Muc/MucGeomSvc/include/MucGeomSvc/MucGeometron.h

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//$id$
//
//$log$
 
/*
 *    2003/08/30   Zhengyun You     Peking University
 *
 *    2004/09/09   Zhengyun You     Peking University
 *                 transplanted to Gaudi framework
 */
 
#ifndef MUC_GEOMETRON_H
#define MUC_GEOMETRON_H
 
#include <CLHEP/Geometry/Plane3D.h>
#include <CLHEP/Geometry/Point3D.h>
#include <CLHEP/Vector/ThreeVector.h>
 
#ifndef ENABLE_BACKWARDS_COMPATIBILITY
typedef HepGeom::Point3D<double> HepPoint3D;
#endif
#ifndef ENABLE_BACKWARDS_COMPATIBILITY
typedef HepGeom::Vector3D<double> HepVector3D;
#endif
#ifndef ENABLE_BACKWARDS_COMPATIBILITY
typedef HepGeom::Plane3D<double> HepPlane3D;
#endif
 
using namespace CLHEP;
 
/**
 * Class MucGeometron contains some geometry calculation for convenience.
 *
 * @author Zhengyun You \URL{mailto:youzy@pku.edu.cn}
 *
 */
 
class MucGeometron {
public:
  /// Constructor.
  MucGeometron();
 
  /// Destructor.
  ~MucGeometron();
 
  /// Get intersection of a line and a plane.
  bool GetIntersectionLinePlane( const HepPoint3D pLine, const Hep3Vector vectLine,
                                 const HepPlane3D plane, HepPoint3D& cross );
 
  bool GetIntersectionLinePlaneWithSigma( const HepPoint3D pLine, const Hep3Vector vectLine,
                                          const HepPoint3D pLineSigma,
                                          const Hep3Vector vectLineSigma,
                                          const HepPlane3D plane, HepPoint3D& cross,
                                          HepPoint3D& crossSigma );
 
  bool GetIntersectionQuadPlaneLocal( const int   part, // liangyt 2009.3.12
                                      const int   orient,
                                      const float a, // y = a * x * x + b * x + c;
                                      const float b, const float c, const HepPlane3D plane,
                                      HepPoint3D& cross1, HepPoint3D& cross2 );
 
  bool GetIntersectionQuadPlane( const HepPoint3D pLine, // liangyt 2007.4.9
                                 const float vy, const float y0,
                                 const float a, // y = a * x * x + b * x + c;
                                 const float b, const float c, const HepPlane3D plane,
                                 HepPoint3D& cross1, HepPoint3D& cross2 );
 
private:
};
 
#endif /* MUC_GEOMETRON_H */