Ocean* Application Development Framework - Ocean - Schlumberger

Coordinate Systems
A converter is created using the coordinate service based on the source and target
coordinate systems you specify or just one coordinate system if you are converting
between spherical and projected coordinates.
ICoordinateService cs = CoreSystem.GetService();
Point3 pt = ...;
// the source and target coordinate systems
ICoordinateReferenceSystem csSource;
ICoordinateReferenceSystem csTarget;
csSource = cs.GetCoordSys("MENTOR: UTM84-11N");
csTarget = cs.GetCoordSys("MENTOR: UTM84-12N");
// Create a converter between two coordinate reference systems.
ICoordinateOperation Converter;
ReturnStatus status = cs.CreateOperation( csSource,
csTarget,
PrePostUnitConversions.None,
out Converter);
// Make sure converter created and convert a point.
if (!status.IsOk())
{
CoreLogger.Error(“Error creating coordinate converter.”);
return;
}
// Create a converter to go from spherical to projected.
ICoordinateOperation SphereToProject;
status = cs.CreateOperationFromReference(csSource
PrePostUnitConvertion.None,
out SphereToProject);
// Make sure converter created and convert a point.
if (!status.IsOk())
{
CoreLogger.Error(“Error creating spherical “ +
“to projected converter.”);
}
Once you have an ICoordinateOperation, you can convert Point3 references
using any of its overloaded Convert methods:
ReturnStatus Convert( ref Point3 );
ReturnStatus Convert( ref Point3[] );
You should notice from the method signatures above that all of the Convert
methods return a ReturnStatus to indicate success or error/warning conditions.
Please see “Return Status” on page 4-188 for more details.
Schlumberger Private - Customer Use
Ocean Services 4-187