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#include <ctype.h> |
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#include "standard.h" |
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#include "platform.h" |
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#include "paths.h" |
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#include "color.h" |
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#include "resolu.h" |
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#include "bsdf.h" |
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#include "bsdf_m.h" |
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|
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char *progname; /* global argv[0] */ |
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|
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CMATRIX *cm; |
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FILE *fp = stdin; |
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|
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if (ncols <= 0) |
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error(USER, "Non-positive number of columns"); |
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if (fname == NULL) |
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fname = "<stdin>"; |
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else if ((fp = fopen(fname, "r")) == NULL) { |
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} |
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} |
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|
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/* convert a BSDF to our matrix representation */ |
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/* Convert a BSDF to our matrix representation */ |
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static CMATRIX * |
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cm_bsdf(const struct BSDF_data *bsdf) |
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cm_bsdf(const COLOR bsdfLamb, const COLOR specCol, const SDMat *bsdf) |
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{ |
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CMATRIX *cm = cm_alloc(bsdf->nout, bsdf->ninc); |
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int nbadohm = 0; |
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int nneg = 0; |
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int r, c; |
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|
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/* reciprocity is "transparent" */ |
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for (c = 0; c < cm->ncols; c++) { |
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float dom = getBSDF_incohm(bsdf,c); |
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FVECT v; |
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|
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if (dom <= .0) { |
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nbadohm++; |
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continue; |
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} |
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if (!getBSDF_incvec(v,bsdf,c) || v[2] > FTINY) |
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error(USER, "illegal incoming BTDF direction"); |
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dom *= -v[2]; |
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const double dom = mBSDF_incohm(bsdf,c); |
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/* projected solid angle */ |
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nbadohm += (dom <= 0); |
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|
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for (r = 0; r < cm->nrows; r++) { |
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float f = BSDF_value(bsdf,c,r); |
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float f = mBSDF_value(bsdf,c,r); |
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COLORV *mp = cm_lval(cm,r,c); |
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|
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if (f <= .0) { |
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/* check BSDF value */ |
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if ((f <= 0) | (dom <= 0)) { |
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nneg += (f < -FTINY); |
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f = .0f; |
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} |
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mp[0] = mp[1] = mp[2] = f * dom; |
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copycolor(mp, specCol); |
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scalecolor(mp, f); |
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addcolor(mp, bsdfLamb); |
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scalecolor(mp, dom); |
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} |
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} |
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if (nneg || nbadohm) { |
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if (nneg | nbadohm) { |
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sprintf(errmsg, |
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"BTDF has %d negatives and %d bad incoming solid angles", |
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nneg, nbadohm); |
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return(cm); |
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} |
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|
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/* Load and convert a matrix BSDF from the given XML file */ |
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static CMATRIX * |
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cm_loadBSDF(char *fname) |
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{ |
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CMATRIX *Tmat; |
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char *fpath; |
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SDError ec; |
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SDData myBSDF; |
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COLOR bsdfLamb, specCol; |
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/* find path to BSDF file */ |
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fpath = getpath(fname, getrlibpath(), R_OK); |
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if (fpath == NULL) { |
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sprintf(errmsg, "cannot find BSDF file '%s'", fname); |
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error(USER, errmsg); |
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} |
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SDclearBSDF(&myBSDF, fname); /* load XML and check type */ |
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ec = SDloadFile(&myBSDF, fpath); |
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if (ec) |
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error(USER, transSDError(ec)); |
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if (myBSDF.tf == NULL || myBSDF.tf->ncomp != 1 || |
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myBSDF.tf->comp[0].func != &SDhandleMtx) { |
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sprintf(errmsg, "unsupported BSDF '%s'", fpath); |
