/// <summary>
/// Рассчитать затраты на проведение данного КПД по одной грани графа.
/// </summary>
/// <param name="project">Свойства проекта.</param>
/// <param name="edge">Грань, вдоль которой проведён данный КПД.</param>
/// <returns>Значение выбранных затрат на проведение КПД.</returns>
public double GetCost(Project project, TopologyEdge edge)
{
try
{
switch (ConnectionType)
{
case ConnectionType.Wired:
return(GetCost(project, 1 + edge.Weights[ConnectionType] / 10));
case ConnectionType.Wireless:
return(0);
case ConnectionType.None:
return(edge.Weights[ConnectionType]);
default:
return(TopologyFitness.UNACCEPTABLE);
}
}
catch (Exception ex)
{
Console.WriteLine("DataChannel GetCost failed! {0}", ex.Message);
return(TopologyFitness.UNACCEPTABLE);
}
}
public void FindClosestElement()
{
using (Geodatabase geodatabase = new Geodatabase(new FileGeodatabaseConnectionPath(new Uri(@"C:\TestData\GrandTeton.gdb"))))
using (Topology topology = geodatabase.OpenDataset <Topology>("Backcountry_Topology"))
{
// Build a topology graph using the extent of the topology dataset.
topology.BuildGraph(topology.GetExtent(), (topologyGraph) =>
{
MapPoint queryPointViaCampsites12 = null;
using (Feature campsites12 = GetFeature(geodatabase, "Campsites", 12))
{
queryPointViaCampsites12 = campsites12.GetShape() as MapPoint;
}
double searchRadius = 1.0;
TopologyElement topologyElementViaCampsites12 = topologyGraph.FindClosestElement <TopologyElement>(queryPointViaCampsites12, searchRadius);
System.Diagnostics.Debug.Assert(topologyElementViaCampsites12 != null, "There should be a topology element corresponding to 'queryPointViaCampsites12' within the 'searchRadius' units.");
IReadOnlyList <FeatureInfo> parentFeatures = topologyElementViaCampsites12.GetParentFeatures();
Console.WriteLine("The parent features that spawn 'topologyElementViaCampsites12' are:");
foreach (FeatureInfo parentFeature in parentFeatures)
{
Console.WriteLine($"\t{parentFeature.FeatureClassName}; OID: {parentFeature.ObjectID}");
}
TopologyNode topologyNodeViaCampsites12 = topologyGraph.FindClosestElement <TopologyNode>(queryPointViaCampsites12, searchRadius);
if (topologyNodeViaCampsites12 != null)
{
// There exists a TopologyNode nearest to the query point within searchRadius units.
}
TopologyEdge topologyEdgeViaCampsites12 = topologyGraph.FindClosestElement <TopologyEdge>(queryPointViaCampsites12, searchRadius);
if (topologyEdgeViaCampsites12 != null)
{
// There exists a TopologyEdge nearest to the query point within searchRadius units.
}
});
}
}