/*
'*********************************************************************************
' Create NASolver and NAContext
'*********************************************************************************
*/
public INAContext CreateSolverContext(INetworkDataset pNetDataset)
{
IDENetworkDataset pDENDS;
pDENDS=GetDENetworkDataset(pNetDataset);
INASolver pNASolver;
INAContextEdit pContextEdit;
//NAClosestFacilitySolver is a network analyst solver to find a set of closest facilities from a set of incidents
pNASolver=new NAClosestFacilitySolver();
pContextEdit=pNASolver.CreateContext(pDENDS,pNASolver.Name) as INAContextEdit;
pContextEdit.Bind(pNetDataset,new GPMessagesClass());
return pContextEdit as INAContext;
}//end of the function CreateSolverContext
private void FormMain_Load(object sender, EventArgs e)
{
Ctrl_Tab.SelectedIndex = 1;
Ctrl_Tab.SelectedIndex = 0;
IFeatureWorkspace pFWorkspace = OpenWorkspace(@"data.gdb") as IFeatureWorkspace;
INetworkDataset networkDataset = OpenNetworkDataset(pFWorkspace as IWorkspace, "rdCenLineDataSet_ND", "rdCenLineDataSet");
m_NAContext = CreateSolverContext(networkDataset);
INetworkLayer pNetworkLayer = new NetworkLayerClass();
pNetworkLayer.NetworkDataset = networkDataset;
ILayer pLayer = pNetworkLayer as ILayer;
pLayer.Name = "NetworkLayer";
Ctrl_Map.AddLayer(pLayer, 0);
IFeatureLayer pJunctionLayer = new FeatureLayerClass();
pJunctionLayer.FeatureClass = pFWorkspace.OpenFeatureClass("rdCenLineDataSet_ND_Junctions");
pJunctionLayer.Name = pJunctionLayer.FeatureClass.AliasName;
Ctrl_Map.AddLayer(pJunctionLayer, 0);
IFeatureLayer pRoadLayer = new FeatureLayerClass();
pRoadLayer.FeatureClass = pFWorkspace.OpenFeatureClass("road_toLine");
pRoadLayer.Name = pRoadLayer.FeatureClass.AliasName;
Ctrl_Map.AddLayer(pRoadLayer, 0);
INALayer pNALayer = m_NAContext.Solver.CreateLayer(m_NAContext);
(pNALayer as ILayer).Name = m_NAContext.Solver.DisplayName;
Ctrl_Map.AddLayer(pNALayer as ILayer, 0);
}
private INALayer CreateRouteAnalysisLayer(string sName, INetworkDataset pNetworkDataset)
{
INARouteSolver solver = new NARouteSolverClass();
INASolverSettings settings = solver as INASolverSettings;
INASolver solver2 = solver as INASolver;
solver.FindBestSequence = true;
solver.PreserveFirstStop = true;
solver.PreserveLastStop = false;
solver.UseTimeWindows = false;
solver.OutputLines = esriNAOutputLineType.esriNAOutputLineTrueShapeWithMeasure;
IStringArray restrictionAttributeNames = settings.RestrictionAttributeNames;
restrictionAttributeNames.Add("Oneway");
settings.RestrictionAttributeNames = restrictionAttributeNames;
IDatasetComponent component = pNetworkDataset as IDatasetComponent;
IDENetworkDataset dataElement = component.DataElement as IDENetworkDataset;
INAContext context = solver2.CreateContext(dataElement, sName);
(context as INAContextEdit).Bind(pNetworkDataset, new GPMessagesClass());
INALayer layer = solver2.CreateLayer(context);
(layer as ILayer).Name = sName;
return(layer);
}
public bool ShowModal(INALayer naLayer)
{
m_okClicked = false;
// Get the NAContext and NetworkDataset
INAContext naContext = naLayer.Context;
INetworkDataset networkDataset = naContext.NetworkDataset;
// Setup the window based on the current NALayer settings
PopulateControls(naLayer);
tabPropPages.SelectedIndex = 1;
this.Text = ((ILayer)naLayer).Name + " Properties";
this.ShowDialog();
if (m_okClicked)
{
// Update the layer properties based on the items chosen
UpdateNALayer(naLayer);
// Update the Context so it can respond to changes made to the solver settings
IGPMessages gpMessages = new GPMessagesClass();
IDENetworkDataset deNetworkDataset = ((IDatasetComponent)networkDataset).DataElement as IDENetworkDataset;
naContext.Solver.UpdateContext(naContext, deNetworkDataset, gpMessages);
}
return(m_okClicked);
}
public static IDENetworkDataset GetPathDENetworkDataset(INetworkDataset networkDataset)
{
IDatasetComponent dsComponent;
dsComponent = networkDataset as IDatasetComponent;
return(dsComponent.DataElement as IDENetworkDataset);
}
/// <summary>
/// Update the CheckedListBox control based on the network dataset attributes (checking the ones currently chosen by the solver)
/// </summary>
private void PopulateAttributeControl(CheckedListBox chklstBox, INetworkDataset networkDataset, IStringArray strArray, esriNetworkAttributeUsageType usageType)
{
chklstBox.Items.Clear();
// Loop through the network dataset attributes
for (int i = 0; i < networkDataset.AttributeCount; i++)
{
INetworkAttribute networkAttribute = networkDataset.get_Attribute(i);
if (networkAttribute.UsageType == usageType)
{
string attributeName = networkAttribute.Name;
CheckState checkState = CheckState.Unchecked;
// If the attribute is in the strArray, it should be checked
for (int j = 0; j < strArray.Count; j++)
{
if (strArray.get_Element(j) == attributeName)
{
checkState = CheckState.Checked;
}
}
// Add the attribute to the control
chklstBox.Items.Add(attributeName, checkState);
}
}
}
/// <summary>
/// 打开网络数据集
/// </summary>
/// <param name="GDBfileName"></param>
/// <param name="featureDatasetName"></param>
/// <param name="sNDSName"></param>
/// <returns></returns>
public static INetworkDataset OpenNetworkDataset(string GDBfileName, string featureDatasetName, string sNDSName)
{
try
{
IWorkspace pWorkspace = OpenWorkspace(GDBfileName);
IFeatureWorkspace pFeatureWorkspace = pWorkspace as IFeatureWorkspace;
if (pFeatureWorkspace == null)
{
return(null);
}
IFeatureDatasetExtensionContainer pFeatureDatasetExtensionContainer = pFeatureWorkspace.OpenFeatureDataset(featureDatasetName) as IFeatureDatasetExtensionContainer;
if (pFeatureDatasetExtensionContainer == null)
{
return(null);
}
IDatasetContainer2 pDatasetContainer2 = pFeatureDatasetExtensionContainer.FindExtension(esriDatasetType.esriDTNetworkDataset) as IDatasetContainer2;
INetworkDataset pNetworkDataset = pDatasetContainer2.get_DatasetByName(esriDatasetType.esriDTAny, sNDSName) as INetworkDataset;
return(pNetworkDataset);
