public static IArray Identity(IFeatureClass featureclass, IGeometry geometry, string whereClause)
{
if (geometry == null)
{
return(null);
}
if (geometry.GeometryType == esriGeometryType.esriGeometryPoint)
{
ITopologicalOperator topop = geometry as ITopologicalOperator;
double buffer = 0.0;
if (double.TryParse(System.Configuration.ConfigurationManager.AppSettings["BUFFER"], out buffer))
{
geometry = topop.Buffer(buffer);
}
}
IFeatureLayer featureLayer = new FeatureLayerClass();
featureLayer.FeatureClass = featureclass;
IFeatureLayerDefinition featureLayerDefinition = featureLayer as IFeatureLayerDefinition;
featureLayerDefinition.DefinitionExpression = whereClause;
IFeatureLayer newfeatureLayer = featureLayerDefinition.CreateSelectionLayer(featureclass.AliasName, false, null, whereClause);
IIdentify identify = featureLayer as IIdentify;
IArray identifyObjs = identify.Identify(geometry);
return(identifyObjs);
}
private static List <ArcmapPickCandidate> FindPickCandidates(
IPoint mapPoint, List <IFeatureLayer> pickLayers, double mapScale, double searchTolerance)
{
List <ArcmapPickCandidate> result = new List <ArcmapPickCandidate>();
if (pickLayers.Count > 0)
{
IEnvelope searchEnvelope = mapPoint.Envelope;
searchEnvelope.Expand(searchTolerance, searchTolerance, false);
foreach (IFeatureLayer pickLayer in pickLayers)
{
if (ArcmapLayerUtils.LayerIsVisible(pickLayer, mapScale))
{
IIdentify identifier = pickLayer as IIdentify;
IArray elements = identifier.Identify(searchEnvelope);
foreach (object element in elements.Enumerate())
{
IFeature feature = (element as IRowIdentifyObject).Row as IFeature;
double distance;
IPoint footPoint;
CalculateNearestDistanceToFeature(mapPoint, feature, out distance, out footPoint);
ArcmapPickCandidate ranking = new ArcmapPickCandidate(element as IIdentifyObj, distance);
result.Add(ranking);
}
}
}
}
return(result);
}
/// <summary>
/// 查询点缓冲区以内的要素
/// </summary>
/// <param name="point"></param>
/// <param name="map"></param>
/// <param name="layer"></param>
/// <param name="buffer_distance"></param>
/// <returns></returns>
public IFeature QuerySingleFeatureByPoint(IPoint point, IMap map, IFeatureLayer layer, double buffer_distance)
{
//为了安全在此判断是否map中是否已经包括layer
bool isContain = false;
for (int i = 0; i < map.LayerCount; i++)
{
if (map.get_Layer(i) == layer)
{
isContain = true;
break;
}
}
if (!isContain)
{
throw new Exception("Map中不包括该图层");
}
ITopologicalOperator pTopOperator = point as ITopologicalOperator;
IGeometry pGeometry = pTopOperator.Buffer(buffer_distance);
IIdentify pIdentity = layer as IIdentify;
IArray pArray = pIdentity.Identify(pGeometry);
IFeature pFeature = null;
if (pArray != null)
{
pFeature = (pArray.get_Element(0) as IRowIdentifyObject).Row as IFeature;
}
return(pFeature);
}
/// <summary>
/// 通过缓冲区二分查找获取点到线要素图层中的最短距离
/// 基于二分查找和贪心算法
/// </summary>
/// <param name="featureLayer">要素图层</param>
/// <param name="point">被查询点</param>
/// <param name="thefeature">缓冲区中最近要素</param>
/// <param name="distance">最短距离</param>
/// <param name="disNum">在线段上的位置集合,1在右方,2在左方，0在线上</param>
