86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2009 Artem Pavlenko
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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//$Id$
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// mapnik
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#include <mapnik/proj_transform.hpp>
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// boost
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#include <boost/python.hpp>
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namespace {
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mapnik::coord2d forward_transform_c(mapnik::proj_transform& t, mapnik::coord2d const& c)
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{
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double x = c.x;
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double y = c.y;
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double z = 0.0;
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t.forward(x,y,z);
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return mapnik::coord2d(x,y);
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}
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mapnik::coord2d backward_transform_c(mapnik::proj_transform& t, mapnik::coord2d const& c)
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{
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double x = c.x;
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double y = c.y;
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double z = 0.0;
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t.backward(x,y,z);
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return mapnik::coord2d(x,y);
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}
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mapnik::Envelope<double> forward_transform_env(mapnik::proj_transform& t, mapnik::Envelope<double> const & box)
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{
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double minx = box.minx();
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double miny = box.miny();
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double maxx = box.maxx();
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double maxy = box.maxy();
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double z = 0.0;
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t.forward(minx,miny,z);
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t.forward(maxx,maxy,z);
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return mapnik::Envelope<double>(minx,miny,maxx,maxy);
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}
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mapnik::Envelope<double> backward_transform_env(mapnik::proj_transform& t, mapnik::Envelope<double> const & box)
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{
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double minx = box.minx();
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double miny = box.miny();
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double maxx = box.maxx();
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double maxy = box.maxy();
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double z = 0.0;
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t.backward(minx,miny,z);
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t.backward(maxx,maxy,z);
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return mapnik::Envelope<double>(minx,miny,maxx,maxy);
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}
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}
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void export_proj_transform ()
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{
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using namespace boost::python;
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using mapnik::proj_transform;
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using mapnik::projection;
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class_<proj_transform, boost::noncopyable>("ProjTransform", init< projection const&, projection const& >())
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.def("forward", forward_transform_c)
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.def("backward",backward_transform_c)
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.def("forward", forward_transform_env)
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.def("backward",backward_transform_env)
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;
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}
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