| 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 |
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* of translating transmitted rays this distance beneath the surface |
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{1.8, -1.8}, {-2.4, 0}, {0, 2.4}, |
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{0, -2.4}, {2.4, 0}, |
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}; |
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– |
#define neighbors(i,j) \ |
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– |
((dir2check[i][0]-dir2check[j][0])*(dir2check[i][0]-dir2check[j][0]) + \ |
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– |
(dir2check[i][1]-dir2check[j][1])*(dir2check[i][1]-dir2check[j][1]) <= 0.73) |
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– |
const double peak_over = 1.5; |
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PEAKSAMP psamp[NDIR2CHECK]; |
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SDSpectralDF *dfp; |
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FVECT pdir; |
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double tomsum, tomsurr; |
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COLOR vpeak, vsurr; |
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double vypeak; |
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< |
int i, j, ns; |
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> |
int i, ns; |
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SDError ec; |
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|
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if (ndp->pr->rod > 0) |
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} |
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qsort(psamp, NDIR2CHECK, sizeof(PEAKSAMP), cmp_psamp); |
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if (psamp[0].vy <= FTINY) |
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< |
return; /* zero area */ |
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> |
return; /* zero BTDF here */ |
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setcolor(vpeak, 0, 0, 0); |
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setcolor(vsurr, 0, 0, 0); |
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vypeak = tomsum = tomsurr = 0; /* combine top unique values */ |
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ns = 0; |
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for (i = 0; i < NDIR2CHECK; i++) { |
| 173 |
< |
for (j = i; j--; ) /* check for duplicate sample */ |
| 174 |
< |
if (psamp[j].vy == psamp[i].vy && neighbors(i,j)) |
| 179 |
< |
break; |
| 180 |
< |
if (j >= 0) |
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< |
continue; /* skip duplicate */ |
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> |
if (i && psamp[i].vy == psamp[i-1].vy) |
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> |
continue; /* assume duplicate sample */ |
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|
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ec = SDsizeBSDF(&tomega, psamp[i].tdir, ndp->vray, |
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SDqueryMin, ndp->sd); |
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if (ec) |
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goto baderror; |
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< |
/* 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) { |
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if (!i) return; /* abort */ |
| 191 |
– |
scalecolor(psamp[i].vcol, tomega); |
| 186 |
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addcolor(vsurr, psamp[i].vcol); |
| 187 |
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tomsurr += tomega; |
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continue; |
| 189 |
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} |
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– |
scalecolor(psamp[i].vcol, tomega); |
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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 */ |
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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); |
| 212 |
< |
multcolor(ndp->cthru_surr, ndp->pr->pcol); |
| 213 |
< |
} |
| 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)); |
| 217 |
– |
#undef neighbors |
| 208 |
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#undef NDIR2CHECK |
| 209 |
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} |
| 210 |
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|