/// <param name="minSpan">最小间距</param>
/// <returns>离点最近的单线</returns>
public static IPoint GetNearestLineInFeatureLayerByBufferBinary(IFeatureLayer featureLayer, IPoint point, ref IFeature thefeature, ref double distance, ref int disNum, double minSpan)
{
#region 初始化操作
IQueryFilter pQueryFilter = new QueryFilter();
pQueryFilter.WhereClause = "";
//要素个数为0则直接返回null
int count = featureLayer.FeatureClass.FeatureCount(pQueryFilter);
if (count == 0)
{
return(null);
}
//个数为1则直接计算
else if (count == 1)
{
return(GetNearestLineInFeatureLayer(featureLayer, point, ref thefeature, ref distance, ref disNum));
}
#endregion
double low = 0;
double high = GetPointToTheEnvelopMax(featureLayer, point);
IArray pArray = null;
////求最大缓冲区内的要素个数
ITopologicalOperator pTopOperator = point as ITopologicalOperator;
IGeometry pGeometry = pTopOperator.Buffer(high);
ILayer layer = featureLayer as ILayer;
IIdentify pIdentity = layer as IIdentify;
pArray = pIdentity.Identify(pGeometry);
// 如果为0或者计算错误直接返回null
if (pArray.Count == 0 || pArray == null)
{
return(null);
}
//如果只有一个要素 则直接计算返回
else if (pArray.Count == 1)
{
return(GetPointToIArrayMin(point, ref thefeature, ref distance, ref disNum, pArray));
}
///////////////////////////////////////////////
while ((high - low) < minSpan)
{
double buffer_distance = (low + high) / 2;
pGeometry = pTopOperator.Buffer(buffer_distance);
pArray = pIdentity.Identify(pGeometry);
if (pArray.Count == 0)
{
low = buffer_distance;
}
else
{
high = buffer_distance;
}
}
////此时high可以认为是最低缓冲区距离 直接求解最短距离
pGeometry = pTopOperator.Buffer(high);
pArray = pIdentity.Identify(pGeometry);
return(GetPointToIArrayMin(point, ref thefeature, ref distance, ref disNum, pArray));
}
public void DoLayerIdentify(ILayer layer, IGeometry geo)
{
if (layer != null && layer is IIdentify)
{
IIdentify id = layer as IIdentify;
IArray objs = id.Identify(geo);
if (objs != null)
{
}
}
}
/// <summary>
/// 暴力获取点到其缓冲区中的最短距离
/// </summary>
/// <param name="featureLayer">要素图层</param>
/// <param name="point">被查询点</param>
/// <param name="thefeature">缓冲区中第一个要素</param>
/// <param name="distance">最短距离</param>
/// <param name="disNum">在线段上的位置集合,1在右方,2在左方，0在线上</param>
/// <param name="buffer_distance">缓冲区距离</param>
/// <returns>离点最近的单线</returns>
public static IPoint GetNearestLineInFeatureLayer(IFeatureLayer featureLayer, IPoint point, ref IFeature thefeature, ref double distance, ref int disNum, double buffer_distance)
{
ITopologicalOperator pTopOperator = point as ITopologicalOperator;
IGeometry pGeometry = pTopOperator.Buffer(buffer_distance);
ILayer layer = featureLayer as ILayer;
IIdentify pIdentity = layer as IIdentify;
IArray pArray = pIdentity.Identify(pGeometry);
if (pArray == null)
{
return(null);
}
return(GetPointToIArrayMin(point, ref thefeature, ref distance, ref disNum, pArray));
}
/// <summary>
/// 通过梯级缓冲区获取点到线要素图层中的最短距离
/// </summary>
/// <param name="featureLayer">要素图层</param>
/// <param name="point">被查询点</param>
/// <param name="thefeature">缓冲区中第一个要素</param>
/// <param name="distance">最短距离</param>
/// <param name="disNum">在线段上的位置集合,1在右方,2在左方，0在线上</param>
