--- ray/src/common/octree.h	1989/02/02 10:34:18	1.1
+++ ray/src/common/octree.h	1991/04/18 12:54:26	1.4
@@ -61,9 +61,15 @@ extern CUBE  thescene;			/* the main scene */
 #define  IO_FILES	010		/* object file names */
 #define  IO_BOUNDS	020		/* octree boundary */
 #define  IO_ALL		(~0)		/* everything */
+				/* octree format identifier */
+#define  OCTFMT		"Radiance_octree"
 				/* magic number for octree files */
-#define  OCTMAGIC	(275+sizeof(OBJECT))
+#define  OCTMAGIC	(283+sizeof(OBJECT))
 				/* octree node types */
 #define  OT_EMPTY	0
 #define  OT_FULL	1
 #define  OT_TREE	2
+				/* return values for surface functions */
+#define  O_MISS		0		/* no intersection */
+#define  O_HIT		1		/* intersection */
+#define  O_IN		2		/* cube contained entirely */