--- ray/src/hd/holo.h	1998/01/01 10:12:24	3.11
+++ ray/src/hd/holo.h	1998/01/07 21:27:29	3.14
@@ -73,9 +73,8 @@ typedef struct holo {
 	int	fd;		/* file descriptor */
 	short	dirty;		/* beam index needs update to file */
 	double	tlin;		/* linear range for depth encoding */
-	FVECT	wn[3];		/* wall normals (derived) */
-	double	wg[3];		/* wall grid multipliers (derived) */
-	double	wo[6];		/* wall offsets (derived) */
+	FVECT	wg[3];		/* wall grid vectors (derived) */
+	double	wo[6];		/* wall grid offsets (derived) */
 	int	wi[6];		/* wall super-indices (derived) */
 	char	*priv;		/* pointer to private client data */
 	BEAM	**bl;		/* beam pointers (memory cache) */
@@ -87,7 +86,7 @@ typedef struct {
 	int	b;		/* beam index */
 } HDBEAMI;		/* holodeck beam index */
 
-#define nbeams(hp)	(2*((hp)->wi[5]-1))
+#define nbeams(hp)	(((hp)->wi[5]-1)<<1)
 #define biglob(hp)	((hp)->bi)
 #define blglob(hp)	(*(hp)->bl)
 
@@ -100,15 +99,19 @@ extern HOLO	*hdinit(), *hdalloc();
 extern BEAM	*hdgetbeam();
 extern RAYVAL	*hdnewrays();
 extern unsigned	hdmemuse();
-extern long	hdfiluse(), hdfilen();
+extern long	hdfiluse(), hdfilen(), hdallocfrag();
 extern double	hdray(), hdinter();
 extern unsigned	hdcode();
+extern int	hdfilord();
 
 extern unsigned	hdcachesize;		/* target cache size (bytes) */
 extern unsigned long	hdclock;	/* holodeck system clock */
 extern HOLO	*hdlist[HDMAX+1];	/* holodeck pointers (NULL term.) */
 
 extern float	hd_depthmap[];		/* depth conversion map */
+
+extern int	hdwg0[6];		/* wall grid 0 index */
+extern int	hdwg1[6];		/* wall grid 1 index */
 
 #define hddepth(hp,dc)	( (dc) >= DCINF ? FHUGE : \
 				(hp)->tlin * ( (dc) >= DCLIN ? \