92 lines
3 KiB
C++
92 lines
3 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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* 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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// boost
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#include <boost/python.hpp>
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#include <boost/python/def.hpp>
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#include <boost/python/exception_translator.hpp>
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#include <boost/python/manage_new_object.hpp>
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#include <boost/python/iterator.hpp>
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#include <boost/ptr_container/ptr_vector.hpp>
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// mapnik
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#include <mapnik/geometry.hpp>
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#include <mapnik/wkt/wkt_factory.hpp>
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#include <mapnik/wkb.hpp>
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namespace {
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using mapnik::from_wkt;
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using mapnik::geometry_type;
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typedef boost::ptr_vector<geometry_type> path_type;
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geometry_type const& getitem_impl(path_type & p, int key)
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{
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if (key >=0 && key < p.size())
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return p[key];
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PyErr_SetString(PyExc_IndexError, "Index is out of range");
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throw boost::python::error_already_set();
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}
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void from_wkt_impl(path_type& p, std::string const& wkt)
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{
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bool result = mapnik::from_wkt(wkt , p);
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if (!result) throw std::runtime_error("Failed to parse WKT");
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}
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void from_wkb_impl(path_type& p, std::string const& wkb)
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{
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mapnik::geometry_utils::from_wkb(p, wkb.c_str(), wkb.size(), true);
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}
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}
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void export_geometry()
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{
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using namespace boost::python;
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enum_<mapnik::eGeomType>("GeometryType")
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.value("Point",mapnik::Point)
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.value("LineString",mapnik::LineString)
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.value("Polygon",mapnik::Polygon)
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.value("MultiPoint",mapnik::MultiPoint)
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.value("MultiLineString",mapnik::MultiLineString)
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.value("MultiPolygon",mapnik::MultiPolygon)
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;
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using mapnik::geometry_type;
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class_<geometry_type, std::auto_ptr<geometry_type>,boost::noncopyable>("Geometry2d",no_init)
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.def("envelope",&geometry_type::envelope)
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// .def("__str__",&geometry_type::to_string)
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.def("type",&geometry_type::type)
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.def("area",&geometry_type::area)
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// TODO add other geometry_type methods
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;
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class_<path_type,boost::noncopyable>("Path")
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.def("__getitem__", getitem_impl,return_value_policy<reference_existing_object>())
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.def("__len__", &path_type::size)
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.def("from_wkt",from_wkt_impl)
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.def("from_wkb",from_wkb_impl)
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;
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}
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