def __init__(self, vnames, name, points):
        """Initialize SplineEdge instance
        vnames is the vertex names in order descrived in
          http://www.openfoam.org/docs/user/mesh-description.php
        # two vertices is needed for Spline
        """
        self.vnames = vnames
        self.name = name
        self.points = points
def __init__ ( self , vnames , name , points ) : self . vnames = vnames self . name = name self . points = points
Initialize SplineEdge instance
        vnames is the vertex names in order descrived in
          http://www.openfoam.org/docs/user/mesh-description.php
        # two vertices is needed for Spline