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root/radiance/ray/src/rt/ambient.h
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Comparing ray/src/rt/ambient.h (file contents):
Revision 2.14 by greg, Sat May 28 22:27:54 2005 UTC vs.
Revision 2.19 by greg, Fri Apr 11 20:31:37 2014 UTC

# Line 4 | Line 4
4   *
5   * Include after ray.h
6   */
7 +
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 */
# Line 25 | Line 107 | typedef struct ambrec {
107          COLOR  val;             /* computed ambient value */
108          float  gpos[3];         /* gradient wrt. position */
109          float  gdir[3];         /* gradient wrt. direction */
28 –        struct ambrec  *next;   /* next in list */
110   }  AMBVAL;                      /* ambient value */
111  
112   typedef struct ambtree {
# Line 34 | Line 115 | typedef struct ambtree {
115   }  AMBTREE;                     /* ambient octree */
116  
117   typedef struct {
118 <        short  t, p;            /* theta, phi indices */
38 <        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 {
45 –        COLOR  acoef;           /* ambient contribution coefficient */
46 –        float  drc;             /* daughter ray coefficient */
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 */
# Line 67 | Line 147 | 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 double   sumambient(COLOR acol, RAY *r, double rw, FVECT rn, int al,
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, COLOR ac, FVECT rn, int al);
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, COLOR ac, double wt,
156 > extern double   doambient(COLOR acol, RAY *r, double wt,
157                                          FVECT pg, FVECT dg);
158 < extern void     inithemi(AMBHEMI *hp, RAY *r, COLOR ac, double wt);
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);
# Line 86 | Line 166 | 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);
89 –                                        /* defined in lookamb.c */
90 – extern void     lookamb(FILE *fp);
91 – extern void     writamb(FILE *fp);
169  
170 + #endif  /* ! NEWAMB */
171  
172   #ifdef __cplusplus
173   }

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