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46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
#include "search/features_filter.hpp"
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#include "search/cbv.hpp"
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namespace search
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{
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// FeaturesFilter ----------------------------------------------------------------------------------
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FeaturesFilter::FeaturesFilter(CBV const & filter, uint64_t threshold)
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: m_filter(filter), m_threshold(threshold)
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{
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}
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bool FeaturesFilter::NeedToFilter(CBV const & cbv) const
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{
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if (cbv.IsFull())
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return true;
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return cbv.PopCount() > m_threshold;
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}
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// LocalityFilter ----------------------------------------------------------------------------------
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LocalityFilter::LocalityFilter(CBV const & filter)
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: FeaturesFilter(filter, 0 /* threshold */)
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{
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}
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CBV LocalityFilter::Filter(CBV const & cbv) const
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{
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return m_filter.Intersect(cbv);
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}
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// ViewportFilter ----------------------------------------------------------------------------------
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ViewportFilter::ViewportFilter(CBV const & filter, uint64_t threshold)
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: FeaturesFilter(filter, threshold)
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{
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}
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CBV ViewportFilter::Filter(CBV const & cbv) const
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{
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auto result = m_filter.Intersect(cbv);
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if (!result.IsEmpty())
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return result;
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return cbv.Take(m_threshold);
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}
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} // namespace search
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