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/******************************************************************************
* $Id: lasspatialreference.hpp 1091 2009-03-10 20:17:35Z hobu $
*
* Project: libLAS - http://liblas.org - A BSD library for LAS format data.
* Purpose: LAS Spatial Reference class
* Author: Howard Butler, hobu.inc@gmail.com
*
******************************************************************************
* Copyright (c) 2009, Howard Butler
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following
* conditions are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided
* with the distribution.
* * Neither the name of the Martin Isenburg or Iowa Department
* of Natural Resources nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
****************************************************************************/
#ifndef LIBLAS_LASSPATIALREFERENCE_HPP_INCLUDED
#define LIBLAS_LASSPATIALREFERENCE_HPP_INCLUDED
#include <liblas/detail/fwd.hpp>
#include <liblas/detail/private_utility.hpp>
#include <liblas/variablerecord.hpp>
#include <liblas/exception.hpp>
#include <liblas/capi/las_config.h>
#include <liblas/export.hpp>
#include <liblas/external/property_tree/ptree.hpp>
// std
#include <stdexcept> // std::out_of_range
#include <cstdlib> // std::size_t
#include <string>
// Fake out the compiler if we don't have libgeotiff includes already
#if !defined(__geotiff_h_)
typedef struct GTIFS *GTIF;
#endif
#if !defined(__geo_simpletags_h_)
typedef struct ST_TIFFS *ST_TIFF;
#endif
namespace liblas {
/// Spatial Reference System container for libLAS
class LAS_DLL SpatialReference
{
public:
enum WKTModeFlag
{
eHorizontalOnly = 1,
eCompoundOK = 2
};
enum GeoVLRType
{
eGeoTIFF = 1,
eOGRWKT = 2
};
/// Default constructor.
SpatialReference();
/// Destructor.
/// If libgeotiff is enabled, deallocates libtiff and libgeotiff objects used internally.
~SpatialReference();
/// Constructor creating SpatialReference instance from given Variable-Length Record.
SpatialReference(std::vector<VariableRecord> const& vlrs);
/// Copy constryctor.
SpatialReference(SpatialReference const& other);
/// Assignment operator.
SpatialReference& operator=(SpatialReference const& rhs);
bool operator==(const SpatialReference& other) const;
bool operator!=(const SpatialReference& other) const { return !(*this == other); }
/// Returns a pointer to the internal GTIF*. Only available if
/// you have libgeotiff linked in.
const GTIF* GetGTIF();
void SetGTIF(GTIF* pgtiff, ST_TIFF* ptiff);
/// Returns the OGC WKT describing Spatial Reference System.
/// If GDAL is linked, it uses GDAL's operations and methods to determine
/// the WKT. If GDAL is not linked, no WKT is returned.
/// \param mode_flag May be eHorizontalOnly indicating the WKT will not
/// include vertical coordinate system info (the default), or
/// eCompoundOK indicating the the returned WKT may be a compound
/// coordinate system if there is vertical coordinate system info
/// available.
std::string GetWKT(WKTModeFlag mode_flag = eHorizontalOnly) const;
std::string GetWKT(WKTModeFlag mode_flag, bool pretty) const;
/// Sets the SRS using GDAL's OGC WKT. If GDAL is not linked, this
/// operation has no effect.
/// \param v - a string containing the WKT string.
void SetWKT(std::string const& v);
/// Sets the vertical coordinate system using geotiff key values.
/// This operation should normally be done after setting the horizontal
/// portion of the coordinate system with something like SetWKT(),
/// SetProj4(), SetGTIF() or SetFromUserInput()
/// \param verticalCSType - An EPSG vertical coordinate system code,
/// normally in the range 5600 to 5799, or -1 if one is not available.
/// \param citation - a textual description of the vertical coordinate
/// system or an empty string if nothing is available.
/// \param verticalDatum - the EPSG vertical datum code, often in the
/// range 5100 to 5299 - implied by verticalCSType if that is provided, or
/// -1 if no value is available.
/// \param verticalUnits - the EPSG vertical units code, often 9001 for Metre.
void SetVerticalCS(boost::int32_t verticalCSType,
std::string const& citation = std::string(0),
boost::int32_t verticalDatum = -1,
boost::int32_t verticalUnits = 9001);
/// Sets the SRS using GDAL's SetFromUserInput function. If GDAL is not linked, this
/// operation has no effect.
/// \param v - a string containing the definition (filename, proj4, wkt, etc).
void SetFromUserInput(std::string const& v);
/// Returns the Proj.4 string describing the Spatial Reference System.
/// If GDAL is linked, it uses GDAL's operations and methods to determine
/// the Proj.4 string -- otherwise, if libgeotiff is linked, it uses
/// that. Note that GDAL's operations are much more mature and
/// support more coordinate systems and descriptions.
std::string GetProj4() const;
/// Sets the Proj.4 string describing the Spatial Reference System.
/// If GDAL is linked, it uses GDAL's operations and methods to determine
/// the Proj.4 string -- otherwise, if libgeotiff is linked, it uses
/// that. Note that GDAL's operations are much more mature and
/// support more coordinate systems and descriptions.
/// \param v - a string containing the Proj.4 string.
void SetProj4(std::string const& v);
/// Set the LASVLRs for the SpatialReference. SetVLRs will only copy
/// VLR records that pertain to the GeoTIFF keys, and extraneous
/// VLR records will not be copied.
/// \param vlrs - A list of VLRs that contains VLRs describing GeoTIFF keys
void SetVLRs(std::vector<VariableRecord> const& vlrs);
/// Add a VLR representing GeoTIFF keys to the SRS
void AddVLR(VariableRecord const& vlr);
/// Return a copy of the LASVLRs that SpatialReference maintains
std::vector<VariableRecord> GetVLRs() const;
void ClearVLRs( GeoVLRType eType );
liblas::property_tree::ptree GetPTree() const;
private:
// FIXME: Define as shared_ptr<GTIF> with custom deleter to get rid of bloated mem management, unsafe anyway --mloskot
GTIF* m_gtiff;
ST_TIFF* m_tiff;
std::string m_wkt;
std::vector<VariableRecord> m_vlrs;
bool IsGeoVLR(VariableRecord const& vlr) const;
std::string GetGTIFFText() const;
/// Reset the VLRs of the SpatialReference using the existing GTIF* and ST_TIF*
/// Until this method is called,
/// the SpatialReference will only contain a SRS description using the VLRs
/// that it was first instantiated with. SetWKT and SetProj4 can
/// be used to change the GTIF*
void ResetVLRs();
};
} // namespace liblas
LAS_DLL std::ostream& operator<<(std::ostream& ostr, const liblas::SpatialReference& srs);
LAS_C_START
#if defined(__geotiff_h_)
#if defined(GEO_NORMALIZE_H_INCLUDED)
char LAS_DLL * GTIFGetOGISDefn(GTIF*, GTIFDefn*);
#endif
int LAS_DLL GTIFSetFromOGISDefn(GTIF*, const char*);
void SetLinearUnitCitation(GTIF* psGTIF, char* pszLinearUOMName);
#if defined(_OGR_SRS_API_H_INCLUDED)
void SetGeogCSCitation(GTIF* psGTIF, OGRSpatialReference* poSRS, char* angUnitName, int nDatum, short nSpheroid);
#endif // defined _OGR_SRS_API_H_INCLUDED
#endif // defined __geotiff_h_
LAS_C_END
#endif // LIBLAS_LASSPATIALREFERENCE_HPP_INCLUDED
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