// This code implementation is the intellectual property of
// the GEANT4 collaboration.
//
// By copying, distributing or modifying the Program (or any work
// based on the Program) you indicate your acceptance of this statement,
// and all its terms.
//
// $Id: G4ControlPoints.hh,v 1.5 2000/11/08 14:22:00 gcosmo Exp $
// GEANT4 tag $Name: geant4-03-00 $
//
// ----------------------------------------------------------------------
// Class G4ControlPoints
//
// Class Description:
//
// G4ControlPoints defines an array of G4PointRat which in turn
// are made of G4Point3D.

// Author: J.Sulkimo, P.Urban.
// Revisions by: A.Floquet, L.Broglia, G.Cosmo.
// ----------------------------------------------------------------------
#ifndef __G4ControlPoints_h
#define __G4ControlPoints_h 1

#include "G4PointRat.hh"

class G4ControlPoints 
{
public:  // with description

  G4ControlPoints();
  G4ControlPoints( G4int, G4int);
  G4ControlPoints( G4int, G4int, G4int );
  G4ControlPoints( const G4ControlPoints& );
    // Constructors.

  ~G4ControlPoints();
    // Destructor.

  G4ControlPoints& operator = ( const G4ControlPoints& );
    // Assignment operator.

  void SetWeights(G4double*);
   
  void CalcValues(G4double k1, G4double param, G4Point3D& pts1,
		  G4double k2, G4Point3D& pts2);
  void CalcValues(G4double k1, G4double param, G4PointRat& pts1,
		  G4double k2, G4PointRat& pts2);
  
  inline G4int GetRows() const;
  inline G4int GetCols() const;
  
  inline void put(G4int i, G4int j, const G4Point3D &tmp);
  inline void put(G4int i, G4int j, const G4PointRat& tmp);
    // Put control point into matrix location (i,j).

  inline G4Point3D Get3D(G4int i, G4int j) const;
  inline G4PointRat& GetRat(G4int i, G4int j) const;
    // Retrieve control point from matrix location (i,j);

  G4double ClosestDistanceToPoint(const G4Point3D&);


private:				      
    
  inline G4double Calc(G4double k1, G4double par, G4double old_val,
                       G4double k2, G4double new_val );

  G4PointRat** data;
    // G4PointRat datas are made of
    // - a point 3D
    // - an additional value: the scale factor which is set to 1 by default.

  G4int nr, nc;
};

#include "G4ControlPoints.icc"

#endif