表示一系列点的绘图项更多...

#include <qwt_polar_curve.h>

类 QwtPolarCurve 继承关系图:

类
class	PrivateData

Public 类型
enum	CurveStyle { NoCurve , Lines , UserCurve = 100 }
	曲线样式更多...

enum	LegendAttribute { LegendShowLine = 0x01 , LegendShowSymbol = 0x02 }
	在图例上表示曲线的属性更多...

Public 类型继承自 QwtPolarItem
enum	RttiValues { Rtti_PolarItem = 0 , Rtti_PolarGrid , Rtti_PolarMarker , Rtti_PolarCurve , Rtti_PolarSpectrogram , Rtti_PolarUserItem = 1000 }

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 }

enum	RenderHint { RenderAntialiased = 0x01 }

Public 成员函数
	QwtPolarCurve ()
	Constructor

	QwtPolarCurve (const QwtText &title)
	Constructor with title

	QwtPolarCurve (const QString &title)
	Constructor with title string

virtual	~QwtPolarCurve ()
	Destructor

virtual int	rtti () const override
	Get the runtime type information

void	setLegendAttribute (LegendAttribute, bool on=true)
	Set a legend attribute

bool	testLegendAttribute (LegendAttribute) const
	Test a legend attribute

void	setData (QwtSeriesData< QwtPointPolar > *data)
	Set the data

const QwtSeriesData< QwtPointPolar > *	data () const
	Get the data

size_t	dataSize () const
	Get the data size

QwtPointPolar	sample (int i) const
	Get a sample

void	setPen (const QPen &)
	Set the pen

const QPen &	pen () const
	Get the pen

void	setStyle (CurveStyle style)
	Set the curve style

CurveStyle	style () const
	Get the curve style

void	setSymbol (QwtSymbol *)
	Set the symbol

const QwtSymbol *	symbol () const
	Get the symbol

void	setCurveFitter (QwtCurveFitter *)
	Set the curve fitter

QwtCurveFitter *	curveFitter () const
	Get the curve fitter

virtual void	draw (QPainter *p, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, double radius, const QRectF &canvasRect) const override
	Draw the curve

virtual void	draw (QPainter *p, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const
	Draw the curve from index to index

virtual QwtInterval	boundingInterval (int scaleId) const override
	Get the bounding interval for a scale

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const override
	Get the legend icon

Public 成员函数继承自 QwtPolarItem
	QwtPolarItem (const QwtText &title=QwtText())
	Constructor

virtual	~QwtPolarItem ()
	Destructor

void	attach (QwtPolarPlot *plot)
	Attach the item to a plot

void	detach ()
	Detach the item from its plot

QwtPolarPlot *	plot () const
	Get the attached plot

void	setTitle (const QString &title)
	Set the title from a QString

void	setTitle (const QwtText &title)
	Set the title from a QwtText

const QwtText &	title () const
	Get the title

void	setItemAttribute (ItemAttribute, bool on=true)
	Set an item attribute

bool	testItemAttribute (ItemAttribute) const
	Test an item attribute

void	setRenderHint (RenderHint, bool on=true)
	Set a render hint

bool	testRenderHint (RenderHint) const
	Test a render hint

void	setRenderThreadCount (uint numThreads)
	Set the number of render threads

uint	renderThreadCount () const
	Get the number of render threads

double	z () const
	Get the z value

void	setZ (double z)
	Set the z value

void	show ()
	Show the item

void	hide ()
	Hide the item

virtual void	setVisible (bool)
	Set the visibility

bool	isVisible () const
	Get the visibility

virtual void	itemChanged ()
	Update the item and trigger autoRefresh

virtual void	legendChanged ()
	Update the legend

virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &, const QwtInterval &)
	Update the scale division

virtual int	marginHint () const
	Get the margin hint

void	setLegendIconSize (const QSize &)
	Set the legend icon size

QSize	legendIconSize () const
	Get the legend icon size

virtual QList< QwtLegendData >	legendData () const
	Get the legend data

Protected 成员函数
void	init ()
	Initialize the curve

virtual void	drawCurve (QPainter *, int style, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const
	Draw the curve

virtual void	drawSymbols (QPainter *, const QwtSymbol &, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const
	Draw the symbols

void	drawLines (QPainter *, const QwtScaleMap &azimuthMap, const QwtScaleMap &radialMap, const QPointF &pole, int from, int to) const
	Draw the lines

