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Don't remove the last original coordinate during tiding

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Michael Krasnyk 2017-04-12 23:14:35 +02:00 committed by Patrick Niklaus
parent b422b636d3
commit 3915c1286b
2 changed files with 18 additions and 10 deletions
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12
include/engine/api/match_parameters_tidy.hpp
View File

@ -80,6 +80,8 @@ inline Result keep_all(const MatchParameters &params)
inline Result tidy(const MatchParameters &params, Thresholds cfg = {15., 5})
{
BOOST_ASSERT(!params.coordinates.empty());
Result result;
result.can_be_removed.resize(params.coordinates.size(), false);
@ -91,10 +93,8 @@ inline Result tidy(const MatchParameters &params, Thresholds cfg = {15., 5})
Thresholds running{0., 0};
// Walk over adjacent (coord, ts)-pairs, with rhs being the candidate to discard or keep
for (std::size_t current = 0; current < params.coordinates.size() - 1; ++current)
for (std::size_t current = 0, next = 1; next < params.coordinates.size() - 1; ++current, ++next)
{
const auto next = current + 1;
auto distance_delta = util::coordinate_calculation::haversineDistance(
params.coordinates[current], params.coordinates[next]);
running.distance_in_meters += distance_delta;
@ -130,7 +130,11 @@ inline Result tidy(const MatchParameters &params, Thresholds cfg = {15., 5})
}
}
BOOST_ASSERT(result.can_be_removed.size() == params.coordinates.size());
// Always use the last coordinate if more than two original coordinates
if (params.coordinates.size() > 1)
{
result.tidied_to_original.push_back(params.coordinates.size() - 1);
}
// We have to filter parallel arrays that may be empty or the exact same size.
// result.parameters contains an empty MatchParameters at this point: conditionally fill.

16
unit_tests/engine/tidy.cpp
View File

@ -53,10 +53,10 @@ BOOST_AUTO_TEST_CASE(two_item_trace_needs_tidiying_test)
auto result = tidy::tidy(params, thresholds);
BOOST_CHECK_EQUAL(result.can_be_removed.size(), 2);
BOOST_CHECK_EQUAL(result.tidied_to_original.size(), 1);
BOOST_CHECK_EQUAL(result.tidied_to_original.size(), 2);
BOOST_CHECK_EQUAL(result.can_be_removed[0], false);
BOOST_CHECK_EQUAL(result.can_be_removed[1], true);
BOOST_CHECK_EQUAL(result.can_be_removed[1], false);
BOOST_CHECK_EQUAL(result.tidied_to_original[0], 0);
}
@ -87,16 +87,18 @@ BOOST_AUTO_TEST_CASE(two_blobs_in_traces_needs_tidiying_test)
auto result = tidy::tidy(params, thresholds);
BOOST_CHECK_EQUAL(result.can_be_removed.size(), params.coordinates.size());
BOOST_CHECK_EQUAL(result.tidied_to_original.size(), 2);
BOOST_CHECK_EQUAL(result.tidied_to_original.size(), 3);
BOOST_CHECK_EQUAL(result.tidied_to_original[0], 0);
BOOST_CHECK_EQUAL(result.tidied_to_original[1], 3);
BOOST_CHECK_EQUAL(result.tidied_to_original[2], 5);
const auto redundant = result.can_be_removed.count();
BOOST_CHECK_EQUAL(redundant, params.coordinates.size() - 2);
BOOST_CHECK_EQUAL(redundant, params.coordinates.size() - 3);
BOOST_CHECK_EQUAL(result.can_be_removed[0], false);
BOOST_CHECK_EQUAL(result.can_be_removed[3], false);
BOOST_CHECK_EQUAL(result.can_be_removed[5], false);
}
BOOST_AUTO_TEST_CASE(two_blobs_in_traces_needs_tidiying_no_timestamps_test)
@ -118,15 +120,17 @@ BOOST_AUTO_TEST_CASE(two_blobs_in_traces_needs_tidiying_no_timestamps_test)
auto result = tidy::tidy(params, thresholds);
BOOST_CHECK_EQUAL(result.can_be_removed.size(), params.coordinates.size());
BOOST_CHECK_EQUAL(result.tidied_to_original.size(), 2);
BOOST_CHECK_EQUAL(result.tidied_to_original.size(), 3);
BOOST_CHECK_EQUAL(result.tidied_to_original[0], 0);
BOOST_CHECK_EQUAL(result.tidied_to_original[1], 3);
BOOST_CHECK_EQUAL(result.tidied_to_original[2], 5);
const auto redundant = result.can_be_removed.count();
BOOST_CHECK_EQUAL(redundant, params.coordinates.size() - 2);
BOOST_CHECK_EQUAL(redundant, params.coordinates.size() - 3);
BOOST_CHECK_EQUAL(result.can_be_removed[0], false);
BOOST_CHECK_EQUAL(result.can_be_removed[3], false);
BOOST_CHECK_EQUAL(result.can_be_removed[5], false);
}
BOOST_AUTO_TEST_SUITE_END()