public void SearchBasedHeuristic(object sender, EventArgs e)
{
String locFileName = (String)Session["locationFileName"];
_locationsInfo = _locNodes.getLocationsInfo(_absolutePath + locFileName);
List <LocationInfo> _graphicalNodes = _locationsInfo;
_graphicalNodes = _locNodes.getLocationsInfo(_absolutePath + locFileName);
foreach (RadComboBoxItem excludeNodes in excludeLocationsNodes.Items)
{
if (!(excludeNodes.Checked == false))
{
_graphicalNodes = _graphicalNodes.Where(query => query._node._node != excludeNodes.Text).ToList();
}
}
double totalCostOfTraversal = 0.0;
//convert start and end to location obj
_startNode = _graphicalNodes.FirstOrDefault(query => query._node._node == startLocationsList.SelectedItem.Text);
_endNode = _graphicalNodes.FirstOrDefault(query => query._node._node == endLocationsList.SelectedItem.Text);
String connFileName = (String)Session["connectionFileName"];
_connectionsInfo = _connEdges.getConnectionsInfo(_absolutePath + connFileName, _graphicalNodes);
string locationsNodes = (string)Session["locationNodes"];
string connectionsEdges = (string)Session["connectionEdges"];
//Branch to either shortest distance heuristic based on the search heuristic dropdown
if (selectHeuristicCombo.SelectedItem.Value == shortestDistance)
{
ShortestDistanceSearchAlgorithm aStarSearch = new ShortestDistanceSearchAlgorithm(_startNode, _endNode, _locationsInfo, _connectionsInfo);
List <LocationInfo> resultantArray = aStarSearch.AStarTraversal();
String nodesAndCost = "";
foreach (LocationInfo locationInfo in resultantArray)
{
totalCostOfTraversal += locationInfo._costOfTraversal._g;
nodesAndCost += ("<br>Node:" + locationInfo._node._node + "| Interim Traversal Cost:" + locationInfo._costOfTraversal._g + "| Cumulative Traversal Cost:" + totalCostOfTraversal);
}
String finalOutputNodes = "";
foreach (LocationInfo locationInfo in resultantArray)
{
finalOutputNodes += locationInfo._node._node + ',';
nodesAndCost += ("-" + locationInfo._node._node);
}
finalOutputNodes = finalOutputNodes.TrimEnd(',');
nodesAndCost += ("<br>Total Cost of Travel: " + resultantArray[resultantArray.Count - 1]._costOfTraversal._g);
nodesAndCost = nodesAndCost.TrimStart('-');
path.Text = nodesAndCost;
//Send the output, the locations and connections info so that vis populates the connected graph
ScriptManager.RegisterStartupScript(this, typeof(Page), "GraphParameters", String.Format("populateNodesAndEdges('{0}','{1}','{2}');", finalOutputNodes, locationsNodes, connectionsEdges), true);
}
//Branch to the fewest links heuristic based on the search heuristic dropdown
else if (selectHeuristicCombo.SelectedItem.Value == fewestLinks)
{
FewerLinksSearchAlgorithm aStarSearch = new FewerLinksSearchAlgorithm(_startNode, _endNode, _locationsInfo, _connectionsInfo);
String aStarOutput = "";
String finalOutputNodes = "";
String resultWithMinLinks = aStarSearch.searchByLinks();
resultWithMinLinks = resultWithMinLinks.TrimStart(',');
resultWithMinLinks = resultWithMinLinks.TrimEnd(',');
finalOutputNodes = resultWithMinLinks.TrimEnd(',');
int resultWithLinks = resultWithMinLinks.Count(query => query == ',');
aStarOutput += ("<br>Path Final:" + resultWithMinLinks);
aStarOutput += ("<br>Links travelled:" + resultWithLinks);
path.Text = aStarOutput;
//Send the output, the locations and connections info so that vis populates the connected graph
ScriptManager.RegisterStartupScript(this, typeof(Page), "GraphParameters", String.Format("populateNodesAndEdges('{0}','{1}','{2}');", finalOutputNodes, locationsNodes, connectionsEdges), true);