/// <param name="buffer_Span">缓冲区梯度</param>
/// <returns>离点最近的单线</returns>
public static IPoint GetNearestLineInFeatureLayerByBuffer(IFeatureLayer featureLayer, IPoint point, ref IFeature thefeature, ref double distance, ref int disNum, double buffer_Span)
{
#region 初始化操作
IQueryFilter pQueryFilter = new QueryFilter();
pQueryFilter.WhereClause = "";
//要素个数为0则直接返回null
int count = featureLayer.FeatureClass.FeatureCount(pQueryFilter);
if (count == 0)
{
return(null);
}
//个数为1则直接计算
else if (count == 1)
{
return(GetNearestLineInFeatureLayer(featureLayer, point, ref thefeature, ref distance, ref disNum));
}
#endregion
double buffer_distance = 0;
while (true)
{
buffer_distance += buffer_Span;
ITopologicalOperator pTopOperator = point as ITopologicalOperator;
IGeometry pGeometry = pTopOperator.Buffer(buffer_distance);
ILayer layer = featureLayer as ILayer;
IIdentify pIdentity = layer as IIdentify;
IArray pArray = pIdentity.Identify(pGeometry);
if (pArray == null)
{
return(null);
}
if (pArray.Count == 0)
{
continue;
}
return(GetPointToIArrayMin(point, ref thefeature, ref distance, ref disNum, pArray));
}
}
private void MapUserIdentify(double mapX, double mapY)
{
try
{
//axMapControl1.Map.ClearSelection();
ESRI.ArcGIS.Controls.IMapControl3 m_mapControl = (IMapControl3)axMapControl1.Object;
IMap pMap = axMapControl1.Map;
IGroupLayer pGroupLayer = new GroupLayer();
if (pMap.LayerCount == 0)
{
return;
}
IEnumLayer pEnumLayer;
ILayer pLayer;
pEnumLayer = pMap.get_Layers(null, true);
if (pEnumLayer == null)
{
return;
}
pEnumLayer.Reset();
double dCurrScale = m_mapControl.MapScale;
for (pLayer = pEnumLayer.Next(); pLayer != null; pLayer = pEnumLayer.Next())
{
if (pLayer.Visible)
{
if (pLayer is IGroupLayer)
{
continue;
}
if (pLayer.MinimumScale != 0 && dCurrScale > pLayer.MinimumScale)
{
continue;
}
if (pLayer.MaximumScale != 0 && dCurrScale < pLayer.MaximumScale)
{
continue;
}
pGroupLayer.Add(pLayer);
}
}
IPoint pPoint = new ESRI.ArcGIS.Geometry.Point();
pPoint.X = mapX; pPoint.Y = mapY;
IIdentifyObj pIdObj;
IIdentify pIdentify = pGroupLayer as IIdentify;
IArray pIDArray;
IFeatureIdentifyObj pFeatIdObj;
IEnvelope pEnv = pPoint.Envelope;
IDisplayTransformation pDT = m_mapControl.ActiveView.ScreenDisplay.DisplayTransformation;
pEnv.Expand(pDT.VisibleBounds.Width / 200, pDT.VisibleBounds.Height / 200, false);
pIDArray = pIdentify.Identify(pEnv);
if (pIDArray == null || pIDArray.Count == 0)
{
return;
}
pFeatIdObj = pIDArray.get_Element(0) as IFeatureIdentifyObj;
pIdObj = pFeatIdObj as IIdentifyObj;
IRowIdentifyObject pRowIdentifyObj = pFeatIdObj as IRowIdentifyObject;
IFeature pFeature = pRowIdentifyObj.Row as IFeature;
if (pFeature != null && pFeature.Shape != null && !pFeature.Shape.IsEmpty)
{
//axMapControl1.FlashShape(pFeature.Shape);
axMapControl1.Map.SelectFeature(pIdObj.Layer, pFeature);
FlashFeature(axMapControl1, pFeature.Shape);
}
// pIdObj.Flash(m_mapControl.ActiveView.ScreenDisplay);//The Flash method is not supported with ArcGIS Engine, use the IHookActions.DoActions() method with the esriHookActionsFlash for this functionality.
