--- ray/src/px/x11image.c	1990/08/30 11:21:34	1.7
+++ ray/src/px/x11image.c	1990/10/17 14:56:18	1.9
@@ -336,7 +336,7 @@ getras()				/* get raster file */
 	}
 	return;
 fail:
-	quit("could not create raster image");
+	quiterr("could not create raster image");
 }
 
 
@@ -445,9 +445,10 @@ XKeyPressedEvent  *ekey;
 			XBell(thedisplay, 0);
 			return(-1);
 		}
-		viewray(rorg, rdir, &ourview,
+		if (viewray(rorg, rdir, &ourview,
 				(ekey->x-xoff+.5)/xmax,
-				(ymax-1-ekey->y+yoff+.5)/ymax);
+				(ymax-1-ekey->y+yoff+.5)/ymax) < 0)
+			return(-1);
 		printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
 		printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]);
 		fflush(stdout);
@@ -608,7 +609,7 @@ getmono()			/* get monochrome data */
 
 	if ((inl = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL
 			|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
-		quit("out of memory in getmono");
+		quiterr("out of memory in getmono");
 	dp = ourdata - 1;
 	for (y = 0; y < ymax; y++) {
 		picreadline3(y, inl);
@@ -673,7 +674,7 @@ int  y;
 		if (scanpos == NULL || scanpos[y] == -1)
 			return(-1);
 		if (fseek(fin, scanpos[y], 0) == -1)
-			quit("fseek error");
+			quiterr("fseek error");
 		cury = y;
 	} else if (scanpos != NULL)
 		scanpos[y] = ftell(fin);