from mechanism import mechanism

class wheel(mechanism):
    """
    Class represent a filter or mask wheel mechanism, based on the generic
    mechanism class mechanism.  Many added features.
    """
    def __init__(self, cortex, icu_num, axis_num, \
                 base_speed, max_speed, acceleration, deceleration, \
                 position, steps_per_rev, num_positions, \
                 name='mechanism'):
        """
        Initialiser for mechanism class.

        Arguments:
            cortex:       String containing the name of the cortex based
                          ICU daisy chain instance that this mechanism is a
                          part of.
            icuNum:       Which ICU in the chain this mechanism is connected
                          to.
            axisNum:      Which axis of the ICU the mechansism is connected
                          to.
            baseSpeed:    Starting speed (steps/half steps per sec?)
            maxSpeed:     Peak speed (steps/half steps per sec?)
            acceleration: Acceleration (steps/half steps per sec^2?)
            deceleration: Deceleration (steps/half steps per sec^2?)
            position:     Initial position of the mechanism (steps)
            steps_per_rev:Number of motor steps per revolution of the wheel
            num_positions:Number of filters/masks in the wheel
            name:         Label used for logging purposes.
        """