--- ray/src/cv/mgflib/parser.h	1995/05/11 20:17:36	1.24
+++ ray/src/cv/mgflib/parser.h	1995/11/29 19:55:42	1.28
@@ -8,7 +8,10 @@
 
 /* must include stdio.h before us */
 
-			/* Entities (order doesn't really matter) */
+#define MG_VMAJOR	1		/* major version number */
+#define MG_VMINOR	1		/* minor version number */
+
+			/* Entities (list is only appended, never modified) */
 #define MG_E_COMMENT	0		/* #		*/
 #define MG_E_COLOR	1		/* c		*/
 #define MG_E_CCT	2		/* cct		*/
@@ -37,9 +40,12 @@
 #define MG_E_TS		25		/* ts		*/
 #define MG_E_VERTEX	26		/* v		*/
 #define MG_E_XF		27		/* xf		*/
+			/* end of Version 1 entities */
 
 #define MG_NENTITIES	28		/* total # entities */
 
+#define MG_NELIST	{28}		/* entity count for version 1 and up */
+
 #define MG_NAMELIST	{"#","c","cct","cone","cmix","cspec","cxy","cyl","ed",\
 			"f","i","ies","ir","m","n","o","p","prism","rd",\
 			"ring","rs","sides","sph","td","torus","ts","v","xf"}
@@ -49,7 +55,6 @@
 extern char	mg_ename[MG_NENTITIES][MG_MAXELEN];
 
 			/* Handler routines for each entity and unknown ones */
-
 #ifdef NOPROTO
 extern int	(*mg_ehand[MG_NENTITIES])();
 extern int	(*mg_uhand)();
@@ -74,8 +79,10 @@ extern unsigned	mg_nunknown;		/* count of unknown enti
 #define MG_EMEM		8		/* out of memory */
 #define MG_ESEEK	9		/* file seek error */
 #define MG_EBADMAT	10		/* bad material specification */
+#define MG_ELINE	11		/* input line too long */
+#define MG_ECNTXT	12		/* unmatched context close */
 
-#define MG_NERRS	11
+#define MG_NERRS	13
 
 extern char	*mg_err[MG_NERRS];	/* list of error messages */
 
@@ -357,10 +364,10 @@ typedef struct xf_spec {
 extern XF_SPEC	*xf_context;			/* current transform context */
 extern char	**xf_argend;			/* last transform argument */
 
-#define xf_ac(xf)	((xf)->xac)
+#define xf_ac(xf)	((xf)==NULL ? 0 : (xf)->xac)
 #define xf_av(xf)	(xf_argend - (xf)->xac)
 
-#define xf_argc		(xf_context==NULL ? 0 : xf_ac(xf_context))
+#define xf_argc		xf_ac(xf_context)
 #define xf_argv		xf_av(xf_context)
 
 /*
@@ -386,6 +393,10 @@ extern void	xf_clear();		/* clear xf stack */
 
 /* The following are support routines you probably won't call directly */
 
+XF_SPEC		*new_xf();		/* allocate new transform */
+void		free_xf();		/* free a transform */
+int		xf_aname();		/* name this instance */
+long		comp_xfid();		/* compute unique ID */
 extern void	multmat4();		/* m4a = m4b X m4c */
 extern void	multv3();		/* v3a = v3b X m4 (vectors) */
 extern void	multp3();		/* p3a = p3b X m4 (points) */
@@ -402,6 +413,10 @@ extern void	xf_clear(void);			/* clear xf stack */
 
 /* The following are support routines you probably won't call directly */
 
+XF_SPEC		*new_xf(int, char **);		/* allocate new transform */
+void		free_xf(XF_SPEC *);		/* free a transform */
+int		xf_aname(struct xf_array *);	/* name this instance */
+long		comp_xfid(MAT4);		/* compute unique ID */
 extern void	multmat4(MAT4, MAT4, MAT4);	/* m4a = m4b X m4c */
 extern void	multv3(FVECT, FVECT, MAT4);	/* v3a = v3b X m4 (vectors) */
 extern void	multp3(FVECT, FVECT, MAT4);	/* p3a = p3b X m4 (points) */