mapnik/test/unit/map/query_map_point.cpp

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/*****************************************************************************
*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2021 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
*
*****************************************************************************/
#include "catch.hpp"
#include <mapnik/map.hpp>
#include <mapnik/feature.hpp>
#include <mapnik/featureset.hpp>
#include <mapnik/load_map.hpp>
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namespace {
bool test_query_point(mapnik::Map const& map,
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double x,
double y,
std::string const& name,
std::string const& expected_val)
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{
auto featureset = map.query_map_point(0u, x, y);
while (auto feature = featureset->next())
{
auto val = feature->get(name);
return (val.to_string() == expected_val);
}
return false;
}
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} // namespace
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TEST_CASE("Query map point")
{
SECTION("Polygons")
{
mapnik::Map map(882, 780);
mapnik::load_map(map, "./test/data/good_maps/wgs842merc_reprojection.xml");
map.zoom_all();
CHECK(test_query_point(map, 351, 94, "ADMIN", "Greenland"));
CHECK(test_query_point(map, 402, 182, "ADMIN", "Iceland"));
CHECK(test_query_point(map, 339, 687, "ADMIN", "Antarctica"));
CHECK(test_query_point(map, 35, 141, "ADMIN", "Russia"));
CHECK(test_query_point(map, 737, 297, "ADMIN", "Japan"));
}
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}