This class visualizes the flow in a directed graph G with animator GA and it's residual network R with animator RA.

flow = FlowWrapper(G,A,R,RA,G.edgeWeights[0],R.edgeWeights[0])

or

flow = FlowWrapper(G,A,R,RA,G.edgeWeights[0],R.edgeWeights[0],G.vertexWeights[0])

__getitem__ ( self,  e )

__init__ (
        self,
        G,
        GA,
        R,
        RA,
        flow,
        res,
        excess=None,
        )

__setitem__ (
        self,
        e,
        val,
        )