11 |
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|
12 |
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#define MAXLATS 46 /* maximum number of latitudes */ |
13 |
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|
14 |
< |
/* BSDF angle specification (terminate with nphi = -1) */ |
14 |
> |
/* BSDF angle specification */ |
15 |
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typedef struct { |
16 |
< |
char name[32]; /* basis name */ |
16 |
> |
char name[64]; /* basis name */ |
17 |
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int nangles; /* total number of directions */ |
18 |
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struct { |
19 |
|
float tmin; /* starting theta */ |
21 |
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} lat[MAXLATS+1]; /* latitudes */ |
22 |
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} ANGLE_BASIS; |
23 |
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|
24 |
< |
#define NABASES 3 /* number of predefined bases */ |
24 |
> |
#define MAXABASES 3 /* limit on defined bases */ |
25 |
|
|
26 |
< |
ANGLE_BASIS abase_list[NABASES] = { |
26 |
> |
ANGLE_BASIS abase_list[MAXABASES] = { |
27 |
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{ |
28 |
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"LBNL/Klems Full", 145, |
29 |
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{ {-5., 1}, |
57 |
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} |
58 |
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}; |
59 |
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|
60 |
+ |
static int nabases = 3; /* current number of defined bases */ |
61 |
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|
62 |
+ |
|
63 |
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static int |
64 |
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ab_getvec( /* get vector for this angle basis index */ |
65 |
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FVECT v, |
77 |
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ndx -= ab->lat[li].nphis; |
78 |
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alt = PI/180.*0.5*(ab->lat[li].tmin + ab->lat[li+1].tmin); |
79 |
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azi = 2.*PI*ndx/ab->lat[li].nphis; |
80 |
< |
d = sin(alt); |
80 |
> |
v[2] = d = cos(alt); |
81 |
> |
d = sqrt(1. - d*d); /* sin(alt) */ |
82 |
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v[0] = cos(azi)*d; |
83 |
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v[1] = sin(azi)*d; |
81 |
– |
v[2] = cos(alt); |
84 |
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return(1); |
85 |
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} |
86 |
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|
95 |
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int li, ndx; |
96 |
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double alt, azi, d; |
97 |
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|
98 |
< |
if ((v[2] < 0.0) | (v[2] > 1.0)) |
98 |
> |
if ((v[2] < -1.0) | (v[2] > 1.0)) |
99 |
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return(-1); |
100 |
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alt = 180.0/PI*acos(v[2]); |
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azi = 180.0/PI*atan2(v[1], v[0]); |
126 |
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return(0); |
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for (li = 0; ndx >= ab->lat[li].nphis; li++) |
128 |
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ndx -= ab->lat[li].nphis; |
129 |
+ |
if (ab->lat[li].nphis == 1) { /* special case */ |
130 |
+ |
if (ab->lat[li].tmin > FTINY) |
131 |
+ |
error(USER, "unsupported BSDF coordinate system"); |
132 |
+ |
tdia = PI/180. * ab->lat[li+1].tmin; |
133 |
+ |
return(PI*tdia*tdia); |
