src/rt/source.h

/* Copyright (c) 1986 Regents of the University of California */

/* SCCSid "$SunId$ LBL" */

/*
 *  source.h - header file for ray tracing sources.
 *
 *     8/20/85
 */

#define  SDISTANT       01              /* source distant flag */
#define  SSKIP          02              /* source skip flag */
#define  SPROX          04              /* source proximity flag */
#define  SSPOT          010             /* source spotlight flag */

typedef struct {
        float  siz;             /* output solid angle */
        float  flen;            /* focal length */
        FVECT  aim;             /* aim direction */
} SPOT;                 /* spotlight */

typedef struct {
        short  sflags;          /* source flags */
        FVECT  sloc;            /* direction or position of source */
        float  ss;              /* tangent or disk radius */
        float  ss2;             /* domega or projected area */
        union {
                float  prox;            /* proximity */
                SPOT  *s;               /* spot */
        } sl;                   /* localized source information */
        long  ntests, nhits;    /* shadow tests and hits */
        OBJREC  *so;            /* source object */
}  SRCREC;              /* light source */

typedef struct {
        int  sno;               /* source number */
        FVECT  dir;             /* source direction */
        float  dom;             /* domega for source */
        float  brt;             /* brightness (for comparison) */
        COLOR  val;             /* contribution */
}  CONTRIB;             /* direct contribution */

extern SRCREC  *source;                 /* our source list */
extern int  nsources;                   /* the number of sources */

extern double  srcray();                /* ray to source */

extern SPOT  *makespot();               /* make spotlight */
Revision:	1.3
Committed:	Wed Jun 7 10:29:01 1989 UTC (34 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+14 -0 lines
Log Message:	reinstated spot and glow types
#	User	Rev	Content
1	greg	1.1	/* Copyright (c) 1986 Regents of the University of California */
2
3			/* SCCSid "$SunId$ LBL" */
4
5			/*
6			* source.h - header file for ray tracing sources.
7			*
8			* 8/20/85
9			*/
10
11			#define SDISTANT 01 /* source distant flag */
12			#define SSKIP 02 /* source skip flag */
13	greg	1.3	#define SPROX 04 /* source proximity flag */
14			#define SSPOT 010 /* source spotlight flag */
15	greg	1.1
16			typedef struct {
17	greg	1.3	float siz; /* output solid angle */
18			float flen; /* focal length */
19			FVECT aim; /* aim direction */
20			} SPOT; /* spotlight */
21
22			typedef struct {
23	greg	1.1	short sflags; /* source flags */
24			FVECT sloc; /* direction or position of source */
25			float ss; /* tangent or disk radius */
26			float ss2; /* domega or projected area */
27	greg	1.3	union {
28			float prox; /* proximity */
29			SPOT s; / spot */
30			} sl; /* localized source information */
31	greg	1.2	long ntests, nhits; /* shadow tests and hits */
32	greg	1.1	OBJREC so; / source object */
33	greg	1.2	} SRCREC; /* light source */
34	greg	1.1
35	greg	1.2	typedef struct {
36			int sno; /* source number */
37			FVECT dir; /* source direction */
38			float dom; /* domega for source */
39			float brt; /* brightness (for comparison) */
40			COLOR val; /* contribution */
41			} CONTRIB; /* direct contribution */
42	greg	1.1
43	greg	1.2	extern SRCREC source; / our source list */
44	greg	1.1	extern int nsources; /* the number of sources */
45
46	greg	1.2	extern double srcray(); /* ray to source */
47	greg	1.3
48			extern SPOT makespot(); / make spotlight */