0253653676
* geobuf.input - initial implementation (WIP) * geobuf.input - fix reading MultiPolygon's * geobuf.input - don't store invalid bounding boxes in r-tree. * Use `protozero` lib to read `geobuf` (Initial implementation, not complete!) * geobuf.input - poring to `protozero`. (TODO: add support for `GeometryCollection`) * add initial support for `GeometryCollection` + cleanup namespaces * remove stderr + cleanup + update copyright * fix GeometryCollection and MultiLineString decoding + add support for standalone Feature and Geometry * don't use `reserve` as undelying data format doesn't allow for efficient `distance` implementation. * add geobuf unit test + update test data * update data
58 lines
1.9 KiB
C++
58 lines
1.9 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) 2017 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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// mapnik
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#include <mapnik/feature.hpp>
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#include <mapnik/feature_factory.hpp>
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// stl
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#include <string>
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#include <vector>
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#include <deque>
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#include "geobuf_featureset.hpp"
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geobuf_featureset::geobuf_featureset(std::vector<mapnik::feature_ptr> const& features,array_type && index_array)
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: features_(features),
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index_array_(std::move(index_array)),
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index_itr_(index_array_.begin()),
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index_end_(index_array_.end()),
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ctx_(std::make_shared<mapnik::context_type>()) {}
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geobuf_featureset::~geobuf_featureset() {}
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mapnik::feature_ptr geobuf_featureset::next()
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{
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if (index_itr_ != index_end_)
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{
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#if BOOST_VERSION >= 105600
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geobuf_datasource::item_type const& item = *index_itr_++;
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std::size_t index = item.second.first;
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#else
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std::size_t index = *index_itr_++;
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#endif
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if ( index < features_.size())
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{
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return features_.at(index);
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}
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}
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return mapnik::feature_ptr();
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}
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