--- ray/src/cv/bsdf2ttree.c 2016/03/06 01:13:17 2.36 +++ ray/src/cv/bsdf2ttree.c 2020/11/13 19:21:11 2.56 @@ -1,5 +1,5 @@ #ifndef lint -static const char RCSid[] = "$Id: bsdf2ttree.c,v 2.36 2016/03/06 01:13:17 schorsch Exp $"; +static const char RCSid[] = "$Id: bsdf2ttree.c,v 2.56 2020/11/13 19:21:11 greg Exp $"; #endif /* * Load measured BSDF interpolant and write out as XML file with tensor tree. @@ -8,9 +8,9 @@ static const char RCSid[] = "$Id: bsdf2ttree.c,v 2.36 */ #define _USE_MATH_DEFINES -#include #include #include +#include #include "random.h" #include "platform.h" #include "paths.h" @@ -19,16 +19,16 @@ static const char RCSid[] = "$Id: bsdf2ttree.c,v 2.36 #include "bsdfrep.h" /* global argv[0] */ char *progname; + /* reciprocity averaging option */ +static const char *recip = " -a"; /* percentage to cull (<0 to turn off) */ static double pctcull = 90.; /* sampling order */ static int samp_order = 6; /* super-sampling threshold */ -const double ssamp_thresh = 0.35; +static double ssamp_thresh = 0.35; /* number of super-samples */ -#ifndef NSSAMP -#define NSSAMP 100 -#endif +static int nssamp = 256; /* limit on number of RBF lobes */ static int lobe_lim = 15000; /* progress bar length */ @@ -38,7 +38,7 @@ static int do_prog = 79; static char *wrapBSDF[MAXCARG] = {"wrapBSDF", "-U"}; static int wbsdfac = 2; -/* Add argument to wrapBSDF, allocating space if isstatic */ +/* Add argument to wrapBSDF, allocating space if !isstatic */ static void add_wbsdf(const char *arg, int isstatic) { @@ -127,6 +127,10 @@ static void eval_isotropic(char *funame) { const int sqres = 1<= 0) { - sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", - pctcull, samp_order, create_component_file(0)); + sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", + recip, pctcull, samp_order, create_component_file(0)); ofp = popen(cmd, "w"); if (ofp == NULL) { fprintf(stderr, "%s: cannot create pipe to rttree_reduce\n", @@ -149,11 +153,11 @@ eval_isotropic(char *funame) #endif if (rbf_colorimetry == RBCtristimulus) { double uvcull = 100. - (100.-pctcull)*.25; - sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", - uvcull, samp_order, create_component_file(1)); + sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", + recip, uvcull, samp_order, create_component_file(1)); uvfp[0] = popen(cmd, "w"); - sprintf(cmd, "rttree_reduce -a -h -ff -r 3 -t %f -g %d > %s", - uvcull, samp_order, create_component_file(2)); + sprintf(cmd, "rttree_reduce%s -h -ff -r 3 -t %f -g %d > %s", + recip, uvcull, samp_order, create_component_file(2)); uvfp[1] = popen(cmd, "w"); if ((uvfp[0] == NULL) | (uvfp[1] == NULL)) { fprintf(stderr, "%s: cannot open pipes to uv output\n", @@ -187,53 +191,123 @@ eval_isotropic(char *funame) } if (funame != NULL) /* need to assign Dx, Dy, Dz? */ assignD = (fundefined(funame) < 6); + val_last = (float *)calloc(sqres, sizeof(float)); + if (funame == NULL) + sdv_next = (SDValue *)malloc(sizeof(SDValue)*sqres); + else + val_next = (float *)malloc(sizeof(float)*sqres); /* run through directions */ for (ix = 0; ix < sqres/2; ix++) { - RBFNODE *rbf = NULL; - iovec[0] = 2.*(ix+.5)/sqres - 1.; - iovec[1] = .0; - iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0]); + const int zipsgn = (ix & 1)*2 - 1; + RBFNODE *rbf = NULL; + iovec[0] = 2.