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/* Copyright (c) 1990 Regents of the University of California */ |
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/* Copyright (c) 1991 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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{ |
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static int depth = 0; |
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register OBJREC *m; |
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/* check for irradiance calc. */ |
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if (do_irrad && !(r->crtype & ~(PRIMARY|TRANS))) { |
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if (irr_ignore(objptr(mod)->otype)) |
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raytrans(r); |
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else |
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(*ofun[Lamb.otype].funp)(&Lamb, r); |
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return; |
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} |
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/* check for infinite loop */ |
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if (depth++ >= MAXLOOP) |
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objerror(r->ro, USER, "possible modifier loop"); |
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error(USER, errmsg); |
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} |
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******/ |
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/* hack for irradiance calculation */ |
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if (do_irrad && !(r->crtype & ~(PRIMARY|TRANS))) { |
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if (irr_ignore(m->otype)) { |
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depth--; |
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raytrans(r); |
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return; |
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} |
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if (!islight(m->otype)) |
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m = &Lamb; |
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} |
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(*ofun[m->otype].funp)(m, r); /* execute function */ |
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m->lastrno = r->rno; |
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if (ismaterial(m->otype)) { /* materials call raytexture */ |
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else if (r->rdir[i] < -FTINY) |
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sflags |= 0x10 << i; |
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} |
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if (sflags == 0) |
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error(CONSISTENCY, "zero ray direction in localhit"); |
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t = 0.0; |
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if (!incube(scene, curpos)) { |
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/* find distance to entry */ |
