// -------------------------------------------------------------------------
// -----                  CbmSttGeomPoint header file                  -----
// -----                  Created 30/03/06  by R. Castelijns           -----
// -------------------------------------------------------------------------

#ifndef CBMSTTGEOMPOINT_H
#define CBMSTTGEOMPOINT_H 1

#include "math.h"

#include "TObject.h"
#include "TCanvas.h"

class CbmSttGeomHelix;
class CbmSttGeomLine;
class CbmSttGeomCircle;

class CbmSttGeomPoint : public TObject
{
 public:
    /** Default constructor **/
    CbmSttGeomPoint();
    
    /** Standard constructor **/
    CbmSttGeomPoint(Double_t x, Double_t y, Double_t z, Double_t dx = 0., Double_t dy = 0., Double_t dz = 0.);

    /** Copy constructor **/
    CbmSttGeomPoint(CbmSttGeomPoint const &other);

    /** Destructor **/
    virtual ~CbmSttGeomPoint();

    Double_t GetX() const {return fX;}
    Double_t GetY() const {return fY;}
    Double_t GetZ() const {return fZ;}

    void SetX(Double_t newX) {fX = newX;}
    void SetY(Double_t newY) {fY = newY;}
    void SetZ(Double_t newZ) {fZ = newZ;}

    Double_t GetErrorX() const {return fErrorX;}
    Double_t GetErrorY() const {return fErrorY;}
    Double_t GetErrorZ() const {return fErrorZ;}

    void SetErrorX(Double_t newErrorX) {fErrorX = newErrorX;}
    void SetErrorY(Double_t newErrorY) {fErrorY = newErrorY;}
    void SetErrorZ(Double_t newErrorZ) {fErrorZ = newErrorZ;}

    Bool_t Is2D() const;
    Bool_t IsBetween(CbmSttGeomPoint thisCenter, CbmSttGeomPoint otherCenter) const;
    void Transform(Double_t x, Double_t y, Double_t z);

    Double_t DistanceTo(CbmSttGeomHelix myHelix) const; 
    Double_t DistanceTo(CbmSttGeomPoint myPoint) const;
    Double_t DistanceTo(CbmSttGeomLine myLine) const;

    void Transform();
    void Draw(Double_t size = 0.5, Int_t color = 1) const;

    void operator=(CbmSttGeomPoint const &other);

 private:
    Double_t fX;
    Double_t fY;
    Double_t fZ;

    Double_t fErrorX;
    Double_t fErrorY;
    Double_t fErrorZ;

    void Copy(CbmSttGeomPoint const &other);
    void Destroy();

    ClassDef(CbmSttGeomPoint,1);
};


#endif