--- ray/src/gen/mkillum.c	2007/12/08 01:43:09	2.32
+++ ray/src/gen/mkillum.c	2009/04/18 16:14:26	2.34
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: mkillum.c,v 2.32 2007/12/08 01:43:09 greg Exp $";
+static const char RCSid[] = "$Id: mkillum.c,v 2.34 2009/04/18 16:14:26 greg Exp $";
 #endif
 /*
  * Make illum sources for optimizing rendering process
@@ -306,7 +306,7 @@ xoptions(			/* process options in string s */
 			}
 			if (!*++cp || isspace(*cp))
 				continue;
-			if (isintd(++cp, " \t\n\r")) {
+			if (isintd(cp, " \t\n\r")) {
 				thisillum.sampdens = atoi(cp);
 			} else {
 				atos(buf, sizeof(buf), cp);
@@ -383,7 +383,7 @@ xoptions(			/* process options in string s */
 				break;
 			case 'z':
 			case 'Z':
-				thisillum.udir = negax ? UDxneg : UDxpos;
+				thisillum.udir = negax ? UDzneg : UDzpos;
 				break;
 			default:
 				thisillum.udir = UDunknown;
@@ -444,8 +444,8 @@ printopts(void)			/* print out option default values *
 		printf("l+\t\t\t\t# light type on\n");
 	else
 		printf("l-\t\t\t\t# light type off\n");
-	printf("d=%d\t\t\t\t# density of points\n", thisillum.sampdens);
-	printf("s=%d\t\t\t\t# samples per point\n", thisillum.nsamps);
+	printf("d=%d\t\t\t\t# density of directions\n", thisillum.sampdens);
+	printf("s=%d\t\t\t\t# samples per direction\n", thisillum.nsamps);
 	printf("b=%f\t\t\t# minimum average brightness\n", thisillum.minbrt);
 	switch (thisillum.udir) {
 	case UDzneg: