--- ray/src/gen/mkillum.c	1991/07/25 10:59:05	1.6
+++ ray/src/gen/mkillum.c	1991/07/25 15:31:30	1.9
@@ -15,7 +15,7 @@ static char SCCSid[] = "$SunId$ LBL";
 #include  <ctype.h>
 
 				/* default parameters */
-#define  SAMPDENS	128		/* points per projected steradian */
+#define  SAMPDENS	48		/* points per projected steradian */
 #define  NSAMPS		32		/* samples per point */
 #define  DFLMAT		"illum_mat"	/* material name */
 				/* selection options */
@@ -89,6 +89,7 @@ char	*argv[];
 	rtargv[rtargc] = NULL;
 				/* just asking for defaults? */
 	if (!strcmp(argv[gargc-1], "-defaults")) {
+		printopts(); fflush(stdout);
 		rtpath = getpath(rtargv[0], getenv("PATH"), X_OK);
 		if (rtpath == NULL) {
 			eputs(rtargv[0]);
@@ -268,8 +269,9 @@ char	*nm;
 		case 'e':			/* exclude material */
 			if (cp[1] != '=')
 				break;
-			matselect = (*++cp == 'i') ? S_ELEM : S_COMPL;
-			atos(matcheck, MAXSTR, ++cp);
+			matselect = (*cp == 'i') ? S_ELEM : S_COMPL;
+			cp += 2;
+			atos(matcheck, MAXSTR, cp);
 			cp = sskip(cp);
 			continue;
 		case 'a':			/* use everything */
@@ -340,9 +342,9 @@ char	*nm;
 			doneheader = 0;
 			continue;
 		case '!':			/* processed file! */
-			sprintf(errmsg, "(%s): processed by mkillum already!",
-					nm);
+			sprintf(errmsg, "(%s): already processed!", nm);
 			error(WARNING, errmsg);
+			matselect = S_NONE;
 			return;
 		}
 	opterr:					/* skip faulty option */
@@ -362,6 +364,16 @@ char	*nm;
 	}
 						/* print pure comment */
 	printf("# %s", s+2);
+}
+
+
+printopts()			/* print out option default values */
+{
+	printf("m=%s\t\t\t# material name\n", thisillum.matname);
+	printf("f=%s\t\t\t# data file name\n", thisillum.datafile);
+	printf("c=n\t\t\t\t# color none\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);
 }