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#include "otypes.h" |
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#include "rtotypes.h" |
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#include "random.h" |
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#include "pmapmat.h" |
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|
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#ifndef MAXITER |
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#define MAXITER 10 /* maximum # specular ray attempts */ |
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scalecolor(ctmp, dtmp); |
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addcolor(cval, ctmp); |
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} |
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|
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if (ldot < -FTINY && ltdiff > FTINY) { |
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/* |
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* Compute diffuse transmission. |
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*/ |
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copycolor(ctmp, np->mcolor); |
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dtmp = -ldot * omega * ltdiff * (1.0/PI); |
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scalecolor(ctmp, dtmp); |
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addcolor(cval, ctmp); |
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} |
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|
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if (ambRayInPmap(np->rp)) |
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return; /* specular already in photon map */ |
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|
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if (ldot > FTINY && (np->specfl&(SP_REFL|SP_PURE)) == SP_REFL) { |
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/* |
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* Compute specular reflection coefficient using |
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addcolor(cval, ctmp); |
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} |
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} |
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if (ldot < -FTINY && ltdiff > FTINY) { |
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/* |
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* Compute diffuse transmission. |
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*/ |
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copycolor(ctmp, np->mcolor); |
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dtmp = -ldot * omega * ltdiff * (1.0/PI); |
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scalecolor(ctmp, dtmp); |
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addcolor(cval, ctmp); |
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} |
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|
156 |
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|
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if (ldot < -FTINY && (np->specfl&(SP_TRAN|SP_PURE)) == SP_TRAN) { |
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/* |
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* Compute specular transmission. Specular transmission |
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double d; |
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COLOR ctmp; |
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int i; |
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|
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/* PMAP: skip transmitted shadow ray if accounted for in photon map */ |
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/* No longer needed? |
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if (shadowRayInPmap(r) || ambRayInPmap(r)) |
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return(1); */ |
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|
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/* easy shadow test */ |
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if (r->crtype & SHADOW && m->otype != MAT_TRANS) |
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return(1); |
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VCOPY(nd.prdir, r->rdir); |
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transtest = 2; |
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} else { |
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for (i = 0; i < 3; i++) /* perturb */ |
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nd.prdir[i] = r->rdir[i] - r->pert[i]; |
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/* perturb */ |
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> |
VSUB(nd.prdir, r->rdir, r->pert); |
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if (DOT(nd.prdir, r->ron) < -FTINY) |
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normalize(nd.prdir); /* OK */ |
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else |
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} else |
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nd.tdiff = nd.tspec = nd.trans = 0.0; |
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/* transmitted ray */ |
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|
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if ((nd.specfl&(SP_TRAN|SP_PURE|SP_TBLT)) == (SP_TRAN|SP_PURE)) { |
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RAY lr; |
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copycolor(lr.rcoef, nd.mcolor); /* modified by color */ |
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/* diffuse reflection */ |
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nd.rdiff = 1.0 - nd.trans - nd.rspec; |
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|
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if (nd.specfl & SP_PURE && nd.rdiff <= FTINY && nd.tdiff <= FTINY) |
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> |
if (nd.specfl & SP_PURE && nd.rdiff <= FTINY && nd.tdiff <= FTINY) { |
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> |
if (mirtest > transtest+FTINY) |
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> |
r->rt = mirdist; |
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> |
else if (transtest > FTINY) |
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> |
r->rt = transdist; |
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return(1); /* 100% pure specular */ |
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< |
|
340 |
> |
} |
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if (!(nd.specfl & SP_PURE)) |
342 |
< |
gaussamp(&nd); /* checks *BLT flags */ |
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> |
gaussamp(&nd); /* checks *BLT flags */ |
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|
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if (nd.rdiff > FTINY) { /* ambient from this side */ |
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copycolor(ctmp, nd.mcolor); /* modified by material color */ |
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(np->specfl & (SP_TRAN|SP_TBLT)) != SP_TRAN) |
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return; |
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/* set up sample coordinates */ |
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< |
getperpendicular(u, np->pnorm); |
400 |
> |
getperpendicular(u, np->pnorm, rand_samp); |
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fcross(v, np->pnorm, u); |
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/* compute reflection */ |
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if ((np->specfl & (SP_REFL|SP_RBLT)) == SP_REFL && |