src/util/dcglare.c

#ifndef lint
static const char RCSid[] = "$Id$";
#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 "platform.h"
#include "standard.h"
#include "cmatrix.h"
#include "resolu.h"
#include "cmglare.h"

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

/* 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 */

        progname = 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:	2.8
Committed:	Wed Mar 5 02:59:58 2025 UTC (8 weeks, 3 days ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	HEAD
Changes since 2.7:	+3 -0 lines
Log Message:	chore: Added missing RCSid
#	User	Rev	Content
1	greg	2.8	#ifndef lint
2			static const char RCSid[] = "$Id$";
3			#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			#include "platform.h"
34			#include "standard.h"
35			#include "cmatrix.h"
36			#include "resolu.h"
37			#include "cmglare.h"
38
39			char progname; / global argv[0] */
40
41			/* Sum together a set of images and write result to fout */
42			static int
43			sum_images(const char fspec, const CMATRIX cv, FILE *fout)
44			{
45			int myDT = DTfromHeader;
46			COLR *scanline = NULL;
47			CMATRIX *pmat = NULL;
48			int myXR=0, myYR=0;
49			int i, y;
50
51			if (cv->ncols != 1)
52			error(INTERNAL, "expected vector in sum_images()");
53			for (i = 0; i < cv->nrows; i++) {
54			const COLORV *scv = cv_lval(cv,i);
55			int flat_file = 0;
56			char fname[1024];
57			FILE *fp;
58			long data_start;
59			int dt, xr, yr;
60			COLORV *psp;
61			char *err;
62			/* check for zero */
63			if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) &&
64			(myDT != DTfromHeader) \| (i < cv->nrows-1))
65			continue;
66			/* open next picture */
67			sprintf(fname, fspec, i);
68			if ((fp = fopen(fname, "rb")) == NULL) {
69			sprintf(errmsg, "cannot open picture '%s'", fname);
70			error(SYSTEM, errmsg);
71			}
72			dt = DTfromHeader;
73	greg	2.3	if ((err = cm_getheader(&dt, NULL, NULL, NULL, NULL, fp)) != NULL)
74	greg	2.1	error(USER, err);
75			if ((dt != DTrgbe) & (dt != DTxyze) \|\|
76			!fscnresolu(&xr, &yr, fp)) {
77			sprintf(errmsg, "file '%s' not a picture", fname);
78			error(USER, errmsg);
79			}
80			if (myDT == DTfromHeader) { /* on first one */
81			myDT = dt;
82			myXR = xr; myYR = yr;
83			scanline = (COLR )malloc(sizeof(COLR)myXR);
84			if (scanline == NULL)
85			error(SYSTEM, "out of memory in sum_images()");
86			pmat = cm_alloc(myYR, myXR);
87			memset(pmat->cmem, 0, sizeof(COLOR)myXRmyYR);
88			/* finish header */
89	greg	2.5	fputformat(cm_fmt_id[myDT], fout);
90	greg	2.1	fputc('\n', fout);
91			fflush(fout);
92			} else if ((dt != myDT) \| (xr != myXR) \| (yr != myYR)) {
93			sprintf(errmsg, "picture '%s' format/size mismatch",
94			fname);
95			error(USER, errmsg);
96			}
97			/* flat file check */
98			if ((data_start = ftell(fp)) > 0 && fseek(fp, 0L, SEEK_END) == 0) {
99	greg	2.7	flat_file = (ftell(fp) >= data_start + sizeof(COLR)xryr);
100	greg	2.1	if (fseek(fp, data_start, SEEK_SET) < 0) {
101			sprintf(errmsg, "cannot seek on picture '%s'", fname);
102			error(SYSTEM, errmsg);
103			}
104			}
105			psp = pmat->cmem;
