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" |
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}; |
120 |
|
} |
121 |
|
|
122 |
|
|
123 |
+ |
void |
124 |
|
setflatss(src) /* set sampling for a flat source */ |
125 |
|
register SRCREC *src; |
126 |
|
{ |
140 |
|
} |
141 |
|
|
142 |
|
|
143 |
+ |
void |
144 |
|
fsetsrc(src, so) /* set a face as a source */ |
145 |
|
register SRCREC *src; |
146 |
|
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]); |
184 |
|
} |
185 |
|
|
186 |
|
|
187 |
+ |
void |
188 |
|
ssetsrc(src, so) /* set a source as a source */ |
189 |
|
register SRCREC *src; |
190 |
|
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; |
234 |
|
} |
235 |
|
|
236 |
|
|
237 |
+ |
void |
238 |
|
rsetsrc(src, so) /* set a ring (disk) as a source */ |
239 |
|
register SRCREC *src; |
240 |
|
OBJREC *so; |
256 |
|
} |
257 |
|
|
258 |
|
|
259 |
+ |
void |
260 |
|
cylsetsrc(src, so) /* set a cylinder as a source */ |
261 |
|
register SRCREC *src; |
262 |
|
OBJREC *so; |
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]; |
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; |
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; |
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 */ |
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 |
|
} |