/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2015 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 * *****************************************************************************/ #ifndef GDAL_DATASOURCE_HPP #define GDAL_DATASOURCE_HPP // mapnik #include <mapnik/datasource.hpp> #include <mapnik/params.hpp> #include <mapnik/query.hpp> #include <mapnik/feature.hpp> #include <mapnik/box2d.hpp> #include <mapnik/coord.hpp> #include <mapnik/feature_layer_desc.hpp> // boost #include <boost/optional.hpp> // stl #include <vector> #include <string> // gdal #include <gdal_priv.h> class gdal_datasource : public mapnik::datasource { public: gdal_datasource(mapnik::parameters const& params); virtual ~gdal_datasource(); mapnik::datasource::datasource_t type() const; static const char * name(); mapnik::featureset_ptr features(mapnik::query const& q) const; mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt, double tol = 0) const; mapnik::box2d<double> envelope() const; boost::optional<mapnik::datasource_geometry_t> get_geometry_type() const; mapnik::layer_descriptor get_descriptor() const; private: GDALDataset* open_dataset() const; GDALDataset* dataset_; mapnik::box2d<double> extent_; std::string dataset_name_; int band_; mapnik::layer_descriptor desc_; unsigned width_; unsigned height_; double dx_; double dy_; int nbands_; bool shared_dataset_; boost::optional<double> nodata_value_; double nodata_tolerance_; }; #endif // GDAL_DATASOURCE_HPP