106			for (y = 0; y < yr; y++) { /* read it in */
107			COLOR col;
108			int x;
109			if (flat_file ? getbinary(scanline, sizeof(COLR), xr, fp) != xr :
110			freadcolrs(scanline, xr, fp) < 0) {
111			sprintf(errmsg, "error reading picture '%s'",
112			fname);
113			error(SYSTEM, errmsg);
114			}
115			/* sum in scanline */
116			for (x = 0; x < xr; x++, psp += 3) {
117			if (!scanline[x][EXP])
118			continue; /* skip zeroes */
119			colr_color(col, scanline[x]);
120			multcolor(col, scv);
121			addcolor(psp, col);
122			}
123			}
124			fclose(fp); /* done this picture */
125			}
126			free(scanline);
127			i = cm_write(pmat, myDT, fout); /* write picture */
128			cm_free(pmat); /* free data */
129			return(i);
130			}
131
132			/* check to see if a string contains a %d or %o specification */
133			static int
134			hasNumberFormat(const char *s)
135			{
136			if (s == NULL)
137			return(0);
138
139			while (*s) {
140			while (*s != '%')
141			if (!*s++)
142			return(0);
143			if (++s == '%') { / ignore "%%" */
144			++s;
145			continue;
146			}
147			while (isdigit(s)) / field length */
148			++s;
149			/* field we'll use? */
150			if ((s == 'd') \| (s == 'i') \| (*s == 'o') \|
151			(s == 'x') \| (s == 'X'))
152			return(1);
153			}
154			return(0); /* didn't find one */
155			}
156
157			int
158			main(int argc, char *argv[])
159			{
160			int skyfmt = DTfromHeader;
161			int outfmt = DTascii;
162			int headout = 1;
163			int nsteps = 0;
164			char *ofspec = NULL;
165			FILE *ofp = stdout;
166			CMATRIX cmtx; / component vector/matrix result */
167			char fnbuf[256];
168			int a, i;
169			#ifdef DC_GLARE
170			char *direct_path = NULL;
171			char *schedule_path = NULL;
172			int *occupancy = NULL;
173			int start_hour = 0;
174			int end_hour = 24;
175			double dgp_limit = -1;
176			double dgp_threshold = 2000;
177			char *view_path = NULL;
178			FILE *fp;
179			float *dgp_values = NULL;
180			FVECT vdir, vup;
181			FVECT *views = NULL;
182			int viewfmt = DTascii;
183
184			vdir[0] = vdir[1] = vdir[2] = vup[0] = vup[1] = 0;
185			vup[2] = 1;
186
187			clock_t timer = clock();
188			#endif /* DC_GLARE */
189
190			progname = argv[0];
191			/* get options */
192			for (a = 1; a < argc && argv[a][0] == '-'; a++)
193			switch (argv[a][1]) {
194			case 'n':
195			nsteps = atoi(argv[++a]);
196			if (nsteps < 0)
197			goto userr;
198			skyfmt = nsteps ? DTascii : DTfromHeader;
199			break;
200			case 'h':
201			headout = !headout;
202			break;
203			case 'i':
204			switch (argv[a][2]) {
205			case 'f':
206			skyfmt = DTfloat;
207			break;
208			case 'd':
209			skyfmt = DTdouble;
210			break;
211			case 'a':
212			skyfmt = DTascii;
213			break;
214			default:
215			goto userr;
216			}
217			break;
218			case 'o':
219			switch (argv[a][2]) {
220			#ifndef DC_GLARE
221			case '\0': /* output specification (not format) */
222			ofspec = argv[++a];
223			break;
224			#endif /* DC_GLARE */
225			case 'f':
226			outfmt = DTfloat;
227			break;
228			case 'd':
229			outfmt = DTdouble;
230			break;
231			case 'a':
232			outfmt = DTascii;
233			break;
234			default:
