11 |
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#include <stdlib.h> |
12 |
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#include <string.h> |
13 |
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#include <ctype.h> |
14 |
+ |
#include <math.h> |
15 |
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#include "platform.h" |
16 |
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#include "bsdfrep.h" |
17 |
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#include "resolu.h" |
18 |
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/* global argv[0] */ |
19 |
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char *progname; |
20 |
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|
25 |
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long dstart; /* data start offset in file */ |
26 |
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} PGINPUT; |
27 |
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|
28 |
+ |
double angle_eps = 0; /* epsilon for angle comparisons */ |
29 |
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|
30 |
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PGINPUT *inpfile; /* input files sorted by incidence */ |
31 |
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int ninpfiles; /* number of input files */ |
32 |
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|
37 |
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const PGINPUT *inp1 = (const PGINPUT *)p1; |
38 |
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const PGINPUT *inp2 = (const PGINPUT *)p2; |
39 |
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|
40 |
< |
if (inp1->theta > inp2->theta+FTINY) |
40 |
> |
if (inp1->theta > inp2->theta+angle_eps) |
41 |
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return(1); |
42 |
< |
if (inp1->theta < inp2->theta-FTINY) |
42 |
> |
if (inp1->theta < inp2->theta-angle_eps) |
43 |
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return(-1); |
44 |
< |
if (inp1->phi > inp2->phi+FTINY) |
44 |
> |
if (inp1->phi > inp2->phi+angle_eps) |
45 |
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return(1); |
46 |
< |
if (inp1->phi < inp2->phi-FTINY) |
46 |
> |
if (inp1->phi < inp2->phi-angle_eps) |
47 |
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return(-1); |
48 |
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return(0); |
49 |
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} |
66 |
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inpfile[i].theta = inpfile[i].phi = -10001.; |
67 |
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/* read header information */ |
68 |
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while ((c = getc(fp)) == '#' || c == EOF) { |
69 |
+ |
char typ[32]; |
70 |
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if (fgets(buf, sizeof(buf), fp) == NULL) { |
71 |
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fputs(fname, stderr); |
72 |
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fputs(": unexpected EOF\n", stderr); |
73 |
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fclose(fp); |
74 |
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return(0); |
75 |
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} |
76 |
< |
if (!strcmp(buf, "format: theta phi DSF\n")) { |
72 |
< |
inpfile[i].isDSF = 1; |
76 |
> |
if (sscanf(buf, "sample_name \"%[^\"]\"", bsdf_name) == 1) |
77 |
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continue; |
78 |
+ |
if (sscanf(buf, "format: theta phi %s", typ) == 1) { |
79 |
+ |
if (!strcasecmp(typ, "DSF")) { |
80 |
+ |
inpfile[i].isDSF = 1; |
81 |
+ |
continue; |
82 |
+ |
} |
83 |
+ |
if (!strcasecmp(typ, "BSDF")) { |
84 |
+ |
inpfile[i].isDSF = 0; |
85 |
+ |
continue; |
86 |
+ |
} |
87 |
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} |
75 |
– |
if (!strcmp(buf, "format: theta phi BSDF\n")) { |
76 |
– |
inpfile[i].isDSF = 0; |
77 |
– |
continue; |
78 |
– |
} |
88 |
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if (sscanf(buf, "intheta %lf", &inpfile[i].theta) == 1) |
89 |
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continue; |
90 |
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if (sscanf(buf, "inphi %lf", &inpfile[i].phi) == 1) |
