--- ray/src/common/octree.c	1989/10/14 10:56:32	1.2
+++ ray/src/common/octree.c	2009/11/01 04:41:55	2.8
@@ -1,15 +1,12 @@
-/* Copyright (c) 1986 Regents of the University of California */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ LBL";
+static const char	RCSid[] = "$Id: octree.c,v 2.8 2009/11/01 04:41:55 greg Exp $";
 #endif
-
 /*
  *  octree.c - routines dealing with octrees and cubes.
- *
- *     7/28/85
  */
 
+#include "copyright.h"
+
 #include  "standard.h"
 
 #include  "octree.h"
@@ -22,7 +19,7 @@ static OCTREE  treetop = 0;		/* next free node */
 OCTREE
 octalloc()			/* allocate an octree */
 {
-	register OCTREE  freet;
+	OCTREE  freet;
 
 	if ((freet = ofreelist) != EMPTY) {
 		ofreelist = octkid(freet, 0);
@@ -34,18 +31,19 @@ octalloc()			/* allocate an octree */
 		if (octbi(freet) >= MAXOBLK)
 			return(EMPTY);
 		if ((octblock[octbi(freet)] = (OCTREE *)malloc(
-				(unsigned)256*8*sizeof(OCTREE))) == NULL)
+				(unsigned)OCTBLKSIZ*8*sizeof(OCTREE))) == NULL)
 			return(EMPTY);
 	}
-	treetop += 8;
+	treetop++;
 	return(freet);
 }
 
 
+void
 octfree(ot)			/* free an octree */
-register OCTREE  ot;
+OCTREE  ot;
 {
-	register int  i;
+	int  i;
 
 	if (!istree(ot))
 		return;
@@ -56,12 +54,28 @@ register OCTREE  ot;
 }
 
 
+void
+octdone()			/* free EVERYTHING */
+{
+	int	i;
+
+	for (i = 0; i < MAXOBLK; i++) {
+		if (octblock[i] == NULL)
+			break;
+		free((void *)octblock[i]);
+		octblock[i] = NULL;
+	}
+	ofreelist = EMPTY;
+	treetop = 0;
+}
+
+
 OCTREE
 combine(ot)			/* recursively combine nodes */
-register OCTREE  ot;
+OCTREE  ot;
 {
-	register int  i;
-	register OCTREE  ores;
+	int  i;
+	OCTREE  ores;
 
 	if (!istree(ot))	/* not a tree */
 		return(ot);
@@ -77,11 +91,12 @@ register OCTREE  ot;
 }
 
 
+void
 culocate(cu, pt)		/* locate point within cube */
-register CUBE  *cu;
-register FVECT  pt;
+CUBE  *cu;
+FVECT  pt;
 {
-	register int  i;
+	int  i;
 	int  branch;
 
 	while (istree(cu->cutree)) {
@@ -97,18 +112,10 @@ register FVECT  pt;
 }
 
 
-cucopy(cu1, cu2)		/* copy cu2 into cu1 */
-register CUBE  *cu1, *cu2;
-{
-	cu1->cutree = cu2->cutree;
-	cu1->cusize = cu2->cusize;
-	VCOPY(cu1->cuorg, cu2->cuorg);
-}
-
-
+int
 incube(cu, pt)			/* determine if a point is inside a cube */
-register CUBE  *cu;
-register FVECT  pt;
+CUBE  *cu;
+FVECT  pt;
 {
 	if (cu->cuorg[0] > pt[0] || pt[0] >= cu->cuorg[0] + cu->cusize)
 		return(0);