def check_params(self, u=None, v=None, is_uclosed=False, is_vclosed=False):
"""
Check that the parameter is within the global domain of the knot vector
or is within tolerance of a unique knot value. Use
:class:`.CompareFloats` to compare floats.
:param float u: Global parameter in u-direction.
:param float v: Global parameter in v-direction.
:param bool is_uclosed: Is surface closed in u-direction.
:param bool is_vclosed: Is surface closed in v-direction.
:return: Parameters within global domain. Returns same value if
already within domain. Returns *None* if parameter isn't provided.
:rtype: tuple
"""
if u is not None:
u = check_param(self._n, self._p, self._uk, u, is_uclosed)
if v is not None:
v = check_param(self._m, self._q, self._vk, v, is_vclosed)
return u, v
def check_param(self, u):
"""
Check that the parameter is within the global domain of the knot vector
or is within tolerance of a unique knot value. Use
:class:`.CompareFloats` to compare floats.
:param float u: Global parameter.
:return: Parameter within global domain or near interior knot value.
:rtype: float
"""
return check_param(self._n, self._p, self._uk, u)