#!/bin/zsh
OUTPUT=eDP1

COORD_TRANS_NORMAL=( 1  0  0 
	                 0  1  0
				     0  0  1 )

COORD_TRANS_LEFT=(   0 -1  1 
	                 1  0  0
				     0  0  1 )

COORD_TRANS_RIGHT=(  0  1  0 
	                -1  0  1
				     0  0  1 )

COORD_TRANS_INV=(   -1  0  1 
	                 0 -1  1
				     0  0  1 )

typeset -a mat
case $1 in
	l|left)
		mat=($COORD_TRANS_LEFT)
		rotation=left
		;;
	r|right)
		mat=($COORD_TRANS_RIGHT)
		rotation=right
		;;
	i|inverted)
		mat=($COORD_TRANS_INV)
		rotation=inverted
		;;
	n|normal)
		mat=($COORD_TRANS_NORMAL)
		rotation=normal
		;;
	*)
		echo "Usage: $0 <normal|left|right|inverted>"
		exit 1
		;;
esac

for dev in $(xinput list | grep slave.\*pointer | grep -oP '(?<=id=)\d*'); do
	xinput set-prop $dev 'Coordinate Transformation Matrix' "${mat[@]}"
done
xrandr --output $OUTPUT --rotate $rotation