19 |
|
/* global argv[0] */ |
20 |
|
char *progname; |
21 |
|
/* percentage to cull (<0 to turn off) */ |
22 |
< |
double pctcull = 90.; |
22 |
> |
static double pctcull = 90.; |
23 |
|
/* sampling order */ |
24 |
< |
int samp_order = 6; |
24 |
> |
static int samp_order = 6; |
25 |
|
/* super-sampling threshold */ |
26 |
|
const double ssamp_thresh = 0.35; |
27 |
|
/* number of super-samples */ |
28 |
< |
const int nssamp = 100; |
28 |
> |
#ifndef NSSAMP |
29 |
> |
#define NSSAMP 100 |
30 |
> |
#endif |
31 |
|
/* limit on number of RBF lobes */ |
32 |
|
static int lobe_lim = 15000; |
33 |
|
/* progress bar length */ |
34 |
|
static int do_prog = 79; |
35 |
|
|
36 |
|
|
37 |
+ |
|
38 |
|
/* Start new progress bar */ |
39 |
|
#define prog_start(s) if (do_prog) fprintf(stderr, "%s: %s...\n", progname, s); else |
40 |
|
|
42 |
|
static void |
43 |
|
prog_show(double frac) |
44 |
|
{ |
45 |
< |
char pbar[256]; |
46 |
< |
int nchars; |
45 |
> |
static unsigned call_cnt = 0; |
46 |
> |
static char lastc[] = "-\\|/"; |
47 |
> |
char pbar[256]; |
48 |
> |
int nchars; |
49 |
|
|
50 |
< |
if (do_prog <= 0) return; |
50 |
> |
if (do_prog <= 1) return; |
51 |
|
if (do_prog > sizeof(pbar)-2) |
52 |
|
do_prog = sizeof(pbar)-2; |
53 |
|
if (frac < 0) frac = 0; |
54 |
< |
else if (frac > 1) frac = 1; |
55 |
< |
nchars = do_prog*frac + .5; |
54 |
> |
else if (frac >= 1) frac = .9999; |
55 |
> |
nchars = do_prog*frac; |
56 |
|
pbar[0] = '\r'; |
57 |
|
memset(pbar+1, '*', nchars); |
58 |
< |
memset(pbar+1+nchars, '-', do_prog-nchars); |
58 |
> |
pbar[nchars+1] = lastc[call_cnt++ & 3]; |
59 |
> |
memset(pbar+2+nchars, '-', do_prog-nchars-1); |
60 |
|
pbar[do_prog+1] = '\0'; |
61 |
|
fputs(pbar, stderr); |
62 |
|
} |
74 |
|
fputc('\r', stderr); |
75 |
|
} |
76 |
|
|
71 |
– |
/* Output XML prologue to stdout */ |
72 |
– |
static void |
73 |
– |
xml_prologue(int ac, char *av[]) |
74 |
– |
{ |
75 |
– |
puts("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); |
76 |
– |
puts("<WindowElement xmlns=\"http://windows.lbl.gov\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://windows.lbl.gov/BSDF-v1.4.xsd\">"); |
77 |
– |
fputs("<!-- File produced by:", stdout); |
78 |
– |
while (ac-- > 0) { |
79 |
– |
fputc(' ', stdout); |
80 |
– |
fputs(*av++, stdout); |
81 |
– |
} |
82 |
– |
puts(" -->"); |
83 |
– |
puts("<WindowElementType>System</WindowElementType>"); |
84 |
– |
puts("<FileType>BSDF</FileType>"); |
85 |
– |
puts("<Optical>"); |
86 |
– |
puts("<Layer>"); |
87 |
– |
puts("\t<Material>"); |
88 |
– |
printf("\t\t<Name>%s</Name>\n", bsdf_name[0] ? bsdf_name : "Unknown"); |
89 |
– |
printf("\t\t<Manufacturer>%s</Manufacturer>\n", |
90 |
– |
bsdf_manuf[0] ? bsdf_manuf : "Unknown"); |
91 |
– |
puts("\t\t<DeviceType>Other</DeviceType>"); |
92 |
– |
