landr/RasterDataset.hpp

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/*

  This file is part of OpenFLUID software
  Copyright(c) 2007, INRA - Montpellier SupAgro


 == GNU General Public License Usage ==

  OpenFLUID is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  OpenFLUID is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with OpenFLUID. If not, see <http://www.gnu.org/licenses/>.


 == Other Usage ==

  Other Usage means a use of OpenFLUID that is inconsistent with the GPL
  license, and requires a written agreement between You and INRA.
  Licensees for Other Usage of OpenFLUID may use this file in accordance
  with the terms contained in the written agreement between You and INRA.
  
*/

/**
 \file RasterDataset.hpp
 \brief Header of ...

 \author Aline LIBRES <aline.libres@gmail.com>
 */

#ifndef RASTERDATASET_HPP_
#define RASTERDATASET_HPP_

#include <map>
#include "gdal_priv.h"
#include "cpl_conv.h" // for CPLMalloc()
#include <openfluid/dllexport.hpp>

namespace geos { namespace geom {
class Coordinate;
} }
namespace openfluid {

namespace core {
class GeoRasterValue;
}

namespace landr {

class VectorDataset;
/**
 @brief Interface for managing Raster Data format.
 *
 */
class DLLEXPORT RasterDataset
{
  private:

    /**
     @brief The GDALDataset associated to this RasterDataset.
     */
    GDALDataset* mp_Dataset;

    /**
     @brief The affine transformation coefficients of this RasterDataset.
     */
    double* mp_GeoTransform;

    /**
     @brief A map of the related VectorDataset to this RasterDataset.
     */
    std::map<unsigned int, openfluid::landr::VectorDataset*> mp_PolygonizedByRasterBandIndex;

    /**
     @brief Computes the affine transformation coefficients of this RasterDataset.
     */
    void computeGeoTransform();

  public:

    /**
     @brief Create a virtual (in memory) copy of Value GDALDataset
     @param Value The GeoRasterValue to copy
     @throw openfluid::base::OFException if fails
     */
    RasterDataset(openfluid::core::GeoRasterValue& Value);

    /**
     @brief Copy constructor
     @throw openfluid::base::OFException if fails
     */
    RasterDataset(const RasterDataset& Other);

    /**
     @brief Delete the virtual GDALDataset
     */
    ~RasterDataset();

    /**
     @brief Returns the GDALDataset related to this RasterDataset.
     */
    GDALDataset* getDataset();

    /**
     @brief Returns the const GDALDataset related to this RasterDataset.
     */
    GDALDataset* getDataset() const;

    /**
     @brief Gets the RasterBand indexed with RasterBandIndex of the dataset.
     @details Is owned by its dataset, should never be destroyed with the C++ delete operator.
     @param RasterBandIndex The rasterBand to get, default 1
     */
    GDALRasterBand* getRasterBand(unsigned int RasterBandIndex = 1);

    /**
     @brief Returns the column and line index of a pixel from the coordinate of the pixel.
     @param Coo A geos::geom::Coordinate.
     @return A pair of the column and line index of the pixel in this RasterDataset.
     */
    std::pair<int, int> getPixelFromCoordinate(geos::geom::Coordinate Coo);

    /**
     @brief Returns the geos::geom::Coordinate origin of this RasterDataset.
     */
    geos::geom::Coordinate* getOrigin();

    /**
     @brief Returns the pixel width of this RasterDataset.
     */
    double getPixelWidth();

    /**
     @brief Returns the pixel height of this RasterDataset.
     */
    double getPixelHeight();

    /**
     @brief Returns a vector of the pixel values of a line of this RasterDataset.
     @param LineIndex The line index to get the pixel values.
     @param RasterBandIndex The raster band index (default is 1).
     @return A vector of pixel values.
     */
    std::vector<float> getValuesOfLine(int LineIndex,
                                       unsigned int RasterBandIndex = 1);
    /**
     @brief Returns a vector of the pixel values of a column of this RasterDataset.
     @param ColIndex The column index to get the pixel values.
     @param RasterBandIndex The raster band index (default is 1).
     @return A vector of pixel values.
     */
    std::vector<float> getValuesOfColumn(int ColIndex,
                                         unsigned int RasterBandIndex = 1);

    /**
     @brief Returns the pixel value with column and line index.
     @param ColIndex The column index.
     @param LineIndex The line index.
     @param RasterBandIndex The raster band index (default is 1).
     @return The pixel value.
     */
    float getValueOfPixel(int ColIndex,
                          int LineIndex,
                          unsigned int RasterBandIndex = 1);

    /**
     @brief Returns the pixel value with coordinate.
     @param Coo The geos::geom::Coordinate.
     @param RasterBandIndex The raster band index (default is 1).
     @return The pixel value.
     */
    float getValueOfCoordinate(geos::geom::Coordinate Coo,
                               unsigned int RasterBandIndex = 1);

    /**
     @brief Creates a new VectorDataset with polygons for all connected regions of pixels in the raster sharing a common pixel value.
     @details Use openfluid::landr::VectorDataset::copyToDisk() to keep this vectorDataset on disk
     @param FileName The name of the new VectorDataset.
     @param FieldName The name of the field to be created for storing the pixel value, limited to 10 characters (or will be truncated).
     Default is set to "PixelVal". Type of field is OFTReal .
     @param RasterBandIndex The raster band index (default is 1).
     @return The newly created VectorDataset.
     */
    openfluid::landr::VectorDataset* polygonize(const std::string& FileName,
                                                std::string FieldName = "",
                                                unsigned int RasterBandIndex = 1);

    static std::string getDefaultPolygonizedFieldName();
};

} } // namespaces openfluid, landr

#endif /* RASTERDATASET_HPP_ */