--- ray/src/gen/genrev.c	1989/02/02 11:16:29	1.1
+++ ray/src/gen/genrev.c	1993/11/18 09:33:01	2.3
@@ -1,8 +1,10 @@
-/*
-
 #ifndef lint
 static char SCCSid[] = "$SunId$ LBL";
 #endif
+
+/* Copyright (c) 1989 Regents of the University of California */
+
+/*
  *  genrev.c - program to generate functions of rotation about z
  *
  *	The program takes as input the functions of t for z and r
@@ -13,9 +15,10 @@ static char SCCSid[] = "$SunId$ LBL";
  */
 
 #include  <stdio.h>
+#include  <math.h>
 
-#define  ZNAME		"Z_"			/* z function name */
-#define  RNAME		"R_"			/* r function name */
+#define  ZNAME		"Z`SYS`"		/* z function name */
+#define  RNAME		"R`SYS`"		/* r function name */
 
 #define  PI		3.14159265358979323846
 
@@ -26,13 +29,14 @@ static char SCCSid[] = "$SunId$ LBL";
 #define  UP		04
 #define  DOWN		010
 
-double  funvalue(), l_hermite(), argument();
+double  funvalue(), l_hermite(), l_bezier(), l_bspline(), argument();
 
 
 main(argc, argv)
 int  argc;
 char  *argv[];
 {
+	extern long	eclock;
 	char  stmp[256];
 	char  *modname;
 	int  smooth = 0;
@@ -41,15 +45,17 @@ char  *argv[];
 	int  i, nseg;
 	int  orient;
 
-	varset("PI", PI);
-	funset("hermite", 5, l_hermite);
+	varset("PI", ':', PI);
+	funset("hermite", 5, ':', l_hermite);
+	funset("bezier", 5, ':', l_bezier);
+	funset("bspline", 5, ':', l_bspline);
 
 	if (argc < 6)
 		goto userror;
 
 	for (i = 6; i < argc; i++)
 		if (!strcmp(argv[i], "-e"))
-			scompile(NULL, argv[++i]);
+			scompile(argv[++i], NULL, 0);
 		else if (!strcmp(argv[i], "-f"))
 			fcompile(argv[++i]);
 		else if (!strcmp(argv[i], "-s"))
@@ -58,15 +64,16 @@ char  *argv[];
 			goto userror;
 
 	sprintf(stmp, "%s(t)=%s;", ZNAME, argv[3]);
-	scompile(NULL, stmp);
+	scompile(stmp, NULL, 0);
 	sprintf(stmp, "%s(t)=%s;", RNAME, argv[4]);
-	scompile(NULL, stmp);
+	scompile(stmp, NULL, 0);
 	nseg = atoi(argv[5]);
 	if (nseg <= 0)
 		goto userror;
-	modname = smooth ? "phong" : argv[1];
+	modname = smooth ? "Phong" : argv[1];
 
 	printhead(argc, argv);
+	eclock = 0;
 
 	lastnz = lastnr = 0.0;
 	t = 0.0;
@@ -96,7 +103,7 @@ 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)) {
@@ -154,7 +161,6 @@ userror:
 computen(nzp, nrp, z0, r0, z1, r1)		/* compute normal */
 double  *nzp, *nrp, z0, r0, z1, r1;
 {
-	extern double  sqrt();
 	double  dr, dz, len;
 
 	dz = r0 - r1;				/* right angle vector */
@@ -180,6 +186,7 @@ char  *msg;
 
 
 quit(code)
+int  code;
 {
 	exit(code);
 }
@@ -208,4 +215,30 @@ 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 );
+}
+
+
+double
+l_bspline()
+{
+	double  t;
+
+	t = argument(5);
+	return(	argument(1) * (1./6.+t*(-1./2.+t*(1./2.-1./6.*t))) +
+		argument(2) * (2./3.+t*t*(-1.+1./2.*t)) +
+		argument(3) * (1./6.+t*(1./2.+t*(1./2.-1./2.*t))) +
+		argument(4) * (1./6.*t*t*t) );
 }