--- ray/src/hd/rhd_qtree.h	1997/11/21 13:35:58	3.3
+++ ray/src/hd/rhd_qtree.h	2005/01/07 20:33:02	3.18
@@ -1,18 +1,18 @@
-/* Copyright (c) 1997 Silicon Graphics, Inc. */
-
-/* SCCSid "$SunId$ SGI" */
-
+/* RCSid $Id: rhd_qtree.h,v 3.18 2005/01/07 20:33:02 greg 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"
-				/* quantity of leaves to free at a time */
-#ifndef LFREEPCT
-#define	LFREEPCT	15
+
+#ifdef __cplusplus
+extern "C" {
 #endif
-				/* child ordering */
+
 #define	DL		0		/* down left */
 #define	DR		1		/* down right */
 #define	UL		2		/* up left */
@@ -37,6 +37,7 @@ typedef struct rtree {
 
 extern struct rleaves {
 	float		(*wp)[3];	/* world intersection point array */
+	int32		*wd;		/* world direction array */
 	TMbright	*brt;		/* encoded brightness array */
 	BYTE		(*chr)[3];	/* encoded chrominance array */
 	BYTE		(*rgb)[3];	/* tone-mapped color array */
@@ -46,20 +47,34 @@ extern struct rleaves {
 	char		*base;		/* base of allocated memory */
 }	qtL;			/* our pile of leaves */
 
+#define	is_stump(t)	(!((t)->flgs & (BR_ANY|LF_ANY)))
+
 extern RTREE	qtrunk;		/* trunk of quadtree */
 extern double	qtDepthEps;	/* epsilon to compare depths (z fraction) */
 extern int	qtMinNodesiz;	/* minimum node dimension (pixels) */
 
+extern int	rayqleft;	/* number of rays to queue before flush */
 
-/************************************************************************
- * These driver support routines implement the dev_value() call, but
- * require the following callbacks:
+extern TMstruct	*tmGlobal;	/* global tone-mapping structure */
 
-dev_paintr(rgb, x0, y0, x1, y1)	: paint a rectangle
-BYTE	rgb[3];			: rectangle color
-int	x0, y0, x1, y1;		: rectangle boundaries
+/*
+extern int32	encodedir();
+extern double	fdir2diff(), dir2diff();
+*/
 
-Draws an open rectangle between [x0,x1) and [y0,y1) with the color rgb.
-This function is called many times by qtUpdate(), qtRedraw() and qtReplant().
+	/* 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_ */
+