--- ray/src/rt/aniso.c	1998/12/16 18:14:57	2.33
+++ ray/src/rt/aniso.c	2003/02/25 02:47:22	2.35
@@ -1,13 +1,12 @@
-/* Copyright (c) 1998 Silicon Graphics, Inc. */
-
 #ifndef lint
-static char SCCSid[] = "$SunId$ SGI";
+static const char	RCSid[] = "$Id: aniso.c,v 2.35 2003/02/25 02:47:22 greg Exp $";
 #endif
-
 /*
  *  Shading functions for anisotropic materials.
  */
 
+#include "copyright.h"
+
 #include  "ray.h"
 
 #include  "otypes.h"
@@ -16,17 +15,10 @@ static char SCCSid[] = "$SunId$ SGI";
 
 #include  "random.h"
 
-extern double  specthresh;		/* specular sampling threshold */
-extern double  specjitter;		/* specular sampling jitter */
-
-extern int  backvis;			/* back faces visible? */
-
 #ifndef  MAXITER
 #define  MAXITER	10		/* maximum # specular ray attempts */
 #endif
 
-static  agaussamp(), getacoords();
-
 /*
  *	This routine implements the anisotropic Gaussian
  *  model described by Ward in Siggraph `92 article.
@@ -68,7 +60,11 @@ typedef struct {
 	double  pdot;		/* perturbed dot product */
 }  ANISODAT;		/* anisotropic material data */
 
+static void	getacoords();
+static void	agaussamp();
 
+
+static void
 diraniso(cval, np, ldir, omega)		/* compute source contribution */
 COLOR  cval;			/* returned coefficient */
 register ANISODAT  *np;		/* material data */
@@ -182,6 +178,7 @@ double  omega;			/* light source size */
 }
 
 
+int
 m_aniso(m, r)			/* shade ray that hit something anisotropic */
 register OBJREC  *m;
 register RAY  *r;
@@ -307,7 +304,7 @@ register RAY  *r;
 }
 
 
-static
+static void
 getacoords(r, np)		/* set up coordinate system */
 RAY  *r;
 register ANISODAT  *np;
@@ -337,7 +334,7 @@ register ANISODAT  *np;
 }
 
 
-static
+static void
 agaussamp(r, np)		/* sample anisotropic gaussian specular */
 RAY  *r;
 register ANISODAT  *np;