--- ray/src/hd/rhdisp.h	1998/01/04 18:37:11	3.10
+++ ray/src/hd/rhdisp.h	2003/07/14 22:24:00	3.15
@@ -1,11 +1,14 @@
-/* Copyright (c) 1997 Silicon Graphics, Inc. */
-
-/* SCCSid "$SunId$ SGI" */
-
+/* RCSid: $Id: rhdisp.h,v 3.15 2003/07/14 22:24:00 schorsch Exp $ */
 /*
  * Header for holodeck display drivers.
  */
+#ifndef _RAD_RHDISP_H_
+#define _RAD_RHDISP_H_
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 				/* display requests */
 #define DR_NOOP		0		/* to release from vain DR_ATTEN */
 #define DR_BUNDLE	1		/* lone bundle request */
@@ -18,6 +21,7 @@
 #define DR_KILL		8		/* kill rtrace process(es) */
 #define DR_RESTART	9		/* restart rtrace */
 #define DR_CLOBBER	10		/* clobber holodeck */
+#define DR_VIEWPOINT	11		/* set desired eye position */
 
 				/* server responses */
 #define DS_BUNDLE	32		/* computed bundle */
@@ -27,6 +31,7 @@
 #define DS_STARTIMM	36		/* begin immediate bundle set */
 #define DS_ENDIMM	37		/* end immediate bundle set */
 #define DS_OUTSECT	38		/* render from outside sections */
+#define DS_EYESEP	39		/* eye separation distance */
 
 /*
  * Normally, the server channel has priority, with the display process
@@ -43,8 +48,8 @@
 #endif
 
 typedef struct {
-	int2	type;		/* message type */
-	int4	nbytes;		/* number of additional bytes */
+	int16	type;		/* message type */
+	int32	nbytes;		/* number of additional bytes */
 } MSGHEAD;		/* message head */
 
 /*
@@ -60,3 +65,9 @@ typedef struct {
  * The standard output will always be available for writing, though it
  * may go to /dev/null.
  */
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_RHDISP_H_ */
+