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#ifndef lint |
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static const char RCSid[] = "$Id: dctimestep.c,v 2.29 2014/01/20 22:18:29 greg Exp $"; |
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#endif |
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/* |
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* Compute time-step result using Daylight Coefficient method. |
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* |
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* G. Ward |
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*/ |
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|
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#include <ctype.h> |
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#include "standard.h" |
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#include "cmatrix.h" |
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#include "platform.h" |
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#include "resolu.h" |
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|
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char *progname; /* global argv[0] */ |
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|
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/* Sum together a set of images and write result to fout */ |
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static int |
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sum_images(const char *fspec, const CMATRIX *cv, FILE *fout) |
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{ |
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int myDT = DTfromHeader; |
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COLOR *scanline = NULL; |
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CMATRIX *pmat = NULL; |
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int myXR=0, myYR=0; |
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int i, y; |
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|
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if (cv->ncols != 1) |
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error(INTERNAL, "expected vector in sum_images()"); |
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for (i = 0; i < cv->nrows; i++) { |
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const COLORV *scv = cv_lval(cv,i); |
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char fname[1024]; |
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FILE *fp; |
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int dt, xr, yr; |
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COLORV *psp; |
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/* check for zero */ |
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if ((scv[RED] == 0) & (scv[GRN] == 0) & (scv[BLU] == 0) && |
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(myDT != DTfromHeader) | (i < cv->nrows-1)) |
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continue; |
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/* open next picture */ |
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sprintf(fname, fspec, i); |
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if ((fp = fopen(fname, "r")) == NULL) { |
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sprintf(errmsg, "cannot open picture '%s'", fname); |
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error(SYSTEM, errmsg); |
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} |
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SET_FILE_BINARY(fp); |
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dt = getDTfromHeader(fp); |
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if ((dt != DTrgbe) & (dt != DTxyze) || |
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!fscnresolu(&xr, &yr, fp)) { |
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sprintf(errmsg, "file '%s' not a picture", fname); |
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error(USER, errmsg); |
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} |
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if (myDT == DTfromHeader) { /* on first one */ |
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myDT = dt; |
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myXR = xr; myYR = yr; |
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scanline = (COLOR *)malloc(sizeof(COLOR)*myXR); |
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if (scanline == NULL) |
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error(SYSTEM, "out of memory in sum_images()"); |
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pmat = cm_alloc(myYR, myXR); |
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memset(pmat->cmem, 0, sizeof(COLOR)*myXR*myYR); |
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/* finish header */ |
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fputformat((char *)cm_fmt_id[myDT], fout); |
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fputc('\n', fout); |
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fflush(fout); |
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} else if ((dt != myDT) | (xr != myXR) | (yr != myYR)) { |
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sprintf(errmsg, "picture '%s' format/size mismatch", |
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fname); |
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error(USER, errmsg); |
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} |
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psp = pmat->cmem; |
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for (y = 0; y < yr; y++) { /* read it in */ |
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int x; |
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if (freadscan(scanline, xr, fp) < 0) { |
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sprintf(errmsg, "error reading picture '%s'", |
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fname); |
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error(SYSTEM, errmsg); |
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} |
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/* sum in scanline */ |
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for (x = 0; x < xr; x++, psp += 3) { |
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multcolor(scanline[x], scv); |
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addcolor(psp, scanline[x]); |
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} |
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} |
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fclose(fp); /* done this picture */ |
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} |
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free(scanline); |
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i = cm_write(pmat, myDT, fout); /* write picture */ |
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cm_free(pmat); /* free data */ |
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return(i); |
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} |
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|
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/* check to see if a string contains a %d or %o specification */ |
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static int |
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hasNumberFormat(const char *s) |
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{ |
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if (s == NULL) |
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return(0); |
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|
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while (*s) { |
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while (*s != '%') |
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if (!*s++) |
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return(0); |
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if (*++s == '%') { /* ignore "%%" */ |
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++s; |
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continue; |
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} |
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while (isdigit(*s)) /* field length */ |
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++s; |
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/* field we'll use? */ |
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if ((*s == 'd') | (*s == 'i') | (*s == 'o') | |
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(*s == 'x') | (*s == 'X')) |
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return(1); |
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} |
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return(0); /* didn't find one */ |
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} |
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|
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int |
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main(int argc, char *argv[]) |
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{ |
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int skyfmt = DTascii; |
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int outfmt = DTascii; |
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int nsteps = 1; |
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char *ofspec = NULL; |
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FILE *ofp = stdout; |
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CMATRIX *cmtx; /* component vector/matrix result */ |
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char fnbuf[256]; |
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int a, i; |
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|
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progname = argv[0]; |
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/* get options */ |
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for (a = 1; a < argc && argv[a][0] == '-'; a++) |
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switch (argv[a][1]) { |
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case 'n': |
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nsteps = atoi(argv[++a]); |
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if (nsteps <= 0) |
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goto userr; |
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break; |
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case 'i': |
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switch (argv[a][2]) { |
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case 'f': |
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skyfmt = DTfloat; |
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break; |
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case 'd': |
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skyfmt = DTdouble; |
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break; |
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case 'a': |
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skyfmt = DTascii; |
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break; |
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default: |
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goto userr; |
