47c3bc515d
if (width*height > 1024*1024) : load raster in 1024x1024 chunks else : use single_file_policy TODO: Expose chunk size as raster_datasource parameter
57 lines
2.1 KiB
C++
57 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) 2006 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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//$Id: raster_datasource.hh 44 2005-04-22 18:53:54Z pavlenko $
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#ifndef RASTER_DATASOURCE_HPP
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#define RASTER_DATASOURCE_HPP
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#include <mapnik/envelope.hpp>
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#include <mapnik/feature.hpp>
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#include <mapnik/datasource.hpp>
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class raster_datasource : public mapnik::datasource
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{
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private:
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std::string filename_;
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std::string format_;
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mapnik::Envelope<double> extent_;
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mapnik::layer_descriptor desc_;
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unsigned width_;
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unsigned height_;
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static std::string name_;
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public:
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raster_datasource(const mapnik::parameters& params);
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virtual ~raster_datasource();
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int type() const;
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static std::string name();
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mapnik::featureset_ptr features(const mapnik::query& q) const;
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mapnik::featureset_ptr features_at_point(mapnik::coord2d const& pt) const;
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mapnik::Envelope<double> envelope() const;
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mapnik::layer_descriptor get_descriptor() const;
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private:
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//no copying
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raster_datasource(const raster_datasource&);
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raster_datasource& operator=(const raster_datasource&);
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//
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};
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#endif //RASTER_DATASOURCE_HPP
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