--- ray/src/rt/func.h	2003/02/25 02:47:22	2.3
+++ ray/src/rt/func.h	2024/10/29 00:36:54	2.11
@@ -1,37 +1,46 @@
-/* RCSid $Id: func.h,v 2.3 2003/02/25 02:47:22 greg Exp $ */
+/* RCSid $Id: func.h,v 2.11 2024/10/29 00:36:54 greg Exp $ */
 /*
  * Header file for modifiers using function files.
  *
  * Include after ray.h
  */
+#ifndef _RAD_FUNC_H_
+#define _RAD_FUNC_H_
 
-#include "copyright.h"
+#include "calcomp.h"
 
-#include  "calcomp.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
 
 #define  MAXEXPR	9	/* maximum expressions in modifier */
 
 typedef struct {
 	EPNODE  *ep[MAXEXPR+1];		/* NULL-terminated expression list */
 	char  *ctx;			/* context (from file name) */
-	XF  *f, *b;			/* forward and backward transforms */
+	XF  *fxp, *bxp;			/* forward and backward transforms */
 } MFUNC;			/* material function */
 
 extern XF  unitxf;		/* identity transform */
 extern XF  funcxf;		/* current transform */
 
-#ifdef NOPROTO
-
-extern MFUNC	*getfunc();
-extern void	freefunc();
-extern int	setfunc();
-extern void	loadfunc();
-
-#else
-
+extern void	initfunc(void);
+extern void	set_eparams(const char *prms);
 extern MFUNC	*getfunc(OBJREC *m, int ff, unsigned int ef, int dofwd);
 extern void	freefunc(OBJREC *m);
 extern int	setfunc(OBJREC *m, RAY *r);
+extern int	worldfunc(const char *ctx, RAY *r);
 extern void	loadfunc(char *fname);
 
+	/* defined in noise3.c */
+extern void	setnoisefuncs(void);
+
+	/* defined in fprism.c */
+extern void	setprismfuncs(void);
+
+
+#ifdef __cplusplus
+}
 #endif
+#endif /* _RAD_FUNC_H_ */
+