nice.sh

#!/bin/bash

################################################################################
#
# Generate nice looking PCB overlays from KiCad PDF plots
# Requirements: Ghostscript and ImageMagick
# 
# Usage:
# 
# chmod a+x ./nice.sh
# ./nice.sh /path/to/kicad/project/folder
#
################################################################################


shopt -s nullglob


if [ -z $1 ]; then
	echo "Using directory" `pwd`
else
	cd $1
	echo "Using directory" $1
fi

for f in *.pdf;
do
	echo "Converting $f to PNG"
	gs -q -r200x200 -dNOPAUSE -dBATCH -sDEVICE=pngalpha -sOutputFile=`basename $f .pdf`.png $f
	
done

for g in *Cu.png; do
	echo "Processing Copper layer file $g"
	convert $g -channel R +level 20%,100% -channel G +level 75%,100% -channel B +level 40%,100% -flatten $g.tmp.png
	mv $g.tmp.png $g

	# get corresponding silkscreen
	TMPNAME=`basename $g .Cu.png`
	LAYER=${TMPNAME:${#TMPNAME}-1:1}
	NAME=${TMPNAME::${#TMPNAME}-2}


	if [ $LAYER = "F" ]; then 
		SSFILE=$NAME"-B.SilkS.png"
		NLAYER="B"
	else
		SSFILE=$NAME"-F.SilkS.png"
		NLAYER="F"
	fi

	if [ -a $SSFILE ]; then
		echo "Using silkscreen file" $SSFILE

		composite $SSFILE $g $NAME-$NLAYER.nice.tmp.png
		convert $NAME-$NLAYER.nice.tmp.png -trim $NAME-$NLAYER.nice.png
		rm $NAME-$NLAYER.nice.tmp.png
		rm $SSFILE
	else
		echo "Silkscreen file" $SSFILE "does not exist"
	fi

	rm $g
	
done

# If there is any schematic plot, let's make a PNG from it
# Will not work without PCB plots because $NAME is determined from PCB plot files
if [ -a $NAME.pdf ]; then
	echo "Processing schematic plot"
  # I don't think this is needed anymore
	# gs -q -r200x200 -dNOPAUSE -dBATCH -sDEVICE=pngalpha -sOutputFile=$NAME.png $NAME.pdf
	convert $NAME.png -flatten -trim $NAME.tmp.png
	mv $NAME.tmp.png $NAME.png
fi

cd `pwd`
echo "Done"