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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 2.21 by greg, Sat Apr 19 02:39:44 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 + extern double  maxarad;         /* maximum ambient radius */
39 + extern double  minarad;         /* minimum ambient radius */
40 +
41 + #ifndef AVGREFL
42 + #define  AVGREFL        0.5     /* assumed average reflectance */
43 + #endif
44 +
45 + #define  AMBVALSIZ      63      /* number of bytes in portable AMBVAL struct */
46 + #define  AMBMAGIC       558     /* magic number for ambient value files */
47 + #define  AMBFMT         "Radiance_ambval"       /* format id string */
48 +
49 +                                        /* defined in ambient.c */
50 + extern void     setambres(int ar);
51 + extern void     setambacc(double newa);
52 + extern void     setambient(void);
53 + extern void     multambient(COLOR aval, RAY *r, FVECT nrm);
54 + extern void     ambdone(void);
55 + extern void     ambnotify(OBJECT obj);
56 + extern int      ambsync(void);
57 +                                        /* defined in ambcomp.c */
58 + extern int      doambient(COLOR acol, RAY *r, double wt,
59 +                                FVECT uv[2], float rad[2],
60 +                                float gpos[2], float gdir[2]);
61 +                                        /* defined in ambio.c */
62 + extern void     putambmagic(FILE *fp);
63 + extern int      hasambmagic(FILE *fp);
64 + extern int      writambval(AMBVAL *av, FILE *fp);
65 + extern int      readambval(AMBVAL *av, FILE *fp);
66 + extern int      ambvalOK(AMBVAL *av);
67 +
68 + #else /* ! NEWAMB */
69 +
70   /*
71   * Since we've defined our vectors as float below to save space,
72   * watch out for changes in the definitions of VCOPY() and DOT()
73   * and don't pass these vectors to fvect routines.
74   */
75   typedef struct ambrec {
76 +        struct ambrec  *next;   /* next in list */
77          unsigned long  latick;  /* last accessed tick */
78          float  pos[3];          /* position in space */
79          float  dir[3];          /* normal direction */
80 <        int  lvl;               /* recursion level of parent ray */
80 >        int    lvl;             /* recursion level of parent ray */
81          float  weight;          /* weight of parent ray */
82          float  rad;             /* validity radius */
83          COLOR  val;             /* computed ambient value */
84          float  gpos[3];         /* gradient wrt. position */
85          float  gdir[3];         /* gradient wrt. direction */
80 –        struct ambrec  *next;   /* next in list */
86   }  AMBVAL;                      /* ambient value */
87  
88   typedef struct ambtree {
# Line 86 | Line 91 | typedef struct ambtree {
91   }  AMBTREE;                     /* ambient octree */
92  
93   typedef struct {
94 <        short  t, p;            /* theta, phi indices */
90 <        COLOR  v;               /* value sum */
94 >        COLOR  v;               /* division sum (partial) */
95          float  r;               /* 1/distance sum */
96          float  k;               /* variance for this division */
97 <        int  n;                 /* number of subsamples */
97 >        int    n;               /* number of subsamples */
98 >        unsigned short  t, p;   /* theta, phi indices */
99   }  AMBSAMP;             /* ambient sample division */
100  
101   typedef struct {
102          FVECT  ux, uy, uz;      /* x, y and z axis directions */
103 <        short  nt, np;          /* number of theta and phi directions */
103 >        COLOR  acoef;           /* division contribution coefficient */
104 >        int    ns;              /* number of super-samples */
105 >        int    nt, np;          /* number of theta and phi directions */
106   }  AMBHEMI;             /* ambient sample hemisphere */
107  
108   extern double  maxarad;         /* maximum ambient radius */
109   extern double  minarad;         /* minimum ambient radius */
110  
111 + #ifndef AVGREFL
112   #define  AVGREFL        0.5     /* assumed average reflectance */
113 + #endif
114  
115   #define  AMBVALSIZ      75      /* number of bytes in portable AMBVAL struct */
116   #define  AMBMAGIC       557     /* magic number for ambient value files */
117   #define  AMBFMT         "Radiance_ambval"       /* format id string */
118  
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);
119                                          /* defined in ambient.c */
120   extern void     setambres(int ar);
121   extern void     setambacc(double newa);
122   extern void     setambient(void);
123 + extern void     multambient(COLOR aval, RAY *r, FVECT nrm);
124   extern void     ambdone(void);
125   extern void     ambnotify(OBJECT obj);
150 – extern void     ambient(COLOR acol, RAY *r, FVECT nrm);
151 – extern double   sumambient(COLOR acol, RAY *r, FVECT rn, int al,
152 –                                AMBTREE *at, FVECT c0, double s);
153 – extern double   makeambient(COLOR acol, RAY *r, FVECT rn, int al);
154 – extern void     extambient(COLOR cr, AMBVAL *ap, FVECT pv, FVECT nv);
126   extern int      ambsync(void);
127 +                                        /* defined in ambcomp.c */
128 + extern double   doambient(COLOR acol, RAY *r, double wt,
129 +                                        FVECT pg, FVECT dg);
130 + extern void     inithemi(AMBHEMI *hp, COLOR ac, RAY *r, double wt);
131 + extern int      divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r);
132 + extern void     comperrs(AMBSAMP *da, AMBHEMI *hp);
133 + extern void     posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
134 + extern void     dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
135                                          /* defined in ambio.c */
136   extern void     putambmagic(FILE *fp);
137   extern int      hasambmagic(FILE *fp);
138   extern int      writambval(AMBVAL *av, FILE *fp);
139   extern int      ambvalOK(AMBVAL *av);
140   extern int      readambval(AMBVAL *av, FILE *fp);
162 –                                        /* defined in lookamb.c */
163 – extern void     lookamb(FILE *fp);
164 – extern void     writamb(FILE *fp);
141  
142 + #endif  /* ! NEWAMB */
143 +
144 + #ifdef __cplusplus
145 + }
146   #endif
147 + #endif /* _RAD_AMBIENT_H_ */
148 +

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