19 |
|
#include "otypes.h" |
20 |
|
#include "rtotypes.h" |
21 |
|
#include "random.h" |
22 |
+ |
#include "pmapmat.h" |
23 |
|
|
24 |
|
#ifndef MAXITER |
25 |
|
#define MAXITER 10 /* maximum # specular ray attempts */ |
26 |
|
#endif |
27 |
|
/* estimate of Fresnel function */ |
28 |
< |
#define FRESNE(ci) (exp(-5.85*(ci)) - 0.00287989916) |
28 |
> |
#define FRESNE(ci) (exp(-5.85*(ci)) - 0.00202943064) |
29 |
|
#define FRESTHRESH 0.017999 /* minimum specularity for approx. */ |
30 |
|
|
31 |
|
|
54 |
|
OBJREC *mp; /* material pointer */ |
55 |
|
RAY *rp; /* ray pointer */ |
56 |
|
short specfl; /* specularity flags, defined above */ |
57 |
< |
COLOR mcolor; /* color of this material */ |
58 |
< |
COLOR scolor; /* color of specular component */ |
58 |
< |
FVECT vrefl; /* vector in direction of reflected ray */ |
57 |
> |
SCOLOR mcolor; /* color of this material */ |
58 |
> |
SCOLOR scolor; /* color of specular component */ |
59 |
|
FVECT prdir; /* vector in transmitted direction */ |
60 |
|
double alpha2; /* roughness squared */ |
61 |
|
double rdiff, rspec; /* reflected specular, diffuse */ |
70 |
|
|
71 |
|
static void |
72 |
|
dirnorm( /* compute source contribution */ |
73 |
< |
COLOR cval, /* returned coefficient */ |
73 |
> |
SCOLOR scval, /* returned coefficient */ |
74 |
|
void *nnp, /* material data */ |
75 |
|
FVECT ldir, /* light source direction */ |
76 |
|
double omega /* light source size */ |
81 |
|
double lrdiff, ltdiff; |
82 |
|
double dtmp, d2, d3, d4; |
83 |
|
FVECT vtmp; |
84 |
< |
COLOR ctmp; |
84 |
> |
SCOLOR sctmp; |
85 |
|
|
86 |
< |
setcolor(cval, 0.0, 0.0, 0.0); |
86 |
> |
scolorblack(scval); |
87 |
|
|
88 |
|
ldot = DOT(np->pnorm, ldir); |
89 |
|
|
100 |
|
ltdiff *= dtmp; |
101 |
|
} |
102 |
|
|
103 |
< |
if (ldot > FTINY && lrdiff > FTINY) { |
103 |
> |
if ((ldot > FTINY) & (lrdiff > FTINY)) { |
104 |
|
/* |
105 |
|
* Compute and add diffuse reflected component to returned |
106 |
|
* color. The diffuse reflected component will always be |
107 |
|
* modified by the color of the material. |
108 |
|
*/ |
109 |
< |
copycolor(ctmp, np->mcolor); |
109 |
> |
copyscolor(sctmp, np->mcolor); |
110 |
|
dtmp = ldot * omega * lrdiff * (1.0/PI); |
111 |
< |
scalecolor(ctmp, dtmp); |
112 |
< |
addcolor(cval, ctmp); |
111 |
> |
scalescolor(sctmp, dtmp); |
112 |
> |
saddscolor(scval, sctmp); |
113 |
|
} |
114 |
< |
if (ldot > FTINY && (np->specfl&(SP_REFL|SP_PURE)) == SP_REFL) { |
114 |
> |
|
115 |
> |
if ((ldot < -FTINY) & (ltdiff > FTINY)) { |
116 |
|
/* |
117 |
+ |
* Compute diffuse transmission. |
118 |
+ |
*/ |
119 |
+ |
copyscolor(sctmp, np->mcolor); |
120 |
+ |
dtmp = -ldot * omega * ltdiff * (1.0/PI); |
121 |
+ |
scalescolor(sctmp, dtmp); |
122 |
+ |
