A simple rose for QwtCompass.
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#include <qwt_compass_rose.h>
A simple rose for QwtCompass.
◆ QwtSimpleCompassRose()
QwtSimpleCompassRose::QwtSimpleCompassRose |
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int |
numThorns = 8 , |
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int |
numThornLevels = -1 |
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) |
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Constructor
- Parameters
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numThorns | Number of thorns |
numThornLevels | Number of thorn levels |
◆ draw()
void QwtSimpleCompassRose::draw |
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QPainter * |
painter, |
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const QPointF & |
center, |
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double |
radius, |
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double |
north, |
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QPalette::ColorGroup |
cg = QPalette::Active |
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) |
| const |
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virtual |
Draw the rose
- Parameters
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painter | Painter |
center | Center point |
radius | Radius of the rose |
north | Position |
cg | Color group |
Implements QwtCompassRose.
◆ drawRose()
void QwtSimpleCompassRose::drawRose |
( |
QPainter * |
painter, |
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const QPalette & |
palette, |
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const QPointF & |
center, |
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double |
radius, |
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double |
north, |
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double |
width, |
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int |
numThorns, |
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int |
numThornLevels, |
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double |
shrinkFactor |
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) |
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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 |
◆ numThornLevels()
int QwtSimpleCompassRose::numThornLevels |
( |
| ) |
const |
◆ numThorns()
int QwtSimpleCompassRose::numThorns |
( |
| ) |
const |
◆ setNumThornLevels()
void QwtSimpleCompassRose::setNumThornLevels |
( |
int |
numThornLevels | ) |
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◆ setNumThorns()
void QwtSimpleCompassRose::setNumThorns |
( |
int |
numThorns | ) |
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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()
◆ setShrinkFactor()
void QwtSimpleCompassRose::setShrinkFactor |
( |
double |
factor | ) |
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Set the Factor how to shrink the thorns with each level The default value is 0.9.
- Parameters
-
- See also
- shrinkFactor()
◆ setWidth()
void QwtSimpleCompassRose::setWidth |
( |
double |
width | ) |
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Set the width of the rose heads. Lower value make thinner heads. The range is limited from 0.03 to 0.4.
- Parameters
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◆ shrinkFactor()
double QwtSimpleCompassRose::shrinkFactor |
( |
| ) |
const |
◆ width()
double QwtSimpleCompassRose::width |
( |
| ) |
const |