| 26 |
|
int |
| 27 |
|
main(int argc, char *argv[]) |
| 28 |
|
{ |
| 29 |
+ |
int showPeaks = 0; |
| 30 |
|
char buf[128]; |
| 31 |
|
FILE *fp; |
| 32 |
|
RBFNODE *rbf; |
| 35 |
|
int i, j, n; |
| 36 |
|
|
| 37 |
|
progname = argv[0]; |
| 38 |
+ |
if (argc > 1 && !strcmp(argv[1], "-p")) { |
| 39 |
+ |
++showPeaks; |
| 40 |
+ |
++argv; --argc; |
| 41 |
+ |
} |
| 42 |
|
if (argc < 4) { |
| 43 |
< |
fprintf(stderr, "Usage: %s bsdf.sir theta1 phi1 .. > output.rad\n", argv[0]); |
| 43 |
> |
fprintf(stderr, "Usage: %s [-p] bsdf.sir theta1 phi1 .. > output.rad\n", progname); |
| 44 |
|
return(1); |
| 45 |
|
} |
| 46 |
|
/* load input */ |
| 47 |
|
if ((fp = fopen(argv[1], "rb")) == NULL) { |
| 48 |
|
fprintf(stderr, "%s: cannot open BSDF interpolant '%s'\n", |
| 49 |
< |
argv[0], argv[1]); |
| 49 |
> |
progname, argv[1]); |
| 50 |
|
return(1); |
| 51 |
|
} |
| 52 |
|
if (!load_bsdf_rep(fp)) |
| 53 |
|
return(1); |
| 54 |
|
fclose(fp); |
| 55 |
|
min_log = log(bsdf_min*.5); |
| 56 |
< |
/* output surface(s) */ |
| 56 |
> |
/* output BSDF rep. */ |
| 57 |
|
for (n = 0; (n < 6) & (2*n+3 < argc); n++) { |
| 53 |
– |
printf("void trans tmat\n0\n0\n7 %f %f %f .04 .04 .9 1\n", |
| 54 |
– |
colarr[n][0], colarr[n][1], colarr[n][2]); |
| 55 |
– |
fflush(stdout); |
| 56 |
– |
sprintf(buf, "gensurf tmat bsdf - - - %d %d", GRIDRES-1, GRIDRES-1); |
| 57 |
– |
fp = popen(buf, "w"); |
| 58 |
– |
if (fp == NULL) { |
| 59 |
– |
fprintf(stderr, "%s: cannot open '| %s'\n", argv[0], buf); |
| 60 |
– |
return(1); |
| 61 |
– |
} |
| 58 |
|
dir[2] = sin((M_PI/180.)*atof(argv[2*n+2])); |
| 59 |
|
dir[0] = dir[2] * cos((M_PI/180.)*atof(argv[2*n+3])); |
| 60 |
|
dir[1] = dir[2] * sin((M_PI/180.)*atof(argv[2*n+3])); |
| 61 |
|
dir[2] = input_orient * sqrt(1. - dir[2]*dir[2]); |
| 62 |
+ |
#ifdef DEBUG |
| 63 |
|
fprintf(stderr, "Computing DSF for incident direction (%.1f,%.1f)\n", |
| 64 |
|
get_theta180(dir), get_phi360(dir)); |
| 65 |
+ |
#endif |
| 66 |
|
rbf = advect_rbf(dir, 15000); |
| 67 |
+ |
#ifdef DEBUG |
| 68 |
|
if (rbf == NULL) |
| 69 |
|
fputs("NULL RBF\n", stderr); |
| 70 |
|
else |
| 71 |
|
fprintf(stderr, "Hemispherical reflectance: %.3f\n", rbf->vtotal); |
| 72 |
+ |
#endif |
| 73 |
+ |
printf("void trans tmat\n0\n0\n7 %f %f %f .04 .04 .9 1\n", |
| 74 |
+ |
colarr[n][0], colarr[n][1], colarr[n][2]); |
| 75 |
+ |
if (showPeaks && rbf != NULL) { |
| 76 |
+ |
printf("void plastic pmat\n0\n0\n5 %f %f %f .04 .08\n", |
| 77 |
+ |
1.-colarr[n][0], 1.-colarr[n][1], 1.-colarr[n][2]); |
| 78 |
+ |
for (i = 0; i < rbf->nrbf; i++) { |
| 79 |
+ |
ovec_from_pos(dir, rbf->rbfa[i].gx, rbf->rbfa[i].gy); |
| 80 |
+ |
bsdf = eval_rbfrep(rbf, dir) / (output_orient*dir[2]); |
| 81 |
+ |
bsdf = log(bsdf) - min_log; |
| 82 |
+ |
printf("pmat sphere p%d\n0\n0\n4 %f %f %f %f\n", |
| 83 |
+ |
i+1, dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf, |
| 84 |
+ |
.007*bsdf); |
| 85 |
+ |
} |
| 86 |
+ |
} |
| 87 |
+ |
fflush(stdout); |
| 88 |
+ |
sprintf(buf, "gensurf tmat bsdf - - - %d %d", GRIDRES-1, GRIDRES-1); |
| 89 |
+ |
fp = popen(buf, "w"); |
| 90 |
+ |
if (fp == NULL) { |
| 91 |
+ |
fprintf(stderr, "%s: cannot open '| %s'\n", progname, buf); |
| 92 |
+ |
return(1); |
| 93 |
+ |
} |
| 94 |
|
for (i = 0; i < GRIDRES; i++) |
| 95 |
|
for (j = 0; j < GRIDRES; j++) { |
| 96 |
|
ovec_from_pos(dir, i, j); |
