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 */

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 */
        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 */
Revision:	1.2
Committed:	Wed Jun 7 08:35:12 1989 UTC (34 years, 10 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.1:	+11 -18 lines
Log Message:	Efficient approximation to direct component with many sources Glow type changed Spot type eliminated
#	Content
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
14	typedef struct {
15	short sflags; /* source flags */
16	FVECT sloc; /* direction or position of source */
17	float ss; /* tangent or disk radius */
18	float ss2; /* domega or projected area */
19	long ntests, nhits; /* shadow tests and hits */
20	OBJREC so; / source object */
21	} SRCREC; /* light source */
22
23	typedef struct {
24	int sno; /* source number */
25	FVECT dir; /* source direction */
26	float dom; /* domega for source */
27	float brt; /* brightness (for comparison) */
28	COLOR val; /* contribution */
29	} CONTRIB; /* direct contribution */
30
31	extern SRCREC source; / our source list */
32	extern int nsources; /* the number of sources */
33
34	extern double srcray(); /* ray to source */