--- ray/src/px/x11image.c	1992/10/12 16:24:02	2.14
+++ ray/src/px/x11image.c	1993/02/04 21:00:32	2.19
@@ -614,6 +614,13 @@ XKeyPressedEvent  *ekey;
 			make_rpixmap(ourras, wind);
 		redraw(0, 0, width, height);
 		return(0);
+	case '0':				/* recenter origin */
+		if (xoff == 0 & yoff == 0)
+			return(0);
+		xoff = yoff = 0;
+		XClearWindow(thedisplay, wind);
+		redraw(0, 0, width, height);
+		return(0);
 	case ' ':				/* clear */
 		redraw(box.xmin, box.ymin, box.xsiz, box.ysiz);
 		return(0);
@@ -725,7 +732,7 @@ COLOR  clr;
 		return(-1);
 	if (left == ll && right == lr && top == lt && bottom == lb) {
 		copycolor(clr, lc);
-		return;
+		return(0);
 	}
 	for (y = top; y < bottom; y++) {
 		if (getscan(y) == -1)
@@ -754,10 +761,9 @@ getmono()			/* get monochrome data */
 		quiterr("out of memory in getmono");
 	dp = ourdata - 1;
 	for (y = 0; y < ymax; y++) {
-		if (getscan(y) < 0)
-			quiterr("seek error in getmono");
-		normcolrs(scanline, xmax, scale);
+		getscan(y);
 		add2icon(y, scanline);
+		normcolrs(scanline, xmax, scale);
 		err = 0;
 		for (x = 0; x < xmax; x++) {
 			if (!(x&7))
@@ -783,6 +789,7 @@ COLR  *scan;
 	static short  cerr[ICONSIZ];
 	static int  ynext;
 	static char  *dp;
+	COLR  clr;
 	register int  err;
 	register int	x, ti;
 	int  errp;
@@ -813,7 +820,9 @@ COLR  *scan;
 			*++dp = 0;
 		errp = err;
 		ti = x*xmax/iconwidth;
-		err += normbright(scan[ti]) + cerr[x];
+		copycolr(clr, scan[ti]);
+		normcolrs(clr, 1, scale);
+		err += normbright(clr) + cerr[x];
 		if (err > 127)
 			err -= 255;
 		else
@@ -835,12 +844,11 @@ getfull()			/* get full (24-bit) data */
 					/* read and convert file */
 	dp = (unsigned long *)ourdata;
 	for (y = 0; y < ymax; y++) {
-		if (getscan(y) < 0)
-			quiterr("seek error in getfull");
+		getscan(y);
+		add2icon(y, scanline);
 		if (scale)
 			shiftcolrs(scanline, xmax, scale);
 		colrs_gambs(scanline, xmax);
-		add2icon(y, scanline);
 		if (ourras->image->blue_mask & 1)
 			for (x = 0; x < xmax; x++)
 				*dp++ =	scanline[x][RED] << 16 |
@@ -865,23 +873,24 @@ getgrey()			/* get greyscale data */
 					/* read and convert file */
 	dp = ourdata;
 	for (y = 0; y < ymax; y++) {
-		if (getscan(y) < 0)
-			quiterr("seek error in getgrey");
+		getscan(y);
+		add2icon(y, scanline);
 		if (scale)
 			shiftcolrs(scanline, xmax, scale);
+		for (x = 0; x < xmax; x++)
+			scanline[x][GRN] = normbright(scanline[x]);
 		colrs_gambs(scanline, xmax);
-		add2icon(y, scanline);
 		if (maxcolors < 256)
 			for (x = 0; x < xmax; x++)
-				*dp++ =	((long)normbright(scanline[x]) *
-					maxcolors + 128) >> 8;
+				*dp++ =	((long)scanline[x][GRN] *
+					maxcolors + maxcolors/2) >> 8;
 		else
 			for (x = 0; x < xmax; x++)
-				*dp++ =	normbright(scanline[x]);
+				*dp++ =	scanline[x][GRN];
 	}
 	for (x = 0; x < maxcolors; x++)
 		clrtab[x][RED] = clrtab[x][GRN] =
-			clrtab[x][BLU] = ((long)x*256+maxcolors/2)/maxcolors;
+			clrtab[x][BLU] = ((long)x*256 + 128)/maxcolors;
 }
 
 
@@ -895,10 +904,10 @@ getmapped()			/* get color-mapped data */
 	for (y = 0; y < ymax; y++) {
 		if (getscan(y) < 0)
 			quiterr("seek error in getmapped");
+		add2icon(y, scanline);
 		if (scale)
 			shiftcolrs(scanline, xmax, scale);
 		colrs_gambs(scanline, xmax);
-		add2icon(y, scanline);
 		cnt_colrs(scanline, xmax);
 	}
 					/* map pixels */