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} |
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break; |
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case 'o': |
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switch (argv[a][2]) { |
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case '\0': /* output specification (not format) */ |
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ofspec = argv[++a]; |
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break; |
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case 'f': |
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outfmt = DTfloat; |
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break; |
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case 'd': |
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outfmt = DTdouble; |
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break; |
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case 'a': |
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outfmt = DTascii; |
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break; |
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default: |
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goto userr; |
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} |
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break; |
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default: |
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goto userr; |
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} |
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if ((argc-a < 1) | (argc-a > 4)) |
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goto userr; |
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|
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if (argc-a > 2) { /* VTDs expression */ |
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CMATRIX *smtx, *Dmat, *Tmat, *imtx; |
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/* get sky vector/matrix */ |
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smtx = cm_load(argv[a+3], 0, nsteps, skyfmt); |
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/* load BSDF */ |
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Tmat = cm_loadBTDF(argv[a+1]); |
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/* load Daylight matrix */ |
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Dmat = cm_load(argv[a+2], Tmat==NULL ? 0 : Tmat->ncols, |
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smtx->nrows, DTfromHeader); |
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/* multiply vector through */ |
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imtx = cm_multiply(Dmat, smtx); |
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cm_free(Dmat); cm_free(smtx); |
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cmtx = cm_multiply(Tmat, imtx); |
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cm_free(Tmat); |
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cm_free(imtx); |
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} else { /* sky vector/matrix only */ |
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cmtx = cm_load(argv[a+1], 0, nsteps, skyfmt); |
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} |
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/* prepare output stream */ |
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if ((ofspec != NULL) & (nsteps == 1) && hasNumberFormat(ofspec)) { |
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sprintf(fnbuf, ofspec, 1); |
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ofspec = fnbuf; |
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} |
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if (ofspec != NULL && !hasNumberFormat(ofspec)) { |
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if ((ofp = fopen(ofspec, "w")) == NULL) { |
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fprintf(stderr, "%s: cannot open '%s' for output\n", |
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progname, ofspec); |
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return(1); |
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} |
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ofspec = NULL; /* only need to open once */ |
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} |
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if (hasNumberFormat(argv[a])) { /* generating image(s) */ |
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if (ofspec == NULL) { |
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SET_FILE_BINARY(ofp); |
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newheader("RADIANCE", ofp); |
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printargs(argc, argv, ofp); |
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fputnow(ofp); |
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} |
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if (nsteps > 1) /* multiple output frames? */ |
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for (i = 0; i < nsteps; i++) { |
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CMATRIX *cvec = cm_column(cmtx, i); |
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if (ofspec != NULL) { |
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sprintf(fnbuf, ofspec, i+1); |
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if ((ofp = fopen(fnbuf, "wb")) == NULL) { |
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fprintf(stderr, |
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"%s: cannot open '%s' for output\n", |
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progname, fnbuf); |
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return(1); |
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} |
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newheader("RADIANCE", ofp); |
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printargs(argc, argv, ofp); |
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fputnow(ofp); |
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} |
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fprintf(ofp, "FRAME=%d\n", i+1); |
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if (!sum_images(argv[a], cvec, ofp)) |
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return(1); |
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if (ofspec != NULL) { |
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if (fclose(ofp) == EOF) { |
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fprintf(stderr, |
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"%s: error writing to '%s'\n", |
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progname, fnbuf); |
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return(1); |
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} |
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ofp = stdout; |
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} |
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cm_free(cvec); |
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} |
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else if (!sum_images(argv[a], cmtx, ofp)) |
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return(1); |
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} else { /* generating vector/matrix */ |
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CMATRIX *Vmat = cm_load(argv[a], 0, cmtx->nrows, DTfromHeader); |
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CMATRIX *rmtx = cm_multiply(Vmat, cmtx); |
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cm_free(Vmat); |
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if (ofspec != NULL) { /* multiple vector files? */ |
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const char *wtype = (outfmt==DTascii) ? "w" : "wb"; |
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for (i = 0; i < nsteps; i++) { |
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CMATRIX *rvec = cm_column(rmtx, i); |
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sprintf(fnbuf, ofspec, i+1); |
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if ((ofp = fopen(fnbuf, wtype)) == NULL) { |
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fprintf(stderr, |
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"%s: cannot open '%s' for output\n", |
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progname, fnbuf); |
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return(1); |
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} |
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cm_write(rvec, outfmt, ofp); |
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if (fclose(ofp) == EOF) { |
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fprintf(stderr, |
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"%s: error writing to '%s'\n", |
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progname, fnbuf); |
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return(1); |
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} |
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ofp = stdout; |
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cm_free(rvec); |
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} |
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} else { |
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if (outfmt != DTascii) |
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SET_FILE_BINARY(ofp); |
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if (rmtx->ncols > 1) { /* header if actual matrix */ |
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newheader("RADIANCE", ofp); |
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printargs(argc, argv, ofp); |
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fputnow(ofp); |
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fputformat((char *)cm_fmt_id[outfmt], ofp); |
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fputc('\n', ofp); |
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} |
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cm_write(rmtx, outfmt, ofp); |
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} |
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cm_free(rmtx); |
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} |
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if (fflush(ofp) == EOF) { /* final clean-up */ |
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fprintf(stderr, "%s: write error on output\n", progname); |
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return(1); |
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} |
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cm_free(cmtx); |
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return(0); |
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userr: |
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fprintf(stderr, "Usage: %s [-n nsteps][-o ospec][-i{f|d}][-o{f|d}] DCspec [skyf]\n", |
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progname); |
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fprintf(stderr, " or: %s [-n nsteps][-o ospec][-i{f|d}][-o{f|d}] Vspec Tbsdf.xml Dmat.dat [skyf]\n", |
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progname); |
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return(1); |
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} |