puts("\t</Material>"); |
93 |
– |
puts("\t<DataDefinition>"); |
94 |
– |
printf("\t\t<IncidentDataStructure>TensorTree%c</IncidentDataStructure>\n", |
95 |
– |
single_plane_incident ? '3' : '4'); |
96 |
– |
puts("\t</DataDefinition>"); |
97 |
– |
} |
98 |
– |
|
99 |
– |
/* Output XML data prologue to stdout */ |
100 |
– |
static void |
101 |
– |
data_prologue() |
102 |
– |
{ |
103 |
– |
static const char *bsdf_type[4] = { |
104 |
– |
"Reflection Front", |
105 |
– |
"Transmission Front", |
106 |
– |
"Transmission Back", |
107 |
– |
"Reflection Back" |
108 |
– |
}; |
109 |
– |
|
110 |
– |
puts("\t<WavelengthData>"); |
111 |
– |
puts("\t\t<LayerNumber>System</LayerNumber>"); |
112 |
– |
puts("\t\t<Wavelength unit=\"Integral\">Visible</Wavelength>"); |
113 |
– |
puts("\t\t<SourceSpectrum>CIE Illuminant D65 1nm.ssp</SourceSpectrum>"); |
114 |
– |
puts("\t\t<DetectorSpectrum>ASTM E308 1931 Y.dsp</DetectorSpectrum>"); |
115 |
– |
puts("\t\t<WavelengthDataBlock>"); |
116 |
– |
printf("\t\t\t<WavelengthDataDirection>%s</WavelengthDataDirection>\n", |
117 |
– |
bsdf_type[(input_orient>0)<<1 | (output_orient>0)]); |
118 |
– |
puts("\t\t\t<AngleBasis>LBNL/Shirley-Chiu</AngleBasis>"); |
119 |
– |
puts("\t\t\t<ScatteringDataType>BTDF</ScatteringDataType>"); |
120 |
– |
puts("\t\t\t<ScatteringData>"); |
121 |
– |
} |
122 |
– |
|
123 |
– |
/* Output XML data epilogue to stdout */ |
124 |
– |
static void |
125 |
– |
data_epilogue(void) |
126 |
– |
{ |
127 |
– |
puts("\t\t\t</ScatteringData>"); |
128 |
– |
puts("\t\t</WavelengthDataBlock>"); |
129 |
– |
puts("\t</WavelengthData>"); |
130 |
– |
} |
131 |
– |
|
132 |
– |
/* Output XML epilogue to stdout */ |
133 |
– |
static void |
134 |
– |
xml_epilogue(void) |
135 |
– |
{ |
136 |
– |
puts("</Layer>"); |
137 |
– |
puts("</Optical>"); |
138 |
– |
puts("</WindowElement>"); |
139 |
– |
} |
140 |
– |
|
77 |
|
/* Compute absolute relative difference */ |
78 |
|
static double |
79 |
|
abs_diff(double v1, double v0) |
133 |
|
iovec[5] = output_orient * |
134 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
135 |
|
if (funame == NULL) |
136 |
< |
bsdf = eval_rbfrep(rbf, iovec+3) * |
201 |
< |
output_orient/iovec[5]; |
136 |
> |
bsdf = eval_rbfrep(rbf, iovec+3); |
137 |
|
else { |
203 |
– |
double ssa[3], ssvec[6], sum; |
204 |
– |
int ssi; |
138 |
|
if (assignD) { |
139 |
|
varset("Dx", '=', -iovec[3]); |
140 |
|
varset("Dy", '=', -iovec[4]); |
142 |
|
++eclock; |
143 |
|
} |
144 |
|
bsdf = funvalue(funame, 6, iovec); |
145 |
+ |
#if (NSSAMP > 0) |
146 |
|
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
147 |
< |
sum = 0; /* super-sample voxel */ |
148 |
< |
for (ssi = nssamp; ssi--; ) { |
149 |
< |
SDmultiSamp(ssa, 3, (ssi+frandom())/nssamp); |
147 |
> |
int ssi; |
148 |
> |
double ssa[3], ssvec[6], sum = 0; |
