84 lines
2.6 KiB
C++
84 lines
2.6 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2009 Artem Pavlenko, Jean-Francois Doyon
|
|
*
|
|
* 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
|
|
*
|
|
*****************************************************************************/
|
|
|
|
// boost
|
|
#include <boost/python.hpp>
|
|
|
|
// mapnik
|
|
#include <mapnik/ctrans.hpp>
|
|
|
|
using mapnik::CoordTransform;
|
|
|
|
struct view_transform_pickle_suite : boost::python::pickle_suite
|
|
{
|
|
static boost::python::tuple
|
|
getinitargs(const CoordTransform& c)
|
|
{
|
|
using namespace boost::python;
|
|
return boost::python::make_tuple(c.width(),c.height(),c.extent());
|
|
}
|
|
};
|
|
|
|
namespace {
|
|
|
|
mapnik::coord2d forward_point(mapnik::CoordTransform const& t, mapnik::coord2d const& in)
|
|
{
|
|
mapnik::coord2d out(in);
|
|
t.forward(out);
|
|
return out;
|
|
}
|
|
|
|
mapnik::coord2d backward_point(mapnik::CoordTransform const& t, mapnik::coord2d const& in)
|
|
{
|
|
mapnik::coord2d out(in);
|
|
t.backward(out);
|
|
return out;
|
|
}
|
|
|
|
mapnik::box2d<double> forward_envelope(mapnik::CoordTransform const& t, mapnik::box2d<double> const& in)
|
|
{
|
|
return t.forward(in);
|
|
}
|
|
|
|
mapnik::box2d<double> backward_envelope(mapnik::CoordTransform const& t, mapnik::box2d<double> const& in)
|
|
{
|
|
return t.backward(in);
|
|
}
|
|
}
|
|
|
|
void export_view_transform()
|
|
{
|
|
using namespace boost::python;
|
|
using mapnik::box2d;
|
|
using mapnik::coord2d;
|
|
|
|
class_<CoordTransform>("ViewTransform",init<int,int,box2d<double> const& > (
|
|
"Create a ViewTransform with a width and height as integers and extent"))
|
|
.def_pickle(view_transform_pickle_suite())
|
|
.def("forward", forward_point)
|
|
.def("backward",backward_point)
|
|
.def("forward", forward_envelope)
|
|
.def("backward",backward_envelope)
|
|
.def("scale_x",&CoordTransform::scale_x)
|
|
.def("scale_y",&CoordTransform::scale_y)
|
|
;
|
|
}
|