143 lines
4.5 KiB
C++
143 lines
4.5 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2009 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
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#include "boost_std_shared_shim.hpp"
|
|
|
|
// mapnik
|
|
#include <mapnik/proj_transform.hpp>
|
|
#include <boost/noncopyable.hpp>
|
|
|
|
// boost
|
|
#include <boost/python.hpp>
|
|
|
|
// stl
|
|
#include <stdexcept>
|
|
|
|
|
|
using mapnik::proj_transform;
|
|
using mapnik::projection;
|
|
|
|
struct proj_transform_pickle_suite : boost::python::pickle_suite
|
|
{
|
|
static boost::python::tuple
|
|
getinitargs(const proj_transform& p)
|
|
{
|
|
using namespace boost::python;
|
|
return boost::python::make_tuple(p.source(),p.dest());
|
|
}
|
|
};
|
|
|
|
namespace {
|
|
|
|
mapnik::coord2d forward_transform_c(mapnik::proj_transform& t, mapnik::coord2d const& c)
|
|
{
|
|
double x = c.x;
|
|
double y = c.y;
|
|
double z = 0.0;
|
|
if (!t.forward(x,y,z)) {
|
|
std::ostringstream s;
|
|
s << "Failed to forward project "
|
|
<< c << " from " << t.source().params() << " to: " << t.dest().params();
|
|
throw std::runtime_error(s.str());
|
|
}
|
|
return mapnik::coord2d(x,y);
|
|
}
|
|
|
|
mapnik::coord2d backward_transform_c(mapnik::proj_transform& t, mapnik::coord2d const& c)
|
|
{
|
|
double x = c.x;
|
|
double y = c.y;
|
|
double z = 0.0;
|
|
if (!t.backward(x,y,z)) {
|
|
std::ostringstream s;
|
|
s << "Failed to back project "
|
|
<< c << " from " << t.dest().params() << " to: " << t.source().params();
|
|
throw std::runtime_error(s.str());
|
|
}
|
|
return mapnik::coord2d(x,y);
|
|
}
|
|
|
|
mapnik::box2d<double> forward_transform_env(mapnik::proj_transform& t, mapnik::box2d<double> const & box)
|
|
{
|
|
mapnik::box2d<double> new_box = box;
|
|
if (!t.forward(new_box)) {
|
|
std::ostringstream s;
|
|
s << "Failed to forward project "
|
|
<< box << " from " << t.source().params() << " to: " << t.dest().params();
|
|
throw std::runtime_error(s.str());
|
|
}
|
|
return new_box;
|
|
}
|
|
|
|
mapnik::box2d<double> backward_transform_env(mapnik::proj_transform& t, mapnik::box2d<double> const & box)
|
|
{
|
|
mapnik::box2d<double> new_box = box;
|
|
if (!t.backward(new_box)){
|
|
std::ostringstream s;
|
|
s << "Failed to back project "
|
|
<< box << " from " << t.dest().params() << " to: " << t.source().params();
|
|
throw std::runtime_error(s.str());
|
|
}
|
|
return new_box;
|
|
}
|
|
|
|
mapnik::box2d<double> forward_transform_env_p(mapnik::proj_transform& t, mapnik::box2d<double> const & box, unsigned int points)
|
|
{
|
|
mapnik::box2d<double> new_box = box;
|
|
if (!t.forward(new_box,points)) {
|
|
std::ostringstream s;
|
|
s << "Failed to forward project "
|
|
<< box << " from " << t.source().params() << " to: " << t.dest().params();
|
|
throw std::runtime_error(s.str());
|
|
}
|
|
return new_box;
|
|
}
|
|
|
|
mapnik::box2d<double> backward_transform_env_p(mapnik::proj_transform& t, mapnik::box2d<double> const & box, unsigned int points)
|
|
{
|
|
mapnik::box2d<double> new_box = box;
|
|
if (!t.backward(new_box,points)){
|
|
std::ostringstream s;
|
|
s << "Failed to back project "
|
|
<< box << " from " << t.dest().params() << " to: " << t.source().params();
|
|
throw std::runtime_error(s.str());
|
|
}
|
|
return new_box;
|
|
}
|
|
|
|
}
|
|
|
|
void export_proj_transform ()
|
|
{
|
|
using namespace boost::python;
|
|
|
|
class_<proj_transform, boost::noncopyable>("ProjTransform", init< projection const&, projection const& >())
|
|
.def_pickle(proj_transform_pickle_suite())
|
|
.def("forward", forward_transform_c)
|
|
.def("backward",backward_transform_c)
|
|
.def("forward", forward_transform_env)
|
|
.def("backward",backward_transform_env)
|
|
.def("forward", forward_transform_env_p)
|
|
.def("backward",backward_transform_env_p)
|
|
;
|
|
|
|
}
|