}
catch (Exception ex)
{
Debug.Print(ex.Message);
return(null);
}
}
public static void GetPermittedAttributes(INALayer layer, out string[] impedences, out string[] restrictions,
out string[] hierarchies)
{
ArrayList list = new ArrayList();
ArrayList list2 = new ArrayList();
ArrayList list3 = new ArrayList();
INetworkDataset networkDataset = layer.Context.NetworkDataset;
for (int i = 0; i < networkDataset.AttributeCount; i++)
{
INetworkAttribute attribute = networkDataset.get_Attribute(i);
if (attribute.UsageType == esriNetworkAttributeUsageType.esriNAUTCost)
{
list.Add(attribute.Name);
}
else if (attribute.UsageType == esriNetworkAttributeUsageType.esriNAUTRestriction)
{
list2.Add(attribute.Name);
}
else if (attribute.UsageType == esriNetworkAttributeUsageType.esriNAUTHierarchy)
{
list3.Add(attribute.Name);
}
}
impedences = (string[])list.ToArray(typeof(string));
restrictions = (string[])list2.ToArray(typeof(string));
hierarchies = (string[])list3.ToArray(typeof(string));
}
public void Initialize(INetworkDataset networkDataset, IDENetworkDataset dataElement, INetworkSource source, IEvaluatedNetworkAttribute attribute)
{
// Initialize is called once per session (ArcMap session, ArcCatalog session, etc.) to initialize the evaluator for an associated network dataset
Type t = Type.GetTypeFromProgID("esriFramework.AppRef");
try
{
// Activator.CreateInstance(t) is expected to error if the evaluator is created in an engine application
// which can�t get a reference to the AppRef singleton.
// This evaluator won�t work in Engine due to this design limitation. It is, however,
// fully functional in ArcMap.
System.Object obj = Activator.CreateInstance(t);
IApplication app = obj as IApplication;
if (app != null && app is IMxApplication)
{
m_mxDocument = app.Document as IMxDocument;
}
}
catch (Exception e)
{
m_mxDocument = null;
}
// Store reference to the network dataset and the network source
m_networkDataset = networkDataset;
m_networkSource = source;
// Create a new Dictionary hashtable for this network source
m_sourceHashTable = new Dictionary <int, int>();
}
public static List <string> FindParameterizedSourceNames(INetworkDataset nds, string baseName, VarType vt)
{
List <string> sourceNamesList = new List <string>();
Dictionary <string, int?> sourceNamesDictionary = new Dictionary <string, int?>();
int?dummyValue = null;
int?foundDummyValue = null;
string prefix = GetEIDArrayPrefixFromBaseName(baseName);
INetworkSource netSource;
string sourceName;
string searchParamName;
int count = nds.SourceCount;
for (int i = 0; i < count; ++i)
{
netSource = nds.get_Source(i);
sourceName = netSource.Name;
if (sourceNamesDictionary.TryGetValue(sourceName, out foundDummyValue))
{
continue;
}
searchParamName = GetSourceParameterName(prefix, sourceName);
if (ParameterExists(nds, searchParamName, vt))
{
sourceNamesList.Add(sourceName);
sourceNamesDictionary.Add(sourceName, dummyValue);
}
}
return(sourceNamesList);
}
private void Initialize()
{
this.CheckOutNetworkAnalystExtension();
IFeatureWorkspace workspace =
this.OpenWorkspace(Application.StartupPath + @"\..\..\..\..\Data\NetworkAnalyst") as IFeatureWorkspace;
INetworkDataset pNetDataset = this.OpenNetworkDataset(workspace as IWorkspace, "Streets_nd");
this.m_pNAContext = this.CreateSolverContext(pNetDataset);
for (int i = 0; i < (pNetDataset.AttributeCount - 1); i++)
{
INetworkAttribute attribute = pNetDataset.get_Attribute(i);
if (attribute.UsageType == esriNetworkAttributeUsageType.esriNAUTCost)
{
this.cboCostAttribute.Items.Add(attribute.Name);
this.cboCostAttribute.SelectedIndex = 0;
}
}
this.txtTargetFacility.Text = "1";
this.txtCutOff.Text = "";
IFeatureClass pInputFC = workspace.OpenFeatureClass("BayAreaIncident");
this.LoadNANetworkLocations("Incidents", pInputFC, 100.0);
pInputFC = workspace.OpenFeatureClass("BayAreaLocations");
this.LoadNANetworkLocations("Facilities", pInputFC, 100.0);
INetworkLayer layer2 = new NetworkLayerClass
{
NetworkDataset = pNetDataset
};
ILayer layer = layer2 as ILayer;
layer.Name = "Network Dataset";
layer = this.m_pNAContext.Solver.CreateLayer(this.m_pNAContext) as ILayer;
layer.Name = this.m_pNAContext.Solver.DisplayName;
}
/// <summary>
/// Geodatabase function: get network dataset
/// </summary>
/// <param name="networkDataset">Input network dataset</param>
/// <returns>DE network dataset</returns>
public IDENetworkDataset GetDENetworkDataset(INetworkDataset networkDataset)
{
// Cast from the network dataset to the DatasetComponent
IDatasetComponent dsComponent = networkDataset as IDatasetComponent;
// Get the data element
return(dsComponent.DataElement as IDENetworkDataset);
}
/// <summary>
/// Create the analysis layer, load the locations, solve the analysis, and write to disk
/// </summary>
public void SolveRoute()
{
// Open the feature workspace, input feature class, and network dataset
// As Workspace Factories are Singleton objects, they must be instantiated with the Activator
IWorkspaceFactory workspaceFactory = System.Activator.CreateInstance(System.Type.GetTypeFromProgID("esriDataSourcesGDB.FileGDBWorkspaceFactory")) as IWorkspaceFactory;
IFeatureWorkspace featureWorkspace = workspaceFactory.OpenFromFile(Application.StartupPath + FGDB_WORKSPACE, 0) as IFeatureWorkspace;
IFeatureClass inputStopsFClass = featureWorkspace.OpenFeatureClass(INPUT_STOPS_FC);
// Obtain the dataset container from the workspace
ESRI.ArcGIS.Geodatabase.IFeatureDataset featureDataset = featureWorkspace.OpenFeatureDataset(FEATURE_DATASET);
var featureDatasetExtensionContainer = featureDataset as ESRI.ArcGIS.Geodatabase.IFeatureDatasetExtensionContainer;
ESRI.ArcGIS.Geodatabase.IFeatureDatasetExtension featureDatasetExtension = featureDatasetExtensionContainer.FindExtension(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTNetworkDataset);
var datasetContainer3 = featureDatasetExtension as ESRI.ArcGIS.Geodatabase.IDatasetContainer3;
// Use the container to open the network dataset.
