/* Copyright 2010 ESRI
* 
* All rights reserved under the copyright laws of the United States
* and applicable international laws, treaties, and conventions.
* 
* You may freely redistribute and use this sample code, with or
* without modification, provided you include the original copyright
* notice and use restrictions.
* 
* See the use restrictions.
* 
*/
package arcgissamples.geometry;

import com.esri.arcgis.geometry.CoordinateFrameTransformation;
import com.esri.arcgis.geometry.IGeoTransformationOperationSet;
import com.esri.arcgis.geometry.IGeographicCoordinateSystem;
import com.esri.arcgis.geometry.IProjectedCoordinateSystem;
import com.esri.arcgis.geometry.SpatialReferenceEnvironment;
import com.esri.arcgis.geometry.esriSRProjCSType;
import com.esri.arcgis.geometry.esriTransformDirection;
import com.esri.arcgis.system.AoInitialize;
import com.esri.arcgis.system.EngineInitializer;
import com.esri.arcgis.system.esriLicenseProductCode;
import com.esri.arcgis.system.esriLicenseStatus;

public class CreateCustomGeographicXformation
{
  public CreateCustomGeographicXformation()
  {
    
  }
  
  public static void main(String[] args)
  {
    try
    {
      EngineInitializer.initializeEngine();
      
      AoInitialize aoInit = new AoInitialize();      
      initializeArcGISLicenses(aoInit);
      
      SpatialReferenceEnvironment sre = new SpatialReferenceEnvironment();

      // The key to understanding this is that all projected coordinate system IDs are
      // found in the esriSRProjCSType static class...
      IProjectedCoordinateSystem proj1 = sre.createProjectedCoordinateSystem(esriSRProjCSType.esriSRProjCS_PeruCentral);
      IProjectedCoordinateSystem proj2 = sre.createProjectedCoordinateSystem(esriSRProjCSType.esriSRProjCS_WGS1984UTM_38N);

      // Create a coordinateframetransformation
      CoordinateFrameTransformation cft = new CoordinateFrameTransformation();
      cft.putParameters(1.234, -2.345, 658.3, 4.3829, -2.48591, 2.18943, 2.48585);
      cft.setName("Custom Geotrans");

      // Retrieve the geographic coordinate systems from the two projected coordinate systems
      IGeographicCoordinateSystem gcs1 = proj1.getGeographicCoordinateSystem();
      IGeographicCoordinateSystem gcs2 = proj2.getGeographicCoordinateSystem();

      cft.putSpatialReferences(gcs1, gcs2);

      /*
       * The SpatialReferenceEnvironment has a GeoTransformationOperationSet that you
       * can use to maintain a list of active geographic transformations.
       * 
       * Note: Once you add a geographic transformation to the operation set, FeatureDataConverter can access the
       * transformations. Add the transformation to the operation set
       */

      IGeoTransformationOperationSet set = sre.getGeoTransformationDefaults();

      // Always add a geographic transformation in both directions.
      set.set(esriTransformDirection.esriTransformForward, cft);
      set.set(esriTransformDirection.esriTransformReverse, cft);

      // Done. There is nothing of interest produced from this program, other than
      // The demonstration of a coding practice
      System.out.println("Done!");

      aoInit.shutdown();

    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }
  
  /**
   * Initializes the lowest available ArcGIS License
   */
  private static void initializeArcGISLicenses(AoInitialize aoInit)
  {
    try
    {
      if (aoInit.isProductCodeAvailable(esriLicenseProductCode.esriLicenseProductCodeEngine) == esriLicenseStatus.esriLicenseAvailable)
      {
        aoInit.initialize(esriLicenseProductCode.esriLicenseProductCodeEngine);
      }
      else if (aoInit.isProductCodeAvailable(esriLicenseProductCode.esriLicenseProductCodeArcView) == esriLicenseStatus.esriLicenseAvailable)
      {
        aoInit.initialize(esriLicenseProductCode.esriLicenseProductCodeArcView);
      }
      else
      {
        System.err.println("Could not initialize an Engine or ArcView license. Exiting application.");
        System.exit(-1);
      }
    }
    catch (Exception e)
    {
      e.printStackTrace();
    }
  }  
}