*sqfact*(ix+.5) - 1.; + iovec[1] = zipsgn*sqfact*.5; + iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0] + - iovec[1]*iovec[1]); if (funame == NULL) rbf = advect_rbf(iovec, lobe_lim); + /* presample first row */ + for (oy = 0; oy < sqres; oy++) { + SDsquare2disk(iovec+3, .5*sqfact, (oy+.5)*sqfact); + iovec[5] = output_orient * + sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); + if (funame == NULL) { + eval_rbfcol(&sdv_next[oy], rbf, iovec+3); + } else { + if (assignD) { + varset("Dx", '=', -iovec[3]); + varset("Dy", '=', -iovec[4]); + varset("Dz", '=', -iovec[5]); + ++eclock; + } + val_next[oy] = funvalue(funame, 6, iovec); + } + } for (ox = 0; ox < sqres; ox++) { - float last_bsdf = -1; + /* + * Super-sample when we detect a difference from before + * or after in this row, above or below. + */ for (oy = 0; oy < sqres; oy++) { - SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); - iovec[5] = output_orient * + if (ox < sqres-1) { /* keeping one row ahead... */ + SDsquare2disk(iovec+3, (ox+1.5)*sqfact, (oy+.5)*sqfact); + iovec[5] = output_orient * sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); + } if (funame == NULL) { - SDValue sdv; - eval_rbfcol(&sdv, rbf, iovec+3); + SDValue sdv = sdv_next[oy]; bsdf = sdv.cieY; + if (ox < sqres-1) + eval_rbfcol(&sdv_next[oy], rbf, iovec+3); + if (abs_diff(bsdf, sdv_next[oy].cieY) > ssamp_thresh || + (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || + (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || + (oy < sqres-1 && + abs_diff(bsdf, sdv_next[oy+1].cieY) > ssamp_thresh)) { + int ssi; + double ssa[2], sum = 0, usum = 0, vsum = 0; + /* super-sample voxel */ + for (ssi = nssamp; ssi--; ) { + SDmultiSamp(ssa, 2, (ssi+frandom()) / + (double)nssamp); + SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, + (oy+ssa[1])*sqfact); + iovec[5] = output_orient * + sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); + eval_rbfcol(&sdv, rbf, iovec+3); + sum += sdv.cieY; + if (rbf_colorimetry == RBCtristimulus) { + sdv.cieY /= + -2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; + usum += 4.*sdv.spec.cx * sdv.cieY; + vsum += 9.*sdv.spec.cy * sdv.cieY; + } + } + bsdf = sum / (double)nssamp; + if (rbf_colorimetry == RBCtristimulus) { + uv[0] = usum / (sum+FTINY); + uv[1] = vsum / (sum+FTINY); + } + } else if (rbf_colorimetry == RBCtristimulus) { - c_ccvt(&sdv.spec, C_CSXY); uv[0] = uv[1] = 1. / (-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); uv[0] *= 4.*sdv.spec.cx; uv[1] *= 9.*sdv.spec.cy; } } else { - if (assignD) { - varset("Dx", '=', -iovec[3]); - varset("Dy", '=', -iovec[4]); - varset("Dz", '=', -iovec[5]); - ++eclock; + bsdf = val_next[oy]; + if (ox < sqres-1) { + if (assignD) { + varset("Dx", '=', -iovec[3]); + varset("Dy", '=', -iovec[4]); + varset("Dz", '=', -iovec[5]); + ++eclock; + } + val_next[oy] = funvalue(funame, 6, iovec); } - bsdf = funvalue(funame, 6, iovec); -#if (NSSAMP > 0) - if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { + if (abs_diff(bsdf, val_next[oy]) > ssamp_thresh || + (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || + (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || + (oy < sqres-1 && + abs_diff(bsdf, val_next[oy+1]) > ssamp_thresh)) { int ssi; - double ssa[3], ssvec[6], sum = 0; + double ssa[4], ssvec[6], sum = 0; /* super-sample voxel */ - for (ssi = NSSAMP; ssi--; ) { - SDmultiSamp(ssa, 3, (ssi+frandom()) * - (1./NSSAMP)); - ssvec[0] = 2.