ESRI.ArcGIS.Geodatabase.IDataset dataset = datasetContainer3.get_DatasetByName(ESRI.ArcGIS.Geodatabase.esriDatasetType.esriDTNetworkDataset, NETWORK_DATASET);
INetworkDataset networkDataset = dataset as INetworkDataset;
// Create the Route NALayer
INALayer naLayer = CreateRouteAnalysisLayer("Route", networkDataset);
INAContext naContext = naLayer.Context;
INAClass stopsNAClass = naContext.NAClasses.get_ItemByName("Stops") as INAClass;
IFeatureClass routesFC = naContext.NAClasses.get_ItemByName("Routes") as IFeatureClass;
// Load the Stops
INAClassFieldMap naClassFieldMap = new NAClassFieldMapClass();
naClassFieldMap.set_MappedField("Name", INPUT_NAME_FIELD);
INAClassLoader naLoader = new NAClassLoaderClass();
naLoader.Locator = naContext.Locator;
naLoader.NAClass = stopsNAClass;
naLoader.FieldMap = naClassFieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = naContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(naContext);
int rowsInCursor = 0;
int rowsLocated = 0;
naLoader.Load(inputStopsFClass.Search(new QueryFilterClass(), false) as ICursor, new CancelTrackerClass(), ref rowsInCursor, ref rowsLocated);
//Message all of the network analysis agents that the analysis context has changed
((INAContextEdit)naContext).ContextChanged();
//Solve
INASolver naSolver = naContext.Solver;
naSolver.Solve(naContext, new GPMessagesClass(), new CancelTrackerClass());
//Save the layer to disk
SaveLayerToDisk(naLayer as ILayer, System.Environment.CurrentDirectory + @"\Route.lyr");
}
public void Initialize(INetworkDataset networkDataset, IDENetworkDataset DataElement, INetworkSource netSource, IEvaluatedNetworkAttribute netAttribute)
{
// Initialize is called once per session (ArcMap session, ArcCatalog session, etc.) to initialize the evaluator for an associated network dataset
m_networkDataset = networkDataset;
m_networkSource = netSource;
m_networkAttribute = netAttribute;
Refresh();
}
public static IDENetworkDataset GetPathDENetworkDataset(INetworkDataset networkDataset)
{
//The IDatasetComponent interface is used to access the data element and parent dataset of this dataset.
IDatasetComponent dsComponent;
dsComponent = networkDataset as IDatasetComponent;
//The data element corresponding to the dataset component.DataElement attribute returns a parameter type IDEDataset.
return(dsComponent.DataElement as IDENetworkDataset);
}
/// <summary>
/// 根据网络数据集创建网络分析上下文
/// </summary>
/// <param name="networkDataset"></param>
/// <returns></returns>
private static INAContext CreateNAContext(INetworkDataset networkDataset)
{
IDENetworkDataset pDENetworkDataset = GetDENetworkDataset(networkDataset);
INASolver pNASolver = new NARouteSolverClass();
INAContextEdit pNAContextEdit = pNASolver.CreateContext(pDENetworkDataset, pNASolver.Name) as INAContextEdit;
pNAContextEdit.Bind(networkDataset, new GPMessagesClass());
return(pNAContextEdit as INAContext);
}
private INAContext CreateSolverContext(INetworkDataset networkDataset)
{
IDENetworkDataset dENetworkDataset = GetDENetworkDataset(networkDataset);
INASolver nASolver = new NARouteSolver();
INAContextEdit nAContextEdit = nASolver.CreateContext(dENetworkDataset, nASolver.Name) as INAContextEdit;
nAContextEdit.Bind(networkDataset, null);
return(nAContextEdit as INAContext);
}
/// <summary>
/// 得到创建网络分析上下文所需的IDENETWORKDATASET类型参数
/// </summary>
public IDENetworkDataset GetDENetworkDataset(INetworkDataset networkDataset)
{
//将网络分析数据集QI添加到DATASETCOMPOENT
IDatasetComponent dstComponent;
dstComponent = networkDataset as IDatasetComponent;
//获得数据元素
return(dstComponent.DataElement as IDENetworkDataset);
}
public INAContext CreateSolverContext(INetworkDataset pNetDataset)
{
IDENetworkDataset dENetworkDataset = this.GetDENetworkDataset(pNetDataset);
INASolver solver = new NAClosestFacilitySolverClass();
INAContextEdit edit = solver.CreateContext(dENetworkDataset, solver.Name) as INAContextEdit;
edit.Bind(pNetDataset, new GPMessagesClass());
return(edit as INAContext);
}
public NetworkTurns(string turnClassName, IDataset osmDataset, INetworkDataset nds)
{
_turnClassName = turnClassName;
_osmDataset = osmDataset;
_networkDataset = nds;
IGPUtilities gpUtil = new GPUtilitiesClass();
IDataElement de = gpUtil.MakeDataElementFromNameObject(osmDataset.FullName);
_dsPath = de.CatalogPath;
}
}//end of the function CreateSolverContext
//DENetworkDataset is a light weight object that holds information about a network dataset
public IDENetworkDataset GetDENetworkDataset(INetworkDataset pNetDataset)
{
IDatasetComponent pDSComponent;
pDSComponent=pNetDataset as IDatasetComponent;
return pDSComponent.DataElement as IDENetworkDataset;
}
/// <summary>
/// Create a layer for the network dataset and add it to the map
/// </summary>
private void AddNetworkDatasetLayerToMap(INetworkDataset networkDataset)
{
INetworkLayer networkLayer = new NetworkLayerClass();
networkLayer.NetworkDataset = networkDataset;
ILayer layer = networkLayer as ILayer;
layer.Name = "Network Dataset";
axMapControl.AddLayer(layer);
}
/// <summary>
/// Initialize the solver by calling the ArcGIS Network Analyst extension functions.
