# @requires interpolate lab

interpolate_lab = (col1, col2, f, m) ->
	xyz0 = col1.lab()
	xyz1 = col2.lab()
	res = new Color(
	    xyz0[0] + f * (xyz1[0]-xyz0[0]),
	    xyz0[1] + f * (xyz1[1]-xyz0[1]),
	    xyz0[2] + f * (xyz1[2]-xyz0[2]),
	    m
	)

_interpolators.push ['lab', interpolate_lab]