Qwt User's Guide
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

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:
numThornsNumber of thorns
numThornLevelsNumber 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:
painterPainter
centerCenter point
radiusRadius of the rose
northPosition
cgColor 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:
painterPainter
palettePalette
centerCenter of the rose
radiusRadius of the rose
northPosition pointing to north
widthWidth of the rose
numThornsNumber of thorns
numThornLevelsNumber of thorn levels
shrinkFactorFactor to shrink the thorns with each level
Returns:
Number of thorn levels
See also:
setNumThorns(), setNumThornLevels()
Returns:
Number of thorns
See also:
setNumThorns(), setNumThornLevels()
void QwtSimpleCompassRose::setNumThornLevels ( int  numThornLevels)

Set the of thorns levels

Parameters:
numThornLevelsNumber 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:
numThornsNumber 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:
factorShrink 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:
widthWidth
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()

List of all members.

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