#! /bin/sh -x
# +--------+--------+
# |src     |right   |
# +--------+--------+
# |srcmask |rop     |
# +--------+--------+
# |dstmask |err     |
# +--------+--------+
# |  (blank space)  |
# +-----------------+
: ${pref=z}
w=0
h=0
for pic in src srcmask dstmask right rop err
do
	set `sed -n -e 2p -e 2q < $pref.$pic.pbm`
	if [ $1 -gt $w ]; then w=$1; fi
	if [ $2 -gt $h ]; then h=$2; fi
done
bw=6
pbmmake -gray $((($w*2)+($bw*3))) $((($h*4)+($bw*5))) |
  pnmmpaste	$pref.src.pbm $bw $bw				\
		$pref.srcmask.pbm $bw $((($bw*2)+$h))		\
		$pref.dstmask.pbm $bw $((($bw*3)+($h*2))	\
		$pref.right.pbm $((($bw*2)+$w)) $bw		\
		$pref.rop.pbm $((($bw*2)+$w)) $((($bw*2)+$h))	\
		$pref.err.pbm $((($bw*2)+$w)) $((($bw*3)+($h*2)) > $pref.pbm