70 lines
2.1 KiB
C++
70 lines
2.1 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) 2021 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 SHAPE_FEATURESET_HPP
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#define SHAPE_FEATURESET_HPP
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//mapnik
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#include <mapnik/datasource.hpp>
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#include <mapnik/geom_util.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/unicode.hpp>
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#include <mapnik/value/types.hpp>
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#include "shape_io.hpp"
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//boost
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#include <boost/utility.hpp>
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using mapnik::Featureset;
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using mapnik::box2d;
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using mapnik::feature_ptr;
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using mapnik::transcoder;
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using mapnik::context_ptr;
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template <typename filterT>
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class shape_featureset : public Featureset
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{
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public:
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shape_featureset(filterT const& filter,
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std::string const& shape_file,
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std::set<std::string> const& attribute_names,
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std::string const& encoding,
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int row_limit);
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virtual ~shape_featureset();
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feature_ptr next();
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private:
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filterT filter_;
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shape_io shape_;
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box2d<double> query_ext_;
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mutable box2d<double> feature_bbox_;
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const std::unique_ptr<transcoder> tr_;
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long shx_file_length_;
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std::vector<int> attr_ids_;
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mapnik::value_integer row_limit_;
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mutable int count_;
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context_ptr ctx_;
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};
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#endif //SHAPE_FEATURESET_HPP
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