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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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static const char RCSid[] = "$Id"; |
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#endif |
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/* |
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* Mist volumetric material. |
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*/ |
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#include "ray.h" |
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#include "copyright.h" |
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#include <string.h> |
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#include "ray.h" |
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#include "source.h" |
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/* |
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#define RELAYDELIM '>' /* relay delimiter character */ |
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extern COLOR cextinction; /* global coefficient of extinction */ |
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extern COLOR salbedo; /* global scattering albedo */ |
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extern double seccg; /* global scattering eccentricity */ |
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static int |
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inslist(sl, n) /* return index of source n if it's in list sl */ |
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register int *sl; |
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register SRCREC *sp; |
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register char *id; |
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{ |
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extern char *index(); |
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register char *cp; |
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/* check for relay sources */ |
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while ((cp = index(id, RELAYDELIM)) != NULL) { |
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while ((cp = strchr(id, RELAYDELIM)) != NULL) { |
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if (!(sp->sflags & SVIRTUAL) || sp->so == NULL) |
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return(0); |
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if (strncmp(id, sp->so->oname, cp-id) || sp->so->oname[cp-id]) |
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} |
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static |
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static void |
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add2slist(r, sl) /* add source list to ray's */ |
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register RAY *r; |
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register int *sl; |
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} |
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int |
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m_mist(m, r) /* process a ray entering or leaving some mist */ |
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OBJREC *m; |
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register RAY *r; |