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error(USER, errmsg); |
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} |
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/* convert BTDF to matrix */ |
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ccy2rgb(&myBSDF.tLamb.spec, myBSDF.tLamb.cieY/PI, bsdfLamb); |
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ccy2rgb(&myBSDF.tf->comp[0].cspec[0], 1., specCol); |
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Tmat = cm_bsdf(bsdfLamb, specCol, (SDMat *)myBSDF.tf->comp[0].dist); |
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/* free BSDF and return */ |
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SDfreeBSDF(&myBSDF); |
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return(Tmat); |
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} |
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|
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/* Sum together a set of images and write result to stdout */ |
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static int |
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< |
sum_images(const char *fspec, const CMATRIX *cv) |
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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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CMATRIX *pmat; |
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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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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(myDT==DTrgbe ? COLRFMT : CIEFMT, stdout); |
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fputc('\n', stdout); |
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fprtresolu(myXR, myYR, stdout); |
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fflush(stdout); |
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fputformat(myDT==DTrgbe ? COLRFMT : CIEFMT, fout); |
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fputc('\n', fout); |
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fprtresolu(myXR, myYR, 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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free(scanline); |
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/* write scanlines */ |
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for (y = 0; y < myYR; y++) |
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if (fwritescan((COLOR *)cm_lval(pmat, y, 0), myXR, stdout) < 0) |
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if (fwritescan((COLOR *)cm_lval(pmat, y, 0), myXR, fout) < 0) |
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return(0); |
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cm_free(pmat); /* all done */ |
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return(fflush(stdout) == 0); |
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return(fflush(fout) == 0); |
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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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while (*s && *s != '%') |
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s++; |
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if (!*s) |
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< |
return(0); |
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do |
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< |
++s; |
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< |
while (isdigit(*s)); |
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|
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return(*s == 'd' | *s == 'i' | *s == 'o' | *s == 'x' | *s == 'X'); |
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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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CMATRIX *tvec, *Dmat, *Tmat, *ivec, *cvec; |
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< |
struct BSDF_data *btdf; |
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CMATRIX *cvec; |
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|
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progname = argv[0]; |
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|
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if ((argc < 4) | (argc > 5)) { |
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< |
fprintf(stderr, "Usage: %s Vspec Tbsdf.xml Dmat.dat [tregvec]\n", |
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progname); |
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if ((argc < 2) | (argc > 5)) { |
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fprintf(stderr, "Usage: %s DCspec [tregvec]\n", progname); |
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fprintf(stderr, " or: %s Vspec Tbsdf.xml Dmat.dat [tregvec]\n", |
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progname); |
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return(1); |
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} |
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< |
/* load Tregenza vector */ |
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< |
tvec = cm_load(argv[4], 0, 1, DTascii); /* argv[4]==NULL iff argc==4 */ |
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< |
/* load BTDF */ |
482 |
< |
btdf = load_BSDF(argv[2]); |
483 |
< |
if (btdf == NULL) |
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< |
return(1); |
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> |
|
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> |
if (argc > 3) { /* VTDs expression */ |
481 |
> |
CMATRIX *svec, *Dmat, *Tmat, *ivec; |
482 |
> |
/* get sky vector */ |
483 |
> |
svec = cm_load(argv[4], 0, 1, DTascii); |
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> |
/* load BSDF */ |
485 |
> |
Tmat = cm_loadBSDF(argv[2]); |
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/* load Daylight matrix */ |
487 |
< |
Dmat = cm_load(argv[3], btdf->ninc, tvec->nrows, DTfromHeader); |
487 |
> |
Dmat = cm_load(argv[3], Tmat->ncols, svec->nrows, DTfromHeader); |
488 |
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/* multiply vector through */ |
489 |
< |
ivec = cm_multiply(Dmat, tvec); |
490 |
< |
cm_free(Dmat); cm_free(tvec); |
491 |
< |
Tmat = cm_bsdf(btdf); /* convert BTDF to matrix */ |
492 |
< |
free_BSDF(btdf); |
493 |
< |
cvec = cm_multiply(Tmat, ivec); /* cvec = component vector */ |
494 |
< |
cm_free(Tmat); cm_free(ivec); |
489 |
> |
ivec = cm_multiply(Dmat, svec); |
490 |
> |
cm_free(Dmat); cm_free(svec); |
491 |
> |
cvec = cm_multiply(Tmat, ivec); /* cvec = component vector */ |
492 |
> |
cm_free(Tmat); cm_free(ivec); |
493 |
> |
} else { /* else just use sky vector */ |
494 |
> |
cvec = cm_load(argv[2], 0, 1, DTascii); |
495 |
> |
} |
496 |
> |
|
497 |
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if (hasNumberFormat(argv[1])) { /* generating image */ |
498 |
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SET_FILE_BINARY(stdout); |
499 |
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newheader("RADIANCE", stdout); |
500 |
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printargs(argc, argv, stdout); |
501 |
|
fputnow(stdout); |
502 |
< |
if (!sum_images(argv[1], cvec)) |
502 |
> |
if (!sum_images(argv[1], cvec, stdout)) |
503 |
|
return(1); |
504 |
|
} else { /* generating vector */ |
505 |
|
CMATRIX *Vmat = cm_load(argv[1], 0, cvec->nrows, DTfromHeader); |