saddscolor(scval, sctmp); |
123 |
+ |
} |
124 |
+ |
|
125 |
+ |
if (ambRayInPmap(np->rp)) |
126 |
+ |
return; /* specular already in photon map */ |
127 |
+ |
|
128 |
+ |
if ((ldot > FTINY) & ((np->specfl&(SP_REFL|SP_PURE)) == SP_REFL)) { |
129 |
+ |
/* |
130 |
|
* Compute specular reflection coefficient using |
131 |
|
* Gaussian distribution model. |
132 |
|
*/ |
145 |
|
dtmp = exp(-d4/dtmp) * d3 / (PI * d2*d2 * dtmp); |
146 |
|
/* worth using? */ |
147 |
|
if (dtmp > FTINY) { |
148 |
< |
copycolor(ctmp, np->scolor); |
148 |
> |
copyscolor(sctmp, np->scolor); |
149 |
|
dtmp *= ldot * omega; |
150 |
< |
scalecolor(ctmp, dtmp); |
151 |
< |
addcolor(cval, ctmp); |
150 |
> |
scalescolor(sctmp, dtmp); |
151 |
> |
saddscolor(scval, sctmp); |
152 |
|
} |
153 |
|
} |
154 |
< |
if (ldot < -FTINY && ltdiff > FTINY) { |
154 |
> |
|
155 |
> |
|
156 |
> |
if ((ldot < -FTINY) & ((np->specfl&(SP_TRAN|SP_PURE)) == SP_TRAN)) { |
157 |
|
/* |
142 |
– |
* Compute diffuse transmission. |
143 |
– |
*/ |
144 |
– |
copycolor(ctmp, np->mcolor); |
145 |
– |
dtmp = -ldot * omega * ltdiff * (1.0/PI); |
146 |
– |
scalecolor(ctmp, dtmp); |
147 |
– |
addcolor(cval, ctmp); |
148 |
– |
} |
149 |
– |
if (ldot < -FTINY && (np->specfl&(SP_TRAN|SP_PURE)) == SP_TRAN) { |
150 |
– |
/* |
158 |
|
* Compute specular transmission. Specular transmission |
159 |
|
* is always modified by material color. |
160 |
|
*/ |
164 |
|
dtmp = exp((2.*DOT(np->prdir,ldir)-2.)/dtmp)/(PI*dtmp); |
165 |
|
/* worth using? */ |
166 |
|
if (dtmp > FTINY) { |
167 |
< |
copycolor(ctmp, np->mcolor); |
167 |
> |
copyscolor(sctmp, np->mcolor); |
168 |
|
dtmp *= np->tspec * omega * sqrt(-ldot/np->pdot); |
169 |
< |
scalecolor(ctmp, dtmp); |
170 |
< |
addcolor(cval, ctmp); |
169 |
> |
scalescolor(sctmp, dtmp); |
170 |
> |
saddscolor(scval, sctmp); |
171 |
|
} |
172 |
|
} |
173 |
|
} |
181 |
|
{ |
182 |
|
NORMDAT nd; |
183 |
|
double fest; |
177 |
– |
double transtest, transdist; |
178 |
– |
double mirtest, mirdist; |
184 |
|
int hastexture; |
185 |
|
double d; |
186 |
< |
COLOR ctmp; |
186 |
> |
SCOLOR sctmp; |
187 |
|
int i; |
188 |
+ |
|
189 |
+ |
/* PMAP: skip transmitted shadow ray if accounted for in photon map */ |
190 |
+ |
/* No longer needed? |
191 |
+ |
if (shadowRayInPmap(r) || ambRayInPmap(r)) |
192 |
+ |
return(1); */ |
193 |
+ |
|
194 |
|
/* easy shadow test */ |
195 |
|
if (r->crtype & SHADOW && m->otype != MAT_TRANS) |
196 |
|
return(1); |
210 |
|
nd.mp = m; |
211 |
|
nd.rp = r; |
212 |
|
/* get material color */ |
213 |
< |
setcolor(nd.mcolor, m->oargs.farg[0], |
213 |
> |
setscolor(nd.mcolor, m->oargs.farg[0], |
214 |
|
m->oargs.farg[1], |
215 |
|
m->oargs.farg[2]); |
216 |
|
/* get roughness */ |
225 |
|
VCOPY(nd.pnorm, r->ron); |
226 |