}
}
public void SearchBasedHeuristic(object sender, EventArgs e)
{
String locFileName = (String)Session["locationFileName"];
_locationsInfo = _locNodes.getLocationsInfo(_absolutePath + locFileName);
List<LocationInfo> _graphicalNodes = _locationsInfo;
_graphicalNodes = _locNodes.getLocationsInfo(_absolutePath + locFileName);
foreach (RadComboBoxItem excludeNodes in excludeLocationsNodes.Items)
{
if (!(excludeNodes.Checked == false))
_graphicalNodes = _graphicalNodes.Where(query => query._node._node != excludeNodes.Text).ToList();
}
double totalCostOfTraversal = 0.0;
//convert start and end to location obj
_startNode = _graphicalNodes.FirstOrDefault(query => query._node._node == startLocationsList.SelectedItem.Text);
_endNode = _graphicalNodes.FirstOrDefault(query => query._node._node == endLocationsList.SelectedItem.Text);
String connFileName = (String)Session["connectionFileName"];
_connectionsInfo = _connEdges.getConnectionsInfo(_absolutePath + connFileName, _graphicalNodes);
string locationsNodes = (string)Session["locationNodes"];
string connectionsEdges = (string)Session["connectionEdges"];
//Branch to either shortest distance heuristic based on the search heuristic dropdown
if (selectHeuristicCombo.SelectedItem.Value == shortestDistance) {
ShortestDistanceSearchAlgorithm aStarSearch = new ShortestDistanceSearchAlgorithm(_startNode, _endNode, _locationsInfo, _connectionsInfo);
List<LocationInfo> resultantArray = aStarSearch.AStarTraversal();
String nodesAndCost = "";
foreach (LocationInfo locationInfo in resultantArray)
{
totalCostOfTraversal += locationInfo._costOfTraversal._g;
nodesAndCost += ("<br>Node:" + locationInfo._node._node + "| Interim Traversal Cost:" + locationInfo._costOfTraversal._g + "| Cumulative Traversal Cost:" + totalCostOfTraversal);
}
String finalOutputNodes = "";
foreach (LocationInfo locationInfo in resultantArray)
{
finalOutputNodes += locationInfo._node._node + ',';
nodesAndCost += ("-" + locationInfo._node._node);
}
finalOutputNodes=finalOutputNodes.TrimEnd(',');
nodesAndCost += ("<br>Total Cost of Travel: " + resultantArray[resultantArray.Count - 1]._costOfTraversal._g);
nodesAndCost = nodesAndCost.TrimStart('-');
path.Text = nodesAndCost;
//Send the output, the locations and connections info so that vis populates the connected graph
ScriptManager.RegisterStartupScript(this, typeof(Page), "GraphParameters", String.Format("populateNodesAndEdges('{0}','{1}','{2}');", finalOutputNodes, locationsNodes, connectionsEdges), true);
}
//Branch to the fewest links heuristic based on the search heuristic dropdown
else if (selectHeuristicCombo.SelectedItem.Value == fewestLinks)
{
FewerLinksSearchAlgorithm aStarSearch = new FewerLinksSearchAlgorithm(_startNode, _endNode, _locationsInfo, _connectionsInfo);
String aStarOutput = "";
String finalOutputNodes = "";
String resultWithMinLinks = aStarSearch.searchByLinks();
resultWithMinLinks = resultWithMinLinks.TrimStart(',');
resultWithMinLinks = resultWithMinLinks.TrimEnd(',');
finalOutputNodes = resultWithMinLinks.TrimEnd(',');
int resultWithLinks = resultWithMinLinks.Count(query => query == ',');
aStarOutput += ("<br>Path Final:" + resultWithMinLinks);
aStarOutput += ("<br>Links travelled:" + resultWithLinks);
path.Text = aStarOutput;
//Send the output, the locations and connections info so that vis populates the connected graph
ScriptManager.RegisterStartupScript(this, typeof(Page), "GraphParameters", String.Format("populateNodesAndEdges('{0}','{1}','{2}');", finalOutputNodes, locationsNodes, connectionsEdges), true);
}
}