/// </summary>
private void Initialize()
{
IFeatureWorkspace featureWorkspace = null;
INetworkDataset networkDataset = null;
try
{
// Open the Network Dataset
IWorkspace workspace = OpenWorkspace(System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), @"ArcGIS\data\SanFrancisco\SanFrancisco.gdb"));
networkDataset = OpenNetworkDataset(workspace, "Transportation", "Streets_ND");
featureWorkspace = workspace as IFeatureWorkspace;
}
catch (Exception ex)
{
System.Windows.Forms.MessageBox.Show("Unable to open dataset. Error Message: " + ex.Message);
this.Close();
return;
}
// Create NAContext and NASolver
m_NAContext = CreateSolverContext(networkDataset);
// Get available cost attributes from the network dataset
INetworkAttribute networkAttribute;
for (int i = 0; i < networkDataset.AttributeCount - 1; i++)
{
networkAttribute = networkDataset.get_Attribute(i);
if (networkAttribute.UsageType == esriNetworkAttributeUsageType.esriNAUTCost)
{
comboCostAttribute.Items.Add(networkAttribute.Name);
}
}
comboCostAttribute.SelectedIndex = 0;
textTargetFacility.Text = "";
textCutoff.Text = "";
// Load locations from feature class
IFeatureClass inputFClass = featureWorkspace.OpenFeatureClass("Stores");
LoadNANetworkLocations("Origins", inputFClass, 100);
inputFClass = featureWorkspace.OpenFeatureClass("Hospitals");
LoadNANetworkLocations("Destinations", inputFClass, 5100);
// Create layer for network dataset and add to ArcMap
INetworkLayer networkLayer = new NetworkLayerClass();
networkLayer.NetworkDataset = networkDataset;
var layer = networkLayer as ILayer;
layer.Name = "Network Dataset";
axMapControl.AddLayer(layer, 0);
// Create a network analysis layer and add to ArcMap
INALayer naLayer = m_NAContext.Solver.CreateLayer(m_NAContext);
layer = naLayer as ILayer;
layer.Name = m_NAContext.Solver.DisplayName;
axMapControl.AddLayer(layer, 0);
}
/// <summary>
/// Create NASolver and NAContext
/// </summary>
/// <param name="networkDataset">Input network dataset</param>
/// <returns>NAContext</returns>
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//Get the data element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver = new NAODCostMatrixSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
//Bind a context using the network dataset
contextEdit.Bind(networkDataset, new GPMessagesClass());
return contextEdit as INAContext;
}
public NetworkTurns(string turnClassName, IDataset osmDataset, INetworkDataset nds)
{
_turnClassName = turnClassName;
_osmDataset = osmDataset;
_networkDataset = nds;
IGPUtilities gpUtil = new GPUtilitiesClass();
IDataElement de = gpUtil.MakeDataElementFromNameObject(osmDataset.FullName);
_dsPath = de.CatalogPath;
}
public void SolveRoute()
{
IWorkspaceFactory factory = new ShapefileWorkspaceFactoryClass();
this.m_pWorkspace = factory.OpenFromFile(this.SHAPE_WORKSPACE, 0);
this.SetMemberVariables();
this.Solve();
this.m_pWorkspace = null;
this.m_pNetworkDataset = null;
this.m_pInputStopsFClass = null;
}
//*********************************************************************************
// ArcGIS Network Analyst extension functions
// ********************************************************************************
//*********************************************************************************
// Create NASolver and NAContext
//*********************************************************************************
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//Get the Data Element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver = new NALocationAllocationSolverClass();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return(contextEdit as INAContext);
}
//创建网络分析上下文
public static INAContext CreatePathSolverContext(INetworkDataset networkDataset)
{
IDENetworkDataset deNDS = GetPathDENetworkDataset(networkDataset);
INASolver naSolver;
naSolver = new NARouteSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return(contextEdit as INAContext);
}
/// <summary>Creates an new (unbuilt) Network Dataset</summary>
private void CreateBuildableNDS()
{
IDENetworkDataset2 deNetworkDataset = new DENetworkDatasetClass();
deNetworkDataset.Buildable = true;
((IDataElement)deNetworkDataset).Name = _ndsName;
// Copy the feature dataset's extent and spatial reference to the network dataset
IDEGeoDataset deGeoDataset = (IDEGeoDataset)deNetworkDataset;
deGeoDataset.Extent = _extent;
deGeoDataset.SpatialReference = _spatialReference;
deNetworkDataset.ElevationModel = esriNetworkElevationModel.esriNEMNone;
deNetworkDataset.SupportsTurns = true;
// General Network Directions
GeneralNetworkDirectionInfo dirInfo = _xml.GeneralNetworkDirections();
if (dirInfo != null)
{
INetworkDirections netdir = new NetworkDirectionsClass();
netdir.LengthAttributeName = dirInfo.LengthAttr;
netdir.DefaultOutputLengthUnits = dirInfo.LengthUnits;
netdir.RoadClassAttributeName = dirInfo.RoadClassAttr;
netdir.TimeAttributeName = dirInfo.TimeAttr;
deNetworkDataset.Directions = netdir;
}
IArray sources = new ArrayClass();
foreach (INetworkSource ns in EnumerateNetworkSources())
{
sources.Add(ns);
}
IArray attrs = new ArrayClass();
foreach (var na in _networkAttrs)
{
attrs.Add(na);
}
deNetworkDataset.Sources = sources;
deNetworkDataset.Attributes = attrs;
// Get the feature dataset extension and create the network dataset from the data element.
