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#ifndef lint |
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static const char RCSid[] = "$Id$"; |
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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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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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#include "copyright.h" |
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#include "ray.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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#include "rtotypes.h" |
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/* |
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* A mist volume is used to specify a region in the scene where a certain |
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#define RELAYDELIM '>' /* relay delimiter character */ |
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static int inslist(int *sl, int n); |
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static int srcmatch(SRCREC *sp, char *id); |
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static void add2slist(RAY *r, int *sl); |
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|
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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 int n; |
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inslist( /* return index of source n if it's in list sl */ |
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register int *sl, |
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register int n |
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) |
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{ |
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register int i; |
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static int |
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srcmatch(sp, id) /* check for an id match on a light source */ |
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register SRCREC *sp; |
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register char *id; |
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srcmatch( /* check for an id match on a light source */ |
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register SRCREC *sp, |
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register char *id |
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) |
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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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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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add2slist( /* 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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{ |
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static int slspare[MAXSLIST+1]; /* in case of emergence */ |
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register int i; |
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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; |
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extern int |
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m_mist( /* process a ray entering or leaving some mist */ |
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OBJREC *m, |
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register RAY *r |
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) |
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{ |
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RAY p; |
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int *myslist = NULL; |
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} else { /* leaving ray */ |
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if (myslist != NULL) { /* delete from list */ |
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for (j = myslist[0]; j > 0; j--) |
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if (i = inslist(p.slights, myslist[j])) |
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if ( (i = inslist(p.slights, myslist[j])) ) |
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p.slights[i] = -1; |
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for (i = 0, j = 1; j <= p.slights[0]; j++) |
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if (p.slights[j] != -1) |
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return(1); |
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memerr: |
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error(SYSTEM, "out of memory in m_mist"); |
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return 0; /* pro forma return */ |
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} |