmem, 0, sizeof(COLOR)myXRmyYR);
87			/* finish header */
88	greg	2.5	fputformat(cm_fmt_id[myDT], fout);
89	greg	2.1	fputc('\n', fout);
90			fflush(fout);
91			} else if ((dt != myDT) \| (xr != myXR) \| (yr != myYR)) {
92			sprintf(errmsg, "picture '%s' format/size mismatch",
93			fname);
94			error(USER, errmsg);
95			}
96			/* flat file check */
97			if ((data_start = ftell(fp)) > 0 && fseek(fp, 0L, SEEK_END) == 0) {
98	greg	2.7	flat_file = (ftell(fp) >= data_start + sizeof(COLR)xryr);
99	greg	2.1	if (fseek(fp, data_start, SEEK_SET) < 0) {
100			sprintf(errmsg, "cannot seek on picture '%s'", fname);
101			error(SYSTEM, errmsg);
102			}
103			}
104			psp = pmat->cmem;
105			for (y = 0; y < yr; y++) { /* read it in */
106			COLOR col;
107			int x;
108			if (flat_file ? getbinary(scanline, sizeof(COLR), xr, fp) != xr :
109			freadcolrs(scanline, xr, fp) < 0) {
110			sprintf(errmsg, "error reading picture '%s'",
111			fname);
112			error(SYSTEM, errmsg);
113			}
114			/* sum in scanline */
115			for (x = 0; x < xr; x++, psp += 3) {
116			if (!scanline[x][EXP])
117			continue; /* skip zeroes */
118			colr_color(col, scanline[x]);
119			multcolor(col, scv);
120			addcolor(psp, col);
121			}
122			}
123			fclose(fp); /* done this picture */
124			}
125			free(scanline);
126			i = cm_write(pmat, myDT, fout); /* write picture */
127			cm_free(pmat); /* free data */
128			return(i);
129			}
130
131			/* check to see if a string contains a %d or %o specification */
132			static int
133			hasNumberFormat(const char *s)
134			{
135			if (s == NULL)
136			return(0);
137
138			while (*s) {
139			while (*s != '%')
140			if (!*s++)
141			return(0);
142			if (++s == '%') { / ignore "%%" */
143			++s;
144			continue;
145			}
146			while (isdigit(s)) / field length */
147			++s;
148			/* field we'll use? */
149			if ((s == 'd') \| (s == 'i') \| (*s == 'o') \|
150			(s == 'x') \| (s == 'X'))
151			return(1);
152			}
153			return(0); /* didn't find one */
154			}
155
156			int
157			main(int argc, char *argv[])
158			{
159			int skyfmt = DTfromHeader;
160			int outfmt = DTascii;
161			int headout = 1;
162			int nsteps = 0;
163			char *ofspec = NULL;
164			FILE *ofp = stdout;
165			CMATRIX cmtx; / component vector/matrix result */
166			char fnbuf[256];
167			int a, i;
168			#ifdef DC_GLARE
169			char *direct_path = NULL;
170			char *schedule_path = NULL;
171			int *occupancy = NULL;
172			int start_hour = 0;
173			int end_hour = 24;
174			double dgp_limit = -1;
175			double dgp_threshold = 2000;
176			char *view_path = NULL;
177			FILE *fp;
178			float *dgp_values = NULL;
179			FVECT vdir, vup;
180			FVECT *views = NULL;
181			int viewfmt = DTascii;
182
183			vdir[0] = vdir[1] = vdir[2] = vup[0] = vup[1] = 0;
184			vup[2] = 1;
185
186			clock_t timer = clock();
187			#endif /* DC_GLARE */
188
189	greg	2.9	fixargv0(argv[0]);
190	greg	2.1	/* get options */
191			for (a = 1; a < argc && argv[a][0] == '-'; a++)
192			switch (argv[a][1]) {
193			case 'n':
194			nsteps = atoi(argv[++a]);
195			if (nsteps < 0)
196			goto userr;
197			skyfmt = nsteps ? DTascii : DTfromHeader;
198			break;
199			case 'h':
200			headout = !headout;
201			break;
202			case 'i':
203			switch (argv[a][2]) {
204			case 'f':
205			skyfmt = DTfloat;
206			break;
207			case 'd':
208			skyfmt = DTdouble;
209			break;
210			case 'a':
211			skyfmt = DTascii;
