def METHOD_NAME(edge, number, step, norm):
    """Get the parameters needed in each iteration."""
    parameter = edge.getParameterByLength(number * step)
    v0 = edge.valueAt(parameter)
    tan = edge.tangentAt(parameter).normalize()
    binorm = tan.cross(norm).normalize()
    rot = App.Rotation(binorm, tan, norm)
    return v0, tan, rot