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#include <math.h> |
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#include "platform.h" |
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#include "bsdfrep.h" |
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#include "resolu.h" |
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/* global argv[0] */ |
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char *progname; |
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|
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long dstart; /* data start offset in file */ |
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} PGINPUT; |
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|
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double angle_eps = 0; /* epsilon for angle comparisons */ |
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|
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PGINPUT *inpfile; /* input files sorted by incidence */ |
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int ninpfiles; /* number of input files */ |
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|
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const PGINPUT *inp1 = (const PGINPUT *)p1; |
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const PGINPUT *inp2 = (const PGINPUT *)p2; |
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|
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if (inp1->theta > inp2->theta+FTINY) |
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if (inp1->theta > inp2->theta+angle_eps) |
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return(1); |
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if (inp1->theta < inp2->theta-FTINY) |
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if (inp1->theta < inp2->theta-angle_eps) |
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return(-1); |
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if (inp1->phi > inp2->phi+FTINY) |
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if (inp1->phi > inp2->phi+angle_eps) |
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return(1); |
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if (inp1->phi < inp2->phi-FTINY) |
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if (inp1->phi < inp2->phi-angle_eps) |
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return(-1); |
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return(0); |
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} |
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static int |
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add_pabopto_inp(const int i) |
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{ |
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FILE *fp = fopen(inpfile[i].fname, "r"); |
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double theta_out, phi_out, val; |
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int n, c; |
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static int lastnew = -1; |
118 |
> |
FILE *fp = fopen(inpfile[i].fname, "r"); |
119 |
> |
double theta_out, phi_out, val; |
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> |
int n, c; |
121 |
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|
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if (fp == NULL || fseek(fp, inpfile[i].dstart, 0) == EOF) { |
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fputs(inpfile[i].fname, stderr); |
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return(0); |
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} |
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/* prepare input grid */ |
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< |
if (!i || cmp_inang(&inpfile[i-1], &inpfile[i])) { |
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if (i) /* need to process previous incidence */ |
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> |
angle_eps = 180./2./GRIDRES; |
129 |
> |
if (lastnew < 0 || cmp_inang(&inpfile[lastnew], &inpfile[i])) { |
130 |
> |
if (lastnew >= 0) /* need to process previous incidence */ |
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make_rbfrep(); |
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#ifdef DEBUG |
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fprintf(stderr, "New incident (theta,phi)=(%f,%f)\n", |
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inpfile[i].theta, inpfile[i].phi); |
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#endif |
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new_bsdf_data(inpfile[i].theta, inpfile[i].phi); |
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lastnew = i; |
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} |
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#ifdef DEBUG |
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fprintf(stderr, "Loading measurements from '%s'...\n", inpfile[i].fname); |
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for (i = 0; i < ninpfiles; i++) |
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if (!init_pabopto_inp(i, argv[i+1])) |
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return(1); |
189 |
+ |
angle_eps = 0; |
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qsort(inpfile, ninpfiles, sizeof(PGINPUT), &cmp_inang); |
191 |
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/* compile measurements */ |
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for (i = 0; i < ninpfiles; i++) |
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#ifdef DEBUG |
227 |
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fprintf(stderr, "Minimum BSDF = %.4f\n", bsdf_min); |
228 |
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#endif |
229 |
+ |
min_log = log(bsdf_min*.5 + 1e-5); |
230 |
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#if 1 /* produce spheres at meas. */ |
231 |
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puts("void plastic yellow\n0\n0\n5 .6 .4 .01 .04 .08\n"); |
224 |
– |
min_log = log(bsdf_min*.5); |
232 |
|
n = 0; |
233 |
|
for (i = 0; i < GRIDRES; i++) |
234 |
|
for (j = 0; j < GRIDRES; j++) |
235 |
< |
if (dsf_grid[i][j].nval > 0) { |
235 |
> |
if (dsf_grid[i][j].sum.n > 0) { |
236 |
|
ovec_from_pos(dir, i, j); |
237 |
< |
bsdf = dsf_grid[i][j].vsum / |
238 |
< |
(dsf_grid[i][j].nval*output_orient*dir[2]); |
237 |
> |
bsdf = dsf_grid[i][j].sum.v / |
238 |
> |
(dsf_grid[i][j].sum.n*output_orient*dir[2]); |
239 |
|
if (bsdf <= bsdf_min*.6) |
240 |
|
continue; |
241 |
< |
bsdf = log(bsdf) - min_log; |
241 |
> |
bsdf = log(bsdf + 1e-5) - min_log; |
242 |
|
ovec_from_pos(dir, i, j); |
243 |
|
printf("yellow sphere s%04d\n0\n0\n", ++n); |
244 |
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printf("4 %.6g %.6g %.6g %.6g\n\n", |
252 |
|
RBFVAL *rbf = &dsf_list->rbfa[n]; |
253 |
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ovec_from_pos(dir, rbf->gx, rbf->gy); |
254 |
|
bsdf = eval_rbfrep(dsf_list, dir) / (output_orient*dir[2]); |
255 |
< |
bsdf = log(bsdf) - min_log; |
255 |
> |
bsdf = log(bsdf + 1e-5) - min_log; |
256 |
|
printf("red sphere p%04d\n0\n0\n", ++n); |
257 |
|
printf("4 %.6g %.6g %.6g %.6g\n\n", |
258 |
|
dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf, |
272 |
|
for (j = 0; j < GRIDRES; j++) { |
273 |
|
ovec_from_pos(dir, i, j); |
274 |
|
bsdf = eval_rbfrep(dsf_list, dir) / (output_orient*dir[2]); |
275 |
< |
bsdf = log(bsdf) - min_log; |
275 |
> |
bsdf = log(bsdf + 1e-5) - min_log; |
276 |
|
fprintf(pfp, "%.8e %.8e %.8e\n", |
277 |
|
dir[0]*bsdf, dir[1]*bsdf, dir[2]*bsdf); |
278 |
|
} |