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#ifdef DISPERSE |
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#include "source.h" |
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static disperse(); |
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#endif |
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/* |
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OBJREC *m; |
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register RAY *r; |
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{ |
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double sqrt(), pow(); |
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double cos1, cos2, nratio; |
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COLOR mcolor; |
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double mabsorp; |
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double refl, trans, transbright; |
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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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refl /= 2.0; |
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trans = 1.0 - refl; |
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transbright = -FTINY; |
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if (rayorigin(&p, r, REFRACTED, mabsorp*trans) == 0) { |
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if (m->otype != MAT_DIELECTRIC |
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|| r->rod > 0.0 |
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|| r->crtype & SHADOW |
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|| !directvis |
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|| m->oargs.farg[4] == 0.0 |
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|| !disperse(m, r, p.rdir, trans)) |
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#endif |
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multcolor(mcolor, r->pcol); /* modify */ |
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scalecolor(p.rcol, trans); |
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addcolor(r->rcol, p.rcol); |
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transbright = bright(p.rcol); |
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r->rt = r->rot + p.rt; |
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if (nratio >= 1.0-FTINY && nratio <= 1.0+FTINY) |
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r->rt = r->rot + p.rt; |
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} |
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} |
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} |
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scalecolor(p.rcol, refl); /* color contribution */ |
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addcolor(r->rcol, p.rcol); |
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if (bright(p.rcol) > transbright) |
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r->rt = r->rot + p.rt; |
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} |
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multcolor(r->rcol, mcolor); /* multiply by transmittance */ |
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FVECT vt; |
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double tr; |
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{ |
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double sqrt(); |
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RAY sray, *entray; |
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FVECT v1, v2, n1, n2; |
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FVECT dv, v2Xdv; |
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double v2Xdvv2Xdv; |
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int sn, success = 0; |
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double omega; |
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int success = 0; |
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SRCINDEX si; |
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FVECT vtmp1, vtmp2; |
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double dtmp1, dtmp2; |
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int l1, l2; |
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v2Xdvv2Xdv = DOT(v2Xdv, v2Xdv); |
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/* check sources */ |
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for (sn = 0; sn < nsources; sn++) { |
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initsrcindex(&si); |
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while (srcray(&sray, r, &si)) { |
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if ((omega = srcray(&sray, r, sn)) == 0.0 || |
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DOT(sray.rdir, v2) < MINCOS) |
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if (DOT(sray.rdir, v2) < MINCOS) |
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continue; /* bad source */ |
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/* adjust source ray */ |
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dtmp1 = DOT(v2Xdv, sray.rdir) / v2Xdvv2Xdv; |
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*/ |
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fcross(vtmp1, v2Xdv, sray.rdir); |
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dtmp1 = sqrt(omega / v2Xdvv2Xdv / PI); |
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dtmp1 = sqrt(si.dom / v2Xdvv2Xdv / PI); |
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/* compute first ray */ |
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for (i = 0; i < 3; i++) |