IFeatureDatasetExtension fdExtension = ((IFeatureDatasetExtensionContainer)_osmDataset).FindExtension(esriDatasetType.esriDTNetworkDataset);
_networkDataset = (INetworkDataset)((IDatasetContainer2)fdExtension).CreateDataset((IDEDataset)deNetworkDataset);
}
/// <summary>
/// 创建网络分析上下文
/// </summary>
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//获取创建网络分析上下文所需的IDENETWORKDATASET类型参数
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver;
naSolver = new NARouteSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return(contextEdit as INAContext);
}
//创建网络分析上下文
public static INAContext CreatePathSolverContext(INetworkDataset networkDataset)
{
IDENetworkDataset deNDS = GetPathDENetworkDataset(networkDataset);
INASolver naSolver;
naSolver = new NARouteSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.DisplayName) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());//将网络数据集与网络上下文对象绑定在一起
//GPMessagesClass对象用于记录错误信息。
return(contextEdit as INAContext);
}
public INAContext CreateRouteSolverContext(INetworkDataset pNetDataset)
{
INAContextEdit pContextEdit;
IDENetworkDataset pDENDS= GetDENetworkDataset(pNetDataset);
INASolver pNASolver=(new NARouteSolverClass()) as INASolver;
pContextEdit = pNASolver.CreateContext(pDENDS, "Route") as INAContextEdit;
pContextEdit.Bind(pNetDataset,new GPMessagesClass());
return pContextEdit as INAContext;
}
/*
'*********************************************************************************
' Create NASolver and NAContext
'*********************************************************************************
*/
public INAContext CreateSolverContext(INetworkDataset pNetDataset)
{
IDENetworkDataset pDENDS;
pDENDS=GetDENetworkDataset(pNetDataset);
INASolver pNASolver;
INAContextEdit pContextEdit;
//NAClosestFacilitySolver is a network analyst solver to find a set of closest facilities from a set of incidents
pNASolver=new NAClosestFacilitySolver();
pContextEdit=pNASolver.CreateContext(pDENDS,pNASolver.Name) as INAContextEdit;
pContextEdit.Bind(pNetDataset,new GPMessagesClass());
return pContextEdit as INAContext;
}
/// <summary>Creates an new (unbuilt) Network Dataset</summary>
private void CreateBuildableNDS()
{
IDENetworkDataset2 deNetworkDataset = new DENetworkDatasetClass();
deNetworkDataset.Buildable = true;
((IDataElement)deNetworkDataset).Name = _ndsName;
// Copy the feature dataset's extent and spatial reference to the network dataset
IDEGeoDataset deGeoDataset = (IDEGeoDataset)deNetworkDataset;
deGeoDataset.Extent = _extent;
deGeoDataset.SpatialReference = _spatialReference;
deNetworkDataset.ElevationModel = esriNetworkElevationModel.esriNEMNone;
deNetworkDataset.SupportsTurns = true;
// General Network Directions
GeneralNetworkDirectionInfo dirInfo = _xml.GeneralNetworkDirections();
if (dirInfo != null)
{
INetworkDirections netdir = new NetworkDirectionsClass();
netdir.LengthAttributeName = dirInfo.LengthAttr;
netdir.DefaultOutputLengthUnits = dirInfo.LengthUnits;
netdir.RoadClassAttributeName = dirInfo.RoadClassAttr;
netdir.TimeAttributeName = dirInfo.TimeAttr;
deNetworkDataset.Directions = netdir;
}
IArray sources = new ArrayClass();
foreach (INetworkSource ns in EnumerateNetworkSources())
sources.Add(ns);
IArray attrs = new ArrayClass();
foreach (var na in _networkAttrs)
attrs.Add(na);
deNetworkDataset.Sources = sources;
deNetworkDataset.Attributes = attrs;
// Get the feature dataset extension and create the network dataset from the data element.
