#include <Grid1D.h>

Public Types
typedef float	Scalar
Public Member Functions
int	cells () const
Scalar	closestNode (Scalar a) const
	Grid1D (Scalar lower, Scalar upper, int nodes)
	Grid1D ()
int	index (Scalar a, Scalar &f) const
int	index (Scalar a) const
	returns valid index, or -1 if the value is outside range +/- one cell.
bool	inRange (int i) const
Scalar	lower () const
Scalar	node (int i) const
int	nodes () const
void	normalize (int &ind, Scalar &f) const
Scalar	step () const
Scalar	upper () const
Private Attributes
int	edges_
Scalar	lower_
Scalar	stepinv_
Scalar	upper_

Detailed Description

Definition at line 7 of file Grid1D.h.

Member Typedef Documentation

typedef float Grid1D::Scalar

Definition at line 10 of file Grid1D.h.

Constructor & Destructor Documentation

Grid1D::Grid1D ( ) [inline]

Definition at line 13 of file Grid1D.h.

{}

Grid1D::Grid1D	(	Scalar	lower,
		Scalar	upper,
		int	nodes
	)		`[inline]`

Definition at line 15 of file Grid1D.h.

                                                 : 
    lower_(lower), upper_(upper), edges_(nodes-2) {
    stepinv_ =  (nodes-1)/(upper - lower);
  }

Member Function Documentation

int Grid1D::cells ( ) const [inline]

Definition at line 25 of file Grid1D.h.

{return  edges_+1;}

Scalar Grid1D::closestNode ( Scalar a ) const [inline]

Definition at line 53 of file Grid1D.h.

References b, trackerHits::c, f, max(), min, relval_parameters_module::step, and tmp.

                                      {
    Scalar b = (a-lower())/step();
    Scalar c = floor(b);
    Scalar tmp = (b-c < 0.5) ? std::max(c,0.f) : std::min(c+1.f,static_cast<Scalar>(nodes()-1));
    return tmp*step()+lower();
  }

int Grid1D::index ( Scalar a ) const [inline]

returns valid index, or -1 if the value is outside range +/- one cell.

Definition at line 61 of file Grid1D.h.

References max(), min, and relval_parameters_module::step.

                             {
    int ind = static_cast<int>((a-lower())/step());
    // FIXME: this causes an exception to be thrown later. Should be tested
    // more carefully before release
    //  if (ind < -1 || ind > cells()) {
    //     std::cout << "**** ind = " << ind << " cells: " << cells() << std::endl;
    //    return -1;
    //  }
    return std::max(0, std::min( cells()-1, ind));
  }

int Grid1D::index	(	Scalar	a,
		Scalar &	f
	)		const `[inline]`

Definition at line 34 of file Grid1D.h.

References b.

Referenced by LinearGridInterpolator3D::interpolate().

                                        {
    Scalar b;
    f = modff((a-lower())*stepinv_, &b);
    return b;
  }

bool Grid1D::inRange ( int i ) const [inline]

Definition at line 29 of file Grid1D.h.

                            {
    return i>=0 && i<=edges_;
  }

Scalar Grid1D::lower ( ) const [inline]

Definition at line 22 of file Grid1D.h.

Referenced by LinearGridInterpolator3D::throwGridInterpolator3DException(), and TrapezoidalCartesianMFGrid::TrapezoidalCartesianMFGrid().

{return lower_;}

Scalar Grid1D::node ( int i ) const [inline]

Definition at line 27 of file Grid1D.h.

References relval_parameters_module::step.

Referenced by Grid3D::dump(), and LinearGridInterpolator3D::interpolate().

{ return i*step() + lower();}

int Grid1D::nodes ( ) const [inline]

Definition at line 24 of file Grid1D.h.

Referenced by Grid3D::dump(), and LinearGridInterpolator3D::interpolate().

{return  edges_+2;}

void Grid1D::normalize	(	int &	ind,
		Scalar &	f
	)		const `[inline]`

Definition at line 41 of file Grid1D.h.

Referenced by LinearGridInterpolator3D::interpolate().

                                               {
    if (ind<0) {
      f -= ind;
      ind = 0;
    }
    else if (ind>edges_) {
      f += ind-edges_;
      ind = edges_;
    }
  }