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/* Copyright (c) 1993 Regents of the University of California */ |
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/* Copyright (c) 1995 Regents of the University of California */ |
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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int directvis = 1; /* sources visible? */ |
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double srcsizerat = .25; /* maximum ratio source size/dist. */ |
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COLOR cextinction = BLKCOLOR; /* global extinction coefficient */ |
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double salbedo = 0.; /* global scattering albedo */ |
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double seccg = 0.; /* global scattering eccentricity */ |
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double ssampdist = 0.; /* scatter sampling distance */ |
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double specthresh = .15; /* specular sampling threshold */ |
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double specjitter = 1.; /* specular sampling jitter */ |
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int backvis = 1; /* back face visibility */ |
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int maxdepth = 6; /* maximum recursion depth */ |
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double minweight = 5e-3; /* minimum ray weight */ |
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{ |
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static RAY thisray; |
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if (viewray(thisray.rorg, thisray.rdir, &ourview, |
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(x+pixjitter())/hres, (y+pixjitter())/vres) < 0) { |
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if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, &ourview, |
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(x+pixjitter())/hres, (y+pixjitter())/vres)) < -FTINY) { |
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setcolor(col, 0.0, 0.0, 0.0); |
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return(0.0); |
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} |
