rangesIntersect.h File Reference

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Functions
template<class Range >
bool	rangesIntersect (const Range &a, const Range &b)
template<class Range , class Less >
bool	rangesIntersect (const Range &a, const Range &b, const Less &less)

Function Documentation

rangesIntersect() [1/2]

template<class Range >

bool rangesIntersect ( const Range &  a, const Range &  b  )

inline

Utility for checking efficiently if two one-dimantional intervals intersect. Precondition: the intervals are not empty, i.e. for i in a,b i.first <= i.second. The Range template argument is expected to have the std::pair interface, i.e. for Range instance r r.first is the beginning of the interval and r.second is the end of the interval.

Definition at line 14 of file rangesIntersect.h.

                                                             {
  if ( a.first > b.second || b.first > a.second) return false;
  else return true;
}

References a, and b.

Referenced by LayerCollector::allLayers(), OuterDetCompatibility::checkPhi(), OuterDetCompatibility::checkR(), OuterDetCompatibility::checkZ(), PixelRecoRange< float >::hasIntersection(), barrelUtil::overlap(), tkDetUtil::overlapInPhi(), and StartingLayerFinder::startingLayers().

rangesIntersect() [2/2]

template<class Range , class Less >

bool rangesIntersect ( const Range &  a, const Range &  b, const Less &  less  )

inline

Definition at line 20 of file rangesIntersect.h.

                                   {
  if ( less(b.second,a.first) || less(a.second,b.first)) return false;
  else return true;
}

References a, and b.