ViewVC Help
View File | Revision Log | Show Annotations | Download File | Root Listing
root/radiance/ray/src/rt/aniso.c
(Generate patch)

Comparing ray/src/rt/aniso.c (file contents):
Revision 2.33 by gwlarson, Wed Dec 16 18:14:57 1998 UTC vs.
Revision 2.34 by greg, Sat Feb 22 02:07:28 2003 UTC

# Line 1 | Line 1
1 – /* Copyright (c) 1998 Silicon Graphics, Inc. */
2 –
1   #ifndef lint
2 < static char SCCSid[] = "$SunId$ SGI";
2 > static const char       RCSid[] = "$Id$";
3   #endif
6 –
4   /*
5   *  Shading functions for anisotropic materials.
6   */
7  
8 + /* ====================================================================
9 + * The Radiance Software License, Version 1.0
10 + *
11 + * Copyright (c) 1990 - 2002 The Regents of the University of California,
12 + * through Lawrence Berkeley National Laboratory.   All rights reserved.
13 + *
14 + * Redistribution and use in source and binary forms, with or without
15 + * modification, are permitted provided that the following conditions
16 + * are met:
17 + *
18 + * 1. Redistributions of source code must retain the above copyright
19 + *         notice, this list of conditions and the following disclaimer.
20 + *
21 + * 2. Redistributions in binary form must reproduce the above copyright
22 + *       notice, this list of conditions and the following disclaimer in
23 + *       the documentation and/or other materials provided with the
24 + *       distribution.
25 + *
26 + * 3. The end-user documentation included with the redistribution,
27 + *           if any, must include the following acknowledgment:
28 + *             "This product includes Radiance software
29 + *                 (http://radsite.lbl.gov/)
30 + *                 developed by the Lawrence Berkeley National Laboratory
31 + *               (http://www.lbl.gov/)."
32 + *       Alternately, this acknowledgment may appear in the software itself,
33 + *       if and wherever such third-party acknowledgments normally appear.
34 + *
35 + * 4. The names "Radiance," "Lawrence Berkeley National Laboratory"
36 + *       and "The Regents of the University of California" must
37 + *       not be used to endorse or promote products derived from this
38 + *       software without prior written permission. For written
39 + *       permission, please contact [email protected].
40 + *
41 + * 5. Products derived from this software may not be called "Radiance",
42 + *       nor may "Radiance" appear in their name, without prior written
43 + *       permission of Lawrence Berkeley National Laboratory.
44 + *
45 + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
46 + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
47 + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
48 + * DISCLAIMED.   IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR
49 + * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
50 + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
51 + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
52 + * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
53 + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
54 + * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
55 + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 + * SUCH DAMAGE.
57 + * ====================================================================
58 + *
59 + * This software consists of voluntary contributions made by many
60 + * individuals on behalf of Lawrence Berkeley National Laboratory.   For more
61 + * information on Lawrence Berkeley National Laboratory, please see
62 + * <http://www.lbl.gov/>.
63 + */
64 +
65   #include  "ray.h"
66  
67   #include  "otypes.h"
# Line 16 | Line 70 | static char SCCSid[] = "$SunId$ SGI";
70  
71   #include  "random.h"
72  
19 – extern double  specthresh;              /* specular sampling threshold */
20 – extern double  specjitter;              /* specular sampling jitter */
21 –
22 – extern int  backvis;                    /* back faces visible? */
23 –
73   #ifndef  MAXITER
74   #define  MAXITER        10              /* maximum # specular ray attempts */
75   #endif
76  
28 – static  agaussamp(), getacoords();
29 –
77   /*
78   *      This routine implements the anisotropic Gaussian
79   *  model described by Ward in Siggraph `92 article.
# Line 68 | Line 115 | typedef struct {
115          double  pdot;           /* perturbed dot product */
116   }  ANISODAT;            /* anisotropic material data */
117  
118 + static void     getacoords();
119 + static void     agaussamp();
120  
121 +
122 + static void
123   diraniso(cval, np, ldir, omega)         /* compute source contribution */
124   COLOR  cval;                    /* returned coefficient */
125   register ANISODAT  *np;         /* material data */
# Line 182 | Line 233 | double  omega;                 /* light source size */
233   }
234  
235  
236 + int
237   m_aniso(m, r)                   /* shade ray that hit something anisotropic */
238   register OBJREC  *m;
239   register RAY  *r;
# Line 307 | Line 359 | register RAY  *r;
359   }
360  
361  
362 < static
362 > static void
363   getacoords(r, np)               /* set up coordinate system */
364   RAY  *r;
365   register ANISODAT  *np;
# Line 337 | Line 389 | register ANISODAT  *np;
389   }
390  
391  
392 < static
392 > static void
393   agaussamp(r, np)                /* sample anisotropic gaussian specular */
394   RAY  *r;
395   register ANISODAT  *np;

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines