def splitEdge(self, edgeToSplit):
upVertex = edgeToSplit.startVertex
downVertex = edgeToSplit.endVertex
midX = (upVertex.x + downVertex.x) / 2
midY = (upVertex.y + downVertex.y) / 2
middleVertex = Vertex(self.getNewVertexId(), midX, midY)
self.addVertex(middleVertex)
iMovs = [(mov.inEdge, mov.numLanes)
for mov in edgeToSplit.iterInMovements()]
eMovs = [(mov.outEdge, mov.numLanes) for
mov in edgeToSplit.iterOutMovements()]
numLanes = edgeToSplit.getNumLanes()
self.deleteEdge(edgeToSplit)
newEdge1 = Edge(upVertex, middleVertex, numLanes)
newEdge2 = Edge(middleVertex, downVertex, numLanes)
self.addEdge(newEdge1)
self.addEdge(newEdge2)
for upEdge, numInLanes in iMovs:
newMovement = Movement(upEdge, newEdge1, numInLanes)
upEdge.addOutMovement(newMovement)
for downEdge, numOutLanes, in eMovs:
newMovement = Movement(newEdge2, downEdge, numOutLanes)
newEdge2.addOutMovement(newMovement)
movement = Movement(newEdge1, newEdge2, numLanes)
newEdge1.addOutMovement(movement)
return newEdge1, newEdge2
