src/common/face.h

/* RCSid $Id$ */
/*
 *  face.h - header for routines using polygonal faces.
 */

#include "copyright.h"

#define  VERTEX(f,n)    ((f)->va + 3*(n))

typedef struct {        /* a polygonal face */
        FVECT  norm;            /* the plane's unit normal */
        FLOAT  offset;          /* plane equation:  DOT(norm, v) == offset */
        FLOAT  area;            /* area of face */
        FLOAT  *va;             /* vertex array (o->oargs.farg) */
        short  nv;              /* # of vertices */
        short  ax;              /* axis closest to normal */
} FACE;

#ifdef NOPROTO

extern FACE  *getface();
extern void  freeface();
extern int  inface();

#else

extern FACE  *getface(OBJREC *o);
extern void  freeface(OBJREC *o);
extern int  inface(FVECT p, FACE *f);

#endif
Revision:	2.3
Committed:	Tue Feb 25 02:47:21 2003 UTC (21 years, 8 months ago) by greg
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad3R5
Changes since 2.2:	+2 -57 lines
Log Message:	Replaced inline copyright notice with #include "copyright.h"
#	Content
1	/* RCSid $Id$ */
2	/*
3	* face.h - header for routines using polygonal faces.
4	*/
5
6	#include "copyright.h"
7
8	#define VERTEX(f,n) ((f)->va + 3*(n))
9
10	typedef struct { /* a polygonal face */
11	FVECT norm; /* the plane's unit normal */
12	FLOAT offset; /* plane equation: DOT(norm, v) == offset */
13	FLOAT area; /* area of face */
14	FLOAT va; / vertex array (o->oargs.farg) */
15	short nv; /* # of vertices */
16	short ax; /* axis closest to normal */
17	} FACE;
18
19	#ifdef NOPROTO
20
21	extern FACE *getface();
22	extern void freeface();
23	extern int inface();
24
25	#else
26
27	extern FACE getface(OBJREC o);
28	extern void freeface(OBJREC *o);
29	extern int inface(FVECT p, FACE *f);
30
31	#endif