75 lines
2.8 KiB
C++
75 lines
2.8 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) 2016 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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#include "catch.hpp"
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#include <mapnik/util/fs.hpp>
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#include <mapnik/util/file_io.hpp>
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#include <mapnik/json/topology.hpp>
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#include <mapnik/json/topojson_grammar.hpp>
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#include <mapnik/json/topojson_utils.hpp>
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namespace {
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using iterator_type = std::string::const_iterator;
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const mapnik::topojson::topojson_grammar<iterator_type> grammar;
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bool parse_topology(std::string const& filename, mapnik::topojson::topology & topo)
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{
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mapnik::util::file file(filename);
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std::string buffer;
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buffer.resize(file.size());
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std::fread(&buffer[0], buffer.size(), 1, file.get());
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if (!file) return false;
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boost::spirit::standard::space_type space;
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iterator_type itr = buffer.begin();
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iterator_type end = buffer.end();
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bool result = boost::spirit::qi::phrase_parse(itr, end, grammar, space, topo);
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return (result && (itr == end));
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}
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}
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TEST_CASE("topology")
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{
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SECTION("geometry parsing")
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{
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mapnik::value_integer feature_id = 0;
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mapnik::context_ptr ctx = std::make_shared<mapnik::context_type>();
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mapnik::transcoder tr("utf8");
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for (auto const& path : mapnik::util::list_directory("test/data/topojson/"))
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{
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mapnik::topojson::topology topo;
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REQUIRE(parse_topology(path, topo));
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for (auto const& geom : topo.geometries)
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{
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mapnik::box2d<double> bbox = mapnik::util::apply_visitor(mapnik::topojson::bounding_box_visitor(topo), geom);
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CHECK(bbox.valid());
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mapnik::topojson::feature_generator<mapnik::context_ptr> visitor(ctx, tr, topo, feature_id++);
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mapnik::feature_ptr feature = mapnik::util::apply_visitor(visitor, geom);
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CHECK(feature);
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CHECK(feature->envelope() == bbox);
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}
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}
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}
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}
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