Convert signed angle float like -42.42 to int 60000 per degree,
        normalized to positive value.

def convert_to_xml(cls, value):
        """
        Convert signed angle float like -42.42 to int 60000 per degree,
        normalized to positive value.
        """
        # modulo normalizes negative and >360 degree values
        rot = int(round(value * cls.DEGREE_INCREMENTS)) % cls.THREE_SIXTY
        return str(rot)