/// <summary>
/// 判断鼠标点击处有无巷道要素
/// </summary>
/// <param name="m_hookHelper"></param>
/// <param name="pMousePoint">鼠标点</param>
/// <param name="pFeatureLayer">导线点图层</param>
/// <param name="theFeature">返回离鼠标最近的导线点</param>
public void TestExistPointFeature(IHookHelper m_hookHelper, IPoint pMousePoint, IFeatureLayer pFeatureLayer, ref IFeature theFeature)
{
ArrayList pSelected = new ArrayList();
IFeatureClass pFeatureClass;
ISelectionEnvironment pSelectionEnvironment;
IFeature pFeature = null;
IGeometry pGeometry;
ITopologicalOperator pTopolagicalOperator;
double dLength;
IEnvelope pSrchEnv;
pSelectionEnvironment = new SelectionEnvironmentClass();
dLength = pSelectionEnvironment.SearchTolerance;
pGeometry = pMousePoint;
dLength = DataEditCommon.ConvertPixelDistanceToMapDistance(m_hookHelper.ActiveView, dLength);
pSrchEnv = pMousePoint.Envelope;
pSrchEnv.Width = dLength;
pSrchEnv.Height = dLength;
pSrchEnv.CenterAt(pMousePoint);
pTopolagicalOperator = (ITopologicalOperator)pGeometry;
IGeometry pBuffer = pTopolagicalOperator.Buffer(dLength);
pGeometry = pBuffer;
IFeature pFeat = null;
IMap pMap = m_hookHelper.FocusMap;
pFeatureClass = pFeatureLayer.FeatureClass;
IIdentify2 pID = pFeatureLayer as IIdentify2;
//IArray pArray = pID.Identify(pSrchEnv, null);
IArray pArray = pID.Identify(pGeometry, null);
IFeatureIdentifyObj pFeatIdObj;
IRowIdentifyObject pRowObj;
if (pArray != null)
{
for (int j = 0; j < pArray.Count; j++)
{
if (pArray.Element[j] is IFeatureIdentifyObj)
{
pFeatIdObj = pArray.Element[j] as IFeatureIdentifyObj;
pRowObj = pFeatIdObj as IRowIdentifyObject;
pFeature = pRowObj.Row as IFeature;
pSelected.Add(pFeature);
}
}
pArray.RemoveAll();
}
theFeature = pFeature;
return;
//GetClosestFeatureInCollection(m_hookHelper, dLength, pSelected, pMousePoint, ref pFeat);
//if (pFeat != null)
// theFeature = pFeat;
//else
// theFeature = null;
}
