def __init__(self,
Sref,
Lref,
database=None,
aeroShape=None,
aOaList=None):
'''
Constructor for a polar.
@param Sref : reference surface
@param Lref : reference length
@param database : the dataBase in which the discrete values are stored, or None
@param aeroShape : the aeroShape from which the polar should be built, or None if the database is already fulfilled
@param aOaList : the angles of attack list on which polar should be built, or None if the database is already fulfilled
'''
DifferentiatedAeroShape.__init__(self, Sref, Lref)
self.__Sref = Sref
self.__Lref = Lref
self.__aeroShape = aeroShape
self.__aOaList = aOaList
self.__ClInterpolator = Kriging()
self.__CdInterpolator = Kriging()
self.__CmInterpolator = Kriging()
if database is not None:
self.__database = database
self.__buildFromDatabase(database)
elif aeroShape is not None and aOaList is not None:
self.__database = Database()
self.__buildFromAeroShape(aOaList, aeroShape)
else:
raise Exception, 'A polar initialization must be done either from a non-Null Database or a non-Null AeroShape and aOaList.'
