--- ray/src/common/face.h	1989/02/02 10:34:15	1.1
+++ ray/src/common/face.h	2003/06/26 00:58:09	2.5
@@ -1,22 +1,34 @@
-/* Copyright (c) 1986 Regents of the University of California */
-
-/* SCCSid "$SunId$ LBL" */
-
+/* RCSid $Id: face.h,v 2.5 2003/06/26 00:58:09 schorsch Exp $ */
 /*
  *  face.h - header for routines using polygonal faces.
- *
- *     8/30/85
  */
+#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 */
-	double  const;		/* plane equation:  DOT(norm, v) == const */
-	double  area;		/* area of face */
-	double  *va;		/* vertex array (o->oargs.farg) */
+	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();
+
+extern FACE  *getface(OBJREC *o);
+extern void  freeface(OBJREC *o);
+extern int  inface(FVECT p, FACE *f);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_FACE_H_ */
+