src/common/face.h

/* RCSid $Id: face.h,v 2.4 2003/06/06 16:38:47 schorsch Exp $ */
/*
 *  face.h - header for routines using polygonal faces.
 */
#ifndef _RAD_FACE_H_
#define _RAD_FACE_H_
#ifdef __cplusplus
extern "C" {
#endif

#include "copyright.h"

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

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


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


#ifdef __cplusplus
}
#endif
#endif /* _RAD_FACE_H_ */

Revision:	2.5
Committed:	Thu Jun 26 00:58:09 2003 UTC (20 years, 10 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
Changes since 2.4:	+4 -4 lines
Log Message:	Abstracted process and path handling for Windows. Renamed FLOAT to RREAL because of conflict on Windows. Added conditional compiles for some signal handlers.
#	User	Rev	Content
1	schorsch	2.5	/* RCSid $Id: face.h,v 2.4 2003/06/06 16:38:47 schorsch Exp $ */
2	greg	1.1	/*
3			* face.h - header for routines using polygonal faces.
4	greg	2.2	*/
5	schorsch	2.4	#ifndef _RAD_FACE_H_
6			#define _RAD_FACE_H_
7			#ifdef __cplusplus
8			extern "C" {
9			#endif
10	greg	2.2
11	greg	2.3	#include "copyright.h"
12	greg	1.1
13			#define VERTEX(f,n) ((f)->va + 3*(n))
14
15			typedef struct { /* a polygonal face */
16			FVECT norm; /* the plane's unit normal */
17	schorsch	2.5	RREAL offset; /* plane equation: DOT(norm, v) == offset */
18			RREAL area; /* area of face */
19			RREAL va; / vertex array (o->oargs.farg) */
20	greg	1.1	short nv; /* # of vertices */
21			short ax; /* axis closest to normal */
22			} FACE;
23
24	greg	2.2
25			extern FACE getface(OBJREC o);
26			extern void freeface(OBJREC *o);
27			extern int inface(FVECT p, FACE *f);
28
29	schorsch	2.4
30			#ifdef __cplusplus
31			}
32	greg	2.2	#endif
33	schorsch	2.4	#endif /* _RAD_FACE_H_ */
34