ILayer pIdentiyLayer = pIdObj.Layer;
DataTable pTable = new DataTable();
DataColumn pDataColumn = pTable.Columns.Add();
pDataColumn.ColumnName = "列名";
pDataColumn = pTable.Columns.Add();
pDataColumn.ColumnName = "值";
DataRow pFirestDataRow = pTable.Rows.Add();
pFirestDataRow[0] = "所在层";
pFirestDataRow[1] = pIdentiyLayer.Name;
if (pIdentiyLayer is IFeatureLayer)
{
IRowIdentifyObject pRowObj = pIdObj as IRowIdentifyObject;
// IRow pRow = pRowObj.Row;
IFeature pRow = pRowObj.Row as IFeature;
IFields pFields = pRow.Fields;
for (int i = 0; i < pFields.FieldCount; i++)
{
IField pField = pFields.get_Field(i);
DataRow pDataRow = null;
/*
* switch (pField.Type)
* {
* case esriFieldType.esriFieldTypeOID:
* pDataRow = pTable.Rows.Add();
* pDataRow[0] = pField.Name;
* pDataRow[1] = pRow.OID.ToString();
* break;
* case esriFieldType.esriFieldTypeGeometry:
* //pDataRow[0] = "Geometry";
* //pDataRow[1] = QueryShapeType(pField.GeometryDef.GeometryType);;
* break;
* default:
* pDataRow = pTable.Rows.Add();
* pDataRow[0] = pField.Name;
* pDataRow[1] = pRow.get_Value(i).ToString();
* break;
* }
* * */
//////////////////////////////////////////////////
string sValue = pRow.get_Value(i).ToString();
string strFName = pField.AliasName.ToUpper();
string strUName = strFName.ToUpper();
if (strUName == "SHAPE" || strUName == "LENGTH" || strUName == "OBJECTID" || strUName == "ID" || strUName == "FNODE_" || strUName == "TNODE_" || strUName == "LPOLY_" || strUName == "RPOLY_" || strUName == "SDXL_" || strUName == "SDXL_ID" || strUName == "OBJECTID_1" || strUName == "FID")
{
continue;
}
else if (strUName == "SHAPE.LEN" || strUName == "SHAPE_LENG")
{
strFName = "几何长度";
}
else if (strUName == "SHAPE_AREA" || strUName == "SHAPE.AREA")
{
strFName = "多边形面积";
}
else if (strUName == "HEIGHT")
{
strFName = "高程";
}
else if (strUName == "NAME")
{
strFName = "名称";
}
else if (strUName == "TYPE")
{
strFName = "类型";
}
else if (strUName == "SUBTYPE")
{
strFName = "子类型";
}
if (strUName == "LENGTH" || strUName == "SHAPE.LEN")
{
IUnitConverter myUnit = new UnitConverterClass();
sValue = Math.Round(myUnit.ConvertUnits((double)pRow.get_Value(i), esriUnits.esriMeters, esriUnits.esriKilometers), 2).ToString();
sValue = sValue.ToString() + "千米";
}
if (strUName == "SHAPE_AREA" || strUName == "SHAPE.AREA")
{
IGeometry pGeo = pRow.ShapeCopy;
pGeo.Project(axMapControl1.Map.SpatialReference);
IPolygon pPolygon = (IPolygon)pGeo;
IArea pArea = (IArea)pPolygon;
double strValue = pArea.Area * 0.000001;
//// double strValue = Math.Abs((double)pFeature.get_Value(j)) * 10585;
strValue = Math.Round(strValue, 2);
sValue = strValue.ToString() + "平方千米";
}
esriFieldType tFieldTypy = pField.Type;
if (tFieldTypy == esriFieldType.esriFieldTypeGeometry)
{
sValue = pField.GeometryDef.GeometryType.ToString();
sValue = sValue.Substring(12, sValue.Length - 12);
}
pDataRow = pTable.Rows.Add();
pDataRow[0] = strFName;
pDataRow[1] = sValue;
//////////////////////////////////////////////////
}
}
else if (pIdentiyLayer is ITinLayer)
{
ITinLayer pTinLayer = (ITinLayer)pIdentiyLayer;
ITinSurface pTinSurface = (ITinSurface)pTinLayer.Dataset;
if (pTinSurface == null)
{
return;
}
ITinSurfaceElement pTinSurfaceElement = pTinSurface.GetSurfaceElement(pPoint);
if (pTinSurfaceElement == null)
{
return;
}
IFields pFields = pTinLayer.Dataset.Fields;
DataRow pDataRow = null;
pDataRow = pTable.Rows.Add();
pDataRow[0] = "高度";
pDataRow[1] = pTinSurfaceElement.Elevation.ToString();
pDataRow = pTable.Rows.Add();
pDataRow[0] = "坡度";
pDataRow[1] = pTinSurfaceElement.SlopeDegrees.ToString();
pDataRow = pTable.Rows.Add();
pDataRow[0] = "方向";