|
nd.pdot = r->rod; |
227 |
|
} |
228 |
< |
if (r->ro != NULL && isflat(r->ro->otype)) |
228 |
> |
if (!hastexture && r->ro != NULL && isflat(r->ro->otype)) |
229 |
|
nd.specfl |= SP_FLAT; |
230 |
|
if (nd.pdot < .001) |
231 |
|
nd.pdot = .001; /* non-zero for dirnorm() */ |
232 |
< |
multcolor(nd.mcolor, r->pcol); /* modify material color */ |
222 |
< |
mirtest = transtest = 0; |
223 |
< |
mirdist = transdist = r->rot; |
232 |
> |
smultscolor(nd.mcolor, r->pcol); /* modify material color */ |
233 |
|
nd.rspec = m->oargs.farg[3]; |
234 |
|
/* compute Fresnel approx. */ |
235 |
|
if (nd.specfl & SP_PURE && nd.rspec >= FRESTHRESH) { |
250 |
|
nd.specfl |= SP_TBLT; |
251 |
|
if (!hastexture || r->crtype & (SHADOW|AMBIENT)) { |
252 |
|
VCOPY(nd.prdir, r->rdir); |
244 |
– |
transtest = 2; |
253 |
|
} else { |
254 |
< |
for (i = 0; i < 3; i++) /* perturb */ |
255 |
< |
nd.prdir[i] = r->rdir[i] - r->pert[i]; |
254 |
> |
/* perturb */ |
255 |
> |
VSUB(nd.prdir, r->rdir, r->pert); |
256 |
|
if (DOT(nd.prdir, r->ron) < -FTINY) |
257 |
|
normalize(nd.prdir); /* OK */ |
258 |
|
else |
261 |
|
} |
262 |
|
} else |
263 |
|
nd.tdiff = nd.tspec = nd.trans = 0.0; |
264 |
+ |
/* diffuse reflection */ |
265 |
+ |
nd.rdiff = 1.0 - nd.trans - nd.rspec; |
266 |
|
/* transmitted ray */ |
267 |
|
if ((nd.specfl&(SP_TRAN|SP_PURE|SP_TBLT)) == (SP_TRAN|SP_PURE)) { |
268 |
|
RAY lr; |
269 |
< |
copycolor(lr.rcoef, nd.mcolor); /* modified by color */ |
270 |
< |
scalecolor(lr.rcoef, nd.tspec); |
269 |
> |
copyscolor(lr.rcoef, nd.mcolor); /* modified by color */ |
270 |
> |
scalescolor(lr.rcoef, nd.tspec); |
271 |
|
if (rayorigin(&lr, TRANS, r, lr.rcoef) == 0) { |
272 |
|
VCOPY(lr.rdir, nd.prdir); |
273 |
|
rayvalue(&lr); |
274 |
< |
multcolor(lr.rcol, lr.rcoef); |
275 |
< |
addcolor(r->rcol, lr.rcol); |
276 |
< |
transtest *= bright(lr.rcol); |
277 |
< |
transdist = r->rot + lr.rt; |
274 |
> |
smultscolor(lr.rcol, lr.rcoef); |
275 |
> |
saddscolor(r->rcol, lr.rcol); |
276 |
> |
if (nd.tspec >= 1.0-FTINY) { |
277 |
> |
/* completely transparent */ |
278 |
> |
smultscolor(lr.mcol, lr.rcoef); |
279 |
> |
copyscolor(r->mcol, lr.mcol); |
280 |
> |
r->rmt = r->rot + lr.rmt; |
281 |
> |
r->rxt = r->rot + lr.rxt; |
282 |
> |
} else if (nd.tspec > nd.tdiff + nd.rdiff) |
283 |
> |
r->rxt = r->rot + raydistance(&lr); |
284 |
|
} |
285 |
< |
} else |
270 |
< |
transtest = 0; |
285 |
> |
} |
286 |
|
|
287 |
< |
if (r->crtype & SHADOW) { /* the rest is shadow */ |
273 |
< |
r->rt = transdist; |
287 |
> |
if (r->crtype & SHADOW) /* the rest is shadow */ |
288 |
|
return(1); |
275 |
– |
} |
289 |
|
/* get specular reflection */ |
290 |
|
if (nd.rspec > FTINY) { |
291 |
|
nd.specfl |= SP_REFL; |
292 |
|
/* compute specular color */ |
