--- ray/src/hd/rhd_qtree.h	2003/06/20 00:25:49	3.15
+++ ray/src/hd/rhd_qtree.h	2004/01/01 11:21:55	3.17
@@ -1,12 +1,18 @@
-/* RCSid $Id: rhd_qtree.h,v 3.15 2003/06/20 00:25:49 greg Exp $ */
+/* RCSid $Id: rhd_qtree.h,v 3.17 2004/01/01 11:21:55 schorsch Exp $ */
 /*
  * Quadtree data structures for holodeck display drivers.
  */
+#ifndef _RAD_RHD_QTREE_H_
+#define _RAD_RHD_QTREE_H_
 
 #include "color.h"
 #include "tonemap.h"
 #include "rhdriver.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
 #define	DL		0		/* down left */
 #define	DR		1		/* down right */
 #define	UL		2		/* up left */
@@ -49,5 +55,24 @@ extern int	qtMinNodesiz;	/* minimum node dimension (pi
 
 extern int	rayqleft;	/* number of rays to queue before flush */
 
+/*
 extern int32	encodedir();
 extern double	fdir2diff(), dir2diff();
+*/
+
+	/* rhd_qtree.c */
+extern int qtAllocLeaves(register int n);
+extern void qtFreeLeaves(void);
+extern int qtCompost(int pct);
+extern void qtReplant(void);
+extern int qtFindLeaf(int x, int y);
+extern int qtMapLeaves(int redo);
+	/* rhd_qtree2c.c rhd_qtree2r.c */
+extern void qtRedraw(int x0, int y0, int x1, int y1);
+extern void qtUpdate(void);
+
+#ifdef __cplusplus
+}
+#endif
+#endif /* _RAD_RHD_QTREE_H_ */
+