IFeatureDatasetExtension fdExtension = ((IFeatureDatasetExtensionContainer)_osmDataset).FindExtension(esriDatasetType.esriDTNetworkDataset);
_networkDataset = (INetworkDataset)((IDatasetContainer2)fdExtension).CreateDataset((IDEDataset)deNetworkDataset);
}
/// <summary>
/// Create a layer for the network dataset and add it to the map
/// </summary>
private void AddNetworkDatasetLayerToMap(INetworkDataset networkDataset)
{
INetworkLayer networkLayer = new NetworkLayerClass();
networkLayer.NetworkDataset = networkDataset;
ILayer layer = networkLayer as ILayer;
layer.Name = "Network Dataset";
axMapControl.AddLayer(layer);
}
/// <summary>
/// Find and load the cost attributes into a combo box
/// <summary>
private void LoadCostAttributes(INetworkDataset networkDataset)
{
cbCostAttribute.Items.Clear();
int attrCount = networkDataset.AttributeCount;
for (int attrIndex = 0; attrIndex < attrCount; attrIndex++)
{
INetworkAttribute networkAttribute = networkDataset.get_Attribute(attrIndex);
if (networkAttribute.UsageType == esriNetworkAttributeUsageType.esriNAUTCost)
cbCostAttribute.Items.Add(networkAttribute.Name);
}
if (cbCostAttribute.Items.Count > 0)
cbCostAttribute.SelectedIndex = 0;
}
/// <summary>
/// Create NASolver and NAContext
/// </summary>
/// <param name="networkDataset">Input network dataset</param>
private void CreateSolverContext(INetworkDataset networkDataset)
{
if (networkDataset == null) return;
//Get the Data Element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver = new NAServiceAreaSolverClass();
m_NAContext = naSolver.CreateContext(deNDS, naSolver.Name);
((INAContextEdit)m_NAContext).Bind(networkDataset, new GPMessagesClass());
}
/// <summary>
/// Create NASolver and NAContext
/// </summary>
/// <param name="networkDataset">Input network dataset</param>
/// <returns>NAContext</returns>
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//Get the data element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver = new NAODCostMatrixSolver();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
//Bind a context using the network dataset
contextEdit.Bind(networkDataset, new GPMessagesClass());
return contextEdit as INAContext;
}
private INAContext CreateNAContext(INetworkDataset networkDataset)
{
IDENetworkDataset pDENetworkDataset = GetDENetworkDataset(networkDataset);
INASolver pNASolver = new NARouteSolverClass();
INAContextEdit pNAContextEdit = pNASolver.CreateContext(pDENetworkDataset, pNASolver.Name) as INAContextEdit;
pNAContextEdit.Bind(networkDataset, new GPMessagesClass());
return pNAContextEdit as INAContext;
}
private void Form1_Load(object sender, EventArgs e)
{
j = 3;
comboBox1.Items.Clear();
string filePath = Application.StartupPath + "\\..\\..\\..\\..\\最新arcsense\\无标题11.sxd";
if (axSceneControl1.CheckSxFile(filePath))
{
axSceneControl1.LoadSxFile(filePath);
axTOCControl1.SetBuddyControl(axSceneControl1);
}
lyrCount = axSceneControl1.Scene.LayerCount;
//MessageBox.Show(axSceneControl1.Scene.LayerCount.ToString());
for (i = 0; i <= lyrCount - 1; i++)
{
// MessageBox.Show(axSceneControl1.Scene.get_Layer(i).Name);
comboBox1.Items.Add(axSceneControl1.Scene.get_Layer(i).Name);
}
String sFilename;
sFilename = @"C:\Users\dull\Desktop\新文件\校园代码\最新底图制作\无标题.mxd";
if (axMapControl1.CheckMxFile(sFilename))
{
axMapControl1.LoadMxFile(sFilename);
// axTOCControl1.SetBuddyControl(axMapControl1);
}
string path = System.AppDomain.CurrentDomain.SetupInformation.ApplicationBase;
int t;
for (t = 0; t < path.Length; t++)
{
if (path.Substring(t, 24) == "WindowsFormsApplication1")
{
break;
}
}
string name = path.Substring(0, t - 1) + "\\WindowsFormsApplication1\\road.gdb";
pFeatureWorkspace = OpenWorkspace(name) as IFeatureWorkspace;
pNetworkDataset = OpenNetworkDataset_Other(pFeatureWorkspace as IWorkspace, "zhz_ND", "zhz");
pNAContext = CreateNAContext(pNetworkDataset);
pInputFC = pFeatureWorkspace.OpenFeatureClass("zhz_ND_Junctions");
//pInputFC = pFeatureWorkspace.OpenFeatureClass("woqu");
pVertexFC = pFeatureWorkspace.OpenFeatureClass("zhz_ND_Junctions");
IFeatureLayer pVertexFL = new FeatureLayerClass();
pVertexFL.FeatureClass = pFeatureWorkspace.OpenFeatureClass("zhz_ND_Junctions");
pVertexFL.Name = pVertexFL.FeatureClass.AliasName;
axMapControl2.AddLayer(pVertexFL, 0);
IFeatureLayer pRoadFL = new FeatureLayerClass();
pRoadFL.FeatureClass = pFeatureWorkspace.OpenFeatureClass("road1");
pRoadFL.Name = pRoadFL.FeatureClass.AliasName;
axMapControl2.AddLayer(pRoadFL, 0);
ILayer pLayer;
INetworkLayer pNetworkLayer = new NetworkLayerClass();
pNetworkLayer.NetworkDataset = pNetworkDataset;
pLayer = pNetworkLayer as ILayer;
pLayer.Name = "Network Dataset";
axMapControl2.AddLayer(pLayer, 0);
//Create a Network Analysis Layer and add to ArcMap
INALayer naLayer = pNAContext.Solver.CreateLayer(pNAContext);
pLayer = naLayer as ILayer;
pLayer.Name = pNAContext.Solver.DisplayName;
axMapControl2.AddLayer(pLayer, 0);
pActiveView = axMapControl2.ActiveView;
pMap = pActiveView.FocusMap;
pGraphicsContainer = pMap as IGraphicsContainer;
// string CurrentPath = Directory.GetCurrentDirectory();
// Directory.SetCurrentDirectory(CurrentPath + "\\..\\..\\..\\..\\最新底图制作");
// string FilePath = Directory.GetCurrentDirectory();
// axMapControl1.AddShapeFile(FilePath, "教学区.shp");
// axMapControl1.AddShapeFile(FilePath, "活动区.shp");
// axMapControl1.AddShapeFile(FilePath, "宿舍.shp");
// axMapControl1.AddShapeFile(FilePath, "场馆区.shp");
// axMapControl1.AddShapeFile(FilePath, "办公区.shp");
// axMapControl1.AddShapeFile(FilePath, "其他.shp");
// axMapControl1.AddShapeFile(FilePath, "底图.shp");
// axMapControl1.AddShapeFile(FilePath, "无标题.mxd");
}
/// <summary>
/// 获取网络分析上下文，这个接口是网络分析中很重要的一个
/// </summary>
/// <param name="_pNaSolver"></param>
/// <param name="_pNetworkDataset"></param>
/// <returns></returns>
public INAContext GetSolverContext(INASolver _pNaSolver, INetworkDataset _pNetworkDataset)
{
//Get the Data Element
IDatasetComponent pDataComponent = _pNetworkDataset as IDatasetComponent;
IDEDataset pDeDataset = pDataComponent.DataElement;
INAContextEdit pContextEdit = _pNaSolver.CreateContext(pDeDataset as IDENetworkDataset, _pNaSolver.Name) as INAContextEdit;
//Prepare the context for analysis based upon the current network dataset schema.