*(ix+ssa[0])/sqres - 1.; - ssvec[1] = .0; - ssvec[2] = input_orient * - sqrt(1. - ssvec[0]*ssvec[0]); - SDsquare2disk(ssvec+3, (ox+ssa[1])/sqres, - (oy+ssa[2])/sqres); + for (ssi = nssamp; ssi--; ) { + SDmultiSamp(ssa, 4, (ssi+frandom()) / + (double)nssamp); + ssvec[0] = 2.*sqfact*(ix+ssa[0]) - 1.; + ssvec[1] = zipsgn*sqfact*ssa[1]; + ssvec[2] = 1. - ssvec[0]*ssvec[0] + - ssvec[1]*ssvec[1]; + if (ssvec[2] < .0) { + ssvec[1] = 0; + ssvec[2] = 1. - ssvec[0]*ssvec[0]; + } + ssvec[2] = input_orient * sqrt(ssvec[2]); + SDsquare2disk(ssvec+3, (ox+ssa[2])*sqfact, + (oy+ssa[3])*sqfact); ssvec[5] = output_orient * sqrt(1. - ssvec[3]*ssvec[3] - ssvec[4]*ssvec[4]); @@ -245,32 +319,37 @@ eval_isotropic(char *funame) } sum += funvalue(funame, 6, ssvec); } - bsdf = sum/NSSAMP; + bsdf = sum / (double)nssamp; } -#endif } if (pctcull >= 0) - fwrite(&bsdf, sizeof(bsdf), 1, ofp); + putbinary(&bsdf, sizeof(bsdf), 1, ofp); else fprintf(ofp, "\t%.3e\n", bsdf); if (rbf_colorimetry == RBCtristimulus) { if (pctcull >= 0) { - fwrite(&uv[0], sizeof(*uv), 1, uvfp[0]); - fwrite(&uv[1], sizeof(*uv), 1, uvfp[1]); + putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); + putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); } else { fprintf(uvfp[0], "\t%.3e\n", uv[0]); fprintf(uvfp[1], "\t%.3e\n", uv[1]); } } - last_bsdf = bsdf; + if (val_last != NULL) + val_last[oy] = bsdf; } } if (rbf != NULL) free(rbf); - prog_show((ix+1.)*(2./sqres)); + prog_show((ix+1.)*(2.*sqfact)); } prog_done(); + if (val_last != NULL) { + free(val_last); + if (val_next != NULL) free(val_next); + if (sdv_next != NULL) free(sdv_next); + } if (pctcull >= 0) { /* finish output */ if (pclose(ofp)) { fprintf(stderr, "%s: error running rttree_reduce on Y\n", @@ -313,6 +392,10 @@ static void eval_anisotropic(char *funame) { const int sqres = 1<= 0) { const char *avgopt = (input_orient>0 ^ output_orient>0) - ? "" : " -a"; + ? "" : recip; sprintf(cmd, "rttree_reduce%s -h -ff -r 4 -t %f -g %d > %s", avgopt, pctcull, samp_order, create_component_file(0)); @@ -378,55 +461,118 @@ eval_anisotropic(char *funame) } if (funame != NULL) /* need to assign Dx, Dy, Dz? */ assignD = (fundefined(funame) < 6); + val_last = (float *)calloc(sqres, sizeof(float)); + if (funame == NULL) + sdv_next = (SDValue *)malloc(sizeof(SDValue)*sqres); + else + val_next = (float *)malloc(sizeof(float)*sqres); /* run through directions */ for (ix = 0; ix < sqres; ix++) for (iy = 0; iy < sqres; iy++) { RBFNODE *rbf = NULL; /* Klems reversal */ - SDsquare2disk(iovec, 1.-(ix+.5)/sqres, 1.-(iy+.5)/sqres); + SDsquare2disk(iovec, 1.-(ix+.5)*sqfact, 1.-(iy+.5)*sqfact); iovec[2] = input_orient * sqrt(1. - iovec[0]*iovec[0] - iovec[1]*iovec[1]); if (funame == NULL) rbf = advect_rbf(iovec, lobe_lim); + /* presample first row */ + for (oy = 0; oy < sqres; oy++) { + SDsquare2disk(iovec+3, .5*sqfact, (oy+.5)*sqfact); + iovec[5] = output_orient * + sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); + if (funame == NULL) { + eval_rbfcol(&sdv_next[oy], rbf, iovec+3); + } else { + if (assignD) { + varset("Dx", '=', -iovec[3]); + varset("Dy", '=', -iovec[4]); + varset("Dz", '=', -iovec[5]); + ++eclock; + } + val_next[oy] = funvalue(funame, 6, iovec); + } + } for (ox = 0; ox < sqres; ox++) { - float last_bsdf = -1; + /* + * Super-sample when we detect a difference from before + * or after in this row, above or below. + */ for (oy = 0; oy < sqres; oy++) { - SDsquare2disk(iovec+3, (ox+.5)/sqres, (oy+.5)/sqres); - iovec[5] = output_orient * + if (ox < sqres-1) { /* keeping one row ahead... */ + SDsquare2disk(iovec+3, (ox+1.5)*sqfact, (oy+.5)*sqfact); + iovec[5] = output_orient * sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); + } if (funame == NULL) { - SDValue sdv; - eval_rbfcol(&sdv, rbf, iovec+3); + SDValue sdv = sdv_next[oy]; bsdf = sdv.cieY; + if (ox < sqres-1) + eval_rbfcol(&sdv_next[oy], rbf, iovec+3); + if (abs_diff(bsdf, sdv_next[oy].cieY) > ssamp_thresh || + (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || + (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || + (oy < sqres-1 && + abs_diff(bsdf, sdv_next[oy+1].cieY) > ssamp_thresh)) { + int ssi; + double ssa[2], sum = 0, usum = 0, vsum = 0; + /* super-sample voxel */ + for (ssi = nssamp; ssi--; ) { + SDmultiSamp(ssa, 2, (ssi+frandom()) / + (double)nssamp); + SDsquare2disk(iovec+3, (ox+ssa[0])*sqfact, + (oy+ssa[1])*sqfact); + iovec[5] = output_orient * + sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); + eval_rbfcol(&sdv, rbf, iovec+3); + sum += sdv.cieY; + if (rbf_colorimetry == RBCtristimulus) { + sdv.cieY /= + -2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.; + usum += 4.*sdv.spec.cx * sdv.cieY; + vsum += 9.*sdv.spec.cy * sdv.cieY; + } + } + bsdf = sum / (double)nssamp; + if (rbf_colorimetry == RBCtristimulus) { + uv[0] = usum / (sum+FTINY); + uv[1] = vsum / (sum+FTINY); + } + } else if (rbf_colorimetry == RBCtristimulus) { - c_ccvt(&sdv.spec, C_CSXY); uv[0] = uv[1] = 1. / (-2.*sdv.spec.cx + 12.*sdv.spec.cy + 3.); uv[0] *= 4.*sdv.spec.cx; uv[1] *= 9.*sdv.spec.cy; } } else { - if (assignD) { - varset("Dx", '=', -iovec[3]); - varset("Dy", '=', -iovec[4]); - varset("Dz", '=', -iovec[5]); - ++eclock; + bsdf = val_next[oy]; + if (ox < sqres-1) { + if (assignD) { + varset("Dx", '=', -iovec[3]); + varset("Dy", '=', -iovec[4]); + varset("Dz", '=', -iovec[5]); + ++eclock; + } + val_next[oy] = funvalue(funame, 6, iovec); } - bsdf = funvalue(funame, 6, iovec); -#if (NSSAMP > 0) - if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { + if (abs_diff(bsdf, val_next[oy]) > ssamp_thresh || + (ox && abs_diff(bsdf, val_last[oy]) > ssamp_thresh) || + (oy && abs_diff(bsdf, val_last[oy-1]) > ssamp_thresh) || + (oy < sqres-1 && + abs_diff(bsdf, val_next[oy+1]) > ssamp_thresh)) { int ssi; double ssa[4], ssvec[6], sum = 0; /* super-sample voxel */ - for (ssi = NSSAMP; ssi--; ) { - SDmultiSamp(ssa, 4, (ssi+frandom()) * - (1./NSSAMP)); - SDsquare2disk(ssvec, 1.-(ix+ssa[0])/sqres, - 1.-(iy+ssa[1])/sqres); + for (ssi = nssamp; ssi--; ) { + SDmultiSamp(ssa, 4, (ssi+frandom()) / + (double)nssamp); + SDsquare2disk(ssvec, 1.-(ix+ssa[0])*sqfact, + 1.-(iy+ssa[1])*sqfact); ssvec[2] = input_orient * sqrt(1. - ssvec[0]*ssvec[0] - ssvec[1]*ssvec[1]); - SDsquare2disk(ssvec+3, (ox+ssa[2])/sqres, - (oy+ssa[3])/sqres); + SDsquare2disk(ssvec+3, (ox+ssa[2])*sqfact, + (oy+ssa[3])*sqfact); ssvec[5] = output_orient * sqrt(1. - ssvec[3]*ssvec[3] - ssvec[4]*ssvec[4]); @@ -438,25 +584,25 @@ eval_anisotropic(char *funame) } sum += funvalue(funame, 6, ssvec); } - bsdf = sum/NSSAMP; + bsdf = sum / (double)nssamp; } -#endif } if (pctcull >= 0) - fwrite(&bsdf, sizeof(bsdf), 1, ofp); + putbinary(&bsdf, sizeof(bsdf), 1, ofp); else fprintf(ofp, "\t%.3e\n", bsdf); if (rbf_colorimetry == RBCtristimulus) { if (pctcull >= 0) { - fwrite(&uv[0], sizeof(*uv), 1, uvfp[0]); - fwrite(&uv[1], sizeof(*uv), 1, uvfp[1]); + putbinary(&uv[0], sizeof(*uv), 1, uvfp[0]); + putbinary(&uv[1], sizeof(*uv), 1, uvfp[1]); } else { fprintf(uvfp[0], "\t%.3e\n", uv[0]); fprintf(uvfp[1], "\t%.3e\n", uv[1]); } } - last_bsdf = bsdf; + if (val_last != NULL) + val_last[oy] = bsdf; } } if (rbf != NULL) @@ -464,6 +610,11 @@ eval_anisotropic(char *funame) prog_show((ix*sqres+iy+1.)