#include <SpecialCylindricalMFGrid.h>

Inheritance diagram for SpecialCylindricalMFGrid:

Public Member Functions
virtual void	dump () const
virtual LocalPoint	fromGridFrame (double a, double b, double c) const
	find grid coordinates for point. For debugging and validation only.
	SpecialCylindricalMFGrid (binary_ifstream &istr, const GloballyPositioned< float > &vol, int gridType)
virtual void	toGridFrame (const LocalPoint &p, double &a, double &b, double &c) const
	find grid coordinates for point. For debugging and validation only.
virtual LocalVector	uncheckedValueInTesla (const LocalPoint &p) const
	Interpolated field value at given point; does not check for exceptions.
Private Member Functions
double	startingPoint (double sinPhi) const
double	stepSize (double sinPhi) const
Private Attributes
bool	sector1
double	startConstTerm_
double	startPhiTerm_
double	stepConstTerm_
double	stepPhiTerm_

Detailed Description

Interpolator for cylindrical grids type 5 or 6 (r,phi,z) 1/sin(phi) or 1/cos(phi)

Date:: 2011/04/16 12:47:37

Revision:: 1.3

Author:: T. Todorov - updated 08 N. Amapane

Definition at line 19 of file SpecialCylindricalMFGrid.h.

Constructor & Destructor Documentation

SpecialCylindricalMFGrid::SpecialCylindricalMFGrid	(	binary_ifstream &	istr,
		const GloballyPositioned< float > &	vol,
		int	gridType
	)

Constructor. gridType = 5 => 1/sin(phi); i.e. master sector is #4 gridType = 6 => 1/cos(phi); i.e. master sector is #1

Definition at line 10 of file SpecialCylindricalMFGrid.cc.

References gather_cfg::cout, MFGrid::frame(), MFGrid3D::grid_, i, submitDQMOfflineCAF::nLines, sector1, startConstTerm_, startPhiTerm_, stepConstTerm_, stepPhiTerm_, GloballyPositioned< T >::toLocal(), PV3DBase< T, VectorTag, FrameTag >::x(), PV3DBase< T, VectorTag, FrameTag >::y(), and PV3DBase< T, VectorTag, FrameTag >::z().

  : MFGrid3D(vol)
{
  if (gridType == 5 ) {
    sector1 = false;
  } else if (gridType == 6 ) {
    sector1 = true;
  } else {
    cout << "ERROR wrong SpecialCylindricalMFGrid type " << gridType << endl;
    sector1 = false;
  }

  int n1, n2, n3;
  inFile >> n1 >> n2 >> n3;
#ifdef DEBUG_GRID
  cout << "n1 " << n1 << " n2 " << n2 << " n3 " << n3 << endl;
#endif
  double xref, yref, zref;
  inFile >> xref >> yref >> zref;
  double stepx, stepy, stepz;
  inFile >> stepx    >> stepy    >> stepz;

  double RParAsFunOfPhi[4];  // R = f(phi) or const. (0,2: const. par. ; 1,3: const./sin(phi));
  inFile >> RParAsFunOfPhi[0] >> RParAsFunOfPhi[1] >> RParAsFunOfPhi[2] >> RParAsFunOfPhi[3];

  vector<BVector> fieldValues;
  float Bx, By, Bz;
  int nLines = n1*n2*n3;
  fieldValues.reserve(nLines);
  for (int iLine=0; iLine<nLines; ++iLine){
    inFile >> Bx >> By >> Bz;
    // This would be fine only if local r.f. has the axes oriented as the global r.f.
    // For this volume we know that the local and global r.f. have different axis
    // orientation, so we do not try to be clever.
    //    fieldValues.push_back(BVector(Bx,By,Bz));
    
    // Preserve double precision!
    Vector3DBase<double, LocalTag>  lB = frame().toLocal(Vector3DBase<double, GlobalTag>(Bx,By,Bz));
    fieldValues.push_back(BVector(lB.x(), lB.y(), lB.z()));
  }
  // check completeness
  string lastEntry;
  inFile >> lastEntry;
  if (lastEntry != "complete"){
    cout << "ERROR during file reading: file is not complete" << endl;
  }

  GlobalPoint grefp( GlobalPoint::Cylindrical( xref, yref, zref));

#ifdef DEBUG_GRID
  LocalPoint lrefp = frame().toLocal( grefp);
  cout << "Grid reference point in grid system: " << xref << "," << yref << "," << zref << endl;
  cout << "Grid reference point in global x,y,z: " << grefp << endl;
  cout << "Grid reference point in local x,y,z: " << lrefp << endl;
  cout << "steps " << stepx << "," <<  stepy << "," << stepz << endl;
  cout << "RParAsFunOfPhi[0...4] = ";
  for (int i=0; i<4; ++i) cout << RParAsFunOfPhi[i] << " "; cout << endl;
#endif

