This document is archived and information here might be outdated.  Recommended version.

Convert Spatial Reference From Low To High Precision Snippet (ArcObjects .NET 10.4 SDK)

ArcObjects Library Reference

Convert Spatial Reference From Low To High Precision Snippet

[C#]

///<summary>Converts an existing low precision spatial reference and returns a new high precision spatial reference.</summary>
///  
///<param name="lowSpatialReference">An ISpatialReference interface that is the low spatial reference to be converted.</param>
///<param name="xyDoubler">A System.Int32 that is the amount of doubling (2^x) based on the input resolution; -1 produces a value close to the default resolution. Example: -1</param>
///<param name="mDoubler">A System.Int32 that determines doubling of m-resolution based on input m-resolution; the default is 0. Example: 0</param>
///<param name="zDoubler">A System.Int32 that determines doubling of z-resolution based on input z-resolution; default is 0. Example: 0</param>
///   
///<returns>An ISpatialReference interface that is the new high precision spatial reference.</returns>
///   
///<remarks></remarks>
public ESRI.ArcGIS.Geometry.ISpatialReference ConvertSpatialReferenceFromLowToHighPrecision(ESRI.ArcGIS.Geometry.ISpatialReference lowSpatialReference, System.Int32 xyDoubler, System.Int32 mDoubler, System.Int32 zDoubler)
{
  ESRI.ArcGIS.Geometry.IControlPrecision2 controlPrecision2=lowSpatialReference as ESRI.ArcGIS.Geometry.IControlPrecision2;  // Dynamic Cast
  if (!controlPrecision2.IsHighPrecision)
  {
    ESRI.ArcGIS.Geometry.ISpatialReferenceFactory3 spatialReferenceFactory3=new ESRI.ArcGIS.Geometry.SpatialReferenceEnvironmentClass();
    ESRI.ArcGIS.Geometry.ISpatialReference highSpatialReference=spatialReferenceFactory3.ConstructHighPrecisionSpatialReference(lowSpatialReference, xyDoubler, zDoubler, mDoubler);

    return highSpatialReference;
  }
  return null;
}

[Visual Basic .NET]

'''<summary>Converts an existing low precision spatial reference and returns a new high precision spatial reference.</summary>
'''  
'''<param name="lowSpatialReference">An ISpatialReference interface that is the low spatial reference to be converted.</param>
'''<param name="xyDoubler">A System.Int32 that is the amount of doubling (2^x) based on the input resolution; -1 produces a value close to the default resolution. Example: -1</param>
'''<param name="mDoubler">A System.Int32 that determines doubling of m-resolution based on input m-resolution; the default is 0. Example: 0</param>
'''<param name="zDoubler">A System.Int32 that determines doubling of z-resolution based on input z-resolution; default is 0. Example: 0</param>
'''   
'''<returns>An ISpatialReference interface that is the new high precision spatial reference.</returns>
'''   
'''<remarks></remarks>
Public Function ConvertSpatialReferenceFromLowToHighPrecision(ByVal lowSpatialReference As ESRI.ArcGIS.Geometry.ISpatialReference, ByVal xyDoubler As System.Int32, ByVal mDoubler As System.Int32, ByVal zDoubler As System.Int32) As ESRI.ArcGIS.Geometry.ISpatialReference

  Dim controlPrecision2 As ESRI.ArcGIS.Geometry.IControlPrecision2=CType(lowSpatialReference, ESRI.ArcGIS.Geometry.IControlPrecision2) ' Explicit Cast

  If Not controlPrecision2.IsHighPrecision Then

    Dim spatialReferenceFactory3 As ESRI.ArcGIS.Geometry.ISpatialReferenceFactory3=New ESRI.ArcGIS.Geometry.SpatialReferenceEnvironmentClass
    Dim highSpatialReference As ESRI.ArcGIS.Geometry.ISpatialReference=spatialReferenceFactory3.ConstructHighPrecisionSpatialReference(lowSpatialReference, xyDoubler, zDoubler, mDoubler)

    Return highSpatialReference

  End If

  Return Nothing

End Function