212			break;
213			default:
214			goto userr;
215			}
216			break;
217			case 'o':
218			switch (argv[a][2]) {
219			#ifndef DC_GLARE
220			case '\0': /* output specification (not format) */
221			ofspec = argv[++a];
222			break;
223			#endif /* DC_GLARE */
224			case 'f':
225			outfmt = DTfloat;
226			break;
227			case 'd':
228			outfmt = DTdouble;
229			break;
230			case 'a':
231			outfmt = DTascii;
232			break;
233			default:
234			goto userr;
235			}
236			break;
237			#ifdef DC_GLARE
238			case 's':
239			switch (argv[a][2]) {
240			case 'f': /* occupancy schedule file */
241			schedule_path = argv[++a];
242			break;
243			case 's': /* occupancy start hour */
244			start_hour = atoi(argv[++a]);
245			break;
246			case 'e': /* occupancy end hour */
247			end_hour = atoi(argv[++a]);
248			break;
249			default:
250			goto userr;
251			}
252			break;
253			case 'l': /* perceptible glare threshold */
254			dgp_limit = atof(argv[++a]);
255			break;
256			case 'b': /* luminance threshold */
257			dgp_threshold = atof(argv[++a]);
258			break;
259			case 'v':
260			switch (argv[a][2]) {
261			case 'd': /* forward */
262			//check(3, "fff");
263			vdir[0] = atof(argv[++a]);
264			vdir[1] = atof(argv[++a]);
265			vdir[2] = atof(argv[++a]);
266			if (normalize(vdir) == 0.0) goto userr;
267			break;
268			case 'u': /* up */
269			//check(3, "fff");
270			vup[0] = atof(argv[++a]);
271			vup[1] = atof(argv[++a]);
272			vup[2] = atof(argv[++a]);
273			if (normalize(vup) == 0.0) goto userr;
274			break;
275			case 'f': /* view directions file */
276			//check(2, "s");
277			view_path = argv[++a];
278			break;
279			case 'i':
280			switch (argv[a][3]) {
281			case 'f':
282			viewfmt = DTfloat;
283			break;
284			case 'd':
285			viewfmt = DTdouble;
286			break;
287			case 'a':
288			viewfmt = DTascii;
289			break;
290			default:
291			goto userr;
292			}
293			default:
294			goto userr;
295			}
296			break;
297			#endif /* DC_GLARE */
298			default:
299			goto userr;
300			}
301			#ifdef DC_GLARE
302			if ((argc-a < 2) \| (argc-a > 5))
303			goto userr;
304			/* single bounce daylight coefficients file */
305	greg	2.4	direct_path = argv[a++];
306	greg	2.1	#else
307			if ((argc-a < 1) \| (argc-a > 4))
308			goto userr;
309			#endif /* DC_GLARE */
310
311			if (argc-a > 2) { /* VTDs expression */
312			CMATRIX smtx, Dmat, Tmat, imtx;
313			const char *ccp;
314			/* get sky vector/matrix */
315			smtx = cm_load(argv[a+3], 0, nsteps, skyfmt);
316			nsteps = smtx->ncols;
317			/* load BSDF */
318			if (argv[a+1][0] != '!' &&
319			(ccp = strrchr(argv[a+1], '.')) != NULL &&
320			!strcasecmp(ccp+1, "XML"))
321			Tmat = cm_loadBTDF(argv[a+1]);
322			else
323			Tmat = cm_load(argv[a+1], 0, 0, DTfromHeader);
324			/* load Daylight matrix */
325			Dmat = cm_load(argv[a+2], Tmat->ncols,
326			smtx->nrows, DTfromHeader);
327			/* multiply vector through */
328			imtx = cm_multiply(Dmat, smtx);
329			cm_free(Dmat); cm_free(smtx);
330			cmtx = cm_multiply(Tmat, imtx);
331			cm_free(Tmat);
332			cm_free(imtx);
333			} else { /* sky vector/matrix only */
334			//TIMER(timer, "read args");
335			cmtx = cm_load(argv[a+1], 0, nsteps, skyfmt);
336			nsteps = cmtx->ncols;
337			//TIMER(timer, "load sky matrix");
338			}
339			/* prepare output stream */
340			if ((ofspec != NULL) & (nsteps == 1) && hasNumberFormat(ofspec)) {