105 |
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fputs(": unknown incident angle\n", stderr); |
106 |
|
return(0); |
107 |
|
} |
108 |
+ |
while (inpfile[i].phi < 0) /* normalize phi direction */ |
109 |
+ |
inpfile[i].phi += 360.; |
110 |
|
return(1); |
111 |
|
} |
112 |
|
|
124 |
|
return(0); |
125 |
|
} |
126 |
|
/* prepare input grid */ |
127 |
+ |
angle_eps = 180./2./GRIDRES; |
128 |
|
if (!i || cmp_inang(&inpfile[i-1], &inpfile[i])) { |
129 |
|
if (i) /* need to process previous incidence */ |
130 |
|
make_rbfrep(); |
151 |
|
return(1); |
152 |
|
} |
153 |
|
|
154 |
+ |
#ifndef TEST_MAIN |
155 |
|
/* Read in PAB-Opto BSDF files and output RBF interpolant */ |
156 |
|
int |
157 |
|
main(int argc, char *argv[]) |
184 |
|
for (i = 0; i < ninpfiles; i++) |
185 |
|
if (!init_pabopto_inp(i, argv[i+1])) |
186 |
|
return(1); |
187 |
+ |
angle_eps = 0; |
188 |
|
qsort(inpfile, ninpfiles, sizeof(PGINPUT), &cmp_inang); |
189 |
|
/* compile measurements */ |
190 |
|
for (i = 0; i < ninpfiles; i++) |
199 |
|
progname); |
200 |
|
return(1); |
201 |
|
} |
202 |
+ |
#else |
203 |
+ |
/* Test main produces a Radiance model from the given input file */ |
204 |
+ |
int |
205 |
+ |
main(int argc, char *argv[]) |
206 |
+ |
{ |
207 |
+ |
PGINPUT pginp; |
208 |
+ |
char buf[128]; |
209 |
+ |
FILE *pfp; |
210 |
+ |
double bsdf, min_log; |
211 |
+ |
FVECT dir; |
212 |
+ |
int i, j, n; |
213 |
+ |
|
214 |
+ |
if (argc != 2) { |
215 |
+ |
fprintf(stderr, "Usage: %s input.dat > output.rad\n", argv[0]); |
216 |
+ |
return(1); |
217 |
+ |
} |
218 |
+ |
ninpfiles = 1; |
219 |
+ |
inpfile = &pginp; |
220 |
+ |
if (!init_pabopto_inp(0, argv[1]) || !add_pabopto_inp(0)) |
221 |
+ |
return(1); |
222 |
+ |
/* reduce data set */ |
223 |
+ |
make_rbfrep(); |
224 |
+ |
#ifdef DEBUG |
225 |
+ |
fprintf(stderr, "Minimum BSDF = %.4f\n", bsdf_min); |
226 |
+ |
#endif |
227 |
+ |
min_log = log(bsdf_min*.5 + 1e-5); |
228 |
+ |
#if 1 /* produce spheres at meas. */ |
229 |
+ |
puts("void plastic yellow\n0\n0\n5 .6 .4 .01 .04 .08\n"); |
230 |
+ |
n = 0; |
231 |
+ |
for (i = 0; i < GRIDRES; i++) |
232 |
+ |
for (j = 0; j < GRIDRES; j++) |
233 |
+ |
if (dsf_grid[i][j].sum.n > 0) { |
234 |
+ |
ovec_from_pos(dir, i, j); |
235 |
+ |
bsdf = dsf_grid[i][j].sum.v / |
236 |
+ |
(dsf_grid[i][j].sum.n*output_orient*dir[2]); |
237 |
+ |
if (bsdf <= bsdf_min*.6) |
238 |
+ |
continue; |
239 |
+ |
bsdf = log(bsdf + 1e-5) - min_log; |
240 |
+ |
ovec_from_pos(dir, i, j); |
241 |
+ |
printf("yellow sphere s%04d\n0\n0\n", ++n); |
242 |
+ |
printf("4 %.6g %.6g %.6g %.6g\n\n", |
243 |
+ |
dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf, |
244 |
+ |
.007*bsdf); |
245 |
+ |
} |
246 |
+ |
#endif |
247 |
+ |
#if 1 /* spheres at RBF peaks */ |
248 |
+ |
puts("void plastic red\n0\n0\n5 .8 .01 .01 .04 .08\n"); |
249 |
+ |
for (n = 0; n < dsf_list->nrbf; n++) { |
250 |
+ |
RBFVAL *rbf = &dsf_list->rbfa[n]; |
251 |
+ |
ovec_from_pos(dir, rbf->gx, rbf->gy); |
252 |
+ |
bsdf = eval_rbfrep(dsf_list, dir) / (output_orient*dir[2]); |
253 |
+ |
bsdf = log(bsdf + 1e-5) - min_log; |
254 |
+ |
printf("red sphere p%04d\n0\n0\n", ++n); |
255 |
+ |
printf("4 %.6g %.6g %.6g %.6g\n\n", |
256 |
+ |
dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf, |
257 |
+ |
.011*bsdf); |
258 |
+ |
} |
259 |
+ |
#endif |
260 |
+ |
#if 1 /* output continuous surface */ |
261 |
+ |
puts("void trans tgreen\n0\n0\n7 .7 1 .7 .04 .04 .9 1\n"); |
262 |
+ |
fflush(stdout); |
263 |
+ |
sprintf(buf, "gensurf tgreen bsdf - - - %d %d", GRIDRES-1, GRIDRES-1); |
264 |
+ |
pfp = popen(buf, "w"); |
265 |
+ |
if (pfp == NULL) { |
266 |
+ |
fprintf(stderr, "%s: cannot open '| %s'\n", argv[0], buf); |
267 |
+ |
return(1); |
268 |
+ |
} |
269 |
+ |
for (i = 0; i < GRIDRES; i++) |
270 |
+ |
for (j = 0; j < GRIDRES; j++) { |
271 |
+ |
ovec_from_pos(dir, i, j); |
272 |
+ |
bsdf = eval_rbfrep(dsf_list, dir) / (output_orient*dir[2]); |
273 |
+ |
bsdf = log(bsdf + 1e-5) - min_log; |
274 |
+ |
fprintf(pfp, "%.8e %.8e %.8e\n", |
275 |
+ |
dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf); |
276 |
+ |
} |
277 |
+ |
if (pclose(pfp) != 0) |
278 |
+ |
return(1); |
279 |
+ |
#endif |
280 |
+ |
return(0); |
281 |
+ |
} |
282 |
+ |
#endif |