  Grid1D gridX( 0, n1-1, n1); // offset and step size not constant
  Grid1D gridY( yref, yref + stepy*(n2-1), n2);
  Grid1D gridZ( grefp.z(), grefp.z() + stepz*(n3-1), n3);

  grid_ = GridType( gridX, gridY, gridZ, fieldValues);

  stepConstTerm_ = (RParAsFunOfPhi[0] - RParAsFunOfPhi[2]) / (n1-1);
  stepPhiTerm_   = (RParAsFunOfPhi[1] - RParAsFunOfPhi[3]) / (n1-1);
  startConstTerm_ = RParAsFunOfPhi[2];
  startPhiTerm_   = RParAsFunOfPhi[3];

  // Activate/deactivate timers
//   static SimpleConfigurable<bool> timerOn(false,"MFGrid:timing");
//   (*TimingReport::current()).switchOn("MagneticFieldProvider::valueInTesla(SpecialCylindricalMFGrid)",timerOn);
}

Member Function Documentation

void SpecialCylindricalMFGrid::dump ( void ) const [virtual]

Reimplemented from MFGrid.

Definition at line 101 of file SpecialCylindricalMFGrid.cc.

{}

MFGrid::LocalPoint SpecialCylindricalMFGrid::fromGridFrame	(	double	a,
		double	b,
		double	c
	)		const `[virtual]`

find grid coordinates for point. For debugging and validation only.

Implements MFGrid.

Definition at line 104 of file SpecialCylindricalMFGrid.cc.

References funct::cos(), MFGrid::frame(), dttmaxenums::R, sector1, funct::sin(), startingPoint(), stepSize(), and GloballyPositioned< T >::toLocal().

{
  double sinPhi; // sin or cos depending on wether we are at phi=0 or phi=pi/2
  if (sector1) {
    sinPhi = cos(b);
  } else {
    sinPhi = sin(b);
  }
  
  double R = a*stepSize(sinPhi) + startingPoint(sinPhi);
  // "OLD" convention of phi.
  //  GlobalPoint gp( GlobalPoint::Cylindrical(R, Geom::pi() - b, c));
  GlobalPoint gp( GlobalPoint::Cylindrical(R, b, c));
  return frame().toLocal(gp);
}

double SpecialCylindricalMFGrid::startingPoint ( double sinPhi ) const [inline, private]

Definition at line 47 of file SpecialCylindricalMFGrid.h.

Referenced by fromGridFrame(), and toGridFrame().

{return startConstTerm_ + startPhiTerm_/sinPhi;}

double SpecialCylindricalMFGrid::stepSize ( double sinPhi ) const [inline, private]

Definition at line 46 of file SpecialCylindricalMFGrid.h.

Referenced by fromGridFrame(), and toGridFrame().

{return stepConstTerm_ + stepPhiTerm_ /sinPhi;}

void SpecialCylindricalMFGrid::toGridFrame	(	const LocalPoint &	p,
		double &	a,
		double &	b,
		double &	c
	)		const `[virtual]`

find grid coordinates for point. For debugging and validation only.

Implements MFGrid.

Definition at line 120 of file SpecialCylindricalMFGrid.cc.

References funct::cos(), gather_cfg::cout, MFGrid::frame(), sector1, funct::sin(), startingPoint(), stepSize(), and GloballyPositioned< T >::toGlobal().

Referenced by uncheckedValueInTesla().

{
  GlobalPoint gp = frame().toGlobal(p);
  double sinPhi; // sin or cos depending on wether we are at phi=0 or phi=pi/2
  if (sector1) {
    sinPhi = cos(gp.phi());
  } else {
    sinPhi = sin(gp.phi());
  }
  a = (gp.perp()-startingPoint(sinPhi))/stepSize(sinPhi);
  // FIXME: "OLD" convention of phi.
  // b = Geom::pi() - gp.phi();
  b = gp.phi();
  c = gp.z();

#ifdef DEBUG_GRID
  if (sector1) {
    cout << "toGridFrame: sinPhi " ;
  } else {
    cout << "toGridFrame: cosPhi " ;
  }
  cout << sinPhi << " LocalPoint " << p 
       << " GlobalPoint " << gp << endl 
       << " a " << a << " b " << b << " c " << c << endl;
    
#endif
}

MFGrid::LocalVector SpecialCylindricalMFGrid::uncheckedValueInTesla ( const LocalPoint & p ) const [virtual]

Interpolated field value at given point; does not check for exceptions.

Implements MFGrid3D.

Definition at line 87 of file SpecialCylindricalMFGrid.cc.

References a, b, trackerHits::c, MFGrid3D::grid_, LinearGridInterpolator3D::interpolate(), and toGridFrame().

{
//   static TimingReport::Item & timer= (*TimingReport::current())["MagneticFieldProvider::valueInTesla(SpecialCylindricalMFGrid)"];
//   TimeMe t(timer,false);

  LinearGridInterpolator3D interpol( grid_);
  double a, b, c;
  toGridFrame( p, a, b, c);
  // the following holds if B values was not converted to local coords -- see ctor
//   GlobalVector gv( interpol.interpolate( a, b, c)); // grid in global frame
//   return frame().toLocal(gv);           // must return a local vector
  return LocalVector(interpol.interpolate( a, b, c));
}