46 lines
847 B
Bash
46 lines
847 B
Bash
#!/bin/sh
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# Crop a set of image files
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#
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# usage:
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#
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# example% batch_crop left top width height image1 image2 etc
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#
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# writes output images crop_image1, crop_image2
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# default prefix
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VIPSHOME=${VIPSHOME-@prefix@}
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name=`basename $0`
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left=$1
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top=$2
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width=$3
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height=$4
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shift 4
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# check args
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if [ $# -lt 1 ]; then
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echo "usage: $name left top width height image1 image2 ..."
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echo
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echo "$name writes a new set of images called crop_image1, "
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echo "crop_image2, etc., each cropped to the specified size"
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exit 1
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fi
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# convert each argument
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for i in $*; do
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dir=`dirname $i`
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file=`basename $i`
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new=$dir/crop_$file
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echo "Cropping $file as $new ..."
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if [ -f $new ]; then
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echo "$new exists, skipping"
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else
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$VIPSHOME/bin/vips im_extract_area $i $new $left $top $width $height
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fi
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done
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