qtcore::GridNumbering Class Reference

Represents standard numbering of grid cells. More...

#include <qttools/core/grid_numbering.h>

Public Types
enum	SweepMode { OneWay, ZigZag }

Public Member Functions
	GridNumbering ()
	GridNumbering (Qt::Corner corner, Qt::Orientation orientation, SweepMode sweep)
Qt::Corner	startCorner () const
void	setStartCorner (Qt::Corner corner)
Qt::Orientation	orientation () const
void	setOrientation (Qt::Orientation orientation)
SweepMode	sweepMode () const
void	setSweepMode (SweepMode sweepMode)

Static Public Member Functions
static QVector< QVector< int > >	gridIndexes (const GridNumbering &gridNb, int rowCount, int colCount, int startIndex=0)
	Computes all the indexes of a grid's cells. More...

Detailed Description

Represents standard numbering of grid cells.

GridNumbering stores key information about numbering of grid cells :

• start corner (grid corner where the numbering starts, i.e. the firt cell)
• orientation (horizontal or vertical numbering)
• sweep mode (one-way or zig-zag numbering)

Member Enumeration Documentation

enum qtcore::GridNumbering::SweepMode

Enumerator
OneWay
ZigZag

Constructor & Destructor Documentation

qtcore::GridNumbering::GridNumbering

(

)

qtcore::GridNumbering::GridNumbering	(	Qt::Corner	corner,
		Qt::Orientation	orientation,
		SweepMode	sweep
	)

Member Function Documentation

QVector< QVector< int > > qtcore::GridNumbering::gridIndexes ( const GridNumbering &  gridNb, int  rowCount, int  colCount, int  startIndex = 0  )

static

Computes all the indexes of a grid's cells.

The result is an array of grid rows (each row being of the same size).
For example:

• GridNumbering(Qt::TopRightCorner, Qt::Vertical, GridNumbering::OneWay)
• rowCount = colCount = 4
• startIndex = 0

will output:

row[0] == { 12   8  4  0 }
row[1] == { 13   9  5  1 }
row[2] == { 14  10  6  2 }
row[3] == { 15  11  7  3 }

Note

Let N = rowCount and M = colCount , complexity is O(NxM)

Parameters

gridNb	How grid cells have to be numbered
rowCount	Count of rows in the grid
colCount	Count of columns in the grid
startIndex	The first index to start from (usually 0 or 1)

Qt::Orientation qtcore::GridNumbering::orientation

(

)

const

void qtcore::GridNumbering::setOrientation

(

Qt::Orientation

orientation

)

void qtcore::GridNumbering::setStartCorner

(

Qt::Corner

corner

)

void qtcore::GridNumbering::setSweepMode

(

SweepMode

sweepMode

)

Qt::Corner qtcore::GridNumbering::startCorner

(

)

const

GridNumbering::SweepMode qtcore::GridNumbering::sweepMode

(

)

const

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

• grid_numbering.h
• grid_numbering.cpp