102 lines
2.6 KiB
C++
102 lines
2.6 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) 2015 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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#ifndef MAPNIK_VERTEX_PROCESSOR_HPP
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#define MAPNIK_VERTEX_PROCESSOR_HPP
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#include <mapnik/geometry_impl.hpp>
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namespace mapnik { namespace new_geometry {
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template <typename T>
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struct vertex_processor
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{
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using processor_type = T;
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vertex_processor(processor_type& proc)
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: proc_(proc) {}
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void operator() (geometry const& geom)
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{
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util::apply_visitor(*this, geom);
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}
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void operator() (geometry_empty const&)
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{
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// no-op
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}
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void operator() (point const& pt)
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{
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point_vertex_adapter va(pt);
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proc_(va);
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}
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void operator() (line_string const& line)
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{
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line_string_vertex_adapter va(line);
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proc_(va);
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}
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void operator() (polygon const& poly)
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{
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polygon_vertex_adapter va(poly);
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proc_(va);
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}
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void operator() (multi_point const& multi_pt)
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{
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for (auto const& pt : multi_pt)
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{
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point_vertex_adapter va(pt);
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proc_(va);
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}
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}
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void operator() (multi_line_string const& multi_line)
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{
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for (auto const& line : multi_line)
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{
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line_string_vertex_adapter va(line);
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proc_(va);
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}
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}
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void operator() (multi_polygon const& multi_poly)
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{
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for ( auto const& poly : multi_poly)
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{
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polygon_vertex_adapter va(poly);
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proc_(va);
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}
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}
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void operator() (geometry_collection const& collection)
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{
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for (auto const& geom : collection)
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{
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operator()(geom);
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}
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}
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processor_type & proc_;
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};
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}}
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#endif // MAPNIK_VERTEX_PROCESSOR_HPP
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