/// <summary>
/// To open the editor form, we need to first determine which barrier is
/// being edited, then pass that value to the form
/// </summary>
private void OpenBarrierEditorForm()
{
// get the barrier layer by using the category name to as the NAClassName
INAWindowCategory activeCategory = GetActiveCategory();
string categoryName = activeCategory.NAClass.ClassDefinition.Name;
INALayer naLayer = GetActiveAnalysisLayer();
ILayer layer = naLayer.get_LayerByNAClassName(categoryName);
// get a selection count and popup a message if more or less than one item is selected
IFeatureSelection fSel = layer as IFeatureSelection;
ISelectionSet selSet = fSel.SelectionSet;
if (selSet.Count != 1)
{
System.Windows.Forms.MessageBox.Show("Only one barrier in a category can be selected at a time for this command to execute", "Barrier Location Editor Warning");
}
else
{
// get the object IDs of the selected item
int id = selSet.IDs.Next();
// Get the barrier feature by using the selected ID
IFeatureClass fClass = naLayer.Context.NAClasses.get_ItemByName(categoryName) as IFeatureClass;
IFeature barrierFeature = fClass.GetFeature(id);
// display the form for editing the barrier
EditorForm form = new EditorForm(m_application, naLayer.Context, barrierFeature);
form.ShowDialog();
form = null;
}
}
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);
}
}
}
/// <summary>
/// 最短路径分析
/// </summary>
/// <param name="mapControl">地图控件</param>
/// <param name="gdbfileName">数据库文件</param>
/// <param name="featureDatasetName">要素集名字</param>
/// <param name="ndsName">网络数据集名字</param>
/// <param name="featureClasses">参数要素类及其阈值,其中键值包括:Stops(路线经过结点),Barriers,PolylineBarriers,PolygonBarriers</param>
/// <param name="isShowDataBase">是否显示网络数据集</param>
/// <param name="isShowNalayer">是否显示网络分析图层</param>
/// <param name="routeLayer">最近路线图层</param>
public static bool Short_Path(AxMapControl mapControl, string gdbfileName, string featureDatasetName, string ndsName, IDictionary <string, DecorateRouteFeatureClass> featureClasses, bool isShowDataBase, bool isShowNalayer, ref ILayer routeLayer)
{
//首先判断输入的参数要素类是否合法
if (!FeatureClassKeyIsRight(featureClasses))
{
throw new Exception("参数字典错误");
}
// mapControl.ClearLayers();
//打开工作空间
IFeatureWorkspace pFeatureWorkspace = OpenWorkspace(gdbfileName) as IFeatureWorkspace;
if (pFeatureWorkspace == null)
{
return(false);
}
//获取网络数据集
INetworkDataset pNetworkDataset = OpenNetworkDataset(pFeatureWorkspace as IWorkspace, featureDatasetName, ndsName);
if (pNetworkDataset == null)
{
Debug.Print("无法获取网络数据集");
return(false);
}
//获取网络分析上下文
INAContext pNAContext = CreateNAContext(pNetworkDataset);
//打开节点图层 一般和网络数据集放置在一起 名称是xxx_Junctions
IFeatureClass pVertexFC = pFeatureWorkspace.OpenFeatureClass(ndsName + "_Junctions");
ILayer pLayer = null;
// 显示网络数据集图层
if (isShowDataBase)
{
INetworkLayer pNetworkLayer = new NetworkLayerClass();
pNetworkLayer.NetworkDataset = pNetworkDataset;
pLayer = pNetworkLayer as ILayer;
pLayer.Name = "网络数据集";
mapControl.AddLayer(pLayer, 0);
}
//创建网络分析图层
INALayer naLayer = pNAContext.Solver.CreateLayer(pNAContext);
//显示网络分析图层
if (isShowNalayer)
{
pLayer = naLayer as ILayer;
pLayer.Name = pNAContext.Solver.DisplayName;
pLayer.SpatialReference = mapControl.SpatialReference;
mapControl.AddLayer(pLayer, 0);
IActiveView pActiveView = mapControl.ActiveView;
IMap pMap = pActiveView.FocusMap;
IGraphicsContainer pGraphicsContainer = pMap as IGraphicsContainer;
mapControl.Refresh();
}
INASolver naSolver = pNAContext.Solver;
//插入相关数据
foreach (var value in featureClasses)
{
LoadNANetWorkLocations(pNAContext, value.Key, value.Value.FeatureClass, value.Value.SnapTolerance);
}
//插入经过点
//LoadNANetWorkLocations(pNAContext,"Stops", stopFeatureClass, 30);
//插入障碍点
// LoadNANetWorkLocations(pNAContext, "Barriers", barriesFeatureClass, 30);
IGPMessages gpMessages = new GPMessagesClass();
// SetSolverSettings(pNAContext);
//寻找最短路径
try
{
pNAContext.Solver.Solve(pNAContext, gpMessages, new CancelTrackerClass());
routeLayer = naLayer.get_LayerByNAClassName("Routes");
}
catch (Exception e)
{
Debug.Print("无法找到最短路径:" + e.Message);
return(false);
}
mapControl.Refresh();
if (gpMessages != null)
{
for (int i = 0; i < gpMessages.Count; i++)
{
switch (gpMessages.GetMessage(i).Type)
{
case esriGPMessageType.esriGPMessageTypeError:
Debug.Print("错误 " + gpMessages.GetMessage(i).ErrorCode.ToString() + " " + gpMessages.GetMessage(i).Description);
break;
case esriGPMessageType.esriGPMessageTypeWarning:
Debug.Print("警告 " + gpMessages.GetMessage(i).Description);
break;
default:
Debug.Print("信息 " + gpMessages.GetMessage(i).Description);
break;
}
}
}
return(true);
}