/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2014 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 <mapnik/config.hpp> // boost #include "boost_std_shared_shim.hpp" #pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Wunused-parameter" #pragma GCC diagnostic ignored "-Wunused-local-typedef" #pragma GCC diagnostic ignored "-Wmissing-field-initializers" #include <boost/python.hpp> #include <boost/noncopyable.hpp> #pragma GCC diagnostic pop // mapnik #include <mapnik/proj_transform.hpp> #include <mapnik/projection.hpp> #include <mapnik/coord.hpp> #include <mapnik/box2d.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 " << "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 " << "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 " << "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 " << "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 " << "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 " << "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) ; }