/// <summary>
/// CreateFeatures - make ESRI features based on text
/// </summary>
/// <param name="layername">layer to add data to</param>
/// <returns></returns>
internal bool CreateFeatures(string layername)
{
bool result = true;
try
{
ESRI.ArcGIS.Carto.IFeatureLayer2 featlayer = code.Layers.getFeatureLayerByName("MyLines");
if (featlayer != null)
{
ESRI.ArcGIS.Geodatabase.IFeatureBuffer newFeatBuff = featlayer.FeatureClass.CreateFeatureBuffer();
ESRI.ArcGIS.Geodatabase.IFeatureCursor featureCursor = featlayer.FeatureClass.Insert(true);
foreach (TextGeomItem item in this.TextGeometries)
{
// // ID = unique id for gis line feature
newFeatBuff.set_Value(featlayer.FeatureClass.FindField("LineID"), Guid.NewGuid().ToString("B"));
newFeatBuff.set_Value(featlayer.FeatureClass.FindField("LETTER"), item.Text);
newFeatBuff.Shape = item.Geometry;
featureCursor.InsertFeature(newFeatBuff);
}
featureCursor.Flush();
System.Runtime.InteropServices.Marshal.ReleaseComObject(featureCursor);
}
return(result);
}
catch (System.Exception ex)
{
return(false);
}
}
/// <summary>
/// 合并要素图形范围
/// </summary>
/// <param name="pFeatureclass">要合并的要素类</param>
/// <param name="filter">过滤条件</param>
/// <returns></returns>
public static IGeometry UnionFeature(ESRI.ArcGIS.Geodatabase.IFeatureClass pFeatureclass, string filter)
{
IGeometry geo = null;
using (ComReleaser comReleaser = new ComReleaser())
{
List <IGeometry> geoLst = new List <IGeometry>();
ESRI.ArcGIS.Geodatabase.IGeoDataset geoDataset = pFeatureclass as ESRI.ArcGIS.Geodatabase.IGeoDataset;
ESRI.ArcGIS.Geodatabase.IFeatureCursor featureCursor = pFeatureclass.Search(new ESRI.ArcGIS.Geodatabase.QueryFilter {
WhereClause = filter
}, false);
ESRI.ArcGIS.Geodatabase.IFeature pFeature = featureCursor.NextFeature();
while (pFeature != null)
{
geoLst.Add(pFeature.ShapeCopy);
if (geoLst.Count == 50)
{
geo = UnionGeometry(geoLst, geoDataset.SpatialReference);
geoLst.Clear();
geoLst.Add(geo);
}
comReleaser.ManageLifetime(pFeature);
pFeature = featureCursor.NextFeature();
}
if (geoLst.Count == 1)
{
geo = geoLst[0];
}
if (geoLst.Count > 1)
{
geo = UnionGeometry(geoLst, geoDataset.SpatialReference);
}
IZAware ipZAware = geo as IZAware;
if (ipZAware.ZAware == true)
{
ipZAware.ZAware = false;
}
comReleaser.ManageLifetime(featureCursor);
System.Runtime.InteropServices.Marshal.ReleaseComObject(featureCursor);
}
return(geo);
}
private DataTable SpatialSearch(ESRI.ArcGIS.Geodatabase.IFeatureClass pFtClass, string pWhereClause, IGeometry pGeometry, ESRI.ArcGIS.Geodatabase.esriSpatialRelEnum pSpRel)
{
//定义空间查询过滤器对象
ESRI.ArcGIS.Geodatabase.ISpatialFilter pSpatialFilter = new ESRI.ArcGIS.Geodatabase.SpatialFilterClass();
//设置sql查询语句
pSpatialFilter.WhereClause = pWhereClause;
//设置查询范围
pSpatialFilter.Geometry = pGeometry;
//给定范围与查询对象的空间关系
pSpatialFilter.SpatialRel = pSpRel;
axMapControl1.Map.ClearSelection(); //清除上次查询结果
//查询结果以游标的形式返回(下面与属性查询一样)
ESRI.ArcGIS.Geodatabase.IFeatureCursor pFtCursor = pFtClass.Search(pSpatialFilter, false);
ESRI.ArcGIS.Geodatabase.IFeature pFt = pFtCursor.NextFeature();
DataTable DT = new DataTable();
for (int i = 0; i < pFtCursor.Fields.FieldCount; i++)
{
DataColumn dc = new DataColumn(pFtCursor.Fields.get_Field(i).Name,
System.Type.GetType(ParseFieldType((pFtCursor.Fields.get_Field(i).Type))));
DT.Columns.Add(dc);
}
while (pFt != null)
{
axMapControl1.Map.SelectFeature(pLayer, pFt); //选择要素
DataRow dr = DT.NewRow();
for (int i = 0; i < pFt.Fields.FieldCount; i++)
{
dr[i] = pFt.get_Value(i);
}
DT.Rows.Add(dr);
pFt = pFtCursor.NextFeature();
}
return(DT);
}
public double CaculateLandIndex(ESRI.ArcGIS.Geodatabase.IFeatureCursor pFeatureCursor, BaseData basedata)
{
throw new NotImplementedException();
}
public List <double> CaculateClassIndex(ESRI.ArcGIS.Geodatabase.IFeatureCursor pFeatureCursor, BaseData basedata)
{
throw new NotImplementedException();
}