293 |
|
if (m->otype != MAT_METAL) { |
294 |
< |
setcolor(nd.scolor, nd.rspec, nd.rspec, nd.rspec); |
294 |
> |
setscolor(nd.scolor, nd.rspec, nd.rspec, nd.rspec); |
295 |
|
} else if (fest > FTINY) { |
296 |
|
d = m->oargs.farg[3]*(1. - fest); |
297 |
< |
for (i = 0; i < 3; i++) |
298 |
< |
colval(nd.scolor,i) = fest + |
286 |
< |
colval(nd.mcolor,i)*d; |
297 |
> |
for (i = NCSAMP; i--; ) |
298 |
> |
nd.scolor[i] = fest + nd.mcolor[i]*d; |
299 |
|
} else { |
300 |
< |
copycolor(nd.scolor, nd.mcolor); |
301 |
< |
scalecolor(nd.scolor, nd.rspec); |
300 |
> |
copyscolor(nd.scolor, nd.mcolor); |
301 |
> |
scalescolor(nd.scolor, nd.rspec); |
302 |
|
} |
303 |
|
/* check threshold */ |
304 |
|
if (!(nd.specfl & SP_PURE) && specthresh >= nd.rspec-FTINY) |
305 |
|
nd.specfl |= SP_RBLT; |
294 |
– |
/* compute reflected ray */ |
295 |
– |
VSUM(nd.vrefl, r->rdir, nd.pnorm, 2.*nd.pdot); |
296 |
– |
/* penetration? */ |
297 |
– |
if (hastexture && DOT(nd.vrefl, r->ron) <= FTINY) |
298 |
– |
VSUM(nd.vrefl, r->rdir, r->ron, 2.*r->rod); |
299 |
– |
checknorm(nd.vrefl); |
306 |
|
} |
307 |
|
/* reflected ray */ |
308 |
|
if ((nd.specfl&(SP_REFL|SP_PURE|SP_RBLT)) == (SP_REFL|SP_PURE)) { |
309 |
|
RAY lr; |
310 |
|
if (rayorigin(&lr, REFLECTED, r, nd.scolor) == 0) { |
311 |
< |
VCOPY(lr.rdir, nd.vrefl); |
311 |
> |
/* compute reflected ray */ |
312 |
> |
VSUM(lr.rdir, r->rdir, nd.pnorm, 2.*nd.pdot); |
313 |
> |
/* penetration? */ |
314 |
> |
if (hastexture && DOT(lr.rdir, r->ron) <= FTINY) |
315 |
> |
VSUM(lr.rdir, r->rdir, r->ron, 2.*r->rod); |
316 |
> |
checknorm(lr.rdir); |
317 |
|
rayvalue(&lr); |
318 |
< |
multcolor(lr.rcol, lr.rcoef); |
319 |
< |
addcolor(r->rcol, lr.rcol); |
320 |
< |
if (nd.specfl & SP_FLAT && |
321 |
< |
!hastexture | (r->crtype & AMBIENT)) { |
322 |
< |
mirtest = 2.*bright(lr.rcol); |
323 |
< |
mirdist = r->rot + lr.rt; |
313 |
< |
} |
318 |
> |
smultscolor(lr.rcol, lr.rcoef); |
319 |
> |
copyscolor(r->mcol, lr.rcol); |
320 |
> |
saddscolor(r->rcol, lr.rcol); |
321 |
> |
r->rmt = r->rot; |
322 |
> |
if (nd.specfl & SP_FLAT && r->crtype & AMBIENT) |
323 |
> |
r->rmt += raydistance(&lr); |
324 |
|
} |
325 |
|
} |
316 |
– |
/* diffuse reflection */ |
317 |
– |
nd.rdiff = 1.0 - nd.trans - nd.rspec; |
326 |
|
|
327 |
|
if (nd.specfl & SP_PURE && nd.rdiff <= FTINY && nd.tdiff <= FTINY) |
328 |
|
return(1); /* 100% pure specular */ |
329 |
|
|
330 |
|
if (!(nd.specfl & SP_PURE)) |
331 |
< |
gaussamp(&nd); /* checks *BLT flags */ |
331 |
> |
gaussamp(&nd); /* checks *BLT flags */ |
332 |
|
|
333 |
|
if (nd.rdiff > FTINY) { /* ambient from this side */ |
334 |
< |
copycolor(ctmp, nd.mcolor); /* modified by material color */ |
335 |
< |
scalecolor(ctmp, nd.rdiff); |
334 |
