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#! /bin/bash
# A script that compares two runs of test2montage.
#
# Takes two arguments: the prefixes of the first and second series of
# file.
pref1=$1
pref2=$2
nb=0
for f in *.sh; do
base=${f%%.sh}
f1=outputs/${base}${pref1}.png
f2=outputs/${base}${pref2}.png
echo "Comparing $f1 and $f2:"
if [ -r $f1 -a -r $f2 ]; then
if diff <(pngtopnm $f1) <(pngtopnm $f2) > /dev/null; then
echo ' -> identical'
else
echo ' -> different !'
compare $f1 $f2 diff-$base.ppm
convert $f1 diff-$base.ppm $f2 -append a-$base.ppm
display a-$base.ppm &
nb=$(($nb+1))
fi
else
echo " -> impossible as both are not present"
fi
done
echo "Found $nb files that differ"
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