/(sqres*sqres)); } prog_done(); + if (val_last != NULL) { + free(val_last); + if (val_next != NULL) free(val_next); + if (sdv_next != NULL) free(sdv_next); + } if (pctcull >= 0) { /* finish output */ if (pclose(ofp)) { fprintf(stderr, "%s: error running rttree_reduce on Y\n", @@ -500,7 +651,7 @@ eval_anisotropic(char *funame) static int wrap_up(void) { - char cmd[8192]; + char cmd[32700]; if (bsdf_manuf[0]) { add_wbsdf("-f", 1); @@ -551,38 +702,107 @@ wrap_up(void) } #endif +#define HEAD_BUFLEN 10240 +static char head_buf[HEAD_BUFLEN]; +static int cur_headlen = 0; + +/* Record header line as comment associated with this SIR input */ +static int +record2header(char *s) +{ + int len = strlen(s); + + if (cur_headlen+len >= HEAD_BUFLEN-6) + return(0); + /* includes EOL */ + strcpy(head_buf+cur_headlen, s); + cur_headlen += len; + +#if defined(_WIN32) || defined(_WIN64) + if (head_buf[cur_headlen-1] == '\n') + head_buf[cur_headlen-1] = '\t'; +#endif + return(1); +} + +/* Finish off header for this file */ +static void +done_header(void) +{ + while (cur_headlen > 0 && isspace(head_buf[cur_headlen-1])) + --cur_headlen; + head_buf[cur_headlen] = '\0'; + if (!cur_headlen) + return; + add_wbsdf("-C", 1); + add_wbsdf(head_buf, 0); + head_buf[cur_headlen=0] = '\0'; +} + /* Read in BSDF and interpolate as tensor tree representation */ int main(int argc, char *argv[]) { - static char tfmt[2][4] = {"t4", "t3"}; - int dofwd = 0, dobwd = 1; - char buf[2048]; - int i, na; + static const char tfmt[2][4] = {"t4", "t3"}; + int dofwd = 0, dobwd = 1; + int nsirs = 0; + char buf[1024]; + int i; progname = argv[0]; esupport |= E_VARIABLE|E_FUNCTION|E_RCONST; esupport &= ~(E_INCHAN|E_OUTCHAN); scompile("PI:3.14159265358979323846", NULL, 0); biggerlib(); - for (i = 1; i < argc-1 && (argv[i][0] == '-') | (argv[i][0] == '+'); i++) - switch (argv[i][1]) { /* get options */ + strcpy(buf, "File produced by: "); + if (convert_commandline(buf+18, sizeof(buf)-18, argv) != NULL) { + add_wbsdf("-C", 1); add_wbsdf(buf, 0); + } + for (i = 1; i < argc; i++) + if ((argv[i][0] == '-') | (argv[i][0] == '+')) { + switch (argv[i][1]) { /* get option */ case 'e': scompile(argv[++i], NULL, 0); + if (single_plane_incident < 0) + single_plane_incident = 0; break; case 'f': if (!argv[i][2]) { if (strchr(argv[++i], '=') != NULL) { add_wbsdf("-f", 1); add_wbsdf(argv[i], 1); - } else - fcompile(argv[i]); + } else { + char *fpath = getpath(argv[i], + getrlibpath(), 0); + if (fpath == NULL) { + fprintf(stderr, + "%s: cannot find file '%s'\n", + argv[0], argv[i]); + return(1); + } + fcompile(fpath); + if (single_plane_incident < 0) + single_plane_incident = 0; + } } else dofwd = (argv[i][0] == '+'); break; + case 'a': + recip = (argv[i][0] == '+') ? " -a" : ""; + break; case 'b': dobwd = (argv[i][0] == '+'); break; + case 'n': + nssamp = atoi(argv[++i]); + if (nssamp <= 0) + goto userr; + break; + case 's': + ssamp_thresh = atof(argv[++i]); + if (ssamp_thresh <= FTINY) + goto