SimpleClusterCreationAlgorithm.h

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#ifndef LAR_SIMPLE_CLUSTER_CREATION_ALGORITHM_H
#define LAR_SIMPLE_CLUSTER_CREATION_ALGORITHM_H 1

#include "Pandora/Algorithm.h"

#include <unordered_map>

namespace lar_content
{

class SimpleClusterCreationAlgorithm : public pandora::Algorithm
{
public:
    SimpleClusterCreationAlgorithm();

private:
    pandora::StatusCode Run();

    typedef std::unordered_map<const pandora::CaloHit*, pandora::CaloHitList> HitAssociationMap;

    void SelectCaloHits(const pandora::CaloHitList *const pInputList, pandora::CaloHitList &outputList) const;

    void BuildAssociationMap(const pandora::CaloHitList &caloHitList, HitAssociationMap &hitAssociationMap) const;

    void CreateClusters(const pandora::CaloHitList &caloHitList, const HitAssociationMap &hitAssociationMap) const;

    void CollectAssociatedHits(const pandora::CaloHit *const pSeedCaloHit, const pandora::CaloHit *const pCurrentCaloHit,
        const HitAssociationMap &hitAssociationMap, const pandora::CaloHitSet &vetoList, pandora::CaloHitList &mergeList) const;

    pandora::StatusCode ReadSettings(const pandora::TiXmlHandle xmlHandle);

    float   m_clusteringWindowSquared;      
};

} // namespace lar_content

#endif // #ifndef LAR_SIMPLE_CLUSTER_CREATION_ALGORITHM_H