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/* Copyright (c) 1995 Regents of the University of California */ |
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|
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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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* Routines for simulating virtual light sources |
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* Thus far, we only support planar mirrors. |
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* |
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* External symbols declared in source.h |
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*/ |
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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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|
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#include "ray.h" |
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#include "octree.h" |
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#include "otypes.h" |
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#include "source.h" |
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#define STESTMAX 32 /* maximum seeks per sample */ |
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double getdisk(); |
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static OBJECT *vobject; /* virtual source objects */ |
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static int nvobjects = 0; /* number of virtual source objects */ |
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void |
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markvirtuals() /* find and mark virtual sources */ |
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{ |
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register OBJREC *o; |
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for (i = nsources; i-- > 0; ) |
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addvirtuals(i, directrelay); |
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/* done with our object list */ |
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free((char *)vobject); |
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free((void *)vobject); |
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nvobjects = 0; |
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} |
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void |
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addvirtuals(sn, nr) /* add virtuals associated with source */ |
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int sn; |
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int nr; |
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} |
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void |
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vproject(o, sn, n) /* create projected source(s) if they exist */ |
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OBJREC *o; |
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int sn; |
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m = objptr(i); |
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if (m->otype != MAT_ILLUM || m->oargs.nsargs < 1 || |
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!strcmp(m->oargs.sarg[0], VOIDID) || |
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(i = modifier(m->oargs.sarg[0])) == OVOID) |
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(i = lastmod(objndx(m), m->oargs.sarg[0])) == OVOID) |
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return(m); /* direct modifier */ |
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return(objptr(i)); /* illum alternate */ |
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} |
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normalize(nsloc); |
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VCOPY(ourspot.aim, ocent); |
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ourspot.siz = PI*maxrad2; |
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ourspot.flen = 0.; |
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ourspot.flen = -1.; |
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if (source[sn].sflags & SSPOT) { |
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multp3(theirspot.aim, source[sn].sl.s->aim, pm); |
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/* adjust for source size */ |
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#ifdef DEBUG |
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void |
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virtverb(sn, fp) /* print verbose description of virtual source */ |
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register int sn; |
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FILE *fp; |