90 lines
3.2 KiB
C++
90 lines
3.2 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2011 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
|
|
*
|
|
*****************************************************************************/
|
|
|
|
#if defined(GRID_RENDERER)
|
|
|
|
#include <mapnik/config.hpp>
|
|
|
|
#include "boost_std_shared_shim.hpp"
|
|
|
|
// boost
|
|
#include <boost/python.hpp>
|
|
#include <boost/python/module.hpp>
|
|
#include <boost/python/def.hpp>
|
|
|
|
// mapnik
|
|
#include <mapnik/grid/grid.hpp>
|
|
#include "python_grid_utils.hpp"
|
|
|
|
using namespace boost::python;
|
|
|
|
// help compiler see template definitions
|
|
static dict (*encode)( mapnik::grid const&, std::string const& , bool, unsigned int) = mapnik::grid_encode;
|
|
|
|
bool painted(mapnik::grid const& grid)
|
|
{
|
|
return grid.painted();
|
|
}
|
|
|
|
mapnik::grid::value_type get_pixel(mapnik::grid const& grid, int x, int y)
|
|
{
|
|
if (x < static_cast<int>(grid.width()) && y < static_cast<int>(grid.height()))
|
|
{
|
|
mapnik::grid::data_type const & data = grid.data();
|
|
return data(x,y);
|
|
}
|
|
PyErr_SetString(PyExc_IndexError, "invalid x,y for grid dimensions");
|
|
boost::python::throw_error_already_set();
|
|
return 0;
|
|
}
|
|
|
|
void export_grid()
|
|
{
|
|
class_<mapnik::grid,std::shared_ptr<mapnik::grid> >(
|
|
"Grid",
|
|
"This class represents a feature hitgrid.",
|
|
init<int,int,std::string,unsigned>(
|
|
( boost::python::arg("width"), boost::python::arg("height"),boost::python::arg("key")="__id__", boost::python::arg("resolution")=1 ),
|
|
"Create a mapnik.Grid object\n"
|
|
))
|
|
.def("painted",&painted)
|
|
.def("width",&mapnik::grid::width)
|
|
.def("height",&mapnik::grid::height)
|
|
.def("view",&mapnik::grid::get_view)
|
|
.def("get_pixel",&get_pixel)
|
|
.def("clear",&mapnik::grid::clear)
|
|
.def("encode",encode,
|
|
( boost::python::arg("encoding")="utf", boost::python::arg("features")=true,boost::python::arg("resolution")=4 ),
|
|
"Encode the grid as as optimized json\n"
|
|
)
|
|
.add_property("key",
|
|
make_function(&mapnik::grid::get_key,return_value_policy<copy_const_reference>()),
|
|
&mapnik::grid::set_key,
|
|
"Get/Set key to be used as unique indentifier for features\n"
|
|
"The value should either be __id__ to refer to the feature.id()\n"
|
|
"or some globally unique integer or string attribute field\n"
|
|
)
|
|
;
|
|
|
|
}
|
|
|
|
#endif
|