userr; + break; case 't': switch (argv[i][2]) { case '3': @@ -618,11 +838,39 @@ main(int argc, char *argv[]) default: goto userr; } - strcpy(buf, "File produced by: "); - if (convert_commandline(buf+18, sizeof(buf)-18, argv) != NULL) { - add_wbsdf("-C", 1); add_wbsdf(buf, 0); - } - if (single_plane_incident >= 0) { /* function-based BSDF? */ + } else { /* input SIR or function */ + FILE *fpin; + if (!nsirs & (single_plane_incident >= 0)) + break; /* must be a function */ + if (nsirs >= 4) { + fprintf(stderr, "At most 4 SIR inputs supported\n"); + goto userr; + } + fpin = fopen(argv[i], "rb"); /* open SIR file */ + if (fpin == NULL) { + fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n", + progname, argv[i]); + return(1); + } + sprintf(buf, "%s:\n", argv[i]); + record2header(buf); + sir_headshare = &record2header; + if (!load_bsdf_rep(fpin)) + return(1); + fclose(fpin); + done_header(); + sprintf(buf, "Interpolating component '%s'", argv[i]); + prog_start(buf); + if (!nsirs++) { + add_wbsdf("-a", 1); + add_wbsdf(tfmt[single_plane_incident], 1); + } + if (single_plane_incident) + eval_isotropic(NULL); + else + eval_anisotropic(NULL); + } + if (i < argc) { /* function-based BSDF? */ void (*evf)(char *s) = single_plane_incident ? eval_isotropic : eval_anisotropic; if (i != argc-1 || fundefined(argv[i]) < 3) { @@ -653,52 +901,27 @@ main(int argc, char *argv[]) prog_start("Evaluating inside->outside transmission"); (*evf)(argv[i]); } - return(wrap_up()); + } else if (!nsirs) { /* else load SIR from stdin? */ + record2header(":\n"); + sir_headshare = &record2header; + if (!load_bsdf_rep(stdin)) + return(1); + done_header(); + prog_start("Interpolating from standard input"); + add_wbsdf("-a", 1); + add_wbsdf(tfmt[single_plane_incident], 1); + if (single_plane_incident) /* resample dist. */ + eval_isotropic(NULL); + else + eval_anisotropic(NULL); } - if (i < argc) { /* open input files if given */ - int nbsdf = 0; - for ( ; i < argc; i++) { /* interpolate each component */ - char pbuf[256]; - FILE *fpin = fopen(argv[i], "rb"); - if (fpin == NULL) { - fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n", - progname, argv[i]); - return(1); - } - if (!load_bsdf_rep(fpin)) - return(1); - fclose(fpin); - sprintf(pbuf, "Interpolating component '%s'", argv[i]); - prog_start(pbuf); - if (!nbsdf++) { - add_wbsdf("-a", 1); - add_wbsdf(tfmt[single_plane_incident], 1); - } - if (single_plane_incident) - eval_isotropic(NULL); - else - eval_anisotropic(NULL); - } - return(wrap_up()); - } - SET_FILE_BINARY(stdin); /* load from stdin */ - if (!load_bsdf_rep(stdin)) - return(1); - prog_start("Interpolating from standard input"); - add_wbsdf("-a", 1); - add_wbsdf(tfmt[single_plane_incident], 1); - if (single_plane_incident) /* resample dist. */ - eval_isotropic(NULL); - else - eval_anisotropic(NULL); - - return(wrap_up()); + return(wrap_up()); /* call wrapBSDF */ userr: fprintf(stderr, - "Usage: %s [-g Nlog2][-t pctcull][-l maxlobes] [bsdf.sir ..] > bsdf.xml\n", + "Usage: %s [{+|-}a][-g Nlog2][-t pctcull][-n nss][-s thresh][-l maxlobes][bsdf.sir ..] > bsdf.xml\n", progname); fprintf(stderr, - " or: %s -t{3|4} [-g Nlog2][-t pctcull][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", + " or: %s -t{3|4} [{+|-}a][-g Nlog2][-t pctcull][-n nss][-s thresh][{+|-}for[ward]][{+|-}b[ackward]][-e expr][-f file] bsdf_func > bsdf.xml\n", progname); return(1); }