54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
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/*****************************************************************************
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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) 2015 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 COMPARE_IMAGES_HPP
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#define COMPARE_IMAGES_HPP
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// stl
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#include <memory>
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// mapnik
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#include <mapnik/image_util.hpp>
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#include <mapnik/image_reader.hpp>
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namespace visual_tests
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{
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template <typename Image>
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unsigned compare_images(Image const & actual, std::string const & reference)
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{
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std::unique_ptr<mapnik::image_reader> reader(mapnik::get_image_reader(reference, "png"));
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if (!reader.get())
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{
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throw mapnik::image_reader_exception("Failed to load: " + reference);
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}
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mapnik::image_any ref_image_any = reader->read(0, 0, reader->width(), reader->height());
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Image const & reference_image = mapnik::util::get<Image>(ref_image_any);
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return mapnik::compare(actual, reference_image, 0, true);
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}
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}
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#endif
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