--- ray/src/gen/genrev.c	1989/09/10 16:45:14	1.2
+++ ray/src/gen/genrev.c	1990/03/02 17:24:07	1.4
@@ -28,7 +28,7 @@ static char SCCSid[] = "$SunId$ LBL";
 #define  UP		04
 #define  DOWN		010
 
-double  funvalue(), l_hermite(), argument();
+double  funvalue(), l_hermite(), l_bezier(), argument();
 
 
 main(argc, argv)
@@ -45,6 +45,7 @@ char  *argv[];
 
 	varset("PI", PI);
 	funset("hermite", 5, l_hermite);
+	funset("bezier", 5, l_bezier);
 
 	if (argc < 6)
 		goto userror;
@@ -66,7 +67,7 @@ char  *argv[];
 	nseg = atoi(argv[5]);
 	if (nseg <= 0)
 		goto userror;
-	modname = smooth ? "phong" : argv[1];
+	modname = smooth ? "Phong" : argv[1];
 
 	printhead(argc, argv);
 
@@ -98,7 +99,7 @@ char  *argv[];
 		if (!orient)
 			goto endfor;
 		if (smooth) {
-			printf("\n%s texfunc phong\n", argv[1]);
+			printf("\n%s texfunc Phong\n", argv[1]);
 			printf("4 rev_dx rev_dy rev_dz rev.cal\n");
 			printf("0\n4\n");
 			if (orient&(UP|DOWN)) {
@@ -210,4 +211,17 @@ l_hermite()			
 		argument(2)*(-2.0*t+3.0)*t*t +
 		argument(3)*((t-2.0)*t+1.0)*t +
 		argument(4)*(t-1.0)*t*t );
+}
+
+
+double
+l_bezier()
+{
+	double  t;
+
+	t = argument(5);
+	return(	argument(1) * (1.+t*(-3.+t*(3.-t))) +
+		argument(2) * 3.*t*(1.+t*(-2.+t)) +
+		argument(3) * 3.*t*t*(1.-t) +
+		argument(4) * t*t*t );
 }