134 |
+ |
} |
135 |
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tdia = PI/180.*(ab->lat[li+1].tmin - ab->lat[li].tmin); |
136 |
+ |
tdia *= sin(PI/180.*(ab->lat[li].tmin + ab->lat[li+1].tmin)); |
137 |
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pdia = 2.*PI/ab->lat[li].nphis; |
138 |
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return(tdia*pdia); |
139 |
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} |
151 |
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|
152 |
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v[0] = -v[0]; |
153 |
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v[1] = -v[1]; |
154 |
+ |
v[2] = -v[2]; |
155 |
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|
156 |
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return(1); |
157 |
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} |
167 |
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|
168 |
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v2[0] = -v[0]; |
169 |
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v2[1] = -v[1]; |
170 |
< |
v2[2] = v[2]; |
170 |
> |
v2[2] = -v[2]; |
171 |
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|
172 |
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return ab_getndx(v2, p); |
173 |
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} |
174 |
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|
175 |
+ |
|
176 |
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static void |
177 |
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load_bsdf_data( /* load BSDF distribution for this wavelength */ |
178 |
|
struct BSDF_data *dp, |
179 |
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ezxml_t wdb |
180 |
|
) |
181 |
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{ |
182 |
< |
const char *cbasis = ezxml_txt(ezxml_child(wdb,"ColumnAngleBasis")); |
183 |
< |
const char *rbasis = ezxml_txt(ezxml_child(wdb,"RowAngleBasis")); |
182 |
> |
char *cbasis = ezxml_txt(ezxml_child(wdb,"ColumnAngleBasis")); |
183 |
> |
char *rbasis = ezxml_txt(ezxml_child(wdb,"RowAngleBasis")); |
184 |
> |
char *sdata; |
185 |
|
int i; |
186 |
|
|
187 |
< |
for (i = NABASES; i--; ) |
187 |
> |
if ((cbasis == NULL) | (rbasis == NULL)) { |
188 |
> |
error(WARNING, "missing column/row basis for BSDF"); |
189 |
> |
return; |
190 |
> |
} |
191 |
> |
/* XXX need to add routines for loading in foreign bases */ |
192 |
> |
for (i = nabases; i--; ) |
193 |
|
if (!strcmp(cbasis, abase_list[i].name)) { |
194 |
|
dp->ninc = abase_list[i].nangles; |
195 |
|
dp->ib_priv = (void *)&abase_list[i]; |
196 |
< |
dp->ib_vec = ab_getvec; |
197 |
< |
dp->ib_ndx = ab_getndx; |
196 |
> |
dp->ib_vec = ab_getvecR; |
197 |
> |
dp->ib_ndx = ab_getndxR; |
198 |
|
dp->ib_ohm = ab_getohm; |
199 |
|
break; |
200 |
|
} |
201 |
|
if (i < 0) { |
202 |
< |
sprintf(errmsg, "unsupported incident basis '%s'", cbasis); |
203 |
< |
error(INTERNAL, errmsg); |
202 |
> |
sprintf(errmsg, "unsupported ColumnAngleBasis '%s'", cbasis); |
203 |
> |
error(WARNING, errmsg); |
204 |
> |
return; |
205 |
|
} |
206 |
< |
for (i = NABASES; i--; ) |
206 |
> |
for (i = nabases; i--; ) |
207 |
|
if (!strcmp(rbasis, abase_list[i].name)) { |
208 |
|
dp->nout = abase_list[i].nangles; |
209 |
|
dp->ob_priv = (void *)&abase_list[i]; |
210 |
< |
dp->ob_vec = ab_getvecR; |
211 |
< |
dp->ob_ndx = ab_getndxR; |
210 |
> |
dp->ob_vec = ab_getvec; |
211 |
> |
dp->ob_ndx = ab_getndx; |
212 |
|
dp->ob_ohm = ab_getohm; |
213 |
|
break; |
214 |
|
} |
215 |
|
if (i < 0) { |
216 |
< |
sprintf(errmsg, "unsupported exitant basis '%s'", cbasis); |
217 |
< |
error(INTERNAL, errmsg); |
216 |
> |
sprintf(errmsg, "unsupported RowAngleBasis '%s'", cbasis); |
217 |
> |
error(WARNING, errmsg); |
218 |
> |
return; |
219 |
|
} |
220 |
+ |