pDataRow[1] = pTinSurfaceElement.AspectDegrees.ToString();
}
if (pIdentiyLayer is IRasterLayer)
{
MessageBox.Show("aa");
}
//ShowIndetify(pTable);
//m_pMainform.ShowIndetify(pTable);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return;
}
}
protected override void OnMouseDown(ESRI.ArcGIS.Desktop.AddIns.Tool.MouseEventArgs arg)
{
int X = arg.X;
int Y = arg.Y;
IMxApplication pMxApp = null;
IMxDocument pMxDoc = null;
pMxApp = (IMxApplication)ArcMap.Application;
pMxDoc = (IMxDocument)ArcMap.Application.Document;
// calculate tolerance rectangle to identify features inside it
int Tolerance = 0;
Tolerance = pMxDoc.SearchTolerancePixels;
IDisplayTransformation pDispTrans = null;
pDispTrans = pMxApp.Display.DisplayTransformation;
tagRECT pToleranceRect = new tagRECT();
pToleranceRect.left = X - Tolerance;
pToleranceRect.right = X + Tolerance;
pToleranceRect.top = Y - Tolerance;
pToleranceRect.bottom = Y + Tolerance;
IEnvelope pSearchEnvelope = null;
pSearchEnvelope = new EnvelopeClass();
pDispTrans.TransformRect(pSearchEnvelope, ref pToleranceRect, (int)(esriDisplayTransformationEnum.esriTransformPosition | esriDisplayTransformationEnum.esriTransformToMap));
// identify feature points of measurement
IBasicDocument pBasicDoc = null;
pBasicDoc = (IBasicDocument)ArcMap.Application.Document;
pSearchEnvelope.SpatialReference = pMxDoc.ActiveView.FocusMap.SpatialReference;
IIdentify pIdentify = null;
pIdentify = (IIdentify)pMxDoc.FocusMap.get_Layer(0);
if (pIdentify == null)
{
MessageBox.Show("No layer");
return;
}
IArray pIDArray = null;
pIDArray = pIdentify.Identify(pSearchEnvelope);
// get object from feature point
IIdentifyObj pIDObj = null;
if (pIDArray != null)
{
pIDObj = (IIdentifyObj)pIDArray.get_Element(0);
}
if (pIDObj == null)
{
MessageBox.Show("No feature was identified");
return;
}
// get the name of the layer containing feature points
ILayer pLayer = null;
pLayer = pMxDoc.FocusMap.get_Layer(0);
string layerName = null;
layerName = pLayer.Name;
// get primary display field for measurement values and set names of a date/time field and gage ID field
IFeatureLayer pFeatLayer = null;
pFeatLayer = (IFeatureLayer)pLayer;
string dataFldName = null;
string timefldName = null;
string gageIDFldName = null;
dataFldName = "TSValue";
timefldName = "TSDateTime"; // substitute data/time field name for different dataset
gageIDFldName = "Name"; // substitute gage ID field name for different dataset
// get display table from layer
ITable pTable = null;
IDisplayTable pDisplayTable = null;
pDisplayTable = (IDisplayTable)pLayer;
if (pDisplayTable != null)
{
pTable = pDisplayTable.DisplayTable;
if (pTable == null)
{
goto THEEND;
}
}
// get fields from display table
IFields pFields = null;
pFields = pTable.Fields;
long fldCount = 0;
fldCount = pFields.FieldCount;
// create WHERE clause from identified objects of measurement points
int gageIDFldIdx = 0;
gageIDFldIdx = pFields.FindField(gageIDFldName);
IRowIdentifyObject pRowIDObj = null;
pRowIDObj = (IRowIdentifyObject)pIDObj;
string gageID = null;
gageID = (string)pRowIDObj.Row.get_Value(gageIDFldIdx);
IFeatureLayerDefinition pFeatureLayerDef = null;
pFeatureLayerDef = (IFeatureLayerDefinition)pLayer;
string definitionExpression = null;
definitionExpression = pFeatureLayerDef.DefinitionExpression;
string whereClause = null;
if (definitionExpression == "")
{
whereClause = "[" + gageIDFldName + "] = '" + gageID + "'";
}
else
{
whereClause = "[" + gageIDFldName + "] = '" + gageID + "' AND " + definitionExpression;
}
//find color for the identified object from feature layer's renderer
IGeoFeatureLayer pGeoFeatureLayer = null;
