DGtal::PreCellDirectionIterator< dim, TInteger > Class Template Reference

This class is useful for looping on all "interesting" coordinates of a pre-cell. More...

#include <DGtal/topology/KhalimskyPreSpaceND.h>

Public Types
typedef TInteger	Integer
typedef KhalimskyPreCell< dim, Integer >	Cell
typedef SignedKhalimskyPreCell< dim, Integer >	SCell

Public Member Functions
	PreCellDirectionIterator (Cell cell, bool open=true)
	Constructor from a pre-cell. More...
	PreCellDirectionIterator (SCell scell, bool open=true)
	Constructor from a signed pre-cell. More...
Dimension	operator* () const
	Return the current direction. More...
PreCellDirectionIterator &	operator++ ()
	Pre-increment. Go to next direction. More...
bool	operator!= (const Integer) const
	Fast comparison with unsigned integer (unused parameter). More...
bool	end () const
	Return 'true' if the iteration is ended. More...
bool	operator!= (const PreCellDirectionIterator &other) const
	Slow comparison with other iterator. Useful to check for end of loop. More...
bool	operator== (const PreCellDirectionIterator &other) const
	Slow comparison with other iterator. More...

Private Member Functions
void	find ()
	Look for next valid coordinate. More...

Private Attributes
Dimension	myDir
	the current direction. More...
Cell	myCell
	the cell. More...
bool	myOpen
	If 'true', returns open coordinates, otherwise returns closed coordinates. More...

Detailed Description

template<Dimension dim, typename TInteger = DGtal::int32_t>
class DGtal::PreCellDirectionIterator< dim, TInteger >

This class is useful for looping on all "interesting" coordinates of a pre-cell.

For instance, surfels in Z3 have two interesting coordinates (the ones spanned by the surfel).

KPreSpace::Cell p;
KPreSpace::DirIterator q;
for ( q = KPreSpace::uDirs( p ); q != 0; ++q )
{
KPreSpace::Dimension dir = *q;
...
}

Definition at line 280 of file KhalimskyPreSpaceND.h.

Member Typedef Documentation

Cell

template<Dimension dim, typename TInteger = DGtal::int32_t>

typedef KhalimskyPreCell< dim, Integer > DGtal::PreCellDirectionIterator< dim, TInteger >::Cell

Definition at line 285 of file KhalimskyPreSpaceND.h.

Integer

template<Dimension dim, typename TInteger = DGtal::int32_t>

typedef TInteger DGtal::PreCellDirectionIterator< dim, TInteger >::Integer

Definition at line 283 of file KhalimskyPreSpaceND.h.

SCell

template<Dimension dim, typename TInteger = DGtal::int32_t>

typedef SignedKhalimskyPreCell< dim, Integer > DGtal::PreCellDirectionIterator< dim, TInteger >::SCell

Definition at line 286 of file KhalimskyPreSpaceND.h.

Constructor & Destructor Documentation

PreCellDirectionIterator() [1/2]

template<Dimension dim, typename TInteger = DGtal::int32_t>

DGtal::PreCellDirectionIterator< dim, TInteger >::PreCellDirectionIterator ( Cell  cell, bool  open = true  )

explicit

Constructor from a pre-cell.

Parameters

cell	any unsigned pre-cell
open	'true' if the cell if open.

PreCellDirectionIterator() [2/2]

template<Dimension dim, typename TInteger = DGtal::int32_t>

DGtal::PreCellDirectionIterator< dim, TInteger >::PreCellDirectionIterator ( SCell  scell, bool  open = true  )

explicit

Constructor from a signed pre-cell.

Parameters

scell	any signed pre-cell
open	'true' if the cell if open.

Member Function Documentation

end()

template<Dimension dim, typename TInteger = DGtal::int32_t>

bool DGtal::PreCellDirectionIterator< dim, TInteger >::end

(

)

const

Return 'true' if the iteration is ended.

Returns

'true' if the iteration is ended.

find()

template<Dimension dim, typename TInteger = DGtal::int32_t>

void DGtal::PreCellDirectionIterator< dim, TInteger >::find ( )

private

Look for next valid coordinate.

operator!=() [1/2]

template<Dimension dim, typename TInteger = DGtal::int32_t>

bool DGtal::PreCellDirectionIterator< dim, TInteger >::operator!=

(

const

Integer

)

const

Fast comparison with unsigned integer (unused parameter).

Comparison is 'false' at the end of the iteration.

Returns

'true' if the iterator is finished.

operator!=() [2/2]

template<Dimension dim, typename TInteger = DGtal::int32_t>

bool DGtal::PreCellDirectionIterator< dim, TInteger >::operator!=

(

const PreCellDirectionIterator< dim, TInteger > &

other

)

const

Slow comparison with other iterator. Useful to check for end of loop.

Parameters

other

any direction iterator.

operator*()

template<Dimension dim, typename TInteger = DGtal::int32_t>

Dimension DGtal::PreCellDirectionIterator< dim, TInteger >::operator*

(

)

const

Return the current direction.

Returns

the current direction.

operator++()

template<Dimension dim, typename TInteger = DGtal::int32_t>

PreCellDirectionIterator& DGtal::PreCellDirectionIterator< dim, TInteger >::operator++

(

)

Pre-increment. Go to next direction.

operator==()

template<Dimension dim, typename TInteger = DGtal::int32_t>

bool DGtal::PreCellDirectionIterator< dim, TInteger >::operator==

(

const PreCellDirectionIterator< dim, TInteger > &

other

)

const

Slow comparison with other iterator.

Parameters

other

any direction iterator.

Field Documentation

myCell

template<Dimension dim, typename TInteger = DGtal::int32_t>

Cell DGtal::PreCellDirectionIterator< dim, TInteger >::myCell

private

the cell.

Definition at line 343 of file KhalimskyPreSpaceND.h.

myDir

template<Dimension dim, typename TInteger = DGtal::int32_t>

Dimension DGtal::PreCellDirectionIterator< dim, TInteger >::myDir

private

the current direction.

Definition at line 341 of file KhalimskyPreSpaceND.h.

myOpen

template<Dimension dim, typename TInteger = DGtal::int32_t>

bool DGtal::PreCellDirectionIterator< dim, TInteger >::myOpen

private

If 'true', returns open coordinates, otherwise returns closed coordinates.

Definition at line 347 of file KhalimskyPreSpaceND.h.

---

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

• KhalimskyPreSpaceND.h