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Comparing ray/src/rt/ambient.h (file contents):
Revision 2.2 by greg, Mon Jul 13 16:17:48 1992 UTC vs.
Revision 2.22 by greg, Wed May 7 01:16:03 2014 UTC

#	Line 1 | Line 1
1	<	/* Copyright (c) 1991 Regents of the University of California */
1	>	/* RCSid $Id$ */
2	>	/*
3	>	* Common definitions for interreflection routines.
4	>	*
5	>	* Include after ray.h
6	>	*/
7
8	<	/* SCCSid "$SunId$ LBL" */
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	<	* Common definitions for interreflection routines.
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	+	uint32  corral;         /* potential light leak direction flags */
32	+	}  AMBVAL;                      /* ambient value */
33
34	+	typedef struct ambtree {
35	+	AMBVAL  *alist;         /* ambient value list */
36	+	struct ambtree  *kid;   /* 8 child nodes */
37	+	}  AMBTREE;                     /* ambient octree */
38	+
39	+	extern double  maxarad;         /* maximum ambient radius */
40	+	extern double  minarad;         /* minimum ambient radius */
41	+
42	+	#ifndef AVGREFL
43	+	#define  AVGREFL        0.5     /* assumed average reflectance */
44	+	#endif
45	+
46	+	#define  AMBVALSIZ      67      /* number of bytes in portable AMBVAL struct */
47	+	#define  AMBMAGIC       559     /* magic number for ambient value files */
48	+	#define  AMBFMT         "Radiance_ambval"       /* format id string */
49	+
50	+	/* defined in ambient.c */
51	+	extern void     setambres(int ar);
52	+	extern void     setambacc(double newa);
53	+	extern void     setambient(void);
54	+	extern void     multambient(COLOR aval, RAY *r, FVECT nrm);
55	+	extern void     ambdone(void);
56	+	extern void     ambnotify(OBJECT obj);
57	+	extern int      ambsync(void);
58	+	/* defined in ambcomp.c */
59	+	extern int      doambient(COLOR acol, RAY *r, double wt,
60	+	FVECT uv[2], float rad[2],
61	+	float gpos[2], float gdir[2], uint32 *crlp);
62	+	/* defined in ambio.c */
63	+	extern void     putambmagic(FILE *fp);
64	+	extern int      hasambmagic(FILE *fp);
65	+	extern int      writambval(AMBVAL *av, FILE *fp);
66	+	extern int      readambval(AMBVAL *av, FILE *fp);
67	+	extern int      ambvalOK(AMBVAL *av);
68	+
69	+	#else /* ! NEWAMB */
70	+
71		/*
72		* Since we've defined our vectors as float below to save space,
73		* watch out for changes in the definitions of VCOPY() and DOT()
74		* and don't pass these vectors to fvect routines.
75		*/
76		typedef struct ambrec {
77	+	struct ambrec  *next;   /* next in list */
78	+	unsigned long  latick;  /* last accessed tick */
79		float  pos[3];          /* position in space */
80		float  dir[3];          /* normal direction */
81	<	int  lvl;               /* recursion level of parent ray */
81	>	int    lvl;             /* recursion level of parent ray */
82		float  weight;          /* weight of parent ray */
83		float  rad;             /* validity radius */
84		COLOR  val;             /* computed ambient value */
85		float  gpos[3];         /* gradient wrt. position */
86		float  gdir[3];         /* gradient wrt. direction */
23	–	struct ambrec  *next;   /* next in list */
87		}  AMBVAL;                      /* ambient value */
88
89	<	extern COLOR  ambval;           /* global ambient component */
90	<	extern double  ambacc;          /* ambient accuracy */
91	<	extern int  ambres;             /* ambient resolution */
92	<	extern int  ambdiv;             /* number of divisions for calculation */
93	<	extern int  ambssamp;           /* number of super-samples */
94	<	extern int  ambounce;           /* number of ambient bounces */
95	<	extern char  *amblist[];        /* ambient include/exclude list */
96	<	extern int  ambincl;            /* include == 1, exclude == 0 */
89	>	typedef struct ambtree {
90	>	AMBVAL  *alist;         /* ambient value list */
91	>	struct ambtree  *kid;   /* 8 child nodes */
92	>	}  AMBTREE;                     /* ambient octree */
93	>
94	>	typedef struct {
95	>	COLOR  v;               /* division sum (partial) */
96	>	float  r;               /* 1/distance sum */
97	>	float  k;               /* variance for this division */
98	>	int    n;               /* number of subsamples */
99	>	unsigned short  t, p;   /* theta, phi indices */
100	>	}  AMBSAMP;             /* ambient sample division */
101	>
102	>	typedef struct {
103	>	FVECT  ux, uy, uz;      /* x, y and z axis directions */
104	>	COLOR  acoef;           /* division contribution coefficient */
105	>	int    ns;              /* number of super-samples */
106	>	int    nt, np;          /* number of theta and phi directions */
107	>	}  AMBHEMI;             /* ambient sample hemisphere */
108	>
109		extern double  maxarad;         /* maximum ambient radius */
110		extern double  minarad;         /* minimum ambient radius */
111
112	<	extern double  sumambient(), doambient(), makeambient();
38	<
112	>	#ifndef AVGREFL
113		#define  AVGREFL        0.5     /* assumed average reflectance */
114	+	#endif
115
116		#define  AMBVALSIZ      75      /* number of bytes in portable AMBVAL struct */
117	+	#define  AMBMAGIC       557     /* magic number for ambient value files */
118	+	#define  AMBFMT         "Radiance_ambval"       /* format id string */
119	+
120	+	/* defined in ambient.c */
121	+	extern void     setambres(int ar);
122	+	extern void     setambacc(double newa);
123	+	extern void     setambient(void);
124	+	extern void     multambient(COLOR aval, RAY *r, FVECT nrm);
125	+	extern void     ambdone(void);
126	+	extern void     ambnotify(OBJECT obj);
127	+	extern int      ambsync(void);
128	+	/* defined in ambcomp.c */
129	+	extern double   doambient(COLOR acol, RAY *r, double wt,
130	+	FVECT pg, FVECT dg);
131	+	extern void     inithemi(AMBHEMI *hp, COLOR ac, RAY *r, double wt);
132	+	extern int      divsample(AMBSAMP *dp, AMBHEMI *h, RAY *r);
133	+	extern void     comperrs(AMBSAMP *da, AMBHEMI *hp);
134	+	extern void     posgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
135	+	extern void     dirgradient(FVECT gv, AMBSAMP *da, AMBHEMI *hp);
136	+	/* defined in ambio.c */
137	+	extern void     putambmagic(FILE *fp);
138	+	extern int      hasambmagic(FILE *fp);
139	+	extern int      writambval(AMBVAL *av, FILE *fp);
140	+	extern int      ambvalOK(AMBVAL *av);
141	+	extern int      readambval(AMBVAL *av, FILE *fp);
142	+
143	+	#endif  /* ! NEWAMB */
144	+
145	+	#ifdef __cplusplus
146	+	}
147	+	#endif
148	+	#endif /* _RAD_AMBIENT_H_ */
149	+

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