private ISpatialReference GetSpatialReference(int xyCoordinateSystem)
{
const bool IsHighPrecision = true;
ISpatialReference spatialReference;
ISpatialReferenceFactory3 spatialReferenceFactory = new SpatialReferenceEnvironmentClass();
spatialReference = spatialReferenceFactory.CreateSpatialReference(xyCoordinateSystem);
IControlPrecision2 controlPrecision = spatialReference as IControlPrecision2;
controlPrecision.IsHighPrecision = IsHighPrecision;
ISpatialReferenceResolution spatialReferenceResolution = spatialReference as ISpatialReferenceResolution;
spatialReferenceResolution.ConstructFromHorizon();
spatialReferenceResolution.SetDefaultXYResolution();
spatialReferenceResolution.SetDefaultZResolution();
spatialReferenceResolution.SetDefaultMResolution();
ISpatialReferenceTolerance spatialReferenceTolerance = spatialReference as ISpatialReferenceTolerance;
spatialReferenceTolerance.SetDefaultXYTolerance();
spatialReferenceTolerance.SetDefaultZTolerance();
spatialReferenceTolerance.SetDefaultMTolerance();
return(spatialReference);
}
/// <summary>
/// 创建要素集 20110919 xisheng
/// </summary>
/// <param name="feaworkspace">指定工作空间</param>
/// <param name="datasetname">指定要素集名称</param>
/// <param name="PrjPath">空间参考</param>
/// <returns></returns>
private static IFeatureDataset CreateFeatureDataset(IFeatureWorkspace feaworkspace, string datasetname, string PrjPath)
{
try
{
string spatialPath = PrjPath;
ISpatialReferenceFactory pSpaReferenceFac = new SpatialReferenceEnvironmentClass(); //空间参考工厂
ISpatialReference pSpatialReference = null; //用来获得空间参考
if (File.Exists(spatialPath))
{
pSpatialReference = pSpaReferenceFac.CreateESRISpatialReferenceFromPRJFile(spatialPath);
}
if (pSpatialReference == null)
{
pSpatialReference = new UnknownCoordinateSystemClass();
}
//设置默认的Resolution
ISpatialReferenceResolution pSpatiaprefRes = pSpatialReference as ISpatialReferenceResolution;
pSpatiaprefRes.ConstructFromHorizon();//Defines the XY resolution and domain extent of this spatial reference based on the extent of its horizon
pSpatiaprefRes.SetDefaultXYResolution();
pSpatiaprefRes.SetDefaultZResolution();
pSpatiaprefRes.SetDefaultMResolution();
//设置默认的Tolerence
ISpatialReferenceTolerance pSpatialrefTole = pSpatiaprefRes as ISpatialReferenceTolerance;
pSpatialrefTole.SetDefaultXYTolerance();
pSpatialrefTole.SetDefaultZTolerance();
pSpatialrefTole.SetDefaultMTolerance();
//创建数据集
IFeatureDataset pFeatureDataset = null;//定义数据集用来装载要素类
pFeatureDataset = feaworkspace.CreateFeatureDataset(datasetname, pSpatialReference);
return(pFeatureDataset);
}
catch (Exception e)
{
//*******************************************************************
//guozheng added
if (ModData.SysLog != null)
{
ModData.SysLog.Write(e, null, DateTime.Now);
}
else
{
ModData.SysLog = new SysCommon.Log.clsWriteSystemFunctionLog();
ModData.SysLog.Write(e, null, DateTime.Now);
}
//********************************************************************
return(null);
}
}
