Tools for generating the Volumetric Regimes book https://volumetricregimes.xyz/ (wiki-to-print, using Paged.js)
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122 lines
3.7 KiB
122 lines
3.7 KiB
#!/bin/bash
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#
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# USAGE:
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# ./color_convert.sh colormodelayer1,colormodelayer2 input_layer1.pdf,input_layer2.pdf output.pdf
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# spot colour colormode should look like "spot-COLOR NAME-0 0.64 0.67 0.02"
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# where COLOR NAME is the name of the colour and 0 0.64 0.67 0.02 are cmyk values from 0 to 1
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DEBUG=1
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DIR=$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )
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function graytospot {
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[ $DEBUG -eq 1 ] && echo "converting : $1 to $2 \n"
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####################################################################
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#part1: let's put our custom color reference in gray_to_spot.ps
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IFS='-' read -a args <<< "$2"
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IFS=' ' read -a color <<< "${args[2]}"
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unset IFS
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#args[1] = color name, args[2] = cmyk equivalent in 1 line
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#color[0] = C, color[1] = M, color[2] = Y, color[3] = K
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spotcolor="\/spotcolor [\/Separation (${args[1]}) \/DeviceCMYK{dup ${color[0]} mul exch dup ${color[1]} mul exch dup ${color[2]} mul exch ${color[3]} mul}] def"
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[ $DEBUG -eq 1 ] && echo "spotcolor : $spotcolor \n"
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sed -i "s/^\/spotcolor.*$/$spotcolor/g" $DIR/gray_to_spot.ps
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#endpart1
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######################################################################
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#part2: convert to ps file using pdftops
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pdftops "$1"
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psfile="${1/.pdf/.ps}"
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######################################################################
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#part3: modify bitmap decode from [0 1] to [1 0] in generated ps
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sed -i -e 's/Decode \[0 1\]/Decode [1 0]/g' "$psfile"
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######################################################################
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#part4: convert back to pdf using gray_to_spot.ps
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gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -sOutputFile="$1" $DIR/gray_to_spot.ps "$psfile"
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######################################################################
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#part5: remove ps file
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[ $DEBUG -eq 0 ] && rm "$psfile"
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}
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IFS=',' read -a layers <<< "$1"
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IFS=',' read -a input_files <<< "$2"
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unset IFS
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if [ $DEBUG -eq 1 ]; then echo "layers : \n"; printf '%s\n' "${layers[@]}"; fi
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if [ $DEBUG -eq 1 ]; then echo "files : \n"; printf '%s\n' "${input_files[@]}"; fi
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#loop on files and convert them according to layers colormodes
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for index in "${!layers[@]}"
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do
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echo "${input_files[index]} ${layers[index]}"
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if [ "${layers[index]}" = "black" ] || [[ "${layers[index]}" == spot* ]]; then
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gs \
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-dNOPAUSE \
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-dBATCH \
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-sDEVICE=pdfwrite \
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-sProcessColorModel=DeviceGray \
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-sColorConversionStrategy=Gray \
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-sDefaultCMYKProfile=ps_cmyk.icc \
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-dOverrideICC \
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-sOutputFile="${input_files[index]/.pdf/-tmp.pdf}" "${input_files[index]}"
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if [[ "${layers[index]}" == spot* ]]; then
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graytospot "${input_files[index]/.pdf/-tmp.pdf}" "${layers[index]}"
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fi
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elif [ "${layers[index]}" = "cmyk" ]; then
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gs \
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-dNOPAUSE \
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-dBATCH \
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-sDEVICE=pdfwrite \
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-dProcessColorModel=/DeviceCMYK \
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-sColorConversionStrategy=CMYK \
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-sDefaultCMYKProfile=ps_cmyk.icc \
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-dOverrideICC \
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-sOutputFile="${input_files[index]/.pdf/-tmp.pdf}" "${input_files[index]}"
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fi
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if [ $DEBUG -eq 0 ]; then
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rm "${input_files[index]}"
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fi
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done
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####IF SINGLE LAYER
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if [ ${#layers[@]} = 1 ]; then
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mv "${input_files[0]/.pdf/-tmp.pdf}" "$3"
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exit
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fi
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####ELSE OVERLAY
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inputFile="${input_files[0]/.pdf/-tmp.pdf}"
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for(( i=1; i < ${#layers[@]}; i++ ))
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do
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pdftk "$inputFile" multistamp "${input_files[i]/.pdf/-tmp.pdf}" output "${3/.pdf/$i.pdf}"
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if [ $DEBUG -eq 0 ]; then
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rm "$inputFile"
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rm "${input_files[i]/.pdf/-tmp.pdf}"
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fi
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inputFile="${3/.pdf/$i.pdf}"
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done
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lastFileN=$(expr ${#layers[@]} - 1)
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mv "${3/.pdf/$lastFileN.pdf}" "$3"
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echo "done"
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exit
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