81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
#include "engine/douglas_peucker.hpp"
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#include "engine/segment_information.hpp"
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#include <boost/test/unit_test.hpp>
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#include <boost/test/test_case_template.hpp>
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#include <osrm/coordinate.hpp>
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#include <vector>
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BOOST_AUTO_TEST_SUITE(douglas_peucker_simplification)
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using namespace osrm;
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using namespace osrm::engine;
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SegmentInformation getTestInfo(int lat, int lon, bool necessary)
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{
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return SegmentInformation(util::FixedPointCoordinate(lat, lon), 0, 0, 0,
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extractor::TurnInstruction::HeadOn, necessary, false, 0);
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}
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BOOST_AUTO_TEST_CASE(all_necessary_test)
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{
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/*
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x
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/ \
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x \
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/ \
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x x
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/
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*/
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std::vector<SegmentInformation> info = {getTestInfo(5, 5, true),
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getTestInfo(6, 6, true),
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getTestInfo(10, 10, true),
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getTestInfo(5, 15, true)};
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for (unsigned z = 0; z < detail::DOUGLAS_PEUCKER_THRESHOLDS_SIZE; z++)
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{
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douglasPeucker(info, z);
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for (const auto &i : info)
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{
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BOOST_CHECK_EQUAL(i.necessary, true);
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}
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}
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}
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BOOST_AUTO_TEST_CASE(remove_second_node_test)
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{
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for (unsigned z = 0; z < detail::DOUGLAS_PEUCKER_THRESHOLDS_SIZE; z++)
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{
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/*
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x--x
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| \
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x-x x
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x
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*/
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std::vector<SegmentInformation> info = {
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getTestInfo(5 * COORDINATE_PRECISION, 5 * COORDINATE_PRECISION, true),
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getTestInfo(5 * COORDINATE_PRECISION,
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5 * COORDINATE_PRECISION + detail::DOUGLAS_PEUCKER_THRESHOLDS[z], false),
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getTestInfo(10 * COORDINATE_PRECISION, 10 * COORDINATE_PRECISION, false),
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getTestInfo(10 * COORDINATE_PRECISION,
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10 + COORDINATE_PRECISION + detail::DOUGLAS_PEUCKER_THRESHOLDS[z] * 2,
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false),
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getTestInfo(5 * COORDINATE_PRECISION, 15 * COORDINATE_PRECISION, false),
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getTestInfo(5 * COORDINATE_PRECISION + detail::DOUGLAS_PEUCKER_THRESHOLDS[z],
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15 * COORDINATE_PRECISION, true),
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};
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BOOST_TEST_MESSAGE("Threshold (" << z << "): " << detail::DOUGLAS_PEUCKER_THRESHOLDS[z]);
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douglasPeucker(info, z);
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BOOST_CHECK_EQUAL(info[0].necessary, true);
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BOOST_CHECK_EQUAL(info[1].necessary, false);
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BOOST_CHECK_EQUAL(info[2].necessary, true);
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BOOST_CHECK_EQUAL(info[3].necessary, true);
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BOOST_CHECK_EQUAL(info[4].necessary, false);
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BOOST_CHECK_EQUAL(info[5].necessary, true);
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}
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}
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BOOST_AUTO_TEST_SUITE_END()
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