QwtSimpleCompassRose Class Reference

A simple rose for QwtCompass. More...

#include <qwt_compass_rose.h>

Inheritance diagram for QwtSimpleCompassRose:

Public Member Functions
	QwtSimpleCompassRose (int numThorns=8, int numThornLevels=-1)
virtual	~QwtSimpleCompassRose ()
	Destructor.
void	setWidth (double w)
double	width () const
void	setNumThorns (int count)
int	numThorns () const
void	setNumThornLevels (int count)
int	numThornLevels () const
void	setShrinkFactor (double factor)
double	shrinkFactor () const
virtual void	draw (QPainter *, const QPointF &center, double radius, double north, QPalette::ColorGroup=QPalette::Active) const
Public Member Functions inherited from QwtCompassRose
virtual	~QwtCompassRose ()
	Destructor.
virtual void	setPalette (const QPalette &p)
	Assign a palette.
const QPalette &	palette () const

Static Public Member Functions
static void	drawRose (QPainter *, const QPalette &, const QPointF &center, double radius, double origin, double width, int numThorns, int numThornLevels, double shrinkFactor)

Detailed Description

A simple rose for QwtCompass.

Constructor & Destructor Documentation

QwtSimpleCompassRose::QwtSimpleCompassRose	(	int	numThorns = 8,
		int	numThornLevels = -1
	)

Constructor

Parameters

numThorns	Number of thorns
numThornLevels	Number of thorn levels

Member Function Documentation

void QwtSimpleCompassRose::draw ( QPainter *  painter, const QPointF &  center, double  radius, double  north, QPalette::ColorGroup  cg = QPalette::Active  ) const

virtual

Draw the rose

Parameters

painter	Painter
center	Center point
radius	Radius of the rose
north	Position
cg	Color group

Implements QwtCompassRose.

void QwtSimpleCompassRose::drawRose ( QPainter *  painter, const QPalette &  palette, const QPointF &  center, double  radius, double  north, double  width, int  numThorns, int  numThornLevels, double  shrinkFactor  )

static

Draw the rose

Parameters

painter	Painter
palette	Palette
center	Center of the rose
radius	Radius of the rose
north	Position pointing to north
width	Width of the rose
numThorns	Number of thorns
numThornLevels	Number of thorn levels
shrinkFactor	Factor to shrink the thorns with each level

int QwtSimpleCompassRose::numThornLevels

(

)

const

Returns

Number of thorn levels

See Also

setNumThorns(), setNumThornLevels()

int QwtSimpleCompassRose::numThorns

(

)

const

Returns

Number of thorns

See Also

setNumThorns(), setNumThornLevels()

void QwtSimpleCompassRose::setNumThornLevels

(

int

numThornLevels

)

Set the of thorns levels

Parameters

numThornLevels

Number of thorns levels

See Also

setNumThorns(), numThornLevels()

void QwtSimpleCompassRose::setNumThorns

(

int

numThorns

)

Set the number of thorns on one level The number is aligned to a multiple of 4, with a minimum of 4

Parameters

numThorns

Number of thorns

See Also

numThorns(), setNumThornLevels()

void QwtSimpleCompassRose::setShrinkFactor

(

double

factor

)

Set the Factor how to shrink the thorns with each level The default value is 0.9.

Parameters

factor

Shrink factor

See Also

shrinkFactor()

void QwtSimpleCompassRose::setWidth

(

double

width

)

Set the width of the rose heads. Lower value make thinner heads. The range is limited from 0.03 to 0.4.

Parameters

width

Width

double QwtSimpleCompassRose::shrinkFactor

(

)

const

Returns

Factor how to shrink the thorns with each level

See Also

setShrinkFactor()

double QwtSimpleCompassRose::width

(

)

const

Returns

Width of the rose

See Also

setWidth()