pContextEdit.Bind(_pNetworkDataset, new GPMessagesClass());
return pContextEdit as INAContext;
}
/// <summary>
/// 加载NetworkDataset到Map中
/// </summary>
/// <param name="_pMap"></param>
/// <param name="_pNetworkDataset"></param>
void loadNet(IMap _pMap,INetworkDataset _pNetworkDataset)
{
INetworkLayer pNetLayer = new NetworkLayerClass();
pNetLayer.NetworkDataset = _pNetworkDataset;
_pMap.AddLayer(pNetLayer as ILayer);
}
public static bool ParameterExists(INetworkDataset nds, string searchName, VarType vt)
{
bool found = false;
INetworkAttribute2 netAttribute;
IArray netParams;
INetworkAttributeParameter netParam;
int cAttributes = nds.AttributeCount;
for (int a = 0; a < cAttributes; ++a)
{
netAttribute = nds.get_Attribute(a) as INetworkAttribute2;
netParams = null;
int cParams = 0;
if (netAttribute != null)
netParams = netAttribute.Parameters;
if (netParams != null)
cParams = netParams.Count;
string compareName;
for (int p = 0; p < cParams; ++p)
{
netParam = netParams.get_Element(p) as INetworkAttributeParameter;
compareName = netParam.Name;
if (String.Compare(searchName, compareName, true) == 0)
{
found = true;
break;
}
}
if (found)
break;
}
return found;
}
public static List<string> FindParameterizedSourceNames(INetworkDataset nds, string baseName, VarType vt)
{
List<string> sourceNamesList = new List<string>();
Dictionary<string, int?> sourceNamesDictionary = new Dictionary<string, int?>();
int? dummyValue = null;
int? foundDummyValue = null;
string prefix = GetEIDArrayPrefixFromBaseName(baseName);
INetworkSource netSource;
string sourceName;
string searchParamName;
int count = nds.SourceCount;
for (int i = 0; i < count; ++i)
{
netSource = nds.get_Source(i);
sourceName = netSource.Name;
if (sourceNamesDictionary.TryGetValue(sourceName, out foundDummyValue))
continue;
searchParamName = GetSourceParameterName(prefix, sourceName);
if (ParameterExists(nds, searchParamName, vt))
{
sourceNamesList.Add(sourceName);
sourceNamesDictionary.Add(sourceName, dummyValue);
}
}
return sourceNamesList;
}
/// <summary>IDisposable - dispose of open assets</summary>
public void Dispose()
{
_xml = null;
_osmDataset = null;
_messages = null;
_trackCancel = null;
if (_edgeSources != null)
{
foreach (var efs in _edgeSources)
ComReleaser.ReleaseCOMObject(efs);
_edgeSources.Clear();
_edgeSources = null;
}
if (_junctionSources != null)
{
foreach (var jfs in _junctionSources)
ComReleaser.ReleaseCOMObject(jfs);
_junctionSources.Clear();
_junctionSources = null;
}
ComReleaser.ReleaseCOMObject(_turnSource);
_turnSource = null;
if (_networkAttrs != null)
{
foreach (var na in _networkAttrs)
ComReleaser.ReleaseCOMObject(na);
_networkAttrs.Clear();
_networkAttrs = null;
}
ComReleaser.ReleaseCOMObject(_networkDataset);
_networkDataset = null;
}
public IDENetworkDataset GetDENetworkDataset(INetworkDataset networkDataset)
{
// Cast from the Network Dataset to the DatasetComponent
IDatasetComponent dsComponent = networkDataset as IDatasetComponent;
// Get the Data Element
return dsComponent.DataElement as IDENetworkDataset;
}
public void Initialize(INetworkDataset networkDataset, IDENetworkDataset DataElement, INetworkSource netSource, IEvaluatedNetworkAttribute netAttribute)
{
// Initialize is called once per session (ArcMap session, ArcCatalog session, etc.) to initialize the evaluator for an associated network dataset
m_networkDataset = networkDataset;
m_networkSource = netSource;
m_networkAttribute = netAttribute;
Refresh();
}
public void Initialize(INetworkDataset networkDataset, IDENetworkDataset dataElement, INetworkSource source, IEvaluatedNetworkAttribute attribute)
{
// Initialize is called once per session (ArcMap session, ArcCatalog session, etc.) to initialize the evaluator for an associated network dataset
Type t = Type.GetTypeFromProgID("esriFramework.AppRef");
try
{
// Activator.CreateInstance(t) is expected to error if the evaluator is created in an engine application
// which can�t get a reference to the AppRef singleton.
// This evaluator won�t work in Engine due to this design limitation. It is, however,
// fully functional in ArcMap.
