//-----------------------------------------------------------
// File and Version Information:
// $Id$
//
// Description:
//      Detector plane - a geometric object
//
//
// Environment:
//      Software developed for the PANDA Detector at FAIR.
//
// Author List:
//      Sebastian Neubert    TUM            (original author)
//
//
//-----------------------------------------------------------

#ifndef DETPLANE_HH
#define DETPLANE_HH

// Base Class Headers ----------------


// Collaborating Class Headers -------
#include "TVector3.h"

// Collaborating Class Declarations --



class DetPlane {
public:

  // Constructors/Destructors ---------
  DetPlane(){;}
  DetPlane(const TVector3& o,
	   const TVector3& u,
	   const TVector3& v);
  ~DetPlane(){;}

  // Operators
  

  // Accessors -----------------------
  TVector3 getO() const {return _o;}
  TVector3 getU() const {return _u;}
  TVector3 getV() const {return _v;}

  // Modifiers -----------------------
  void set(const TVector3& o,
	   const TVector3& u,
	   const TVector3& v); 

  void setO(const TVector3& o);
  void setU(const TVector3& u);
  void setV(const TVector3& v);

  // Operations ----------------------
  TVector3 getNormal();
  // projecting a direction into the plane:
  TVector2 project(const TVector3& x);
  // transform from Lab system into plane
  TVector2 LabToPlane(const TVector3& x);

  void Print() const;

private:

  // Private Data Members ------------
  // origin
  TVector3 _o;
  // Vectors spanning the plane
  TVector3 _u;
  TVector3 _v;

  // Private Methods -----------------

  void sane(); // ensures orthnormal coordinates
};

#endif

//--------------------------------------------------------------
// $Log$
//--------------------------------------------------------------