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81 lines
2.2 KiB
C++
81 lines
2.2 KiB
C++
#include "drape_frontend/overlays_tracker.hpp"
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namespace df
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{
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void OverlaysTracker::SetTrackedOverlaysFeatures(std::vector<FeatureID> && ids)
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{
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m_data.clear();
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for (auto const & fid : ids)
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m_data.insert(std::make_pair(fid, OverlayInfo()));
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}
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bool OverlaysTracker::StartTracking(int zoomLevel, bool hasMyPosition,
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m2::PointD const & myPosition, double gpsAccuracy)
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{
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if (zoomLevel < kMinZoomLevel)
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{
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for (auto & p : m_data)
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p.second.m_status = OverlayStatus::Invisible;
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return false;
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}
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m_zoomLevel = zoomLevel;
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m_hasMyPosition = hasMyPosition;
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m_myPosition = m_hasMyPosition ? myPosition : m2::PointD();
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m_gpsAccuracy = m_hasMyPosition ? gpsAccuracy : 0.0;
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for (auto & p : m_data)
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p.second.m_tracked = false;
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return true;
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}
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void OverlaysTracker::Track(FeatureID const & fid)
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{
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ASSERT_GREATER_OR_EQUAL(m_zoomLevel, kMinZoomLevel, ());
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auto it = m_data.find(fid);
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if (it == m_data.end())
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return;
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it->second.m_tracked = true;
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if (it->second.m_status == OverlayStatus::Invisible)
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{
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it->second.m_status = OverlayStatus::Visible;
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m_events.emplace_back(it->first, static_cast<uint8_t>(m_zoomLevel),
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EventClock::now(), m_hasMyPosition,
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m_myPosition, m_gpsAccuracy);
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}
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}
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void OverlaysTracker::FinishTracking()
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{
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ASSERT_GREATER_OR_EQUAL(m_zoomLevel, kMinZoomLevel, ());
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for (auto & p : m_data)
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{
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if (p.second.m_status == OverlayStatus::Visible && !p.second.m_tracked)
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{
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p.second.m_status = OverlayStatus::InvisibleCandidate;
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p.second.m_timestamp = EventClock::now();
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}
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else if (p.second.m_status == OverlayStatus::InvisibleCandidate)
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{
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// Here we add some delay to avoid false events appearance.
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static auto const kDelay = std::chrono::milliseconds(500);
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if (p.second.m_tracked)
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p.second.m_status = OverlayStatus::Visible;
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else if (EventClock::now() - p.second.m_timestamp > kDelay)
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p.second.m_status = OverlayStatus::Invisible;
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}
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}
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m_zoomLevel = -1;
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}
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std::list<OverlayShowEvent> OverlaysTracker::Collect()
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{
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std::list<OverlayShowEvent> events;
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std::swap(m_events, events);
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return events;
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}
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} // namespace df
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