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 */

#define  AIMREQT        100             /* required aim success/failure */

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 */
        int  aimsuccess;        /* aim successes - AIMREQT*failures */
        long  ntests, nhits;    /* shadow tests and hits */
        OBJREC  *so;            /* source object */
}  SRCREC;              /* light source */

typedef struct {
        FVECT  dir;             /* source direction */
        float  dom;             /* domega for source */
        COLOR  val;             /* contribution */
}  CONTRIB;             /* direct contribution */

typedef struct {
        int  sno;               /* source number */
        float  brt;             /* brightness (for comparison) */
}  CNTPTR;              /* contribution pointer */

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:	1.5
Committed:	Mon Feb 11 08:43:46 1991 UTC (33 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.4:	+3 -0 lines
Log Message:	changed complaint timing for source aiming failures.
#	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	greg	1.5	#define AIMREQT 100 /* required aim success/failure */
17
18	greg	1.1	typedef struct {
19	greg	1.3	float siz; /* output solid angle */
20			float flen; /* focal length */
21			FVECT aim; /* aim direction */
22			} SPOT; /* spotlight */
23
24			typedef struct {
25	greg	1.1	short sflags; /* source flags */
26			FVECT sloc; /* direction or position of source */
27			float ss; /* tangent or disk radius */
28			float ss2; /* domega or projected area */
29	greg	1.3	union {
30			float prox; /* proximity */
31			SPOT s; / spot */
32			} sl; /* localized source information */
33	greg	1.5	int aimsuccess; /* aim successes - AIMREQTfailures /
34	greg	1.2	long ntests, nhits; /* shadow tests and hits */
35	greg	1.1	OBJREC so; / source object */
36	greg	1.2	} SRCREC; /* light source */
37	greg	1.1
38	greg	1.2	typedef struct {
39			FVECT dir; /* source direction */
40			float dom; /* domega for source */
41			COLOR val; /* contribution */
42			} CONTRIB; /* direct contribution */
43	greg	1.4
44			typedef struct {
45			int sno; /* source number */
46			float brt; /* brightness (for comparison) */
47			} CNTPTR; /* contribution pointer */
48	greg	1.1
49	greg	1.2	extern SRCREC source; / our source list */
50	greg	1.1	extern int nsources; /* the number of sources */
51
52	greg	1.2	extern double srcray(); /* ray to source */
53	greg	1.3
54			extern SPOT makespot(); / make spotlight */