> |
copyscolor(sctmp, nd.mcolor); /* modified by material color */ |
335 |
> |
scalescolor(sctmp, nd.rdiff); |
336 |
|
if (nd.specfl & SP_RBLT) /* add in specular as well? */ |
337 |
< |
addcolor(ctmp, nd.scolor); |
338 |
< |
multambient(ctmp, r, hastexture ? nd.pnorm : r->ron); |
339 |
< |
addcolor(r->rcol, ctmp); /* add to returned color */ |
337 |
> |
saddscolor(sctmp, nd.scolor); |
338 |
> |
multambient(sctmp, r, nd.pnorm); |
339 |
> |
saddscolor(r->rcol, sctmp); /* add to returned color */ |
340 |
|
} |
341 |
|
if (nd.tdiff > FTINY) { /* ambient from other side */ |
342 |
< |
copycolor(ctmp, nd.mcolor); /* modified by color */ |
343 |
< |
if (nd.specfl & SP_TBLT) |
344 |
< |
scalecolor(ctmp, nd.trans); |
345 |
< |
else |
346 |
< |
scalecolor(ctmp, nd.tdiff); |
347 |
< |
flipsurface(r); |
348 |
< |
if (hastexture) { |
349 |
< |
FVECT bnorm; |
350 |
< |
bnorm[0] = -nd.pnorm[0]; |
351 |
< |
bnorm[1] = -nd.pnorm[1]; |
352 |
< |
bnorm[2] = -nd.pnorm[2]; |
353 |
< |
multambient(ctmp, r, bnorm); |
346 |
< |
} else |
347 |
< |
multambient(ctmp, r, r->ron); |
348 |
< |
addcolor(r->rcol, ctmp); |
349 |
< |
flipsurface(r); |
342 |
> |
FVECT bnorm; |
343 |
> |
copyscolor(sctmp, nd.mcolor); /* modified by color */ |
344 |
> |
if (nd.specfl & SP_TBLT) { |
345 |
> |
scalescolor(sctmp, nd.trans); |
346 |
> |
} else { |
347 |
> |
scalescolor(sctmp, nd.tdiff); |
348 |
> |
} |
349 |
> |
bnorm[0] = -nd.pnorm[0]; |
350 |
> |
bnorm[1] = -nd.pnorm[1]; |
351 |
> |
bnorm[2] = -nd.pnorm[2]; |
352 |
> |
multambient(sctmp, r, bnorm); |
353 |
> |
saddscolor(r->rcol, sctmp); |
354 |
|
} |
355 |
|
/* add direct component */ |
356 |
|
direct(r, dirnorm, &nd); |
353 |
– |
/* check distance */ |
354 |
– |
d = bright(r->rcol); |
355 |
– |
if (transtest > d) |
356 |
– |
r->rt = transdist; |
357 |
– |
else if (mirtest > d) |
358 |
– |
r->rt = mirdist; |
357 |
|
|
358 |
|
return(1); |
359 |
|
} |
368 |
|
FVECT u, v, h; |
369 |
|
double rv[2]; |
370 |
|
double d, sinp, cosp; |
371 |
< |
COLOR scol; |
371 |
> |
SCOLOR scol; |
372 |
|
int maxiter, ntrials, nstarget, nstaken; |
373 |
|
int i; |
374 |
|
/* quick test */ |
376 |
|
(np->specfl & (SP_TRAN|SP_TBLT)) != SP_TRAN) |
377 |
|
return; |
378 |
|
/* set up sample coordinates */ |
379 |
< |
v[0] = v[1] = v[2] = 0.0; |
382 |
< |
for (i = 0; i < 3; i++) |
383 |
< |
if (np->pnorm[i] < 0.6 && np->pnorm[i] > -0.6) |
384 |
< |
break; |
385 |
< |
v[i] = 1.0; |
386 |
< |
fcross(u, v, np->pnorm); |
387 |
< |
normalize(u); |
379 |
> |
getperpendicular(u, np->pnorm, rand_samp); |
380 |
|
fcross(v, np->pnorm, u); |
381 |
|
/* compute reflection */ |
382 |
|
if ((np->specfl & (SP_REFL|SP_RBLT)) == SP_REFL && |
383 |
< |
rayorigin(&sr, SPECULAR, np->rp, np->scolor) == 0) { |
