How to apply Coordinate system Transformation using API ?

By Partha Sarkar

Coordinate transformation is converting a coordinate value in one coordinate system into its equivalent in another coordinate system.

 

Here is a code snippet which demonstrates how to apply Coordinate system Transformation :

string mapSRS = AcMapMap.GetCurrentMap().GetMapSRS();

// create MgCoordinateSystemFactory

 

MgCoordinateSystemFactory coordSysFactory = new MgCoordinateSystemFactory();

MgCoordinateSystem coordSys = coordSysFactory.Create(mapSRS);

MgCoordinateSystem wgs84Sys = coordSysFactory.Create("LL84");

 

MgCoordinateSystemTransform transform = null;

transform = coordSysFactory.GetTransform(wgs84Sys, coordSys);

MgCoordinate coord = null;

 

if (transform != null && !double.IsNaN(pnt.Z))

  coord = transform.Transform(pnt.Z, pnt.Y, pnt.Z);

else

  coord = transform.Transform(pnt.X, pnt.Y);