/// <summary>
/// Set solver settings
/// </summary>
/// <param name="strNAClassName">NAClass name</param>
/// <param name="inputFC">Input feature class</param>
/// <param name="maxSnapTolerance">Max snap tolerance</param>
public void LoadNANetworkLocations(string strNAClassName, IFeatureClass inputFC, double maxSnapTolerance)
{
INamedSet classes = m_NAContext.NAClasses;
INAClass naClass = classes.get_ItemByName(strNAClassName) as INAClass;
// Delete existing locations from the specified NAClass
naClass.DeleteAllRows();
// Create a NAClassLoader and set the snap tolerance (meters unit)
INAClassLoader classLoader = new NAClassLoader();
classLoader.Locator = m_NAContext.Locator;
if (maxSnapTolerance > 0) ((INALocator3)classLoader.Locator).MaxSnapTolerance = maxSnapTolerance;
classLoader.NAClass = naClass;
// Create field map to automatically map fields from input class to NAClass
INAClassFieldMap fieldMap = new NAClassFieldMapClass();
fieldMap.CreateMapping(naClass.ClassDefinition, inputFC.Fields);
classLoader.FieldMap = fieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = m_NAContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(m_NAContext);
// Load network locations
int rowsIn = 0;
int rowsLocated = 0;
classLoader.Load((ICursor)inputFC.Search(null, true), null, ref rowsIn, ref rowsLocated);
// Message all of the network analysis agents that the analysis context has changed.
((INAContextEdit)m_NAContext).ContextChanged();
}
private bool LoadLocations(IFeatureWorkspace featureWorkspace)
{
IFeatureClass inputFeatureClass = null;
try
{
inputFeatureClass = featureWorkspace.OpenFeatureClass(txtInputFacilities.Text);
}
catch (Exception)
{
MessageBox.Show("Specified input feature class does not exist");
return(false);
}
INamedSet classes = m_naContext.NAClasses;
INAClass naClass = classes.get_ItemByName("Facilities") as INAClass;
// delete existing locations, except barriers
naClass.DeleteAllRows();
// Create a NAClassLoader and set the snap tolerance (meters unit)
INAClassLoader naClassLoader = new NAClassLoaderClass();
naClassLoader.Locator = m_naContext.Locator;
naClassLoader.Locator.SnapTolerance = 100;
naClassLoader.NAClass = naClass;
// Create field map to automatically map fields from input class to NAClass
INAClassFieldMap naClassFieldMap = new NAClassFieldMapClass();
naClassFieldMap.CreateMapping(naClass.ClassDefinition, inputFeatureClass.Fields);
naClassLoader.FieldMap = naClassFieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = m_naContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(m_naContext);
// load network locations
int rowsIn = 0;
int rowsLocated = 0;
naClassLoader.Load(inputFeatureClass.Search(null, true) as ICursor, null, ref rowsIn, ref rowsLocated);
if (rowsLocated <= 0)
{
MessageBox.Show("Facilities were not loaded from input feature class");
MessageBox.Show("没有导入任何结果！");
return(false);
}
// Message all of the network analysis agents that the analysis context has changed
INAContextEdit naContextEdit = m_naContext as INAContextEdit;
naContextEdit.ContextChanged();
return(true);
}
public override void OnClick()
{
if (m_mapControl == null)
{
MessageBox.Show("Error: Map control is null for this command");
return;
}
// Get the NALayer and corresponding NAContext of the layer that
// was right-clicked on in the table of contents
// m_MapControl.CustomProperty was set in frmMain.axTOCControl1_OnMouseDown
INALayer naLayer = m_mapControl.CustomProperty as INALayer;
if (naLayer == null)
{
MessageBox.Show("Error: NALayer was not set as the CustomProperty of the map control");
return;
}
var naEnv = CommonFunctions.GetTheEngineNetworkAnalystEnvironment();
if (naEnv == null || naEnv.NAWindow == null)
{
MessageBox.Show("Error: EngineNetworkAnalystEnvironment is not properly configured");
return;
}
// Set the active Analysis layer
IEngineNAWindow naWindow = naEnv.NAWindow;
if (naWindow.ActiveAnalysis != naLayer)
{
naWindow.ActiveAnalysis = naLayer;
