CartesianTrajectoryError.h

Go to the documentation of this file.

#ifndef _TRACKER_CARTESIANTRAJECTORYERROR_H_
#define _TRACKER_CARTESIANTRAJECTORYERROR_H_
 
#include "DataFormats/Math/interface/AlgebraicROOTObjects.h"
#include "DataFormats/GeometryCommonDetAlgo/interface/GlobalError.h"
 
class CartesianTrajectoryError {
public:
  // construct
  CartesianTrajectoryError() {}
 
  CartesianTrajectoryError(const AlgebraicSymMatrix66& aCovarianceMatrix) : theCovarianceMatrix(aCovarianceMatrix) {}
 
  // access
 
  const AlgebraicSymMatrix66& matrix() const { return theCovarianceMatrix; }
 
  void operator*=(double factor) { theCovarianceMatrix *= factor; }
 
 
  const GlobalError position() const { return GlobalError(theCovarianceMatrix.Sub<AlgebraicSymMatrix33>(0, 0)); }
 
private:
  AlgebraicSymMatrix66 theCovarianceMatrix;
};
 
#endif