evd::details::GridAxisClass Class Reference

Manages a cell-like division of a coordinate. More...

Public Member Functions
	GridAxisClass ()
	Default constructor: an invalid range. More...
	GridAxisClass (size_t nDiv, float new_min, float new_max)
	Constructor: sets the limits and the number of cells. More...
bool	hasCell (std::ptrdiff_t iCell) const
	Returns whether the cell is present or not. More...
bool	hasCoord (float coord) const
	Returns whether the coordinate is included in the range or not. More...
float	Length () const
	Returns the length of the axis. More...
size_t	NCells () const
	Returns the length of the axis. More...
bool	isEmpty () const
	Returns whether minimum and maximum match. More...
float	CellSize () const
	Returns the cell size. More...
float	LowerEdge (std::ptrdiff_t iCell) const
	Returns the lower edge of the cell. More...
float	UpperEdge (std::ptrdiff_t iCell) const
	Returns the upper edge of the cell. More...
bool	Init (size_t nDiv, float new_min, float new_max)
	Initialize the axis, returns whether cell size is finite. More...
bool	SetLimits (float new_min, float new_max)
	Initialize the axis limits, returns whether cell size is finite. More...
bool	SetMinCellSize (float min_size)
bool	SetMaxCellSize (float max_size)
bool	SetCellSizeBoundary (float min_size, float max_size)
template<typename Stream >
void	Dump (Stream &&out) const
std::ptrdiff_t	GetCell (float coord) const
	Returns the index of the specified cell. More...
std::ptrdiff_t	operator() (float coord) const
float	Min () const
	Returns the extremes of the axis. More...
float	Max () const

Private Attributes
size_t	n_cells
	number of cells in the axis More...
float	min
float	max
	extremes of the axis More...
float	cell_size
	size of each cell More...

Detailed Description

Manages a cell-like division of a coordinate.

Definition at line 370 of file RawDataDrawer.cxx.

Constructor & Destructor Documentation

evd::details::GridAxisClass::GridAxisClass ( )

inline

Default constructor: an invalid range.

Definition at line 373 of file RawDataDrawer.cxx.

{ Init(0, 0., 0.); }

evd::details::GridAxisClass::GridAxisClass ( size_t  nDiv, float  new_min, float  new_max  )

inline

Constructor: sets the limits and the number of cells.

Definition at line 376 of file RawDataDrawer.cxx.

{ Init(nDiv, new_min, new_max); }

Member Function Documentation

float evd::details::GridAxisClass::CellSize ( ) const

inline

Returns the cell size.

Definition at line 439 of file RawDataDrawer.cxx.

      {
        return cell_size;
      }

template<typename Stream >

void evd::details::GridAxisClass::Dump

(

Stream &&

out

)

const

Definition at line 2078 of file RawDataDrawer.cxx.

    {
      out << NCells() << " cells from " << Min() << " to " << Max() << " (length: " << Length()
          << ")";
    } // GridAxisClass::Dump()

std::ptrdiff_t evd::details::GridAxisClass::GetCell

(

float

coord

)

const

Returns the index of the specified cell.

Definition at line 2019 of file RawDataDrawer.cxx.

    {
      return std::ptrdiff_t((coord - min) / cell_size); // truncate
    }                                                   // GridAxisClass::GetCell()

bool evd::details::GridAxisClass::hasCell ( std::ptrdiff_t  iCell ) const

inline

Returns whether the cell is present or not.

Definition at line 390 of file RawDataDrawer.cxx.

      {
        return (iCell >= 0) && ((size_t)iCell < NCells());
      }

bool evd::details::GridAxisClass::hasCoord ( float  coord ) const

inline

Returns whether the coordinate is included in the range or not.

Definition at line 397 of file RawDataDrawer.cxx.

      {
        return (coord >= Min()) && (coord < Max());
      }

bool evd::details::GridAxisClass::Init	(	size_t	nDiv,
		float	new_min,
		float	new_max
	)

Initialize the axis, returns whether cell size is finite.

Definition at line 2026 of file RawDataDrawer.cxx.

    {

      n_cells = std::max(nDiv, size_t(1));
      return SetLimits(new_min, new_max);

    } // GridAxisClass::Init()

bool evd::details::GridAxisClass::isEmpty ( ) const

inline

Returns whether minimum and maximum match.

