BasicMultiVertexState.h

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#ifndef BasicMultiVertexState_H
#define BasicMultiVertexState_H

#include "RecoVertex/VertexPrimitives/interface/BasicVertexState.h"
#include "RecoVertex/VertexPrimitives/interface/VertexState.h"
#include "RecoVertex/GaussianSumVertexFit/interface/MultiVertexStateCombiner.h"

class BasicMultiVertexState final : public BasicVertexState {
public:
  BasicMultiVertexState() : valid(false) {}

  BasicMultiVertexState(const std::vector<VertexState>& vsComp);

  pointer clone() const override { return build<BasicMultiVertexState>(*this); }

  GlobalPoint position() const override;

  double time() const override;

  GlobalError error() const override;

  double timeError() const override;

  GlobalError error4D() const override;

  GlobalWeight weight() const override;

  GlobalWeight weight4D() const override;

  AlgebraicVector3 weightTimesPosition() const override;

  AlgebraicVector4 weightTimesPosition4D() const override;

  double weightInMixture() const override;

  std::vector<VertexState> components() const override { return theComponents; }

  bool isValid() const override { return valid; }

  bool is4D() const override {
    checkCombinedState();
    return theCombinedState.is4D();
  }

private:
  void checkCombinedState() const;

  bool valid;
  mutable std::vector<VertexState> theComponents;
  mutable VertexState theCombinedState;
  mutable bool theCombinedStateUp2Date;

  MultiVertexStateCombiner theCombiner;
};

#endif