}
// Remember what the current category is
IEngineNAWindowCategory originalCategory = naWindow.ActiveCategory;
// Loop through deleting all the items from all the categories
INamedSet naClasses = naLayer.Context.NAClasses;
var naHelper = naEnv as IEngineNetworkAnalystHelper;
for (int i = 0; i < naClasses.Count; i++)
{
IEngineNAWindowCategory category = naWindow.get_CategoryByNAClassName(naClasses.get_Name(i));
naWindow.ActiveCategory = category;
naHelper.DeleteAllNetworkLocations();
}
//Reset to the original category
naWindow.ActiveCategory = originalCategory;
// Redraw the map
m_mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, m_mapControl.Extent);
}
/// <summary>
/// Load the input table and create field map to map fields from input table to NAClass
/// </summary>
/// <param name="strNAClassName">NAClass name</param>
/// <param name="inputTable">Input table</param>
public void LoadNANetworkLocations(string strNAClassName, ITable inputTable)
{
INamedSet classes = m_NAContext.NAClasses;
INAClass naClass = classes.get_ItemByName(strNAClassName) as INAClass;
// Delete existing rows from the specified NAClass
naClass.DeleteAllRows();
// Create a NAClassLoader and set the snap tolerance (meters unit)
INAClassLoader loader = new NAClassLoader();
loader.Locator = m_NAContext.Locator;
loader.Locator.SnapTolerance = 100;
loader.NAClass = naClass;
// Create field map to automatically map fields from input table to NAclass
INAClassFieldMap fieldMap = new NAClassFieldMapClass();
fieldMap.CreateMapping(naClass.ClassDefinition, inputTable.Fields);
loader.FieldMap = fieldMap;
// Avoid loading network locations onto non-traversable portions of elements
INALocator3 locator = m_NAContext.Locator as INALocator3;
locator.ExcludeRestrictedElements = true;
locator.CacheRestrictedElements(m_NAContext);
// Load input table
int rowsIn = 0;
int rowsLocated = 0;
loader.Load(inputTable.Search(null, true), null, ref rowsIn, ref rowsLocated);
// Message all of the network analysis agents that the analysis context has changed.
INAContextEdit naContextEdit = m_NAContext as INAContextEdit;
naContextEdit.ContextChanged();
}
public static void GetClasses(INALayer layer, out NameValueCollection inputClasses,
out NameValueCollection outputClasses)
{
INamedSet nAClasses = layer.Context.NAClasses;
inputClasses = new NameValueCollection();
outputClasses = new NameValueCollection();
for (int i = 0; i < nAClasses.Count; i++)
{
INAClass class2 = nAClasses.get_Item(i) as INAClass;
string name = class2.ClassDefinition.Name;
string str2 = layer.get_LayerByNAClassName(name).Name;
if (class2.ClassDefinition.IsInput)
{
inputClasses.Add(str2, name);
}
else
{
outputClasses.Add(str2, name);
}
}
}
public override void OnClick()
{
IEngineNetworkAnalystEnvironment naEnv = new EngineNetworkAnalystEnvironmentClass();
IEngineNetworkAnalystHelper naHelper = naEnv as IEngineNetworkAnalystHelper;
IEngineNAWindow naWindow = naEnv.NAWindow;
// Get the NALayer and corresponding NAContext of the layer that
// was right-clicked on in the table of contents
// m_MapControl.CustomProperty was set in frmMain.axTOCControl1_OnMouseDown
INALayer naLayer = (INALayer)m_mapControl.CustomProperty;
INAContext naContext = naLayer.Context;
// Set the active Analysis layer
if (naWindow.ActiveAnalysis != naLayer)
{
naWindow.ActiveAnalysis = naLayer;
}
// Remember what the current category is
IEngineNAWindowCategory currentCategory = naWindow.ActiveCategory;
// Loop through deleting all the items from all the categories
INamedSet naClasses = naContext.NAClasses;
for (int i = 0; i < naClasses.Count; i++)
{
IEngineNAWindowCategory category = naWindow.get_CategoryByNAClassName(naClasses.get_Name(i));
naWindow.ActiveCategory = category;
naHelper.DeleteAllNetworkLocations();
}
//Reset to the original category
naWindow.ActiveCategory = currentCategory;
m_mapControl.Refresh(esriViewDrawPhase.esriViewGeography, naLayer, m_mapControl.Extent);
}
