66 lines
2.6 KiB
C++
66 lines
2.6 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
|
|
*
|
|
*****************************************************************************/
|
|
|
|
// mapnik
|
|
#include <mapnik/svg/output/svg_renderer.hpp>
|
|
|
|
namespace mapnik {
|
|
|
|
template <typename OutputIterator>
|
|
bool svg_renderer<OutputIterator>::process(rule::symbolizers const& syms,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans)
|
|
{
|
|
// svg renderer supports processing of multiple symbolizers.
|
|
typedef coord_transform<CoordTransform, geometry_type> path_type;
|
|
|
|
// process each symbolizer to collect its (path) information.
|
|
// path information (attributes from line_ and polygon_ symbolizers)
|
|
// is collected with the path_attributes_ data member.
|
|
BOOST_FOREACH(symbolizer const& sym, syms)
|
|
{
|
|
boost::apply_visitor(symbol_dispatch(*this, feature, prj_trans), sym);
|
|
}
|
|
|
|
// generate path output for each geometry of the current feature.
|
|
for(unsigned i=0; i<feature.num_geometries(); ++i)
|
|
{
|
|
geometry_type & geom = feature.get_geometry(i);
|
|
if(geom.size() > 0)
|
|
{
|
|
path_type path(t_, geom, prj_trans);
|
|
generator_.generate_path(path, path_attributes_);
|
|
}
|
|
}
|
|
|
|
// set the previously collected values back to their defaults
|
|
// for the feature that will be processed next.
|
|
path_attributes_.reset();
|
|
|
|
return true;
|
|
}
|
|
|
|
template bool svg_renderer<std::ostream_iterator<char> >::process(rule::symbolizers const& syms,
|
|
mapnik::feature_impl & feature,
|
|
proj_transform const& prj_trans);
|
|
|
|
}
|