235			goto userr;
236			}
237			break;
238			#ifdef DC_GLARE
239			case 's':
240			switch (argv[a][2]) {
241			case 'f': /* occupancy schedule file */
242			schedule_path = argv[++a];
243			break;
244			case 's': /* occupancy start hour */
245			start_hour = atoi(argv[++a]);
246			break;
247			case 'e': /* occupancy end hour */
248			end_hour = atoi(argv[++a]);
249			break;
250			default:
251			goto userr;
252			}
253			break;
254			case 'l': /* perceptible glare threshold */
255			dgp_limit = atof(argv[++a]);
256			break;
257			case 'b': /* luminance threshold */
258			dgp_threshold = atof(argv[++a]);
259			break;
260			case 'v':
261			switch (argv[a][2]) {
262			case 'd': /* forward */
263			//check(3, "fff");
264			vdir[0] = atof(argv[++a]);
265			vdir[1] = atof(argv[++a]);
266			vdir[2] = atof(argv[++a]);
267			if (normalize(vdir) == 0.0) goto userr;
268			break;
269			case 'u': /* up */
270			//check(3, "fff");
271			vup[0] = atof(argv[++a]);
272			vup[1] = atof(argv[++a]);
273			vup[2] = atof(argv[++a]);
274			if (normalize(vup) == 0.0) goto userr;
275			break;
276			case 'f': /* view directions file */
277			//check(2, "s");
278			view_path = argv[++a];
279			break;
280			case 'i':
281			switch (argv[a][3]) {
282			case 'f':
283			viewfmt = DTfloat;
284			break;
285			case 'd':
286			viewfmt = DTdouble;
287			break;
288			case 'a':
289			viewfmt = DTascii;
290			break;
291			default:
292			goto userr;
293			}
294			default:
295			goto userr;
296			}
297			break;
298			#endif /* DC_GLARE */
299			default:
300			goto userr;
301			}
302			#ifdef DC_GLARE
303			if ((argc-a < 2) \| (argc-a > 5))
304			goto userr;
305			/* single bounce daylight coefficients file */
306	greg	2.4	direct_path = argv[a++];
307	greg	2.1	#else
308			if ((argc-a < 1) \| (argc-a > 4))
309			goto userr;
310			#endif /* DC_GLARE */
311
312			if (argc-a > 2) { /* VTDs expression */
313			CMATRIX smtx, Dmat, Tmat, imtx;
314			const char *ccp;
315			/* get sky vector/matrix */
316			smtx = cm_load(argv[a+3], 0, nsteps, skyfmt);
317			nsteps = smtx->ncols;
318			/* load BSDF */
319			if (argv[a+1][0] != '!' &&
320			(ccp = strrchr(argv[a+1], '.')) != NULL &&
321			!strcasecmp(ccp+1, "XML"))
322			Tmat = cm_loadBTDF(argv[a+1]);
323			else
324			Tmat = cm_load(argv[a+1], 0, 0, DTfromHeader);
325			/* load Daylight matrix */
326			Dmat = cm_load(argv[a+2], Tmat->ncols,
327			smtx->nrows, DTfromHeader);
328			/* multiply vector through */
329			imtx = cm_multiply(Dmat, smtx);
330			cm_free(Dmat); cm_free(smtx);
331			cmtx = cm_multiply(Tmat, imtx);
332			cm_free(Tmat);
333			cm_free(imtx);
334			} else { /* sky vector/matrix only */
335			//TIMER(timer, "read args");
336			cmtx = cm_load(argv[a+1], 0, nsteps, skyfmt);
337			nsteps = cmtx->ncols;
338			//TIMER(timer, "load sky matrix");
339			}
340			/* prepare output stream */
341			if ((ofspec != NULL) & (nsteps == 1) && hasNumberFormat(ofspec)) {
342			sprintf(fnbuf, ofspec, 1);
343			ofspec = fnbuf;
344			}
345			if (ofspec != NULL && !hasNumberFormat(ofspec)) {
346			if ((ofp = fopen(ofspec, "w")) == NULL) {
