/***************************************************************************** * * 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) ; }