383 |
> |
rayorigin(&sr, RSPECULAR, np->rp, np->scolor) == 0) { |
384 |
|
nstarget = 1; |
385 |
|
if (specjitter > 1.5) { /* multiple samples? */ |
386 |
|
nstarget = specjitter*np->rp->rweight + .5; |
388 |
|
nstarget = sr.rweight/minweight; |
389 |
|
if (nstarget > 1) { |
390 |
|
d = 1./nstarget; |
391 |
< |
scalecolor(sr.rcoef, d); |
391 |
> |
scalescolor(sr.rcoef, d); |
392 |
|
sr.rweight *= d; |
393 |
|
} else |
394 |
|
nstarget = 1; |
395 |
|
} |
396 |
< |
setcolor(scol, 0., 0., 0.); |
396 |
> |
scolorblack(scol); |
397 |
|
dimlist[ndims++] = (int)(size_t)np->mp; |
398 |
|
maxiter = MAXITER*nstarget; |
399 |
|
for (nstaken = ntrials = 0; nstaken < nstarget && |
424 |
|
if (nstaken) rayclear(&sr); |
425 |
|
rayvalue(&sr); |
426 |
|
d = 2./(1. + np->rp->rod/d); |
427 |
< |
scalecolor(sr.rcol, d); |
428 |
< |
addcolor(scol, sr.rcol); |
427 |
> |
scalescolor(sr.rcol, d); |
428 |
> |
saddscolor(scol, sr.rcol); |
429 |
|
} else { |
430 |
|
rayvalue(&sr); |
431 |
< |
multcolor(sr.rcol, sr.rcoef); |
432 |
< |
addcolor(np->rp->rcol, sr.rcol); |
431 |
> |
smultscolor(sr.rcol, sr.rcoef); |
432 |
> |
saddscolor(np->rp->rcol, sr.rcol); |
433 |
|
} |
434 |
|
++nstaken; |
435 |
|
} |
436 |
|
if (nstarget > 1) { /* final W-G-M-D weighting */ |
437 |
< |
multcolor(scol, sr.rcoef); |
437 |
> |
smultscolor(scol, sr.rcoef); |
438 |
|
d = (double)nstarget/ntrials; |
439 |
< |
scalecolor(scol, d); |
440 |
< |
addcolor(np->rp->rcol, scol); |
439 |
> |
scalescolor(scol, d); |
440 |
> |
saddscolor(np->rp->rcol, scol); |
441 |
|
} |
442 |
|
ndims--; |
443 |
|
} |
444 |
|
/* compute transmission */ |
445 |
< |
copycolor(sr.rcoef, np->mcolor); /* modified by color */ |
446 |
< |
scalecolor(sr.rcoef, np->tspec); |
445 |
> |
copyscolor(sr.rcoef, np->mcolor); /* modified by color */ |
446 |
> |
scalescolor(sr.rcoef, np->tspec); |
447 |
|
if ((np->specfl & (SP_TRAN|SP_TBLT)) == SP_TRAN && |
448 |
< |
rayorigin(&sr, SPECULAR, np->rp, sr.rcoef) == 0) { |
448 |
> |
rayorigin(&sr, TSPECULAR, np->rp, sr.rcoef) == 0) { |
449 |
|
nstarget = 1; |
450 |
|
if (specjitter > 1.5) { /* multiple samples? */ |
451 |
|
nstarget = specjitter*np->rp->rweight + .5; |
453 |
|
nstarget = sr.rweight/minweight; |
454 |
|
if (nstarget > 1) { |
455 |
|
d = 1./nstarget; |
456 |
< |
scalecolor(sr.rcoef, d); |
456 |
> |
scalescolor(sr.rcoef, d); |
457 |
|
sr.rweight *= d; |
458 |
|
} else |
459 |
|
nstarget = 1; |
485 |
|
if (nstaken) /* multi-sampling */ |
486 |
|
rayclear(&sr); |
487 |
|
rayvalue(&sr); |
488 |
< |
multcolor(sr.rcol, sr.rcoef); |
489 |
< |
addcolor(np->rp->rcol, sr.rcol); |
488 |
> |
smultscolor(sr.rcol, sr.rcoef); |
489 |
> |
saddscolor(np->rp->rcol, sr.rcol); |
490 |
|
++nstaken; |
491 |
|
} |
492 |
|
ndims--; |