347			fprintf(stderr, "%s: cannot open '%s' for output\n",
348			progname, ofspec);
349			return(1);
350			}
351			ofspec = NULL; /* only need to open once */
352			}
353			if (hasNumberFormat(argv[a])) { /* generating image(s) */
354			if (ofspec == NULL) {
355			SET_FILE_BINARY(ofp);
356			newheader("RADIANCE", ofp);
357			printargs(argc, argv, ofp);
358			fputnow(ofp);
359			}
360			if (nsteps > 1) /* multiple output frames? */
361			for (i = 0; i < nsteps; i++) {
362			CMATRIX *cvec = cm_column(cmtx, i);
363			if (ofspec != NULL) {
364			sprintf(fnbuf, ofspec, i);
365			if ((ofp = fopen(fnbuf, "wb")) == NULL) {
366			fprintf(stderr,
367			"%s: cannot open '%s' for output\n",
368			progname, fnbuf);
369			return(1);
370			}
371			newheader("RADIANCE", ofp);
372			printargs(argc, argv, ofp);
373			fputnow(ofp);
374			}
375			fprintf(ofp, "FRAME=%d\n", i);
376			if (!sum_images(argv[a], cvec, ofp))
377			return(1);
378			if (ofspec != NULL) {
379			if (fclose(ofp) == EOF) {
380			fprintf(stderr,
381			"%s: error writing to '%s'\n",
382			progname, fnbuf);
383			return(1);
384			}
385			ofp = stdout;
386			}
387			cm_free(cvec);
388			}
389			else if (!sum_images(argv[a], cmtx, ofp))
390			return(1);
391			} else { /* generating vector/matrix */
392			CMATRIX *Vmat = cm_load(argv[a], 0, cmtx->nrows, DTfromHeader);
393			//TIMER(timer, "load view matrix");
394			CMATRIX *rmtx = cm_multiply(Vmat, cmtx);
395			//TIMER(timer, "multiply");
396			cm_free(Vmat);
397			#ifdef DC_GLARE
398			if (direct_path) { /* Do glare autonomy calculation */
399			/* Load occupancy schedule */
400			occupancy = (int)malloc(nsteps sizeof(int));
401			if (!occupancy) {
402			fprintf(stderr,
403			"%s: out of memory for schedule\n",
404			progname);
405			return(1);
406			}
407			if (schedule_path) {
408			if ((fp = fopen(schedule_path, "r")) == NULL) {
409			fprintf(stderr,
410			"%s: cannot open input file \"%s\"\n",
411			progname, schedule_path);
412			return(1);
413			}
414			if (cm_load_schedule(nsteps, occupancy, fp) < 0) return(1);
415			}
416			else {
417			for (i = 0; i < nsteps; i++) {
418			/* Assume hourly spacing */
419			int hour = i % 24;
420			occupancy[i] = ((hour >= start_hour) & (hour < end_hour));
421			}
422			}
423			//TIMER(timer, "load occupancy schedule");
424
425			/* Load view directions */
426			if (view_path == NULL) {
427			if (vdir[0] == 0.0f && vdir[1] == 0.0f && vdir[2] == 0.0f) {
428			fprintf(stderr,
429			"%s: missing view direction\n",
430			progname);
431			return(1);
432			}
433			}
434			else {
435			if ((fp = fopen(view_path, "r")) == NULL) {
436			fprintf(stderr,
437			"%s: cannot open input file \"%s\"\n",
438			progname, view_path);
439			return(1);
440			}
441			if (viewfmt != DTascii)
442			SET_FILE_BINARY(fp);
443			views = cm_load_views(rmtx->nrows, viewfmt, fp);
444			if (!views) return(1);
445			//TIMER(timer, "load views");
446			}
447
448			/* Calculate glare values */
449			Vmat = cm_load(direct_path, 0, cmtx->nrows, DTfromHeader);
450			//TIMER(timer, "load direct matrix");
451			dgp_values = cm_glare(Vmat, rmtx, cmtx, occupancy, dgp_limit, dgp_threshold, views, vdir, vup);