pGeoFeatureLayer = (IGeoFeatureLayer)pLayer;
ILookupSymbol pLookupSymbol = null;
pLookupSymbol = (ILookupSymbol)pGeoFeatureLayer.Renderer;
IFeature pFeature = null;
pFeature = (IFeature)pRowIDObj.Row;
IMarkerSymbol pSymbol = null;
pSymbol = (IMarkerSymbol)pLookupSymbol.LookupSymbol(false, pFeature);
// Find an opened GraphWindow
IDataGraphBase pDataGraphBase = null;
IDataGraphT pDataGraphT = null;
IDataGraphWindow2 pDGWin = null;
IDataGraphCollection pDataGraphs = null;
pDataGraphs = (IDataGraphCollection)pMxDoc;
int grfCount = 0;
grfCount = pDataGraphs.DataGraphCount;
for (int i = 0; i < grfCount; i++)
{
pDataGraphBase = pDataGraphs.get_DataGraph(i);
pDGWin = FindGraphWindow(ref pDataGraphBase);
if (pDGWin != null)
{
break;
}
}
// if there is not an opened graph window - create a new graph for
if (pDGWin == null)
{
// create graph
pDataGraphT = new DataGraphTClass();
pDataGraphBase = (IDataGraphBase)pDataGraphT;
// load template from <ARCGISHOME>\GraphTemplates\
string strPath = null;
strPath = Environment.GetEnvironmentVariable("ARCGISHOME");
try
{
pDataGraphT.LoadTemplate(strPath + @"GraphTemplates\timeseries.tee");
}
catch
{ }
// graph, axis and legend titles. Substitute them for different input layer
pDataGraphT.GeneralProperties.Title = "Daily Streamflow for Guadalupe Basin in 1999";
pDataGraphT.LegendProperties.Title = "Monitoring Point";
pDataGraphT.get_AxisProperties(0).Title = "Streamflow (cfs)";
pDataGraphT.get_AxisProperties(0).Logarithmic = true;
pDataGraphT.get_AxisProperties(2).Title = "Date";
pDataGraphBase.Name = layerName;
}
else // get graph from the opened window
{
pDataGraphT = (IDataGraphT)pDataGraphBase;
}
// create vertical line series for all measurements for the identified gage
ISeriesProperties pSP = null;
pSP = pDataGraphT.AddSeries("line:vertical");
pSP.ColorType = esriGraphColorType.esriGraphColorCustomAll;
pSP.CustomColor = pSymbol.Color.RGB;
pSP.WhereClause = whereClause;
pSP.InLegend = true;
pSP.Name = gageID;
pSP.SourceData = pLayer;
pSP.SetField(0, timefldName);
pSP.SetField(1, dataFldName);
IDataSortSeriesProperties pSortFlds = null;
pSortFlds = (IDataSortSeriesProperties)pSP;
int idx = 0;
pSortFlds.AddSortingField(timefldName, true, ref idx);
pDataGraphBase.UseSelectedSet = true;
ITrackCancel pCancelTracker = null;
pCancelTracker = new CancelTracker();
pDataGraphT.Update(pCancelTracker);
// create data graph window if there is not any opened one
if (pDGWin == null)
{
pDGWin = new DataGraphWindowClass();
pDGWin.DataGraphBase = pDataGraphBase;
pDGWin.Application = ArcMap.Application;
pDGWin.Show(true);
pDataGraphs.AddDataGraph(pDataGraphBase);
}
THEEND:
return;
//base.OnMouseDown(arg);
}
public override void OnMouseDown(int Button, int Shift, int X, int Y)
{
if (Button == 1)
{
List <ILayer> layers = EngineAPI.GetLayers(this.m_hookHelper.FocusMap, "{6CA416B1-E160-11D2-9F4E-00C04F6BC78E}", null);
if (layers.Count == 0)
{
IdentifyManager.instance.FrmIdentify.Close();
IdentifyManager.instance.FrmIdentify = null;
EnviVars.instance.MapControl.CurrentTool = null;
EnviVars.instance.MapControl.MousePointer = esriControlsMousePointer.esriPointerDefault;
}
else
{
foreach (ILayer current in layers)
{
IIdentify identify = current as IIdentify;
IPoint point = this.m_hookHelper.ActiveView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);
IArray array = identify.Identify(point);
if (array != null && array.Count != 0)
{
IdentifyManager.instance.FrmIdentify.treeList1.ClearNodes();
IIdentifyObj identifyObj = array.get_Element(0) as IIdentifyObj;
identifyObj.Flash(this.m_hookHelper.ActiveView.ScreenDisplay);
