RectangularCylindricalMFGrid Class Reference

#include <RectangularCylindricalMFGrid.h>

Inheritance diagram for RectangularCylindricalMFGrid:

Public Member Functions
void	dump () const override
LocalPoint	fromGridFrame (double a, double b, double c) const override
	find grid coordinates for point. For debugging and validation only. More...
	RectangularCylindricalMFGrid (binary_ifstream &istr, const GloballyPositioned< float > &vol)
void	toGridFrame (const LocalPoint &p, double &a, double &b, double &c) const override
	find grid coordinates for point. For debugging and validation only. More...
LocalVector	uncheckedValueInTesla (const LocalPoint &p) const override
	Interpolated field value at given point; does not check for exceptions. More...
Public Member Functions inherited from MFGrid3D
Dimensions	dimensions (void) const override
Indexes	index (const LocalPoint &p) const override
	MFGrid3D (const GloballyPositioned< float > &vol)
LocalPoint	nodePosition (int i, int j, int k) const override
	Position of node in local frame. More...
LocalVector	nodeValue (int i, int j, int k) const override
	Field value at node. More...
LocalVector	valueInTesla (const LocalPoint &p) const override
	Interpolated field value at given point. More...
Public Member Functions inherited from MFGrid
const GloballyPositioned< float > &	frame () const
	Local reference frame. More...
	MFGrid (const GloballyPositioned< float > &vol)
	~MFGrid () override
Public Member Functions inherited from MagneticFieldProvider< float >
virtual LocalVectorType	derivativeInTeslaPerMeter (const LocalPointType &p, int N) const
virtual int	hasDerivatives () const
virtual LocalVectorType	valueInTesla (const LocalPointType &p) const =0
virtual	~MagneticFieldProvider ()

Additional Inherited Members
Public Types inherited from MFGrid
typedef GloballyPositioned< float >::GlobalPoint	GlobalPoint
typedef GloballyPositioned< float >::GlobalVector	GlobalVector
typedef GloballyPositioned< float >::LocalPoint	LocalPoint
typedef GloballyPositioned< float >::LocalVector	LocalVector
Public Types inherited from MagneticFieldProvider< float >
typedef Point3DBase< float, GlobalTag >	GlobalPointType
typedef Vector3DBase< float, GlobalTag >	GlobalVectorType
typedef Point3DBase< float, LocalTag >	LocalPointType
typedef Vector3DBase< float, LocalTag >	LocalVectorType
Protected Types inherited from MFGrid3D
using	BVector = Grid3D::BVector
using	GridType = Grid3D
Protected Member Functions inherited from MFGrid3D
void	setGrid (const GridType &grid)
Protected Attributes inherited from MFGrid3D
GridType	grid_

Detailed Description

Definition at line 9 of file RectangularCylindricalMFGrid.h.

Constructor & Destructor Documentation

RectangularCylindricalMFGrid::RectangularCylindricalMFGrid	(	binary_ifstream &	istr,
		const GloballyPositioned< float > &	vol
	)

Definition at line 8 of file RectangularCylindricalMFGrid.cc.

References gather_cfg::cout, MFGrid::frame(), MFGrid3D::grid_, and GloballyPositioned< T >::toLocal().

  : MFGrid3D(vol)
{
  // The parameters read from the data files are given in global coordinates.
  // In version 85l, local frame has the same orientation of global frame for the reference
  // volume, i.e. the r.f. transformation is only a translation.
  // There is therefore no need to convert the field values to local coordinates.
  // Check this assumption: 
  GlobalVector localXDir(frame().toGlobal(LocalVector(1,0,0)));
  GlobalVector localYDir(frame().toGlobal(LocalVector(0,1,0)));

  if (localXDir.dot(GlobalVector(1,0,0)) > 0.999999 &&
      localYDir.dot(GlobalVector(0,1,0)) > 0.999999) {
    // "null" rotation - requires no conversion...
  } else {
    cout << "ERROR: RectangularCylindricalMFGrid: unexpected orientation: x: " 
     << localXDir << " y: " << localYDir << endl;
  }

  int n1, n2, n3;
  inFile >> n1 >> n2 >> n3;
  double xref, yref, zref;
  inFile >> xref >> yref >> zref;
  double stepx, stepy, stepz;
  inFile >> stepx    >> stepy    >> stepz;