452			//TIMER(timer, "calculate dgp");
453			free(views);
454			cm_free(Vmat);
455
456			/* Check successful calculation */
457			if (!dgp_values) return(1);
458			}
459			#endif /* DC_GLARE */
460			if (ofspec != NULL) { /* multiple vector files? */
461			const char *wtype = (outfmt==DTascii) ? "w" : "wb";
462			for (i = 0; i < nsteps; i++) {
463			CMATRIX *rvec = cm_column(rmtx, i);
464			sprintf(fnbuf, ofspec, i);
465			if ((ofp = fopen(fnbuf, wtype)) == NULL) {
466			fprintf(stderr,
467			"%s: cannot open '%s' for output\n",
468			progname, fnbuf);
469			return(1);
470			}
471			#ifdef getc_unlocked
472			flockfile(ofp);
473			#endif
474			if (headout) { /* header output */
475			newheader("RADIANCE", ofp);
476			printargs(argc, argv, ofp);
477			fputnow(ofp);
478			fprintf(ofp, "FRAME=%d\n", i);
479			fprintf(ofp, "NROWS=%d\n", rvec->nrows);
480			fputs("NCOLS=1\nNCOMP=3\n", ofp);
481	greg	2.6	if ((outfmt == DTfloat) \| (outfmt == DTdouble))
482	greg	2.1	fputendian(ofp);
483	greg	2.5	fputformat(cm_fmt_id[outfmt], ofp);
484	greg	2.1	fputc('\n', ofp);
485			}
486			cm_write(rvec, outfmt, ofp);
487			if (fclose(ofp) == EOF) {
488			fprintf(stderr,
489			"%s: error writing to '%s'\n",
490			progname, fnbuf);
491			return(1);
492			}
493			ofp = stdout;
494			cm_free(rvec);
495			}
496			} else {
497			#ifdef getc_unlocked
498			flockfile(ofp);
499			#endif
500			if (outfmt != DTascii)
501			SET_FILE_BINARY(ofp);
502			if (headout) { /* header output */
503			newheader("RADIANCE", ofp);
504			printargs(argc, argv, ofp);
505			fputnow(ofp);
506			fprintf(ofp, "NROWS=%d\n", rmtx->nrows);
507			#ifdef DC_GLARE
508			fprintf(ofp, "NCOLS=%d\n", (!dgp_values \|\| dgp_limit < 0) ? rmtx->ncols : 1);
509			fprintf(ofp, "NCOMP=%d\n", dgp_values ? 1 : 3);
510			#else
511			fprintf(ofp, "NCOLS=%d\n", rmtx->ncols);
512			fputs("NCOMP=3\n", ofp);
513			#endif /* DC_GLARE */
514	greg	2.6	if ((outfmt == DTfloat) \| (outfmt == DTdouble))
515	greg	2.1	fputendian(ofp);
516	greg	2.5	fputformat(cm_fmt_id[outfmt], ofp);
517	greg	2.1	fputc('\n', ofp);
518			}
519			#ifdef DC_GLARE
520			if (dgp_values) { /* Write glare autonomy */
521			cm_write_glare(dgp_values, rmtx->nrows, dgp_limit < 0 ? rmtx->ncols : 1, outfmt, ofp);
522			free(dgp_values);
523			//TIMER(timer, "write");
524			}
525			else
526			#endif /* DC_GLARE */
527			cm_write(rmtx, outfmt, ofp);
528			}
529			cm_free(rmtx);
530			}
531			if (fflush(ofp) == EOF) { /* final clean-up */
532			fprintf(stderr, "%s: write error on output\n", progname);
533			return(1);
534			}
535			cm_free(cmtx);
536			return(0);
537			userr:
538			#ifdef DC_GLARE
539			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",
540			progname);
541			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",
542			progname);
543			#else
544			fprintf(stderr, "Usage: %s [-n nsteps][-o ospec][-i{f\|d\|h}][-o{f\|d}] DCspec [skyf]\n",
545			progname);
546			fprintf(stderr, " or: %s [-n nsteps][-o ospec][-i{f\|d\|h}][-o{f\|d}] Vspec Tbsdf Dmat.dat [skyf]\n",
547			progname);
548			#endif /* DC_GLARE */
549			return(1);
550			}