e7c3d04309
format all files Revert "format all files" This reverts commit 95d5812e49e7f916b68e786596f5a8eb5bcac414. Revert "format some files" This reverts commit ed3c8762d4d828b2b28e7b18809fc33f4f8ccaf5. format all files fix formatting in dir include fix formatting of debug macro
94 lines
3 KiB
C++
94 lines
3 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 GDAL_FEATURESET_HPP
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#define GDAL_FEATURESET_HPP
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// mapnik
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#include <mapnik/featureset.hpp>
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#include <mapnik/query.hpp>
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#include <mapnik/util/variant.hpp>
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// boost
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#include <boost/optional.hpp>
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class GDALDataset;
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class GDALRasterBand;
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using gdal_query = mapnik::util::variant<mapnik::query, mapnik::coord2d>;
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class gdal_featureset : public mapnik::Featureset
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{
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struct query_dispatch
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{
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query_dispatch(gdal_featureset& featureset)
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: featureset_(featureset)
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{}
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mapnik::feature_ptr operator()(mapnik::query const& q) const { return featureset_.get_feature(q); }
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mapnik::feature_ptr operator()(mapnik::coord2d const& p) const { return featureset_.get_feature_at_point(p); }
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gdal_featureset& featureset_;
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};
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public:
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gdal_featureset(GDALDataset& dataset,
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int band,
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gdal_query q,
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mapnik::box2d<double> extent,
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unsigned width,
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unsigned height,
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int nbands,
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double dx,
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double dy,
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boost::optional<double> const& nodata,
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double nodata_tolerance,
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int64_t max_image_area);
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virtual ~gdal_featureset();
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mapnik::feature_ptr next();
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private:
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void find_best_overview(int bandNumber,
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int ideal_width,
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int ideal_height,
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int& current_width,
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int& current_height) const;
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mapnik::feature_ptr get_feature(mapnik::query const& q);
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mapnik::feature_ptr get_feature_at_point(mapnik::coord2d const& p);
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GDALDataset& dataset_;
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mapnik::context_ptr ctx_;
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int band_;
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gdal_query gquery_;
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mapnik::box2d<double> raster_extent_;
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unsigned raster_width_;
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unsigned raster_height_;
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double dx_;
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double dy_;
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int nbands_;
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boost::optional<double> nodata_value_;
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double nodata_tolerance_;
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int64_t max_image_area_;
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bool first_;
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};
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#endif // GDAL_FEATURESET_HPP
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