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#include "ray.h" |
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#include "otypes.h" |
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#include "rtotypes.h" |
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+ |
#include "pmapmat.h" |
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|
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#ifdef DISPERSE |
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#include "source.h" |
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|
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#define MINCOS 0.997 /* minimum dot product for dispersion */ |
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|
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|
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static double |
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mylog( /* special log for extinction coefficients */ |
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double x |
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} |
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|
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|
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< |
extern int |
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> |
int |
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m_dielectric( /* color a ray which hit a dielectric interface */ |
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OBJREC *m, |
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< |
register RAY *r |
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> |
RAY *r |
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) |
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{ |
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double cos1, cos2, nratio; |
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COLOR ctrans; |
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COLOR talb; |
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int hastexture; |
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– |
double transdist=0, transtest=0; |
78 |
– |
double mirdist=0, mirtest=0; |
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int flatsurface; |
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double refl, trans; |
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FVECT dnorm; |
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double d1, d2; |
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RAY p; |
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< |
register int i; |
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> |
int i; |
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|
|
84 |
+ |
/* PMAP: skip refracted shadow or ambient ray if accounted for in |
85 |
+ |
photon map */ |
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+ |
if (shadowRayInPmap(r) || ambRayInPmap(r)) |
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+ |
return(1); |
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+ |
|
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if (m->oargs.nfargs != (m->otype==MAT_DIELECTRIC ? 5 : 8)) |
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objerror(m, USER, "bad arguments"); |
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|
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VCOPY(dnorm, r->ron); |
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cos1 = r->rod; |
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} |
100 |
< |
flatsurface = !hastexture && r->ro != NULL && isflat(r->ro->otype); |
100 |
> |
flatsurface = r->ro != NULL && isflat(r->ro->otype) && |
101 |
> |
!hastexture | (r->crtype & AMBIENT); |
102 |
|
|
103 |
|
/* index of refraction */ |
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if (m->otype == MAT_DIELECTRIC) |
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addcolor(r->rcol, p.rcol); |
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/* virtual distance */ |
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if (flatsurface || |
206 |
< |
(1.-FTINY <= nratio && |
207 |
< |
nratio <= 1.+FTINY)) { |
208 |
< |
transtest = 2*bright(p.rcol); |
205 |
< |
transdist = r->rot + p.rt; |
206 |
< |
} |
206 |
> |
(1.-FTINY <= nratio) & |
207 |
> |
(nratio <= 1.+FTINY)) |
208 |
> |
r->rxt = r->rot + raydistance(&p); |
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|
} |
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|
} |
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|
} |
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rayvalue(&p); /* reflected ray value */ |
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|
|
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multcolor(p.rcol, p.rcoef); /* color contribution */ |
226 |
+ |
copycolor(r->mcol, p.rcol); |
227 |
|
addcolor(r->rcol, p.rcol); |
228 |
|
/* virtual distance */ |
229 |
< |
if (flatsurface) { |
230 |
< |
mirtest = 2*bright(p.rcol); |
228 |
< |
mirdist = r->rot + p.rt; |
229 |
< |
} |
229 |
> |
if (flatsurface) |
230 |
> |
r->rmt = r->rot + raydistance(&p); |
231 |
|
} |
231 |
– |
/* check distance to return */ |
232 |
– |
d1 = bright(r->rcol); |
233 |
– |
if (transtest > d1) |
234 |
– |
r->rt = transdist; |
235 |
– |
else if (mirtest > d1) |
236 |
– |
r->rt = mirdist; |
232 |
|
/* rayvalue() computes absorption */ |
233 |
|
return(1); |
234 |
|
} |
375 |
|
|
376 |
|
static int |
377 |
|
lambda( /* compute lambda for material */ |
378 |
< |
register OBJREC *m, |
378 |
> |
OBJREC *m, |
379 |
|
FVECT v2, |
380 |
|
FVECT dv, |
381 |
|
FVECT lr |