92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2017 Artem Pavlenko
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#ifndef MAPNIK_PROJECTION_HPP
|
|
#define MAPNIK_PROJECTION_HPP
|
|
|
|
// mapnik
|
|
#include <mapnik/config.hpp>
|
|
#include <mapnik/well_known_srs.hpp>
|
|
|
|
#pragma GCC diagnostic push
|
|
#include <mapnik/warning_ignore.hpp>
|
|
#include <boost/optional.hpp>
|
|
#pragma GCC diagnostic pop
|
|
|
|
// stl
|
|
#include <string>
|
|
#include <stdexcept>
|
|
|
|
namespace mapnik {
|
|
|
|
class proj_init_error : public std::runtime_error
|
|
{
|
|
public:
|
|
proj_init_error(std::string const& params)
|
|
: std::runtime_error("failed to initialize projection with: '" + params + "'") {}
|
|
};
|
|
|
|
class MAPNIK_DECL projection
|
|
{
|
|
friend class proj_transform;
|
|
public:
|
|
|
|
projection(std::string const& params,
|
|
bool defer_proj_init = false);
|
|
projection(projection const& rhs);
|
|
~projection();
|
|
|
|
projection& operator=(projection const& rhs);
|
|
bool operator==(const projection& other) const;
|
|
bool operator!=(const projection& other) const;
|
|
bool is_initialized() const;
|
|
bool is_geographic() const;
|
|
boost::optional<well_known_srs_e> well_known() const;
|
|
std::string const& params() const;
|
|
void forward(double & x, double & y) const;
|
|
void inverse(double & x,double & y) const;
|
|
std::string expanded() const;
|
|
void init_proj4() const;
|
|
|
|
private:
|
|
void swap (projection& rhs);
|
|
|
|
private:
|
|
std::string params_;
|
|
bool defer_proj_init_;
|
|
mutable bool is_geographic_;
|
|
mutable void * proj_;
|
|
mutable void * proj_ctx_;
|
|
};
|
|
|
|
template <typename charT, typename traits>
|
|
std::basic_ostream<charT, traits> &
|
|
operator << ( std::basic_ostream<charT, traits> & s, mapnik::projection const& p )
|
|
{
|
|
s << "projection(\"" << p.params() << "\")";
|
|
return s;
|
|
}
|
|
|
|
|
|
}
|
|
|
|
#endif // MAPNIK_PROJECTION_HPP
|