TreeListNode treeListNode = IdentifyManager.instance.FrmIdentify.treeList1.AppendNode(new object[]
{
identifyObj.Layer.Name
}, 0, identifyObj);
DataColumn column = new DataColumn("字段", typeof(string));
DataColumn column2 = new DataColumn("值", typeof(string));
DataTable dataTable = new DataTable();
dataTable.Columns.Add(column);
dataTable.Columns.Add(column2);
if (current is IFeatureLayer)
{
IFeature feature = (identifyObj as IRowIdentifyObject).Row as IFeature;
TreeListNode treeListNode2 = IdentifyManager.instance.FrmIdentify.treeList1.AppendNode(new object[]
{
feature.OID.ToString()
}, treeListNode);
int num = feature.Fields.FindField((current as IFeatureLayer).FeatureClass.ShapeFieldName);
for (int i = 0; i < feature.Fields.FieldCount; i++)
{
if (num != i)
{
DataRow dataRow = dataTable.NewRow();
dataRow["字段"] = feature.Fields.get_Field(i).AliasName;
dataRow["值"] = feature.get_Value(i).ToString();
dataTable.Rows.Add(dataRow);
}
}
treeListNode2.Tag = dataTable;
}
else if (current is IRasterLayer)
{
IRasterLayer rasterLayer = current as IRasterLayer;
IRaster2 raster = rasterLayer.Raster as IRaster2;
int num2 = raster.ToPixelRow(point.Y);
int num3 = raster.ToPixelColumn(point.X);
double num4 = CommonAPI.ConvertToDouble(raster.GetPixelValue(0, num3, num2));
this.AddRow(dataTable, "像素值", num4);
this.AddRow(dataTable, "行号", num2);
this.AddRow(dataTable, "列号", num3);
IRasterIdentifyObj rasterIdentifyObj = array.get_Element(0) as IRasterIdentifyObj;
if (rasterLayer.BandCount != 1)
{
Regex regex = new Regex("\\d{2,3}");
MatchCollection matchCollection = regex.Matches(rasterIdentifyObj.MapTip);
if (matchCollection.Count == 3)
{
this.AddRow(dataTable, "R", matchCollection[0].Value);
this.AddRow(dataTable, "G", matchCollection[1].Value);
this.AddRow(dataTable, "B", matchCollection[2].Value);
}
}
IdentifyManager.instance.FrmIdentify.treeList1.AppendNode(new object[]
{
rasterIdentifyObj.Name
}, treeListNode, dataTable);
}
IdentifyManager.instance.FrmIdentify.UpdateStatusText(string.Format("X:{0:0.000 },Y:{1:0.000}", point.X, point.Y));
IdentifyManager.instance.FrmIdentify.treeList1.ExpandAll();
if (treeListNode.Nodes.Count > 0)
{
IdentifyManager.instance.FrmIdentify.treeList1.FocusedNode = treeListNode.Nodes[0];
}
IdentifyManager.instance.FrmIdentify.Show();
break;
}
IdentifyManager.instance.FrmIdentify.Close();
IdentifyManager.instance.FrmIdentify = null;
}
}
}
}
private static ValueList GetPixelData(IMap map, IEnvelope extent, HashSet <string> includeFields)
{
ValueList result = new ValueList();
for (int i = 0; i < map.LayerCount; i += 1)
{
ILayer layer = map.get_Layer(i);
if (!layer.Visible)
{
continue;
}
IIdentify id = layer as IIdentify;
if (id == null)
{
continue;
}
IArray data = id.Identify(extent);
if (data != null)
{
for (int j = 0; j < data.Count; j += 1)
{
object foundObj = data.get_Element(j);
IRasterIdentifyObj2 raster = foundObj as IRasterIdentifyObj2;
IRowIdentifyObject row = foundObj as IRowIdentifyObject;
if (raster != null)
{
int propertyIndex = 0;
string property;
string value;
while (true)
{
try {
raster.GetPropAndValues(propertyIndex, out property, out value);
if ((!"NoData".Equals(value)) &&
((includeFields == null) || includeFields.Contains(property)))
{
result.Add(property, value);
}
propertyIndex += 1;
} catch {
break;
}
}
continue;
}
else if (row != null)
{
IFields fields = row.Row.Fields;
for (int k = 0; k < fields.FieldCount; k += 1)
{
string fieldName = fields.get_Field(k).Name;
if ((includeFields == null) ? (!result.ContainsKey(fieldName)) : includeFields.Contains(fieldName))
{
result.Add(fieldName, row.Row.get_Value(k));
}
}
}
}
break;
}
}
return(result);
}