341			sprintf(fnbuf, ofspec, 1);
342			ofspec = fnbuf;
343			}
344			if (ofspec != NULL && !hasNumberFormat(ofspec)) {
345			if ((ofp = fopen(ofspec, "w")) == NULL) {
346			fprintf(stderr, "%s: cannot open '%s' for output\n",
347			progname, ofspec);
348			return(1);
349			}
350			ofspec = NULL; /* only need to open once */
351			}
352			if (hasNumberFormat(argv[a])) { /* generating image(s) */
353			if (ofspec == NULL) {
354			SET_FILE_BINARY(ofp);
355			newheader("RADIANCE", ofp);
356			printargs(argc, argv, ofp);
357			fputnow(ofp);
358			}
359			if (nsteps > 1) /* multiple output frames? */
360			for (i = 0; i < nsteps; i++) {
361			CMATRIX *cvec = cm_column(cmtx, i);
362			if (ofspec != NULL) {
363			sprintf(fnbuf, ofspec, i);
364			if ((ofp = fopen(fnbuf, "wb")) == NULL) {
365			fprintf(stderr,
366			"%s: cannot open '%s' for output\n",
367			progname, fnbuf);
368			return(1);
369			}
370			newheader("RADIANCE", ofp);
371			printargs(argc, argv, ofp);
372			fputnow(ofp);
373			}
374			fprintf(ofp, "FRAME=%d\n", i);
375			if (!sum_images(argv[a], cvec, ofp))
376			return(1);
377			if (ofspec != NULL) {
378			if (fclose(ofp) == EOF) {
379			fprintf(stderr,
380			"%s: error writing to '%s'\n",
381			progname, fnbuf);
382			return(1);
383			}
384			ofp = stdout;
385			}
386			cm_free(cvec);
387			}
388			else if (!sum_images(argv[a], cmtx, ofp))
389			return(1);
390			} else { /* generating vector/matrix */
391			CMATRIX *Vmat = cm_load(argv[a], 0, cmtx->nrows, DTfromHeader);
392			//TIMER(timer, "load view matrix");
393			CMATRIX *rmtx = cm_multiply(Vmat, cmtx);
394			//TIMER(timer, "multiply");
395			cm_free(Vmat);
396			#ifdef DC_GLARE
397			if (direct_path) { /* Do glare autonomy calculation */
398			/* Load occupancy schedule */
399			occupancy = (int)malloc(nsteps sizeof(int));
400			if (!occupancy) {
401			fprintf(stderr,
402			"%s: out of memory for schedule\n",
403			progname);
404			return(1);
405			}
406			if (schedule_path) {
407			if ((fp = fopen(schedule_path, "r")) == NULL) {
408			fprintf(stderr,
409			"%s: cannot open input file \"%s\"\n",
410			progname, schedule_path);
411			return(1);
412			}
413			if (cm_load_schedule(nsteps, occupancy, fp) < 0) return(1);
414			}
415			else {
416			for (i = 0; i < nsteps; i++) {
417			/* Assume hourly spacing */
418			int hour = i % 24;
419			occupancy[i] = ((hour >= start_hour) & (hour < end_hour));
420			}
421			}
422			//TIMER(timer, "load occupancy schedule");
423
424			/* Load view directions */
425			if (view_path == NULL) {
426			if (vdir[0] == 0.0f && vdir[1] == 0.0f && vdir[2] == 0.0f) {
427			fprintf(stderr,
428			"%s: missing view direction\n",
429			progname);
430			return(1);
431			}
432			}
433			else {
434			if ((fp = fopen(view_path, "r")) == NULL) {
435			fprintf(stderr,
436			"%s: cannot open input file \"%s\"\n",
437			progname, view_path);
438			return(1);
439			}
440			if (viewfmt != DTascii)
441			SET_FILE_BINARY(fp);
442			views = cm_load_views(rmtx->nrows, viewfmt, fp);
443			if (!views) return(1);
444			//TIMER(timer, "load views");
445			}
446
447			/* Calculate glare values */
448			Vmat = cm_load(direct_path, 0, cmtx->nrows, DTfromHeader);
449			//TIMER(timer, "load direct matrix");
450			dgp_values = cm_glare(Vmat, rmtx, cmtx, occupancy, dgp_limit, dgp_threshold, views, vdir, vup);
451			//TIMER(timer, "calculate dgp");
