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Comparing ray/src/rt/ambient.h (file contents):
Revision 2.7 by greg, Sat Feb 22 02:07:28 2003 UTC vs.
Revision 2.19 by greg, Fri Apr 11 20:31:37 2014 UTC

# Line 1 | Line 1
1 < /* RCSid: $Id$ */
1 > /* RCSid $Id$ */
2   /*
3   * Common definitions for interreflection routines.
4   *
5   * Include after ray.h
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/>.
8 > #ifndef _RAD_AMBIENT_H_
9 > #define _RAD_AMBIENT_H_
10 > #ifdef __cplusplus
11 > extern "C" {
12 > #endif
13 >
14 > #ifdef NEWAMB
15 >
16 > /*
17 > * Normal and u-vector directions encoded using dircode.c
18   */
19 + typedef struct ambrec {
20 +        struct ambrec  *next;   /* next in list */
21 +        unsigned long  latick;  /* last accessed tick */
22 +        float  pos[3];          /* position in space */
23 +        int32  ndir;            /* encoded surface normal */
24 +        int32  udir;            /* u-vector direction */
25 +        int    lvl;             /* recursion level of parent ray */
26 +        float  weight;          /* weight of parent ray */
27 +        float  rad[2];          /* anisotropic radii (rad[0] <= rad[1]) */
28 +        COLOR  val;             /* computed ambient value */
29 +        float  gpos[2];         /* (u,v) gradient wrt. position */
30 +        float  gdir[2];         /* (u,v) gradient wrt. direction */
31 + }  AMBVAL;                      /* ambient value */
32  
33 + typedef struct ambtree {
34 +        AMBVAL  *alist;         /* ambient value list */
35 +        struct ambtree  *kid;   /* 8 child nodes */
36 + }  AMBTREE;                     /* ambient octree */
37 +
38 + typedef struct {
39 +        COLOR  v;               /* division sum (partial) */
40 +        float  r;               /* 1/distance sum */
41 +        float  k;               /* variance for this division */
42 +        int    n;               /* number of subsamples */
43 +        unsigned short  t, p;   /* theta, phi indices */
44 + }  AMBSAMP;             /* ambient sample division */
45 +
46 + typedef struct {
47 +        FVECT  ux, uy, uz;      /* x, y and z axis directions */
48 +        COLOR  acoef;           /* division contribution coefficient */
49 +        int    ns;              /* number of super-samples */
50 +        int    nt, np;          /* number of theta and phi directions */
51 + }  AMBHEMI;             /* ambient sample hemisphere */
52 +
53 + extern double  maxarad;         /* maximum ambient radius */
54 + extern double  minarad;         /* minimum ambient radius */
55 +
56 + #ifndef AVGREFL
57 + #define  AVGREFL        0.5     /* assumed average reflectance */
58 + #endif
59 +
60 + #define  AMBVALSIZ      63      /* number of bytes in portable AMBVAL struct */
61 + #define  AMBMAGIC       558     /* magic number for ambient value files */
62 + #define  AMBFMT         "Radiance_ambval"       /* format id string */
63 +
64 +                                        /* defined in ambient.c */
65 + extern void     setambres(int ar);
66 + extern void     setambacc(double newa);
67 + extern void     setambient(void);
68 + extern void     multambient(COLOR aval, RAY *r, FVECT nrm);
69 + extern void     ambdone(void);
70 + extern void     ambnotify(OBJECT obj);
71 + extern double   sumambient(COLOR acol, RAY *r, FVECT rn, int al,
72 +                                AMBTREE *at, FVECT c0, double s);
73 + extern int      makeambient(COLOR acol, RAY *r, FVECT rn, int al);
74 + extern void     extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv);
75 + extern int      ambsync(void);
76 +                                        /* defined in ambcomp.c */
77 + extern int      doambient(COLOR acol, RAY *r, double wt,
78 +                                FVECT uv[2], float rad[2],
79 +                                float gpos[2], float gdir[2]);
80 + extern void     inithemi(AMBHEMI *hp, COLOR ac, RAY *r, double wt);
81 + extern int      divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r);
82 + extern void     comperrs(AMBSAMP *da, AMBHEMI *hp);
83 + extern void     posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
84 + extern void     dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
85 +                                        /* defined in ambio.c */
86 + extern void     putambmagic(FILE *fp);
87 + extern int      hasambmagic(FILE *fp);
88 + extern int      writambval(AMBVAL *av, FILE *fp);
89 + extern int      ambvalOK(AMBVAL *av);
90 + extern int      readambval(AMBVAL *av, FILE *fp);
91 +
92 + #else /* ! NEWAMB */
93 +
94   /*
95   * Since we've defined our vectors as float below to save space,
96   * watch out for changes in the definitions of VCOPY() and DOT()
97   * and don't pass these vectors to fvect routines.
