src/common/face.h

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

/* SCCSid "$SunId$ LBL" */

/*
 *  face.h - header for routines using polygonal faces.
 *
 *     8/30/85
 */

#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;

extern FACE  *getface();
Revision:	1.3
Committed:	Wed Oct 23 12:19:26 1991 UTC (32 years, 6 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 1.2:	+3 -3 lines
Log Message:	added FLOAT definition for vectors and matrices
#	Content
1	/* Copyright (c) 1986 Regents of the University of California */
2
3	/* SCCSid "$SunId$ LBL" */
4
5	/*
6	* face.h - header for routines using polygonal faces.
7	*
8	* 8/30/85
9	*/
10
11	#define VERTEX(f,n) ((f)->va + 3*(n))
12
13	typedef struct { /* a polygonal face */
14	FVECT norm; /* the plane's unit normal */
15	FLOAT offset; /* plane equation: DOT(norm, v) == offset */
16	FLOAT area; /* area of face */
17	FLOAT va; / vertex array (o->oargs.farg) */
18	short nv; /* # of vertices */
19	short ax; /* axis closest to normal */
20	} FACE;
21
22	extern FACE *getface();