| 17 |
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#include "pmapmat.h" |
| 18 |
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|
| 19 |
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/* |
| 20 |
< |
* Arguments to this material include optional diffuse colors. |
| 20 |
> |
* Arguments to this material include optional diffuse colors. |
| 21 |
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* String arguments include the BSDF and function files. |
| 22 |
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* For the MAT_BSDF type, a non-zero thickness causes the useful behavior |
| 23 |
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* of translating transmitted rays this distance beneath the surface |
| 130 |
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{1.8, -1.8}, {-2.4, 0}, {0, 2.4}, |
| 131 |
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{0, -2.4}, {2.4, 0}, |
| 132 |
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}; |
| 133 |
– |
const double peak_over = 1.5; |
| 133 |
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PEAKSAMP psamp[NDIR2CHECK]; |
| 134 |
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SDSpectralDF *dfp; |
| 135 |
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FVECT pdir; |
| 164 |
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} |
| 165 |
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qsort(psamp, NDIR2CHECK, sizeof(PEAKSAMP), cmp_psamp); |
| 166 |
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if (psamp[0].vy <= FTINY) |
| 167 |
< |
return; /* zero area */ |
| 167 |
> |
return; /* zero BTDF here */ |
| 168 |
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setcolor(vpeak, 0, 0, 0); |
| 169 |
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setcolor(vsurr, 0, 0, 0); |
| 170 |
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vypeak = tomsum = tomsurr = 0; /* combine top unique values */ |
| 177 |
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SDqueryMin, ndp->sd); |
| 178 |
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if (ec) |
| 179 |
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goto baderror; |
| 180 |
< |
/* not really a peak? */ |
| 180 |
> |
|
| 181 |
> |
scalecolor(psamp[i].vcol, tomega); |
| 182 |
> |
/* not part of peak? */ |
| 183 |
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if (tomega > 1.5*dfp->minProjSA || |
| 184 |
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vypeak > 8.*psamp[i].vy*ns) { |
| 185 |
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if (!i) return; /* abort */ |
| 185 |
– |
scalecolor(psamp[i].vcol, tomega); |
| 186 |
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addcolor(vsurr, psamp[i].vcol); |
| 187 |
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tomsurr += tomega; |
| 188 |
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continue; |
| 189 |
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} |
| 190 |
– |
scalecolor(psamp[i].vcol, tomega); |
| 190 |
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addcolor(vpeak, psamp[i].vcol); |
| 191 |
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tomsum += tomega; |
| 192 |
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vypeak += psamp[i].vy; |
| 193 |
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++ns; |
| 194 |
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} |
| 195 |
< |
if (vypeak*tomsurr < peak_over*bright(vsurr)*ns) |
| 196 |
< |
return; /* peak not peaky enough */ |
| 195 |
> |
if (tomsurr <= FTINY) /* no surround implies no peak */ |
| 196 |
> |
return; |
| 197 |
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if ((vypeak/ns - (ndp->vray[2] > 0 ? ndp->sd->tLambFront.cieY |
| 198 |
< |
: ndp->sd->tLambBack.cieY)*(1./PI))*tomsum <= .001) |
| 199 |
< |
return; /* < 0.1% transmission */ |
| 198 |
> |
: ndp->sd->tLambBack.cieY)*(1./PI))*tomsum < .0005) |
| 199 |
> |
return; /* < 0.05% transmission */ |
| 200 |
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copycolor(ndp->cthru, vpeak); /* already scaled by omega */ |
| 201 |
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multcolor(ndp->cthru, ndp->pr->pcol); /* modify by pattern */ |
| 202 |
< |
if (tomsurr > FTINY) { /* surround contribution? */ |
| 203 |
< |
scalecolor(vsurr, 1./tomsurr); /* this one is avg. BTDF */ |
| 204 |
< |
copycolor(ndp->cthru_surr, vsurr); |
| 206 |
< |
multcolor(ndp->cthru_surr, ndp->pr->pcol); |
| 207 |
< |
} |
| 202 |
> |
scalecolor(vsurr, 1./tomsurr); /* surround is avg. BTDF */ |
| 203 |
> |
copycolor(ndp->cthru_surr, vsurr); |
| 204 |
> |
multcolor(ndp->cthru_surr, ndp->pr->pcol); |
| 205 |
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return; |
| 206 |
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baderror: |
| 207 |
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objerror(ndp->mp, USER, transSDError(ec)); |
| 680 |
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SDfreeCache(nd.sd); |
| 681 |
|
return(1); |
| 682 |
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} |
| 683 |
< |
/* diffuse reflectance */ |
| 683 |
> |
/* diffuse components */ |
| 684 |
|
if (hitfront) { |
| 685 |
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cvt_sdcolor(nd.rdiff, &nd.sd->rLambFront); |
| 686 |
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if (m->oargs.nfargs >= 3) { |
| 689 |
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m->oargs.farg[2]); |
| 690 |
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addcolor(nd.rdiff, ctmp); |
| 691 |
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} |
| 692 |
+ |
cvt_sdcolor(nd.tdiff, &nd.sd->tLambFront); |
| 693 |
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} else { |
| 694 |
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cvt_sdcolor(nd.rdiff, &nd.sd->rLambBack); |
| 695 |
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if (m->oargs.nfargs >= 6) { |
| 698 |
|
m->oargs.farg[5]); |
| 699 |
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addcolor(nd.rdiff, ctmp); |
| 700 |
|
} |
| 701 |
+ |
cvt_sdcolor(nd.tdiff, &nd.sd->tLambBack); |
| 702 |
|
} |
| 703 |
< |
/* diffuse transmittance */ |
| 705 |
< |
cvt_sdcolor(nd.tdiff, hitfront ? &nd.sd->tLambFront : &nd.sd->tLambBack); |
| 706 |
< |
if (m->oargs.nfargs >= 9) { |
| 703 |
> |
if (m->oargs.nfargs >= 9) { /* add diffuse transmittance? */ |
| 704 |
|
setcolor(ctmp, m->oargs.farg[6], |
| 705 |
|
m->oargs.farg[7], |
| 706 |
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m->oargs.farg[8]); |
