// adds a node to the graph
public void AddNode(GraphNode node)
{
Nodes.Add(node);
if (node.NodeType == GraphNode.Type.Type2)
{
ModelsSet.Add(node);
}
if (node.NodeType == GraphNode.Type.Type1)
{
VariablesSet.Add(node);
}
}
// adds a node to the graph
public void AddNode(string value, GraphNode.Type type) //for bipartite graph
{
var t = new GraphNode(value, type);
Nodes.Add(t);
if (type == GraphNode.Type.Type2)
{
ModelsSet.Add(t);
}
if (type == GraphNode.Type.Type1)
{
VariablesSet.Add(t);
}
}
public bool Remove(string value)
{
// first remove the node from the nodeset
var nodeToRemove = (GraphNode)Nodes.FindByValue(value);
if (nodeToRemove == null)
{
// node wasn't found
return(false);
}
// otherwise, the node was found
Nodes.Remove(nodeToRemove); //removing the node from the node of the graph
if (nodeToRemove.NodeType == GraphNode.Type.Type2) //removing the same node from modeSet if its type is 'model'
{
ModelsSet.Remove(nodeToRemove);
}
if (nodeToRemove.NodeType == GraphNode.Type.Type1)//removing hte same node from varSet if its type is 'variable'
{
VariablesSet.Remove(nodeToRemove);
}
// enumerate through each node in the nodeSet, removing edges to this node
foreach (GraphNode gnode in Nodes)
{//not deleting properly the edges while deleting the node... index is not found properly 27-12-2016...check edge deletion works or not
if (gnode.Neighbors.Remove(nodeToRemove))
{
Edges.Remove(Edges.FindByNodes(gnode, nodeToRemove)); //YHB: nodeToRemove is 'toNode' in the edge whereas 'fromNode' is a node(here gnode) in whos neighbors contains nodeToRemove
}
if (nodeToRemove.Neighbors.Contains(gnode))
{
Edges.Remove(Edges.FindByNodes(nodeToRemove, gnode)); //added on 27-12-2016
}
}
return(true);
}
