selphy_print/pano-split.sh

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#!/bin/bash
###########
# Splits a panorama image into overlapping panels of the correct size.
#
# Note that this is _very_ preliminary, doing the fading/overlapping in a
# very naive linear manner.
infile="$1"
outfile="$2"
model="$3"
printsize="$4"
if [ -z "$5" ] ; then
dpi=300
else
dpi="$5"
fi
# D90
case "${model}" in
mitsubishi-d90dw)
cols=1852
drows=2428
overlap=600
if [ "${printsize}" eq "6x20" ] ; then
inrows=6084
elif [ "${printsize}" eq "6x14" ] ; then
inrows=4256
else
echo "D90 supportx 6x20 and 6x14 only"
exit 1
fi
;;
dnp-ds620)
cols=1844
drows=2436
overlap=600
if [ "${printsize}" eq "6x20" ] ; then
inrows=6108
elif [ "${printsize}" eq "6x14" ] ; then
inrows=4272
else
echo "DS620 supportx 6x20 and 6x14 only"
exit 1
fi
;;
dnp-ds820)
overlap=600
cols=2448
if [ "${printsize}" eq "8x18" ] ; then
drows=3036
inrows=5472
elif [ "${printsize}" eq "8x26" ] ; then
drows=3036
inrows=7908
elif [ "${printsize}" eq "8x22" ] ; then
drows=3636
inrows=6672
elif [ "${printsize}" eq "8x32" ] ; then
drows=3636
inrows=9708
else
echo "DS820 supportx 8x18, 8x26, 8x22, and 8x32 only"
fi
;;
*)
echo "Unsupported model!"
exit 1
;;
esac
# For 600dpi, double everything!
if [ ${dpi} == 600 ] ; then
overlap=`expr ${overlap} * 2`
cols=`expr ${cols} * 2`
drows=`expr ${drows} * 2`
inrows=`expr ${inrows} * 2`
fi
# Calculate page count XXX is this sane?
pages=`expr ${drows} - ${overlap}`
pages=`expr ${inrows} / ${pages}`
# Create gradients
fadeinname=fade_in_${cols}.pgm
fadeoutname=fade_out_${cols}.pgm
gm convert -size ${cols}x${overlap} gradient:white-black ${fadeinname}
gm convert -size ${cols}x${overlap} gradient:black-white ${fadeoutname}
# Generate panels
src_offset=0
panels=''
for panel in `seq 1 ${pages}` ; do
echo "generating $panel / $pages"
panelname=panel_${panel}.ppm
panels="${panels} ${panelname}"
# Generate panel
gm convert ${infile} -crop ${cols}x${drows}+0+${src_offset} ${panelname}
# Increment offset
src_offset=`expr ${src_offset} + ${drows}`;
src_offset=`expr ${src_offset} - ${overlap}`;
# First page fades out only
if [ ${panel} == 1 ] ; then
gm composite -compose screen -gravity south ${fadeoutname} ${panelname} ${panelname}
fi
# Middle pages fade in and out
if [ ${panel} -gt 1 ] ; then
if [ ${panel} -lt ${pages} ] ; then
gm composite -compose screen -gravity south ${fadeoutname} ${panelname} ${panelname}
fi
fi
if [ ${panel} -gt 1 ] ; then
if [ ${panel} -lt ${pages} ] ; then
gm composite -compose screen -gravity north ${fadeinname} ${panelname} ${panelname}
fi
fi
# Last page fades in only
if [ ${panel} == ${pages} ] ; then
gm composite -compose screen -gravity north ${fadeinname} ${panelname} ${panelname}
fi
done
# Clean up templates
rm ${fadeinname} ${fadeoutname}
## Create PDF
gm convert -density ${dpi}x${dpi} ${panels} ${outfile}