  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;
    fieldValues.push_back(BVector(Bx,By,Bz));
  }
  // 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));
  LocalPoint lrefp = frame().toLocal( grefp);

#ifdef DEBUG_GRID
  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;
#endif

  Grid1D gridX( lrefp.perp(), lrefp.perp() + stepx*(n1-1), n1);
  //Grid1D gridY( lrefp.phi(), lrefp.phi() + stepy*(n2-1), n2); // wrong: gives zero
  Grid1D gridY( yref, yref + stepy*(n2-1), n2);
  Grid1D gridZ( lrefp.z(), lrefp.z() + stepz*(n3-1), n3);

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

Member Function Documentation

void RectangularCylindricalMFGrid::dump ( void  ) const

overridevirtual

Reimplemented from MFGrid.

Definition at line 69 of file RectangularCylindricalMFGrid.cc.

References gather_cfg::cout, Grid3D::data(), MFGrid3D::grid_, Grid3D::grida(), Grid3D::gridb(), Grid3D::gridc(), Grid1D::lower(), Grid1D::nodes(), and Grid1D::step().

{
  cout << endl << "Dump of RectangularCylindricalMFGrid" << endl;
  cout << "Number of points from Grid1D " 
       << grid_.grida().nodes() << " " << grid_.gridb().nodes() << " " << grid_.gridc().nodes() << endl;

  cout << "Reference Point from Grid1D " 
       << grid_.grida().lower() << " " << grid_.gridb().lower() << " " << grid_.gridc().lower() << endl;

  cout << "Basic Distance from Grid1D "
       << grid_.grida().step() << " " << grid_.gridb().step() << " " << grid_.gridc().step() << endl;


  cout << "Dumping " << grid_.data().size() << " field values " << endl;
  // grid_.dump();
}

MFGrid::LocalPoint RectangularCylindricalMFGrid::fromGridFrame ( double  a, double  b, double  c  ) const

overridevirtual

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

Implements MFGrid.

Definition at line 116 of file RectangularCylindricalMFGrid.cc.

{

  // FIXME: "OLD" convention of phi.
  //  return LocalPoint( LocalPoint::Cylindrical(a, Geom::pi() - b, c));
  return LocalPoint( LocalPoint::Cylindrical(a, b, c));
}

void RectangularCylindricalMFGrid::toGridFrame ( const LocalPoint &  p, double &  a, double &  b, double &  c  ) const

overridevirtual

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

Implements MFGrid.

Definition at line 106 of file RectangularCylindricalMFGrid.cc.

{
  a = p.perp();
  // FIXME: "OLD" convention of phi.
  //  b = Geom::pi() - p.phi();
  b = p.phi();
  c = p.z();
}

MFGrid::LocalVector RectangularCylindricalMFGrid::uncheckedValueInTesla ( const LocalPoint &  p ) const

overridevirtual

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

Implements MFGrid3D.

Definition at line 86 of file RectangularCylindricalMFGrid.cc.

References MillePedeFileConverter_cfg::e, MFGrid3D::grid_, Grid3D::grida(), Grid3D::gridc(), Grid1D::index(), LinearGridInterpolator3D::interpolate(), gen::k, Grid1D::lower(), Grid1D::node(), dttmaxenums::R, mps_fire::result, and Grid1D::step().

{
  const float minimalSignificantR = 1e-6; // [cm], points below this radius are treated as zero radius
  float R = p.perp();
  if (R < minimalSignificantR) {
    if (grid_.grida().lower() < minimalSignificantR) {
      int k = grid_.gridc().index(p.z());
      double u = (p.z() - grid_.gridc().node(k)) / grid_.gridc().step();
      LocalVector result((1-u)*grid_(0,  0,  k) + u*grid_(0,  0,  k+1)); 
      return result;
    }
  }
  
  LinearGridInterpolator3D interpol( grid_);
  // FIXME: "OLD" convention of phi.
  // GridType::ValueType value = interpol( R, Geom::pi() - p.phi(), p.z());
  GridType::ReturnType value = interpol.interpolate( R, p.phi(), p.z());
  return LocalVector(value);
}