lar_content::TrackRefinementBaseAlgorithm::SortByDistanceAlongLine Class Reference

SortByDistanceAlongLine class. More...

#include <TrackRefinementBaseAlgorithm.h>

Public Member Functions
	SortByDistanceAlongLine (const pandora::CartesianVector &startPoint, const pandora::CartesianVector &lineDirection, const bool hitWidthMode)
	Constructor. More...
bool	operator() (const pandora::CaloHit *const pLhs, const pandora::CaloHit *const pRhs) const
	Sort hits by their projected distance along a line from a start point. More...

Private Attributes
pandora::CartesianVector	m_startPoint
	The line start point. More...
pandora::CartesianVector	m_lineDirection
	The line end point. More...
bool	m_hitWidthMode
	Wether to consider hit widths or not. More...

Detailed Description

SortByDistanceAlongLine class.

Definition at line 36 of file TrackRefinementBaseAlgorithm.h.

Constructor & Destructor Documentation

lar_content::TrackRefinementBaseAlgorithm::SortByDistanceAlongLine::SortByDistanceAlongLine ( const pandora::CartesianVector &  startPoint, const pandora::CartesianVector &  lineDirection, const bool  hitWidthMode  )

inline

Constructor.

Parameters

startPoint	the line start point
lineDirection	the line direction unit vector
hitWidthMode	whether to consider hit widths or not

Definition at line 323 of file TrackRefinementBaseAlgorithm.h.

                                                                                                                    :
    m_startPoint(startPoint),
    m_lineDirection(lineDirection.GetUnitVector()),
    m_hitWidthMode(hitWidthMode)
{
}

Member Function Documentation

bool lar_content::TrackRefinementBaseAlgorithm::SortByDistanceAlongLine::operator()	(	const pandora::CaloHit *const	pLhs,
		const pandora::CaloHit *const	pRhs
	)		const

Sort hits by their projected distance along a line from a start point.

Parameters

pLhs	the address of the first hit
pRhs	the address of the second hit

Returns

whether lhs hit has a smaller projected distance along the line than rhs hit

Definition at line 871 of file TrackRefinementBaseAlgorithm.cc.

{
    const CartesianVector lhsHitPosition(
        m_hitWidthMode ? LArHitWidthHelper::GetClosestPointToLine2D(m_startPoint, m_lineDirection, pLhs) : pLhs->GetPositionVector());

    const CartesianVector rhsHitPosition(
        m_hitWidthMode ? LArHitWidthHelper::GetClosestPointToLine2D(m_startPoint, m_lineDirection, pRhs) : pRhs->GetPositionVector());

    const float lhsLongitudinal = m_lineDirection.GetDotProduct(lhsHitPosition - m_startPoint);
    const float rhsLongitudinal = m_lineDirection.GetDotProduct(rhsHitPosition - m_startPoint);

    if (std::fabs(lhsLongitudinal - rhsLongitudinal) > std::numeric_limits<float>::epsilon())
    {
        // ATTN: Order from closest to furthest away
        return (lhsLongitudinal < rhsLongitudinal);
    }

    // ATTN: To deal with tiebreaks
    return LArClusterHelper::SortHitsByPulseHeight(pLhs, pRhs);
}

Member Data Documentation

bool lar_content::TrackRefinementBaseAlgorithm::SortByDistanceAlongLine::m_hitWidthMode

private

Wether to consider hit widths or not.

Definition at line 61 of file TrackRefinementBaseAlgorithm.h.

pandora::CartesianVector lar_content::TrackRefinementBaseAlgorithm::SortByDistanceAlongLine::m_lineDirection

private

The line end point.

Definition at line 60 of file TrackRefinementBaseAlgorithm.h.

pandora::CartesianVector lar_content::TrackRefinementBaseAlgorithm::SortByDistanceAlongLine::m_startPoint

private

The line start point.

Definition at line 59 of file TrackRefinementBaseAlgorithm.h.

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The documentation for this class was generated from the following files:

• larpandoracontent/larpandoracontent/LArTwoDReco/LArCosmicRay/TrackRefinementBaseAlgorithm.h
• larpandoracontent/larpandoracontent/LArTwoDReco/LArCosmicRay/TrackRefinementBaseAlgorithm.cc