详细描述

表示一系列点的绘图项

成员枚举类型说明

◆ CurveStyle

enum QwtPolarCurve::CurveStyle

曲线样式

枚举值
NoCurve	Don't draw a curve. Note: This doesn't affect the symbols.
Lines	用直线连接点。根据 'Fitted' 属性，线条可能会被插值。可以使用 setCurveFitter() 配置曲线拟合。
UserCurve	Values > 100 are reserved for user specific curve styles

◆ LegendAttribute

enum QwtPolarCurve::LegendAttribute

在图例上表示曲线的属性

枚举值
LegendShowLine	如果 curveStyle() 不是 NoCurve，则使用 curvePen() 绘制一条线。
LegendShowSymbol	如果曲线有有效的符号，则绘制该符号。

构造及析构函数说明

◆ QwtPolarCurve() [1/3]

QwtPolarCurve::QwtPolarCurve ( )

explicit

Constructor

构造函数

◆ QwtPolarCurve() [2/3]

QwtPolarCurve::QwtPolarCurve ( const QwtText & title )

explicit

Constructor with title

带标题的构造函数

◆ QwtPolarCurve() [3/3]

QwtPolarCurve::QwtPolarCurve ( const QString & title )

explicit

Constructor with title string

带标题字符串的构造函数

◆ ~QwtPolarCurve()

QwtPolarCurve::~QwtPolarCurve ( )

virtual

Destructor

析构函数

成员函数说明

◆ boundingInterval()

QwtInterval QwtPolarCurve::boundingInterval ( int scaleId ) const

overridevirtual

Get the bounding interval for a scale

获取显示项所需的边界区间

重载 QwtPolarItem .

◆ curveFitter()

QwtCurveFitter * QwtPolarCurve::curveFitter ( ) const

Get the curve fitter

获取曲线拟合器

◆ data()

const QwtSeriesData< QwtPointPolar > * QwtPolarCurve::data ( ) const

inline

Get the data

返回: the the curve data

◆ dataSize()

size_t QwtPolarCurve::dataSize ( ) const

Get the data size

获取数据点数量

◆ draw() [1/2]

void QwtPolarCurve::draw	(	QPainter *	painter,
		const QwtScaleMap &	azimuthMap,
		const QwtScaleMap &	radialMap,
		const QPointF &	pole,
		double	radius,
		const QRectF &	canvasRect
	)		const

overridevirtual

Draw the curve

绘制曲线

实现了 QwtPolarItem.

◆ draw() [2/2]

void QwtPolarCurve::draw	(	QPainter *	painter,
		const QwtScaleMap &	azimuthMap,
		const QwtScaleMap &	radialMap,
		const QPointF &	pole,
		int	from,
		int	to
	)		const

virtual

Draw the curve from index to index

绘制曲线的一个区间

◆ drawCurve()

void QwtPolarCurve::drawCurve	(	QPainter *	painter,
		int	style,
		const QwtScaleMap &	azimuthMap,
		const QwtScaleMap &	radialMap,
		const QPointF &	pole,
		int	from,
		int	to
	)		const

protectedvirtual

Draw the curve

Draw the line part (without symbols) of a curve interval.

参数

painter	Painter
style	Curve style, see QwtPolarCurve::CurveStyle
azimuthMap	Maps azimuth values to values related to 0.0, M_2PI
radialMap	Maps radius values into painter coordinates.
pole	Position of the pole in painter coordinates
from	index of the first point to be painted
to	index of the last point to be painted.

参见: draw(), drawLines()

◆ drawLines()

void QwtPolarCurve::drawLines	(	QPainter *	painter,
		const QwtScaleMap &	azimuthMap,
		const QwtScaleMap &	radialMap,
		const QPointF &	pole,
		int	from,
		int	to
	)		const

protected

Draw the lines

Draw lines

参数

painter	Painter
azimuthMap	Maps azimuth values to values related to 0.0, M_2PI
radialMap	Maps radius values into painter coordinates.
pole	Position of the pole in painter coordinates
from	index of the first point to be painted
to	index of the last point to be painted.

