ParametersToParametersDerivatives.h

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#ifndef Alignment_CommonAlignmentParametrization_ParametersToParametersDerivatives_h
#define Alignment_CommonAlignmentParametrization_ParametersToParametersDerivatives_h


#include "DataFormats/Math/interface/AlgebraicROOTObjects.h"
#include "TMatrixD.h"

class Alignable;

class ParametersToParametersDerivatives {
public:
  ParametersToParametersDerivatives(const Alignable &component, const Alignable &mother);

  bool isOK() const { return isOK_; }

  double operator()(unsigned int indParMother, unsigned int indParComp) const;

  // Not this - would make the internals public:
  //  const TMatrixD& matrix() const { return derivatives_;}

private:
  bool init(const Alignable &component, int typeComponent, const Alignable &mother, int typeMother);
  bool initRigidRigid(const Alignable &component, const Alignable &mother);
  bool initBowedRigid(const Alignable &component, const Alignable &mother);
  bool init2BowedRigid(const Alignable &component, const Alignable &mother);

  typedef ROOT::Math::SMatrix<double, 6, 9, ROOT::Math::MatRepStd<double, 6, 9>> AlgebraicMatrix69;
  AlgebraicMatrix69 dRigid_dBowed(const AlgebraicMatrix66 &dRigidM2dRigidC, double halfWidth, double halfLength);

  bool isOK_;             
  TMatrixD derivatives_;  
};

#endif