/* read BSDF data */ |
221 |
+ |
sdata = ezxml_txt(ezxml_child(wdb,"ScatteringData")); |
222 |
+ |
if (sdata == NULL) { |
223 |
+ |
error(WARNING, "missing BSDF ScatteringData"); |
224 |
+ |
return; |
225 |
+ |
} |
226 |
+ |
dp->bsdf = (float *)malloc(sizeof(float)*dp->ninc*dp->nout); |
227 |
+ |
if (dp->bsdf == NULL) |
228 |
+ |
error(SYSTEM, "out of memory in load_bsdf_data"); |
229 |
+ |
for (i = 0; i < dp->ninc*dp->nout; i++) { |
230 |
+ |
char *sdnext = fskip(sdata); |
231 |
+ |
if (sdnext == NULL) { |
232 |
+ |
error(WARNING, "bad/missing BSDF ScatteringData"); |
233 |
+ |
free(dp->bsdf); dp->bsdf = NULL; |
234 |
+ |
return; |
235 |
+ |
} |
236 |
+ |
while (*sdnext && isspace(*sdnext)) |
237 |
+ |
sdnext++; |
238 |
+ |
if (*sdnext == ',') sdnext++; |
239 |
+ |
dp->bsdf[i] = atof(sdata); |
240 |
+ |
sdata = sdnext; |
241 |
+ |
} |
242 |
+ |
while (isspace(*sdata)) |
243 |
+ |
sdata++; |
244 |
+ |
if (*sdata) { |
245 |
+ |
sprintf(errmsg, "%d extra characters after BSDF ScatteringData", |
246 |
+ |
strlen(sdata)); |
247 |
+ |
error(WARNING, errmsg); |
248 |
+ |
} |
249 |
|
} |
250 |
|
|
251 |
|
|
255 |
|
) |
256 |
|
{ |
257 |
|
char *path; |
258 |
< |
ezxml_t fl, wld, wdb; |
258 |
> |
ezxml_t fl, wtl, wld, wdb; |
259 |
|
struct BSDF_data *dp; |
260 |
|
|
261 |
|
path = getpath(fname, getrlibpath(), R_OK); |
271 |
|
return(NULL); |
272 |
|
} |
273 |
|
if (ezxml_error(fl)[0]) { |
274 |
< |
sprintf(errmsg, "BSDF \"%s\": %s", path, ezxml_error(fl)); |
274 |
> |
sprintf(errmsg, "BSDF \"%s\" %s", path, ezxml_error(fl)); |
275 |
|
error(WARNING, errmsg); |
276 |
|
ezxml_free(fl); |
277 |
|
return(NULL); |
278 |
|
} |
279 |
+ |
if (strcmp(ezxml_name(fl), "WindowElement")) { |
280 |
+ |
sprintf(errmsg, |
281 |
+ |
"BSDF \"%s\": top level node not 'WindowElement'", |
282 |
+ |
path); |
283 |
+ |
error(WARNING, errmsg); |
284 |
+ |
ezxml_free(fl); |
285 |
+ |
return(NULL); |
286 |
+ |
} |
287 |
+ |
wtl = ezxml_child(ezxml_child(fl, "Optical"), "Layer"); |
288 |
|
dp = (struct BSDF_data *)calloc(1, sizeof(struct BSDF_data)); |
289 |
< |
for (wld = ezxml_child(fl, "WavelengthData"); |
290 |
< |
fl != NULL; fl = fl->next) { |
289 |
> |
for (wld = ezxml_child(wtl, "WavelengthData"); |
290 |
> |
wld != NULL; wld = wld->next) { |
291 |
|
if (strcmp(ezxml_txt(ezxml_child(wld,"Wavelength")), "Visible")) |
292 |
|
continue; |
293 |
|
wdb = ezxml_child(wld, "WavelengthDataBlock"); |
343 |
|
v[j] += rad*(2.*pert[j] - 1.); |
344 |
|
if (xm != NULL) |
345 |
|
multv3(v, v, xm); |
346 |
< |
normalize(v); |
290 |
< |
return(1); |
346 |
> |
return(normalize(v) != 0.0); |
347 |
|
} |
348 |
|
|
349 |
|
|
368 |
|
v[j] += rad*(2.*pert[j] - 1.); |
369 |
|
if (xm != NULL) |
370 |
|
multv3(v, v, xm); |
371 |
< |
normalize(v); |
316 |
< |
return(1); |
371 |
> |
return(normalize(v) != 0.0); |
372 |
|
} |
373 |
|
|
374 |
|
|
387 |
|
char **xfp = xfarg; |
388 |
|
double theta; |
389 |
|
|
390 |
+ |
if (yp[2]*yp[2] + zp[2]*zp[2] < 2.*FTINY*FTINY) { |
391 |
+ |
/* Special case for X' along Z-axis */ |
392 |
+ |
theta = -atan2(yp[0], yp[1]); |
393 |
+ |
*xfp++ = "-ry"; |
394 |
+ |
*xfp++ = xp[2] < 0.0 ? "90" : "-90"; |
395 |
+ |
*xfp++ = "-rz"; |
396 |
+ |
sprintf(bufs[bn], "%f", theta*(180./PI)); |
397 |
+ |
*xfp++ = bufs[bn++]; |
398 |
+ |
return(xfp - xfarg); |
399 |
+ |
} |
400 |
|
theta = atan2(yp[2], zp[2]); |
401 |
|
if (!FEQ(theta,0.0)) { |
402 |
|
*xfp++ = "-rx"; |
452 |
|
updir[2] = 1.; |
453 |
|
break; |
454 |
|
case UDunknown: |
390 |
– |
error(WARNING, "unspecified up direction"); |
455 |
|
return(0); |
456 |
|
} |
457 |
|
fcross(xdest, updir, nrm); |
530 |
|
nout++; |
531 |
|
continue; |
532 |
|
} |
533 |
< |
wt = BSDF_visible(b, i, o); |
533 |
> |
wt = BSDF_value(b, i, o); |
534 |
|
copycolor(col, cinc); |
535 |
|
scalecolor(col, wt); |
536 |
|
csum = &distarr[3*(k*nazi + j)]; |