# Subtexture created from relative coordinates ([0..1]) out of the `root` texture
class RelativeSubtexture
	super Subtexture

	redef var offset_left
	redef var offset_top
	redef var offset_right
	redef var offset_bottom

	redef fun width do return root.width * (offset_right - offset_left)
	redef fun height do return root.height * (offset_bottom - offset_top)
end