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#pragma once
#include "search/mwm_context.hpp"
#include "search/projection_on_street.hpp"
#include "search/stats_cache.hpp"
#include "indexer/feature.hpp"
#include "indexer/feature_algo.hpp"
#include "geometry/rect2d.hpp"
#include "base/macros.hpp"
#include "std/unordered_map.hpp"
namespace search
{
class MwmContext;
// This class is able to load features in a street's vicinity.
//
// NOTE: this class *IS NOT* thread-safe.
class StreetVicinityLoader
{
public:
struct Street
{
Street() = default;
Street(Street && street) = default;
inline bool IsEmpty() const { return !m_calculator || m_rect.IsEmptyInterior(); }
vector<uint32_t> m_features;
m2::RectD m_rect;
unique_ptr<ProjectionOnStreetCalculator> m_calculator;
/// @todo Cache GetProjection results for features here, because
/// feature::GetCenter and ProjectionOnStreetCalculator::GetProjection are not so fast.
DISALLOW_COPY(Street);
};
StreetVicinityLoader(int scale, double offsetMeters);
void SetContext(MwmContext * context);
// Calls |fn| on each index in |sortedIds| where sortedIds[index]
// belongs to the street's vicinity.
template <typename TFn>
void ForEachInVicinity(uint32_t streetId, vector<uint32_t> const & sortedIds, double offsetMeters,
TFn const & fn)
{
// Passed offset param should be less than the cached one, or the cache is invalid otherwise.
ASSERT_LESS_OR_EQUAL(offsetMeters, m_offsetMeters, ());
Street const & street = GetStreet(streetId);
if (street.IsEmpty())
return;
ProjectionOnStreetCalculator const & calculator = *street.m_calculator;
ProjectionOnStreet proj;
for (uint32_t id : street.m_features)
{
// Load center and check projection only when |id| is in |sortedIds|.
if (!binary_search(sortedIds.begin(), sortedIds.end(), id))
continue;
FeatureType ft;
if (!m_context->GetFeature(id, ft))
continue; // Feature was deleted.
if (calculator.GetProjection(feature::GetCenter(ft, FeatureType::WORST_GEOMETRY), proj) &&
proj.m_distMeters <= offsetMeters)
{
fn(id);
}
}
}
void OnQueryFinished();
Street const & GetStreet(uint32_t featureId);
private:
void LoadStreet(uint32_t featureId, Street & street);
MwmContext * m_context;
int m_scale;
double const m_offsetMeters;
Cache<uint32_t, Street> m_cache;
DISALLOW_COPY_AND_MOVE(StreetVicinityLoader);
};
} // namespace search
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