--- ray/src/px/pmap.h	1995/10/11 10:39:28	2.1
+++ ray/src/px/pmap.h	2004/03/28 20:33:14	2.4
@@ -1,8 +1,12 @@
-/* Copyright (c) 1995 Regents of the University of California */
+/* RCSid: $Id: pmap.h,v 2.4 2004/03/28 20:33:14 schorsch Exp $ */
+/* Pmap return codes */
+#ifndef _RAD_PMAP_H_
+#define _RAD_PMAP_H_
 
-/* SCCSid "$SunId$ LBL" */
+#ifdef __cplusplus
+extern "C" {
+#endif
 
-/* Pmap return codes */
 #define PMAP_BAD	-1
 #define PMAP_LINEAR	0
 #define PMAP_PERSP	1
@@ -11,3 +15,15 @@
  *  |c d|
  */
 #define DET2(a,b, c,d) ((a)*(d) - (b)*(c))
+
+
+	/* defined in pmapgen.c */
+extern int pmap_quad_rect(double u0, double v0, double u1, double v1,
+		double qdrl[4][2], double QR[3][3]);
+extern int pmap_square_quad(double qdrl[4][2], double SQ[3][3]);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_PMAP_H_ */
+