from cython.cimports.sin_of_square import Function

@cython.cclass
class WaveFunction(Function):

    # Not available in Python-space:
    offset: float

    # Available in Python-space:
    freq = cython.declare(cython.double, visibility='public')

    # Available in Python-space, but only for reading:
    scale = cython.declare(cython.double, visibility='readonly')

    # Available in Python-space:
    @property
    def period(self):
        return 1.0 / self.freq

    @period.setter
    def period(self, value):
        self.freq = 1.0 / value