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TiltedCylinderBL.H

Go to the documentation of this file.

/* _______              __
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//
// This software is copyright (C) by the Lawrence Berkeley
// National Laboratory.  Permission is granted to reproduce
// this software for non-commercial purposes provided that
// this notice is left intact.
// 
// It is acknowledged that the U.S. Government has rights to
// this software under Contract DE-AC03-765F00098 between
// the U.S.  Department of Energy and the University of
// California.
//
// This software is provided as a professional and academic
// contribution for joint exchange. Thus it is experimental,
// is provided ``as is'', with no warranties of any kind
// whatsoever, no support, no promise of updates, or printed
// documentation. By using this software, you acknowledge
// that the Lawrence Berkeley National Laboratory and
// Regents of the University of California shall have no
// liability with respect to the infringement of other
// copyrights by any part of this software.
//

#ifndef _TiltedCylinderBL_H_
#define _TiltedCylinderBL_H_

#include "MayDay.H"
#include "LoHiSide.H"
#include "IntVect.H"
#include "RealVect.H"
#include "BaseLevelSet.H"
#include "REAL.H"
#include "BoxIterator.H"
using std::pair;

/*
   This is the workshop class for a TiltedCylinder.
   It follows the BaseLocalGeometry base class.
   the center goes through the lower left corner of the domain
   Returns C_z+sqrt (radius-(x-C_x)squared+(y-C_y)squared));
 */
class TiltedCylinderBL: public BaseLevelSet
{
public:

  TiltedCylinderBL(const Real&     a_radius,
                   const RealVect& a_axisDir,
                   const Real&     a_dx);

  virtual ~TiltedCylinderBL();

  
  /*
      Return true if every cell in region is regular at the
      refinement described by dx.
  */
  virtual bool isRegular(const Box&      a_region,
                         const Box&      a_domain,
                         const RealVect& a_origin,
                         const Real&     a_dx) const;

  /* 
      Return true if every cell in region is covered at the
      refinement described by dx.
  */
  virtual bool isCovered(const Box&      a_region,
                         const Box&      a_domain,
                         const RealVect& a_origin,
                         const Real&     a_dx) const;

  /*
     This returns the signed integer which  most closely
     represents the normal direction.  The first integer
     of the pair is of the interface at an irregular cell
     (which coordinate direction has the largest normal component). 
     This will only be called if the cell is irregular.
   */
  virtual pair<int, Side::LoHiSide> upDirection(const RealVect& a_midpt,const IntVect& a_iv) const; 

  
  //     Return the value at the dependent coordinate given the independent
  //  coordinates. Returns C_z+sqrt (radius-(x-C_x)squared+(y-C_y)squared));
  //  Where the center is (C_x,C_y,C_z)
  
  virtual Real localFuncValue(const RealVect& a_independentCoords, 
                              const int&      a_upDirection,
                              const IntVect&  a_iv, 
                              const Box&      a_domain, 
                              const RealVect& a_origin, 
                              const Real&     a_dx) const;  
  
  //   Return a newly allocated derived class.  The responsibility
  //  for deleting the memory is left to the calling function.
  
  virtual BaseLevelSet* new_baseLevelSet() const;   
 
  RealVect getCenterPt(const RealVect& a_vec) const;

protected:
  Real LevelSurface(const RealVect& a_vec) const;

  RealVect m_center;
  RealVect m_axis;
  Real     m_radius;
  Real     m_dx;
  RealVect m_ellipseCoeffs;
  int      m_primaryAxisDir;
  Tuple<int, CH_SPACEDIM-1>  m_tanDirs;
  
private:
  TiltedCylinderBL()
  {
    MayDay::Error("TiltedCylinderBL uses strong construction");
  }

  TiltedCylinderBL(const TiltedCylinderBL& a_radius)
  {
    MayDay::Error("TiltedCylinderBL disallows copy construction");
  }

  void operator=(const TiltedCylinderBL& a_radius)
  {
    MayDay::Error("TiltedCylinderBL disallows assignment");
  }
};

#endif

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