src/util/dcglare.c

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