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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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if (source[sn].sflags & SDISTANT) { |
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if (source[sn].sflags & SSPOT) { /* check location */ |
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for (i = 0; i < 3; i++) |
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vd[i] = sr->rorg[i] - source[sn].sl.s->aim[i]; |
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vd[i] = source[sn].sl.s->aim[i] - sr->rorg[i]; |
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d = DOT(sr->rdir,vd); |
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if (d <= FTINY) |
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return(0.0); |
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d = DOT(vd,vd) - d*d; |
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if (PI*d > source[sn].sl.s->siz) |
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return(0.0); |
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int (*f)(); /* direct component coefficient function */ |
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char *p; /* data for f */ |
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{ |
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extern int (*trace)(); |
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extern double pow(); |
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register int sn; |
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int nshadcheck, ncnts; |
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source[cntord[sn].sno].sflags & SFOLLOW )) { |
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/* follow entire path */ |
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raycont(&sr); |
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if (trace != NULL) |
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(*trace)(&sr); /* trace execution */ |
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if (bright(sr.rcol) <= FTINY) |
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continue; /* missed! */ |
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copycolor(srccnt[cntord[sn].sno].val, sr.rcol); |