参见: draw(), drawLines(), setCurveFitter()

◆ drawSymbols()

void QwtPolarCurve::drawSymbols	(	QPainter *	painter,
		const QwtSymbol &	symbol,
		const QwtScaleMap &	azimuthMap,
		const QwtScaleMap &	radialMap,
		const QPointF &	pole,
		int	from,
		int	to
	)		const

protectedvirtual

Draw the symbols

Draw symbols

参数

painter	Painter
symbol	Curve symbol
azimuthMap	Maps azimuth values to values related to 0.0, M_2PI
radialMap	Maps radius values into painter coordinates.
pole	Position of the pole in painter coordinates
from	index of the first point to be painted
to	index of the last point to be painted.

参见: setSymbol(), draw(), drawCurve()

◆ init()

void QwtPolarCurve::init ( )

protected

Initialize the curve

Initialize data members

◆ legendIcon()

QwtGraphic QwtPolarCurve::legendIcon	(	int	index,
		const QSizeF &	size
	)		const

overridevirtual

Get the legend icon

获取图例上代表曲线的图标

重载 QwtPolarItem .

◆ pen()

const QPen & QwtPolarCurve::pen ( ) const

Get the pen

获取用于绘制线条的画笔

◆ rtti()

int QwtPolarCurve::rtti ( ) const

overridevirtual

Get the runtime type information

获取运行时类型信息

重载 QwtPolarItem .

◆ sample()

QwtPointPolar QwtPolarCurve::sample ( int i ) const

inline

Get a sample

参数

i index

返回: point at position i

◆ setCurveFitter()

void QwtPolarCurve::setCurveFitter ( QwtCurveFitter * curveFitter )

Set the curve fitter

插入曲线拟合器

◆ setData()

void QwtPolarCurve::setData ( QwtSeriesData< QwtPointPolar > * data )

Set the data

使用 QwtSeriesData<QwtPointPolar> 指针初始化数据

◆ setLegendAttribute()

void QwtPolarCurve::setLegendAttribute	(	LegendAttribute	attribute,
		bool	on = `true`
	)

Set a legend attribute

指定图例标识符的绘制方式属性

◆ setPen()

void QwtPolarCurve::setPen ( const QPen & pen )

Set the pen

分配画笔

◆ setStyle()

void QwtPolarCurve::setStyle ( CurveStyle style )

Set the curve style

设置曲线的绘制样式

◆ setSymbol()

void QwtPolarCurve::setSymbol ( QwtSymbol * symbol )

Set the symbol

分配符号

◆ style()

QwtPolarCurve::CurveStyle QwtPolarCurve::style ( ) const

Get the curve style

获取当前样式

◆ symbol()

const QwtSymbol * QwtPolarCurve::symbol ( ) const

Get the symbol

获取当前符号

◆ testLegendAttribute()

bool QwtPolarCurve::testLegendAttribute ( LegendAttribute attribute ) const

Test a legend attribute

测试图例属性是否启用

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_polar_curve.h
/home/runner/work/QWT/QWT/src/plot/qwt_polar_curve.cpp

类

Public 类型

Public 成员函数

Protected 成员函数

详细描述

成员枚举类型说明

◆ CurveStyle

◆ LegendAttribute

构造及析构函数说明

◆ QwtPolarCurve() [1/3]

◆ QwtPolarCurve() [2/3]

◆ QwtPolarCurve() [3/3]

◆ ~QwtPolarCurve()

成员函数说明

◆ boundingInterval()

◆ curveFitter()

◆ data()

◆ dataSize()

◆ draw() [1/2]

◆ draw() [2/2]

◆ drawCurve()

◆ drawLines()

◆ drawSymbols()

◆ init()

◆ legendIcon()

◆ pen()

◆ rtti()

◆ sample()

◆ setCurveFitter()

◆ setData()

◆ setLegendAttribute()

◆ setPen()

◆ setStyle()

◆ setSymbol()

◆ style()

◆ symbol()

◆ testLegendAttribute()