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root/radiance/ray/src/rt/srcsupp.c
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Comparing ray/src/rt/srcsupp.c (file contents):
Revision 2.5 by greg, Fri Aug 28 14:07:45 1992 UTC vs.
Revision 2.9 by greg, Sat Feb 22 02:07:29 2003 UTC

# Line 1 | Line 1
1 – /* Copyright (c) 1992 Regents of the University of California */
2 –
1   #ifndef lint
2 < static char SCCSid[] = "$SunId$ LBL";
2 > static const char       RCSid[] = "$Id$";
3   #endif
6 –
4   /*
5   *  Support routines for source objects and materials
6 + *
7 + *  External symbols declared in source.h
8   */
9  
10 + /* ====================================================================
11 + * The Radiance Software License, Version 1.0
12 + *
13 + * Copyright (c) 1990 - 2002 The Regents of the University of California,
14 + * through Lawrence Berkeley National Laboratory.   All rights reserved.
15 + *
16 + * Redistribution and use in source and binary forms, with or without
17 + * modification, are permitted provided that the following conditions
18 + * are met:
19 + *
20 + * 1. Redistributions of source code must retain the above copyright
21 + *         notice, this list of conditions and the following disclaimer.
22 + *
23 + * 2. Redistributions in binary form must reproduce the above copyright
24 + *       notice, this list of conditions and the following disclaimer in
25 + *       the documentation and/or other materials provided with the
26 + *       distribution.
27 + *
28 + * 3. The end-user documentation included with the redistribution,
29 + *           if any, must include the following acknowledgment:
30 + *             "This product includes Radiance software
31 + *                 (http://radsite.lbl.gov/)
32 + *                 developed by the Lawrence Berkeley National Laboratory
33 + *               (http://www.lbl.gov/)."
34 + *       Alternately, this acknowledgment may appear in the software itself,
35 + *       if and wherever such third-party acknowledgments normally appear.
36 + *
37 + * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
38 + *       and "The Regents of the University of California" must
39 + *       not be used to endorse or promote products derived from this
40 + *       software without prior written permission. For written
41 + *       permission, please contact [email protected].
42 + *
43 + * 5. Products derived from this software may not be called "Radiance",
44 + *       nor may "Radiance" appear in their name, without prior written
45 + *       permission of Lawrence Berkeley National Laboratory.
46 + *
47 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
48 + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
49 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
50 + * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
51 + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
52 + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
53 + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
54 + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
55 + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
56 + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
57 + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
58 + * SUCH DAMAGE.
59 + * ====================================================================
60 + *
61 + * This software consists of voluntary contributions made by many
62 + * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
63 + * information on Lawrence Berkeley National Laboratory, please see
64 + * <http://www.lbl.gov/>.
65 + */
66 +
67   #include  "ray.h"
68  
69   #include  "otypes.h"
# Line 26 | Line 82 | int  nsources = 0;                     /* the number of sources */
82   SRCFUNC  sfun[NUMOTYPE];                /* source dispatch table */
83  
84  
85 + void
86   initstypes()                    /* initialize source dispatch table */
87   {
88          extern VSMATERIAL  mirror_vs, direct1_vs, direct2_vs;
32 –        extern int  fsetsrc(), ssetsrc(), sphsetsrc(), cylsetsrc(), rsetsrc();
33 –        extern int  nopart(), flatpart(), cylpart();
34 –        extern double  fgetplaneq(), rgetplaneq();
35 –        extern double  fgetmaxdisk(), rgetmaxdisk();
89          static SOBJECT  fsobj = {fsetsrc, flatpart, fgetplaneq, fgetmaxdisk};
90          static SOBJECT  ssobj = {ssetsrc, nopart};
91          static SOBJECT  sphsobj = {sphsetsrc, nopart};
# Line 67 | Line 120 | newsource()                    /* allocate new source in our array */
120   }
121  
122  
123 + void
124   setflatss(src)                          /* set sampling for a flat source */
125   register SRCREC  *src;
