ossimFgdcXmlDoc.h

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//----------------------------------------------------------------------------
//
// License:  MIT
// 
// See LICENSE.txt file in the top level directory for more details.
//
// Author:  Mingjie Su
//
// Description: Utility class to encapsulate parsing projection info in the xml file.
// 
//----------------------------------------------------------------------------
// $Id: ossimFgdcXmlDoc.h 2063 2011-01-19 19:38:12Z ming.su $
#ifndef ossimFgdcXmlDoc_HEADER
#define ossimFgdcXmlDoc_HEADER 1

#include <ossim/base/ossimConstants.h>
#include <ossim/base/ossimFilename.h>
#include <ossim/base/ossimRefPtr.h>
#include <ossim/base/ossimString.h>
#include <ossim/base/ossimXmlDocument.h>
#include <ossim/projection/ossimProjection.h>

class ossimDatum;
class ossimDrect;

class OSSIMDLLEXPORT ossimFgdcXmlDoc
{
public:
   ossimFgdcXmlDoc();
   
   ~ossimFgdcXmlDoc();

   bool open(const ossimFilename& xmlFileName);

   bool isOpen() const;

   void close();

   ossimRefPtr<ossimProjection> getProjection();

   ossimUnitType getUnitType() const;

   bool getGeoCsn(ossimString& s) const;

   bool getProjCsn(ossimString& s) const;

   bool getAltitudeDistantUnits(ossimString& s) const;

   bool getGridCoordinateSystem(ossimString& s) const;

   ossimRefPtr<ossimProjection> getGridCoordSysProjection();

   bool getHorizontalDatum(ossimString& s) const;

   bool getPlanarDistantUnits(ossimString& s) const;

   bool getUtmFalseNorthing(ossimString& s) const;
   
   bool getUtmZone(ossimString& s) const;

   ossim_uint32 getNumberOfBands();

   bool getPath(const ossimString& path, ossimString& s) const;

   bool getImageSize(ossimIpt& size) const;

private:

   bool getXRes(ossim_float64& v) const;
   
   bool getYRes(ossim_float64& v) const;

   void getBoundingBox(ossimDrect& rect) const;

   bool getPath(const ossimString& path, ossim_float64& v) const;

   const ossimDatum* createOssimDatum(const ossimString& s) const;
   
   ossimFilename                 m_xmlFilename;
   ossimRefPtr<ossimXmlDocument> m_xmlDocument;
   ossimRefPtr<ossimProjection>  m_projection;
   mutable bool                  m_boundInDegree;
};

#endif /* matches: #ifndef ossimFgdcXmlDoc */