149 |
> |
/* super-sample voxel */ |
150 |
> |
for (ssi = NSSAMP; ssi--; ) { |
151 |
> |
SDmultiSamp(ssa, 3, (ssi+frandom()) * |
152 |
> |
(1./NSSAMP)); |
153 |
|
ssvec[0] = 2.*(ix+ssa[0])/sqres - 1.; |
154 |
|
ssvec[1] = .0; |
155 |
|
ssvec[2] = input_orient * |
160 |
|
sqrt(1. - ssvec[3]*ssvec[3] - |
161 |
|
ssvec[4]*ssvec[4]); |
162 |
|
if (assignD) { |
163 |
< |
varset("Dx", '=', -iovec[3]); |
164 |
< |
varset("Dy", '=', -iovec[4]); |
165 |
< |
varset("Dz", '=', -iovec[5]); |
163 |
> |
varset("Dx", '=', -ssvec[3]); |
164 |
> |
varset("Dy", '=', -ssvec[4]); |
165 |
> |
varset("Dz", '=', -ssvec[5]); |
166 |
|
++eclock; |
167 |
|
} |
168 |
|
sum += funvalue(funame, 6, ssvec); |
169 |
|
} |
170 |
< |
bsdf = sum/nssamp; |
170 |
> |
bsdf = sum/NSSAMP; |
171 |
|
} |
172 |
+ |
#endif |
173 |
|
} |
174 |
|
if (pctcull >= 0) |
175 |
|
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |
246 |
|
iovec[5] = output_orient * |
247 |
|
sqrt(1. - iovec[3]*iovec[3] - iovec[4]*iovec[4]); |
248 |
|
if (funame == NULL) |
249 |
< |
bsdf = eval_rbfrep(rbf, iovec+3) * |
312 |
< |
output_orient/iovec[5]; |
249 |
> |
bsdf = eval_rbfrep(rbf, iovec+3); |
250 |
|
else { |
314 |
– |
double ssa[4], ssvec[6], sum; |
315 |
– |
int ssi; |
251 |
|
if (assignD) { |
252 |
|
varset("Dx", '=', -iovec[3]); |
253 |
|
varset("Dy", '=', -iovec[4]); |
255 |
|
++eclock; |
256 |
|
} |
257 |
|
bsdf = funvalue(funame, 6, iovec); |
258 |
+ |
#if (NSSAMP > 0) |
259 |
|
if (abs_diff(bsdf, last_bsdf) > ssamp_thresh) { |
260 |
< |
sum = 0; /* super-sample voxel */ |
261 |
< |
for (ssi = nssamp; ssi--; ) { |
262 |
< |
SDmultiSamp(ssa, 4, (ssi+frandom())/nssamp); |
260 |
> |
int ssi; |
261 |
> |
double ssa[4], ssvec[6], sum = 0; |
262 |
> |
/* super-sample voxel */ |
263 |
> |
for (ssi = NSSAMP; ssi--; ) { |
264 |
> |
SDmultiSamp(ssa, 4, (ssi+frandom()) * |
265 |
> |
(1./NSSAMP)); |
266 |
|
SDsquare2disk(ssvec, 1.-(ix+ssa[0])/sqres, |
267 |
|
1.-(iy+ssa[1])/sqres); |
268 |
< |
ssvec[2] = output_orient * |
268 |
> |
ssvec[2] = input_orient * |
269 |
|
sqrt(1. - ssvec[0]*ssvec[0] - |
270 |
|
ssvec[1]*ssvec[1]); |
271 |
|
SDsquare2disk(ssvec+3, (ox+ssa[2])/sqres, |
274 |
|
sqrt(1. - ssvec[3]*ssvec[3] - |
275 |
|
ssvec[4]*ssvec[4]); |
276 |
|
if (assignD) { |
277 |
< |
varset("Dx", '=', -iovec[3]); |
278 |
< |
varset("Dy", '=', -iovec[4]); |
279 |
< |
varset("Dz", '=', -iovec[5]); |
277 |
> |
varset("Dx", '=', -ssvec[3]); |
278 |
> |
varset("Dy", '=', -ssvec[4]); |
279 |
> |
varset("Dz", '=', -ssvec[5]); |
280 |
|
++eclock; |
281 |
|
} |
282 |
|
sum += funvalue(funame, 6, ssvec); |
283 |
|
} |
284 |
< |
bsdf = sum/nssamp; |
284 |
> |
bsdf = sum/NSSAMP; |
285 |
|
} |
286 |
+ |
#endif |
287 |
|
} |
288 |
|
if (pctcull >= 0) |
289 |
|
fwrite(&bsdf, sizeof(bsdf), 1, ofp); |