--- ray/src/common/plocate.h	1991/11/12 17:00:42	2.1
+++ ray/src/common/plocate.h	2003/06/27 06:53:21	2.7
@@ -1,14 +1,16 @@
-/* Copyright (c) 1986 Regents of the University of California */
-
-/* SCCSid "$SunId$ LBL" */
-
+/* RCSid $Id: plocate.h,v 2.7 2003/06/27 06:53:21 greg Exp $ */
 /*
  *  plocate.h - header for 3D vector location.
  *
- *     8/28/85
+ *  Include after fvect.h
  */
+#ifndef _RAD_PLOCATE_H_
+#define _RAD_PLOCATE_H_
+#ifdef __cplusplus
+extern "C" {
+#endif
 
-#define  EPSILON	1e-6		/* acceptable location error */
+#define  EPSILON	FTINY		/* acceptable location error */
 
 #define  XPOS		03		/* x position mask */
 #define  YPOS		014		/* y position mask */
@@ -18,3 +20,14 @@
 
 #define  BELOW		025		/* below bits */
 #define  ABOVE		052		/* above bits */
+
+
+extern int	clip(RREAL *ep1, RREAL *ep2, FVECT min, FVECT max);
+extern int	plocate(FVECT p, FVECT min, FVECT max);
+
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_PLOCATE_H_ */
+