Definition at line 432 of file RawDataDrawer.cxx.

      {
        return max == min;
      }

float evd::details::GridAxisClass::Length ( ) const

inline

Returns the length of the axis.

Definition at line 418 of file RawDataDrawer.cxx.

      {
        return max - min;
      }

float evd::details::GridAxisClass::LowerEdge ( std::ptrdiff_t  iCell ) const

inline

Returns the lower edge of the cell.

Definition at line 446 of file RawDataDrawer.cxx.

      {
        return Min() + CellSize() * iCell;
      }

float evd::details::GridAxisClass::Max ( ) const

inline

Definition at line 410 of file RawDataDrawer.cxx.

      {
        return max;
      }

float evd::details::GridAxisClass::Min ( ) const

inline

Returns the extremes of the axis.

Definition at line 405 of file RawDataDrawer.cxx.

      {
        return min;
      }

size_t evd::details::GridAxisClass::NCells ( ) const

inline

Returns the length of the axis.

Definition at line 425 of file RawDataDrawer.cxx.

      {
        return n_cells;
      }

std::ptrdiff_t evd::details::GridAxisClass::operator() ( float  coord ) const

inline

Definition at line 382 of file RawDataDrawer.cxx.

      {
        return GetCell(coord);
      }

bool evd::details::GridAxisClass::SetCellSizeBoundary ( float  min_size, float  max_size  )

inline

Expands the cell (at fixed range) to meet maximum cell size

Returns

Whether the cell size was changed

Definition at line 475 of file RawDataDrawer.cxx.

      {
        return SetMinCellSize(min_size) || SetMaxCellSize(max_size);
      }

bool evd::details::GridAxisClass::SetLimits	(	float	new_min,
		float	new_max
	)

Initialize the axis limits, returns whether cell size is finite.

Definition at line 2036 of file RawDataDrawer.cxx.

    {
      min = new_min;
      max = new_max;
      cell_size = Length() / float(n_cells);

      return std::isnormal(cell_size);
    } // GridAxisClass::SetLimits()

bool evd::details::GridAxisClass::SetMaxCellSize

(

float

max_size

)

Expands the cell (at fixed range) to meet maximum cell size

Returns

Whether the cell size was changed

Definition at line 2062 of file RawDataDrawer.cxx.

    {
      if (cell_size <= max_size) return false;

      // n_cells gets rounded up
      n_cells = (size_t)std::max(std::ceil(Length() / max_size), 1.0F);

      // reevaluate cell size, that might be different than max_size
      // because of n_cells rounding or minimum value
      cell_size = Length() / float(n_cells);
      return true;
    } // GridAxisClass::SetMaxCellSize()

bool evd::details::GridAxisClass::SetMinCellSize

(

float

min_size

)

Expands the cell (at fixed range) to meet minimum cell size

Returns

Whether the cell size was changed

Definition at line 2047 of file RawDataDrawer.cxx.

    {
      if (cell_size >= min_size) return false;

      // n_cells gets truncated
      n_cells = (size_t)std::max(std::floor(Length() / min_size), 1.0F);

      // reevaluate cell size, that might be different than min_size
      // because of n_cells truncation or minimum value
      cell_size = Length() / float(n_cells);
      return true;
    } // GridAxisClass::SetMinCellSize()

float evd::details::GridAxisClass::UpperEdge ( std::ptrdiff_t  iCell ) const

inline

Returns the upper edge of the cell.

Definition at line 453 of file RawDataDrawer.cxx.

      {
        return LowerEdge(iCell + 1);
      }

Member Data Documentation

float evd::details::GridAxisClass::cell_size

private

size of each cell

Definition at line 487 of file RawDataDrawer.cxx.

float evd::details::GridAxisClass::max

private

extremes of the axis

Definition at line 485 of file RawDataDrawer.cxx.

float evd::details::GridAxisClass::min

private

Definition at line 485 of file RawDataDrawer.cxx.

size_t evd::details::GridAxisClass::n_cells

private

number of cells in the axis

Definition at line 484 of file RawDataDrawer.cxx.

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The documentation for this class was generated from the following file:

• RawDataDrawer.cxx