98   */
99   typedef struct ambrec {
100 +        struct ambrec  *next;   /* next in list */
101          unsigned long  latick;  /* last accessed tick */
102          float  pos[3];          /* position in space */
103          float  dir[3];          /* normal direction */
104 <        int  lvl;               /* recursion level of parent ray */
104 >        int    lvl;             /* recursion level of parent ray */
105          float  weight;          /* weight of parent ray */
106          float  rad;             /* validity radius */
107          COLOR  val;             /* computed ambient value */
108          float  gpos[3];         /* gradient wrt. position */
109          float  gdir[3];         /* gradient wrt. direction */
80 –        struct ambrec  *next;   /* next in list */
110   }  AMBVAL;                      /* ambient value */
111  
112   typedef struct ambtree {
# Line 86 | Line 115 | typedef struct ambtree {
115   }  AMBTREE;                     /* ambient octree */
116  
117   typedef struct {
118 <        short  t, p;            /* theta, phi indices */
90 <        COLOR  v;               /* value sum */
118 >        COLOR  v;               /* division sum (partial) */
119          float  r;               /* 1/distance sum */
120          float  k;               /* variance for this division */
121 <        int  n;                 /* number of subsamples */
121 >        int    n;               /* number of subsamples */
122 >        unsigned short  t, p;   /* theta, phi indices */
123   }  AMBSAMP;             /* ambient sample division */
124  
125   typedef struct {
126          FVECT  ux, uy, uz;      /* x, y and z axis directions */
127 <        short  nt, np;          /* number of theta and phi directions */
127 >        COLOR  acoef;           /* division contribution coefficient */
128 >        int    ns;              /* number of super-samples */
129 >        int    nt, np;          /* number of theta and phi directions */
130   }  AMBHEMI;             /* ambient sample hemisphere */
131  
132   extern double  maxarad;         /* maximum ambient radius */
133   extern double  minarad;         /* minimum ambient radius */
134  
135 + #ifndef AVGREFL
136   #define  AVGREFL        0.5     /* assumed average reflectance */
137 + #endif
138  
139   #define  AMBVALSIZ      75      /* number of bytes in portable AMBVAL struct */
140   #define  AMBMAGIC       557     /* magic number for ambient value files */
141   #define  AMBFMT         "Radiance_ambval"       /* format id string */
142  
110 – #ifdef NOPROTO
111 –
112 – extern int      divsample();
113 – extern double   doambient();
114 – extern void     inithemi();
115 – extern void     comperrs();
116 – extern void     posgradient();
117 – extern void     dirgradient();
118 – extern void     setambres();
119 – extern void     setambacc();
120 – extern void     setambient();
121 – extern void     ambdone();
122 – extern void     ambnotify();
123 – extern void     ambient();
124 – extern double   sumambient();
125 – extern double   makeambient();
126 – extern void     extambient();
127 – extern int      ambsync();
128 – extern void     putambmagic();
129 – extern int      hasambmagic();
130 – extern int      writambval();
131 – extern int      ambvalOK();
132 – extern int      readambval();
133 – extern void     lookamb();
134 – extern void     writamb();
135 –
136 – #else
137 –                                        /* defined in ambcomp.c */
138 – extern int      divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r);
139 – extern double   doambient(COLOR acol, RAY *r, double wt, FVECT pg, FVECT dg);
140 – extern void     inithemi(AMBHEMI *hp, RAY *r, double wt);
141 – extern void     comperrs(AMBSAMP *da, AMBHEMI *hp);
142 – extern void     posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
143 – extern void     dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
143                                          /* defined in ambient.c */
144   extern void     setambres(int ar);
145   extern void     setambacc(double newa);
146   extern void     setambient(void);
147 + extern void     multambient(COLOR aval, RAY *r, FVECT nrm);
148   extern void     ambdone(void);
149   extern void     ambnotify(OBJECT obj);
150 – extern void     ambient(COLOR acol, RAY *r, FVECT nrm);
150   extern double   sumambient(COLOR acol, RAY *r, FVECT rn, int al,
151                                  AMBTREE *at, FVECT c0, double s);
152   extern double   makeambient(COLOR acol, RAY *r, FVECT rn, int al);
153   extern void     extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv);
154   extern int      ambsync(void);
155 +                                        /* defined in ambcomp.c */
156 + extern double   doambient(COLOR acol, RAY *r, double wt,
157 +                                        FVECT pg, FVECT dg);
158 + extern void     inithemi(AMBHEMI *hp, COLOR ac, RAY *r, double wt);
159 + extern int      divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r);
160 + extern void     comperrs(AMBSAMP *da, AMBHEMI *hp);
161 + extern void     posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
162 + extern void     dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
163                                          /* defined in ambio.c */
164   extern void     putambmagic(FILE *fp);
165   extern int      hasambmagic(FILE *fp);
166   extern int      writambval(AMBVAL *av, FILE *fp);
167   extern int      ambvalOK(AMBVAL *av);
168   extern int      readambval(AMBVAL *av, FILE *fp);
162 –                                        /* defined in lookamb.c */
163 – extern void     lookamb(FILE *fp);
164 – extern void     writamb(FILE *fp);
169  
170 + #endif  /* ! NEWAMB */
171 +
172 + #ifdef __cplusplus
173 + }
174   #endif
175 + #endif /* _RAD_AMBIENT_H_ */
176 +

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