126   {
# Line 86 | Line 140 | register SRCREC  *src;
140   }
141  
142  
143 + void
144   fsetsrc(src, so)                        /* set a face as a source */
145   register SRCREC  *src;
146   OBJREC  *so;
# Line 119 | Line 174 | OBJREC  *so;
174          }
175          src->srad = sqrt(src->srad);
176                                                  /* compute size vectors */
177 <        if (f->nv == 4 || (f->nv == 5 &&        /* parallelogram case */
123 <                        dist2(VERTEX(f,0),VERTEX(f,4)) <= FTINY*FTINY))
177 >        if (f->nv == 4)                         /* parallelogram case */
178                  for (j = 0; j < 3; j++) {
179                          src->ss[SU][j] = .5*(VERTEX(f,1)[j]-VERTEX(f,0)[j]);
180                          src->ss[SV][j] = .5*(VERTEX(f,3)[j]-VERTEX(f,0)[j]);
# Line 130 | Line 184 | OBJREC  *so;
184   }
185  
186  
187 + void
188   ssetsrc(src, so)                        /* set a source as a source */
189   register SRCREC  *src;
190   register OBJREC  *so;
# Line 156 | Line 211 | register OBJREC  *so;
211   }
212  
213  
214 + void
215   sphsetsrc(src, so)                      /* set a sphere as a source */
216   register SRCREC  *src;
217   register OBJREC  *so;
# Line 178 | Line 234 | register OBJREC  *so;
234   }
235  
236  
237 + void
238   rsetsrc(src, so)                        /* set a ring (disk) as a source */
239   register SRCREC  *src;
240   OBJREC  *so;
# Line 199 | Line 256 | OBJREC  *so;
256   }
257  
258  
259 + void
260   cylsetsrc(src, so)                      /* set a cylinder as a source */
261   register SRCREC  *src;
262   OBJREC  *so;
# Line 252 | Line 310 | register OBJREC  *m;
310   }
311  
312  
313 < spotout(r, s, dist)             /* check if we're outside spot region */
313 > int
314 > spotout(r, s)                   /* check if we're outside spot region */
315   register RAY  *r;
316   register SPOT  *s;
258 – int  dist;
317   {
318          double  d;
319          FVECT  vd;
320          
321          if (s == NULL)
322                  return(0);
323 <        if (dist) {                     /* distant source */
323 >        if (s->flen < -FTINY) {         /* distant source */
324                  vd[0] = s->aim[0] - r->rorg[0];
325                  vd[1] = s->aim[1] - r->rorg[1];
326                  vd[2] = s->aim[2] - r->rorg[2];
# Line 353 | Line 411 | OBJREC  *op;
411   }
412  
413  
414 + int
415   commonspot(sp1, sp2, org)       /* set sp1 to intersection of sp1 and sp2 */
416   register SPOT  *sp1, *sp2;
417   FVECT  org;
# Line 376 | Line 435 | FVECT  org;
435   }
436  
437  
438 + int
439   commonbeam(sp1, sp2, dir)       /* set sp1 to intersection of sp1 and sp2 */
440   register SPOT  *sp1, *sp2;
441   FVECT  dir;
# Line 400 | Line 460 | FVECT  dir;
460   }
461  
462  
463 + int
464   checkspot(sp, nrm)              /* check spotlight for behind source */
465   register SPOT  *sp;     /* spotlight */
466   FVECT  nrm;             /* source surface normal */
# Line 495 | Line 556 | double  r1s, r2s;              /* radii squared */
556          for (i = 0; i < 3; i++)
557                  cc[i] = c1[i] + l*disp[i];
558          return(a2);
498 – }
499 –
500 –
501 – sourcehit(r)                    /* check to see if ray hit distant source */
502 – register RAY  *r;
503 – {
504 –        int  first, last;
505 –        register int  i;
506 –
507 –        if (r->rsrc >= 0) {             /* check only one if aimed */
508 –                first = last = r->rsrc;
509 –        } else {                        /* otherwise check all */
510 –                first = 0; last = nsources-1;
511 –        }
512 –        for (i = first; i <= last; i++)
513 –                if ((source[i].sflags & (SDISTANT|SVIRTUAL)) == SDISTANT)
514 –                        /*
515 –                         * Check to see if ray is within
516 –                         * solid angle of source.
517 –                         */
518 –                        if (2.0*PI * (1.0 - DOT(source[i].sloc,r->rdir))
519 –                                        <= source[i].ss2) {
520 –                                r->ro = source[i].so;
521 –                                if (!(source[i].sflags & SSKIP))
522 –                                        break;
523 –                        }
524 –
525 –        if (r->ro != NULL) {
526 –                for (i = 0; i < 3; i++)
527 –                        r->ron[i] = -r->rdir[i];
528 –                r->rod = 1.0;
529 –                r->rox = NULL;
530 –                return(1);
531 –        }
532 –        return(0);
559   }

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