FastCircle.h

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#ifndef TR_FastCircle_H_
#define TR_FastCircle_H_
#include "DataFormats/GeometryVector/interface/GlobalPoint.h"
#include "DataFormats/Math/interface/AlgebraicROOTObjects.h"
#include "FWCore/Utilities/interface/Visibility.h"
 
class FastCircle {
public:
  FastCircle(const GlobalPoint& outerHit, const GlobalPoint& middleHit, const GlobalPoint& aVertex);
 
  FastCircle(const GlobalPoint& outerHit, const GlobalPoint& middleHit, const GlobalPoint& aVertex, double norm);
 
  ~FastCircle() {}
 
  // all returned values have dimensions of cm
  // parameters of the circle (circle is valid)
  double x0() const { return theX0; }
 
  double y0() const { return theY0; }
 
  double rho() const { return theRho; }
 
  bool isValid() const { return theValid; }
 
  bool isLine() const { return theIsLine; }
 
  // parameters of the straight line
  // (if circle is invalid only these are available)
  double n1() const { return theN1; }
 
  double n2() const { return theN2; }
 
  double c() const { return theC; }
 
  GlobalPoint const& outerPoint() const { return theOuterPoint; }
  GlobalPoint const& innerPoint() const { return theInnerPoint; }
  GlobalPoint const& vertexPoint() const { return theVertexPoint; }
 
private:
  GlobalPoint theOuterPoint;
  GlobalPoint theInnerPoint;
  GlobalPoint theVertexPoint;
  double theNorm;
 
  double theX0;
  double theY0;
  double theRho;
 
  double theN1;
  double theN2;
  double theC;
 
  bool theValid;
  bool theIsLine;
 
  void createCircleParameters() dso_hidden;
};
 
#endif  //TR_Circle_H_