MKSHELL=rc
path=$PLAN9/bin $path

eps = wmii.eps
calc = rc -c 'hoc -e $"*'

epsbox = `{sed -n '/^%%BoundingBox:/{s/.*://p; q;}' $eps}
iconwidth = 154
iconscale = `{*=$epsbox; $calc $iconwidth / '('$3 - $1')'}
iconheight = `{*=$epsbox; $calc '('$4 - $2') *' $iconscale}

%.png: %.eps
	* = `{hoc -e'-('$epsbox')'}
	x = $1
	y = $2
	gs -q -dBATCH -dNOPAUSE -s'DEVICE=pngalpha' -s'OutputFile='$target -g$iconwidth'x'$iconheight - <<!
		$iconscale $iconscale scale
		$x $y translate
		($eps) run
		showpage
		quit
	!
	optipng -fix $target

%.pdf: %.eps
	sh epstopdf $stem.eps

%-small.png: %.eps
	iconwidth = 16
	iconscale = `{*=$epsbox; hoc -e $iconwidth/'('$3-' '$1')'}
	iconheight = `{*=$epsbox; hoc -e '('$4-' '$2')*'$iconscale}
	* = `{hoc -e'-('$epsbox')'}
	x = $1
	y = $2
	gs -q -dBATCH -dNOPAUSE -s'DEVICE=pngalpha' -s'OutputFile='$target -g$iconwidth'x'$iconheight - <<!
		$iconscale $iconscale scale
		$x $y translate
		($eps) run
		showpage
		quit
	!
	optipng -fix $target