System.Object obj = Activator.CreateInstance(t);
IApplication app = obj as IApplication;
if (app != null && app is IMxApplication)
m_mxDocument = app.Document as IMxDocument;
}
catch (Exception e)
{
m_mxDocument = null;
}
// Store reference to the network dataset and the network source
m_networkDataset = networkDataset;
m_networkSource = source;
// Create a new Dictionary hashtable for this network source
m_sourceHashTable = new Dictionary<int, int>();
}
//DENetworkDataset is a light weight object that holds information about a network dataset
public IDENetworkDataset GetDENetworkDataset(INetworkDataset pNetDataset)
{
IDatasetComponent pDSComponent;
pDSComponent=pNetDataset as IDatasetComponent;
return pDSComponent.DataElement as IDENetworkDataset;
}
/// <summary>
/// Create a new network analysis layer and set some solver settings
/// </summary>
private INALayer CreateRouteAnalysisLayer(String layerName, INetworkDataset networkDataset)
{
INARouteSolver naRouteSolver = new NARouteSolverClass();
INASolverSettings naSolverSettings = naRouteSolver as INASolverSettings;
INASolver naSolver = naRouteSolver as INASolver;
//Get the NetworkDataset's Data Element
IDatasetComponent datasetComponent = networkDataset as IDatasetComponent;
IDENetworkDataset deNetworkDataset = datasetComponent.DataElement as IDENetworkDataset;
//Create the NAContext and bind to it
INAContext naContext;
naContext = naSolver.CreateContext(deNetworkDataset, layerName);
INAContextEdit naContextEdit = naContext as INAContextEdit;
naContextEdit.Bind(networkDataset, new GPMessagesClass());
//Create the NALayer
INALayer naLayer;
naLayer = naSolver.CreateLayer(naContext);
(naLayer as ILayer).Name = layerName;
//Set properties on the route solver interface
naRouteSolver.FindBestSequence = true;
naRouteSolver.PreserveFirstStop = true;
naRouteSolver.PreserveLastStop = false;
naRouteSolver.UseTimeWindows = false;
naRouteSolver.OutputLines = esriNAOutputLineType.esriNAOutputLineTrueShapeWithMeasure;
//Set some properties on the general INASolverSettings interface
IStringArray restrictions = naSolverSettings.RestrictionAttributeNames;
restrictions.Add("Oneway");
naSolverSettings.RestrictionAttributeNames = restrictions;
// Update the context based on the changes made to the solver settings
naSolver.UpdateContext(naContext, deNetworkDataset, new GPMessagesClass());
//Return the layer
return naLayer;
}
public void Initialize(INetworkDataset networkDataset, IDENetworkDataset DataElement, INetworkSource netSource, IEvaluatedNetworkAttribute netAttribute)
{
// Initialize is called once per session (ArcMap session, ArcCatalog session, etc.) to initialize the evaluator for an associated network dataset
m_networkDataset = networkDataset;
m_networkSource = netSource;
m_networkAttribute = netAttribute;
m_thisNetworkAttributeID = netAttribute.ID;
m_baseNetworkAttributeID = -1;
//The attribute name must begin with one or more non underscore characters followed by
//an underscore character and then the name of the base cost attribute.
//The underscore prior to the base attribute name should be the first underscore in the name.
string thisAttributeName = netAttribute.Name;
int nPos = thisAttributeName.IndexOf('_');
int nLastPos = thisAttributeName.Length - 1;
string baseNetAttributeName;
INetworkAttribute baseNetAttribute = null;
if (nPos > 0 && nPos < nLastPos)
{
baseNetAttributeName = thisAttributeName.Remove(0, nPos + 1);
try
{
baseNetAttribute = networkDataset.get_AttributeByName(baseNetAttributeName);
}
catch (COMException ex)
{
baseNetAttribute = null;
string msg = string.Format("Base Attribute ({0}) not found. {1}.", baseNetAttributeName, ex.Message);
System.Diagnostics.Trace.WriteLine(msg, "Scale Subset Network Evaluator");
}
if (baseNetAttribute != null)
{
if (baseNetAttribute.ID != m_thisNetworkAttributeID)
m_baseNetworkAttributeID = baseNetAttribute.ID;
}
}
Refresh();
}
private IDENetworkDataset GetDENetworkDataset(INetworkDataset networkDataset)
{
IDatasetComponent dsComponent;
dsComponent = pNetworkDataset as IDatasetComponent;
return dsComponent.DataElement as IDENetworkDataset;
}
//*********************************************************************************
// ArcGIS Network Analyst extension functions
// ********************************************************************************
//*********************************************************************************
// Create NASolver and NAContext
//*********************************************************************************
public INAContext CreateSolverContext(INetworkDataset networkDataset)
{
//Get the Data Element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver = new NALocationAllocationSolverClass();
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return contextEdit as INAContext;
}
//��鹤�������Ƿ������������
private bool CheckNetWorkExtension(string strWorkspace)
{
IFeatureWorkspace pFeatWS = Utility.OpenWorkspace(strWorkspace) as IFeatureWorkspace;
INetworkDataset pNetDataset = Utility.OpenNetworkDataset(pFeatWS as IWorkspace, "streets_nd");
if (pNetDataset != null)
{
// m_NAContext = Utility.CreateSolverContext(pNetDataset, "��ʩ");
m_pNetDataset = pNetDataset;
return true;
}
else
{
return false;
}
}
public void Initialize(INetworkDataset networkDataset, IDENetworkDataset dataElement, INetworkSource source, IEvaluatedNetworkAttribute evaluatedNetworkAttribute)
{
// Cache the network dataset geodatabase path
m_workspace_path_name = ((IDataset)networkDataset).Workspace.PathName;
m_UseSpecificDates = false;
m_CacheOnEverySolve = false;
m_RidingABicycle = false;
m_UsingAWheelchair = false;
m_networkAttribute = evaluatedNetworkAttribute as INetworkAttribute2;
CheckForVerboseLogging();
if (m_VerboseLogging) WriteToOutputFile(m_LogFile, "Initialize" + Environment.NewLine + "m_workspace_path_name: " + m_workspace_path_name + Environment.NewLine + " m_UseSpecificDates defaults to: " + m_UseSpecificDates);
}
//创建解决器上下文
public static INAContext CreateSolverContext(INetworkDataset networkDataset,string ServiceType)
{
//Get the Data Element
IDENetworkDataset deNDS = GetDENetworkDataset(networkDataset);
INASolver naSolver=null;
switch (ServiceType)
{
case "路线":
naSolver = new NARouteSolverClass();
break;
case "服务":
naSolver = new NAServiceAreaSolverClass();
break;
case "设施":
naSolver = new NAClosestFacilitySolverClass();
break;
case "费用":
naSolver = new NAODCostMatrixSolverClass();
break;
}
INAContextEdit contextEdit = naSolver.CreateContext(deNDS, naSolver.Name) as INAContextEdit;
contextEdit.Bind(networkDataset, new GPMessagesClass());
return contextEdit as INAContext;
}