G4BezierSurface.hh

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// $Id$
//
// ----------------------------------------------------------------------
// Class G4BezierSurface
//
// Class description:
// 
// Definition of a generic Bezier surface.
 
// Authors: J.Sulkimo, P.Urban.
// Revisions by: L.Broglia, G.Cosmo.
// ----------------------------------------------------------------------
#ifndef __BEZIERSURFACE_H
#define __BEZIERSURFACE_H
 
#include "G4Ray.hh"
#include "G4ControlPoints.hh"
#include "G4SurfaceList.hh"
#include "G4PointRat.hh"
#include "G4OsloMatrix.hh"
#include "G4KnotVector.hh"     
 
class G4ProjectedSurface;
 
class G4BezierSurface : public G4Surface
{
  friend class G4BSplineSurface;
  friend class G4ProjectedSurface; 
   
public:  // with description
  
  G4BezierSurface();
  virtual ~G4BezierSurface();
    // Constructor & destructor
 
  inline G4Point3D AveragePoint() const;
  inline void SetAveragePoint(G4Point3D p);
 
  inline G4double UAverage() const;
  inline G4double VAverage() const;
 
  inline void Dir(G4int d);
  inline void ChangeDir();
 
  inline G4double SMin() const;
  inline G4double SMax() const;
 
  inline G4int GetOrder(G4int direction) const;
  inline void PutOrder(G4int direction, G4int value);
 
  inline G4double GetU() const;
  inline G4double GetV() const;
 
  void CalcBBox();
 
  G4int BIntersect(G4SurfaceList&);
 
  G4int ClipBothDirs();
  void ClipSurface();
 
  virtual G4Vector3D SurfaceNormal(const G4Point3D& Pt) const;
 
  friend void CopySurface(G4BezierSurface& bez);
 
protected:  // without description
 
  G4SurfaceList* bezier_list;
 
  static G4int Clips;
  static G4int Splits;    
  static G4double Tolerance;
    // Test variables 
 
private:
 
  void CalcAverage();
  void CalcDistance(const G4Point3D&);
  void SetValues();
  inline void LocalizeClipValues();
 
  void SplitNURBSurface();
  void GetClippedRegionFromSurface();
  void RefineSurface();
  void CalcOsloMatrix();
  void MapSurface(G4Surface*);
 
  inline G4double Findzero(G4double x0, G4double x1,
                           G4double y0, G4double y1) const;
  inline G4int Sign(G4double a) const;
    // For ClipSurface...
 
  inline G4int Amax(G4int i, G4int j) const;
  inline G4int Amin(G4int i, G4int j) const;
  inline G4int AhIndex(G4int j, G4int t, G4int iorder) const;
    // For calc_G4OsloMatrix...
 
private:
 
  G4BezierSurface(const G4BezierSurface&);
  G4BezierSurface& operator=(const G4BezierSurface &);
    // Private copy constructor and assignment operator.
 
private:
 
  G4int           order[2];
  G4double        smin;
  G4double        smax;
  G4Point3D       line;
  G4double        average_u;
  G4double        average_v;
  G4Point3D       average_pt;
  G4int           dir;    
  G4KnotVector    *u_knots;
  G4KnotVector    *v_knots;
  G4ControlPoints *ctl_points;
  
  G4KnotVector     *new_knots;
  G4int            ord;
  G4OsloMatrix     * oslo_m;
  G4int            lower,upper;
  G4double         u[2];
  G4double         v[2];
  G4double         u_min;
  G4double         u_max;
  G4double         v_min;
  G4double         v_max;
  G4ControlPoints* old_points;  
 
};
 
#include "G4BezierSurface.icc"
 
#endif