__init__.py 文件源码

def __init__(self, root, tip, span, sweep=None, sweepangle=45.0):
        self.root = root  #: Root Chord of fin
        self.tip = tip    #: Tip Chord of fin
        self.span = span  #: Span ("height") of fin
        self._length = root

        if sweep is not None:
            self.sweep = sweep  #: Sweep length of the fin
            self.sweepangle = atan(self.sweep / self.span)
            """Angle of sweep of the fin [radians]"""
        else:
            self.sweep = span * tan(radians(sweepangle))
            self.sweepangle = radians(sweepangle)