private void PaintConnections(IList<GraphNode> nodeList, PaintState state)
{
int nodeCount = nodeList.Count;
for(int i=0; i<nodeCount; i++)
{
List<GraphConnection> conList = nodeList[i].OutConnectionList;
int conCount = conList.Count;
for(int j=0; j<conCount; j++) {
PaintConnection(conList[j], state);
}
}
}