452			free(views);
453			cm_free(Vmat);
454
455			/* Check successful calculation */
456			if (!dgp_values) return(1);
457			}
458			#endif /* DC_GLARE */
459			if (ofspec != NULL) { /* multiple vector files? */
460			const char *wtype = (outfmt==DTascii) ? "w" : "wb";
461			for (i = 0; i < nsteps; i++) {
462			CMATRIX *rvec = cm_column(rmtx, i);
463			sprintf(fnbuf, ofspec, i);
464			if ((ofp = fopen(fnbuf, wtype)) == NULL) {
465			fprintf(stderr,
466			"%s: cannot open '%s' for output\n",
467			progname, fnbuf);
468			return(1);
469			}
470			#ifdef getc_unlocked
471			flockfile(ofp);
472			#endif
473			if (headout) { /* header output */
474			newheader("RADIANCE", ofp);
475			printargs(argc, argv, ofp);
476			fputnow(ofp);
477			fprintf(ofp, "FRAME=%d\n", i);
478			fprintf(ofp, "NROWS=%d\n", rvec->nrows);
479			fputs("NCOLS=1\nNCOMP=3\n", ofp);
480	greg	2.6	if ((outfmt == DTfloat) \| (outfmt == DTdouble))
481	greg	2.1	fputendian(ofp);
482	greg	2.5	fputformat(cm_fmt_id[outfmt], ofp);
483	greg	2.1	fputc('\n', ofp);
484			}
485			cm_write(rvec, outfmt, ofp);
486			if (fclose(ofp) == EOF) {
487			fprintf(stderr,
488			"%s: error writing to '%s'\n",
489			progname, fnbuf);
490			return(1);
491			}
492			ofp = stdout;
493			cm_free(rvec);
494			}
495			} else {
496			#ifdef getc_unlocked
497			flockfile(ofp);
498			#endif
499			if (outfmt != DTascii)
500			SET_FILE_BINARY(ofp);
501			if (headout) { /* header output */
502			newheader("RADIANCE", ofp);
503			printargs(argc, argv, ofp);
504			fputnow(ofp);
505			fprintf(ofp, "NROWS=%d\n", rmtx->nrows);
506			#ifdef DC_GLARE
507			fprintf(ofp, "NCOLS=%d\n", (!dgp_values \|\| dgp_limit < 0) ? rmtx->ncols : 1);
508			fprintf(ofp, "NCOMP=%d\n", dgp_values ? 1 : 3);
509			#else
510			fprintf(ofp, "NCOLS=%d\n", rmtx->ncols);
511			fputs("NCOMP=3\n", ofp);
512			#endif /* DC_GLARE */
513	greg	2.6	if ((outfmt == DTfloat) \| (outfmt == DTdouble))
514	greg	2.1	fputendian(ofp);
515	greg	2.5	fputformat(cm_fmt_id[outfmt], ofp);
516	greg	2.1	fputc('\n', ofp);
517			}
518			#ifdef DC_GLARE
519			if (dgp_values) { /* Write glare autonomy */
520			cm_write_glare(dgp_values, rmtx->nrows, dgp_limit < 0 ? rmtx->ncols : 1, outfmt, ofp);
521			free(dgp_values);
522			//TIMER(timer, "write");
523			}
524			else
525			#endif /* DC_GLARE */
526			cm_write(rmtx, outfmt, ofp);
527			}
528			cm_free(rmtx);
529			}
530			if (fflush(ofp) == EOF) { /* final clean-up */
531			fprintf(stderr, "%s: write error on output\n", progname);
532			return(1);
533			}
534			cm_free(cmtx);
535			return(0);
536			userr:
537			#ifdef DC_GLARE
538			fprintf(stderr, "Usage: %s [-n nsteps][-i{f\|d\|h}][-o{f\|d}][-l limit][-b threshold][{-sf occupancy\|-ss start -se end}]{-vf views [-vi{f\|d}]\|-vd x y z}[-vu x y z] DCdirect DCtotal [skyf]\n",
539			progname);
540			fprintf(stderr, " or: %s [-n nsteps][-i{f\|d\|h}][-o{f\|d}][-l limit][-b threshold][{-sf occupancy\|-ss start -se end}]{-vf views [-vi{f\|d}]\|-vd x y z}[-vu x y z] DCdirect Vspec Tbsdf Dmat.dat [skyf]\n",
541			progname);
542			#else
543			fprintf(stderr, "Usage: %s [-n nsteps][-o ospec][-i{f\|d\|h}][-o{f\|d}] DCspec [skyf]\n",
544			progname);
545			fprintf(stderr, " or: %s [-n nsteps][-o ospec][-i{f\|d\|h}][-o{f\|d}] Vspec Tbsdf Dmat.dat [skyf]\n",
546			progname);
547			#endif /* DC_GLARE */
548			return(1);
549			}