otbDEMHandler.h

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/*
 * Copyright (C) 2005-2020 Centre National d'Etudes Spatiales (CNES)
 *
 * This file is part of Orfeo Toolbox
 *
 *     https://www.orfeo-toolbox.org/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef otbDEMHandler_h
#define otbDEMHandler_h

#include <cstdio>

#include "itkIndent.h"
#include "itkObject.h"
#include "itkObjectFactory.h"
#include "itkPoint.h"

#include "OTBOSSIMAdaptersExport.h"
#include <string>

class ossimElevManager;

namespace otb
{
class OTBOSSIMAdapters_EXPORT DEMHandler : public itk::Object
{
public:
  typedef DEMHandler                    Self;
  typedef itk::Object                   Superclass;
  typedef itk::SmartPointer<Self>       Pointer;
  typedef itk::SmartPointer<const Self> ConstPointer;

  typedef itk::Point<double, 2> PointType;

  static Pointer Instance();

  itkTypeMacro(DEMHandler, Object);

  virtual void OpenDEMDirectory(const char* DEMDirectory);
  virtual void OpenDEMDirectory(const std::string& DEMDirectory);

  virtual bool IsValidDEMDirectory(const char* DEMDirectory);

  virtual bool OpenGeoidFile(const char* geoidFile);

  virtual bool OpenGeoidFile(const std::string& geoidFile);

  virtual double GetHeightAboveMSL(double lon, double lat) const;
  virtual double GetHeightAboveMSL(const PointType& geoPoint) const;

  virtual double GetHeightAboveEllipsoid(double lon, double lat) const;
  virtual double GetHeightAboveEllipsoid(const PointType& geoPoint) const;

  virtual void SetDefaultHeightAboveEllipsoid(double h);

  double GetDefaultHeightAboveEllipsoid() const;

  unsigned int GetDEMCount() const;

  std::string GetDEMDirectory(unsigned int idx = 0) const;

  std::string GetGeoidFile() const;

  void ClearDEMs();

protected:
  DEMHandler();
  ~DEMHandler() override
  {
  }

  void PrintSelf(std::ostream& os, itk::Indent indent) const override;

  // Ossim does not allow retrieving the geoid file path
  // We therefore must keep it on our side
  std::string m_GeoidFile;

  // Ossim does not allow retrieving the default height above
  // ellipsoid We therefore must keep it on our side
  double m_DefaultHeightAboveEllipsoid;

  static Pointer m_Singleton;
};

} // namespace otb

#endif