async public Task <NetworkTracerOutputCollection> Trace(INetworkFeatureClass network, NetworkTracerInputCollection input, ICancelTracker cancelTraker)
{
if (network == null || !CanTrace(input))
{
return(null);
}
GraphTable gt = new GraphTable(network.GraphTableAdapter());
NetworkSourceInput source = input.Collect(NetworkTracerInputType.SourceNode)[0] as NetworkSourceInput;
NetworkSinkInput sink = input.Collect(NetworkTracerInputType.SinkNode)[0] as NetworkSinkInput;
Dijkstra dijkstra = new Dijkstra(cancelTraker);
dijkstra.reportProgress += this.ReportProgress;
dijkstra.ApplySwitchState = input.Contains(NetworkTracerInputType.IgnoreSwitches) == false &&
network.HasDisabledSwitches;
Dijkstra.ApplyInputIds(dijkstra, input);
// Kürzesten Weg berechenen
if (!dijkstra.Calculate(gt, source.NodeId, sink.NodeId))
{
return(null);
}
Dijkstra.Nodes initialNodes = dijkstra.DijkstraPathNodes(sink.NodeId);
dijkstra = new Dijkstra(initialNodes, cancelTraker);
dijkstra.ForbiddenTargetNodeIds = initialNodes.IdsToList();
for (int i = 1; i < initialNodes.Count - 1; i++)
{
dijkstra.Calculate(gt, initialNodes[i].Id);
}
NetworkTracerOutputCollection output = new NetworkTracerOutputCollection();
NetworkPathOutput pathOutput = new NetworkPathOutput();
Dijkstra.Nodes nodes = dijkstra.DijkstraNodes;
foreach (Dijkstra.Node node in nodes)
{
pathOutput.Add(new NetworkEdgeOutput(node.EId));
}
output.Add(pathOutput);
if (input.Collect(NetworkTracerInputType.AppendNodeFlags).Count > 0)
{
await Helper.AppendNodeFlags(network, gt, Helper.NodeIds(nodes), output);
}
return(output);
}
async public Task <NetworkTracerOutputCollection> Trace(INetworkFeatureClass network, NetworkTracerInputCollection input, gView.Framework.system.ICancelTracker cancelTraker)
{
if (network == null || !CanTrace(input))
{
return(null);
}
GraphTable gt = new GraphTable(network.GraphTableAdapter());
NetworkSourceInput sourceNode = null;
NetworkSourceEdgeInput sourceEdge = null;
if (input.Collect(NetworkTracerInputType.SourceNode).Count == 1)
{
sourceNode = input.Collect(NetworkTracerInputType.SourceNode)[0] as NetworkSourceInput;
}
else if (input.Collect(NetworkTracerInputType.SoruceEdge).Count == 1)
{
sourceEdge = input.Collect(NetworkTracerInputType.SoruceEdge)[0] as NetworkSourceEdgeInput;
}
else
{
return(null);
}
Dijkstra dijkstra = new Dijkstra(cancelTraker);
dijkstra.reportProgress += this.ReportProgress;
dijkstra.ApplySwitchState = input.Contains(NetworkTracerInputType.IgnoreSwitches) == false &&
network.HasDisabledSwitches;
Dijkstra.ApplyInputIds(dijkstra, input);
if (sourceNode != null)
{
dijkstra.Calculate(gt, sourceNode.NodeId);
}
else if (sourceEdge != null)
{
IGraphEdge graphEdge = gt.QueryEdge(sourceEdge.EdgeId);
if (graphEdge == null)
{
return(null);
}
bool n1_2_n2 = gt.QueryN1ToN2(graphEdge.N1, graphEdge.N2) != null;
bool n2_2_n1 = gt.QueryN1ToN2(graphEdge.N2, graphEdge.N1) != null;
bool n1switchState = dijkstra.ApplySwitchState ? gt.SwitchState(graphEdge.N1) : true;
bool n2switchState = dijkstra.ApplySwitchState ? gt.SwitchState(graphEdge.N2) : true;
if (n1_2_n2 && n1switchState == true)
{
dijkstra.Calculate(gt, graphEdge.N1);
}
else if (n2_2_n1 && n2switchState == true)
{
dijkstra.Calculate(gt, graphEdge.N2);
}
else
{
return(null);
}
}
Dijkstra.Nodes dijkstraNodes = dijkstra.DijkstraNodesWithMaxDistance(double.MaxValue);
if (dijkstraNodes == null)
{
return(null);
}
ProgressReport report = (ReportProgress != null ? new ProgressReport() : null);
int counter = 0;
#region Collect Disconnected Nodes
int maxNodeId = network.MaxNodeId;
if (report != null)
{
report.Message = "Collected Disconnected Nodes...";
report.featurePos = 0;
report.featureMax = maxNodeId;
ReportProgress(report);
}
List <int> connectedNodeIds = dijkstraNodes.IdsToList();
connectedNodeIds.Sort();
List <int> disconnectedNodeIds = new List <int>();
for (int id = 1; id <= maxNodeId; id++)
{
counter++;
if (report != null && counter % 1000 == 0)
{
report.featurePos = counter;
ReportProgress(report);
}
if (connectedNodeIds.BinarySearch(id) >= 0)
{
continue;
}
disconnectedNodeIds.Add(id);
}
#endregion
#region Collect EdgedIds
if (report != null)
{
report.Message = "Collected Edges...";
report.featurePos = 0;
report.featureMax = dijkstraNodes.Count;
ReportProgress(report);
}
List <int> edgeIds = new List <int>();
foreach (int id in disconnectedNodeIds)
{
GraphTableRows gtRows = gt.QueryN1(id);
if (gtRows == null)
{
continue;
}
foreach (IGraphTableRow gtRow in gtRows)
{
int index = edgeIds.BinarySearch(gtRow.EID);
if (index < 0)
{
edgeIds.Insert(~index, gtRow.EID);
}
}
counter++;
if (report != null && counter % 1000 == 0)
{
report.featurePos = counter;
ReportProgress(report);
}
}
#endregion
NetworkTracerOutputCollection output = new NetworkTracerOutputCollection();
if (report != null)
{
report.Message = "Add Edges...";
report.featurePos = 0;
report.featureMax = edgeIds.Count;
ReportProgress(report);
}
counter = 0;
NetworkPathOutput pathOutput = new NetworkPathOutput();
foreach (int edgeId in edgeIds)
{
pathOutput.Add(new NetworkEdgeOutput(edgeId));
counter++;
if (report != null && counter % 1000 == 0)
{
report.featurePos = counter;
ReportProgress(report);
}
}
output.Add(pathOutput);
if (input.Collect(NetworkTracerInputType.AppendNodeFlags).Count > 0)
{
await Helper.AppendNodeFlags(network, gt, disconnectedNodeIds, output);
}
return(output);
}