GeoTransform.hh

Go to the documentation of this file.

#ifndef _GEO_TRANSFHH_
#define _GEO_TRANSFHH_

#include <openmodeller/os_specific.hh>
#include <openmodeller/om_defs.hh>
#include <string>

class OGRCoordinateTransformation;


/****************************************************************/
/******************** Geographic Transformation *****************/

/****************/
class dllexp GeoTransform
{
public:

  // 'dst' and 'src' must follow the WKT (Well Known Text) format.
  //
  // TODO: expand to use EPSG, ESRI or Proj4 formats.
  //
  GeoTransform();
  GeoTransform( const std::string& in, const std::string& out );
  ~GeoTransform();

  void change( const std::string& in, const std::string& out );
  void change();

  // From 'out' to 'in'.
  int transfIn( double *x, double *y ) const;
  int transfIn( double *x, double *y, double x0, double y0 ) const;

  // From 'in' to 'out'.
  int transfOut( double *x, double *y ) const;
  int transfOut( double *x, double *y, double x0, double y0 ) const;

  // Default coordinate system.
  static char const * getDefaultCS();

  // Compare two coordinate system strings (WKT).
  static bool compareCoordSystemStrings(char const * s1, char const * s2);

private:

  bool identity;

  OGRCoordinateTransformation *f_ctin;
  OGRCoordinateTransformation *f_ctout;

  // Disable copying.
  GeoTransform( const GeoTransform& );
  GeoTransform& operator=( const GeoTransform& );

};



#endif