表示矢量场的绘图项更多...

#include <qwt_plot_vectorfield.h>

类 QwtPlotVectorField 继承关系图:

类
class	PrivateData

Public 类型
enum	IndicatorOrigin { OriginHead , OriginTail , OriginCenter }
	指示器原点更多...

enum	PaintAttribute { FilterVectors = 0x01 }
	绘制属性更多...

enum	MagnitudeMode { MagnitudeAsColor = 0x01 , MagnitudeAsLength = 0x02 }
	大小模式更多...

Public 类型继承自 QwtPlotItem
enum	RttiValues { Rtti_PlotItem = 0 , Rtti_PlotGrid , Rtti_PlotScale , Rtti_PlotLegend , Rtti_PlotMarker , Rtti_PlotCurve , Rtti_PlotSpectroCurve , Rtti_PlotIntervalCurve , Rtti_PlotHistogram , Rtti_PlotSpectrogram , Rtti_PlotGraphic , Rtti_PlotTradingCurve , Rtti_PlotBarChart , Rtti_PlotMultiBarChart , Rtti_PlotShape , Rtti_PlotTextLabel , Rtti_PlotZone , Rtti_PlotVectorField , Rtti_PlotArrowMarker , Rtti_PlotBoxChart , Rtti_PlotUserItem = 1000 }
	运行时类型信息更多...

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 , Margins = 0x04 }
	绘图项属性更多...

enum	ItemInterest { ScaleInterest = 0x01 , LegendInterest = 0x02 }
	绘图项关注的事件类型更多...

enum	RenderHint { RenderAntialiased = 0x1 }
	渲染提示更多...

Public 成员函数
	QwtPlotVectorField (const QString &title=QString())
	构造函数

	QwtPlotVectorField (const QwtText &title)
	构造函数

virtual	~QwtPlotVectorField ()
	析构函数

void	setPaintAttribute (PaintAttribute, bool on=true)
	指定绘制曲线的属性

bool	testPaintAttribute (PaintAttribute) const
	测试绘制属性

void	setMagnitudeMode (MagnitudeMode, bool on=true)
	指定表示箭头/符号大小的方式

bool	testMagnitudeMode (MagnitudeMode) const
	测试大小模式

void	setSymbol (QwtVectorFieldSymbol *)
	设置新的箭头符号

const QwtVectorFieldSymbol *	symbol () const
	获取箭头符号

void	setPen (const QPen &)
	设置画笔

QPen	pen () const
	获取用于绘制线条的画笔

void	setBrush (const QBrush &)
	设置画刷

QBrush	brush () const
	获取用于填充符号的画刷

void	setRasterSize (const QSizeF &)
	设置用于过滤样本的栅格大小

QSizeF	rasterSize () const
	获取用于过滤样本的栅格大小

void	setIndicatorOrigin (IndicatorOrigin)
	设置符号/箭头的原点

IndicatorOrigin	indicatorOrigin () const
	获取符号/箭头的原点

void	setSamples (const QVector< QwtVectorFieldSample > &)
	用样本数组初始化数据

void	setSamples (QwtVectorFieldData *)
	分配一系列样本

void	setColorMap (QwtColorMap *)
	更改颜色映射

const QwtColorMap *	colorMap () const
	获取用于将强度值映射到颜色的颜色映射

void	setMagnitudeRange (const QwtInterval &)
	设置用于颜色映射查找的大小范围

QwtInterval	magnitudeRange () const
	获取用于颜色映射查找的大小范围

void	setMinArrowLength (double)
	设置非零向量箭头长度的最小值

double	minArrowLength () const
	获取非零向量箭头长度的最小值

void	setMaxArrowLength (double)
	设置箭头长度的最大值

double	maxArrowLength () const
	获取箭头长度的最大值

virtual double	arrowLength (double magnitude) const
	根据给定大小计算箭头长度

virtual QRectF	boundingRect () const override
	获取边界矩形

virtual void	drawSeries (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const override
	绘制点的一部分

virtual int	rtti () const override
	获取运行时类型信息

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const override
	获取图例上表示矢量场的图标

void	setMagnitudeScaleFactor (double factor)
	设置大小缩放因子

double	magnitudeScaleFactor () const
	获取用于从大小计算箭头长度的缩放因子

Public 成员函数继承自 QwtPlotSeriesItem
	QwtPlotSeriesItem (const QString &title=QString())
	构造函数

	QwtPlotSeriesItem (const QwtText &title)
	构造函数

virtual	~QwtPlotSeriesItem ()
	析构函数

void	setOrientation (Qt::Orientation)
	设置绘图项的方向

Qt::Orientation	orientation () const
	获取绘图项的方向

virtual void	draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override
	绘制完整系列

virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &) override
	更新刻度划分

Public 成员函数继承自 QwtPlotItem
	QwtPlotItem ()
	Default constructor

	QwtPlotItem (const QString &title)
	Constructor with title as QString

	QwtPlotItem (const QwtText &title)
	Constructor with title as QwtText

virtual	~QwtPlotItem ()
	Destructor

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

void	detach ()
	Detach the item from the plot

QwtPlot *	plot () const
	Get the plot the item is attached to

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

void	setTitle (const QwtText &title)
	Set the title using 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	setItemInterest (ItemInterest, bool on=true)
	Set an item interest

bool	testItemInterest (ItemInterest) const
	Test an item interest

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

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

QSize	legendIconSize () const
	Get the legend icon size

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
	Check if the item is visible

void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)
	Set both axes

void	setXAxis (QwtAxisId)
	Set the x-axis

QwtAxisId	xAxis () const
	Get the x-axis

void	setYAxis (QwtAxisId)
	Set the y-axis

QwtAxisId	yAxis () const
	Get the y-axis

virtual void	itemChanged ()
	Notify the plot that the item has changed

virtual void	legendChanged ()
	Notify the item that the legend has changed

virtual void	getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const
	Get margin hints for the canvas

virtual void	updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &)
	Update the item with changes of the legend

QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the scale rectangle

QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the paint rectangle

virtual QList< QwtLegendData >	legendData () const
	Return legend data

Public 成员函数继承自 QwtSeriesStore< QwtVectorFieldSample >
void	setData (QwtSeriesData< QwtVectorFieldSample > *series)

QwtSeriesData< QwtVectorFieldSample > *	data ()

const QwtSeriesData< QwtVectorFieldSample > *	data () const

QwtVectorFieldSample	sample (size_t index) const

virtual size_t	dataSize () const override

virtual QRectF	dataRect () const override

virtual void	setRectOfInterest (const QRectF &rect) override
	Set a the "rectangle of interest" for the stored series

QwtSeriesData< QwtVectorFieldSample > *	swapData (QwtSeriesData< QwtVectorFieldSample > *series)

Protected 成员函数
virtual void	drawSymbols (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
	Draw symbols

virtual void	drawSymbol (QPainter *, double x, double y, double vx, double vy) const
	Draw a arrow/symbols at a specific position

virtual void	dataChanged () override
	dataChanged() indicates, that the series has been changed.

Protected 成员函数继承自 QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Create a default icon

详细描述

表示矢量场的绘图项

成员枚举类型说明

◆ IndicatorOrigin

enum QwtPlotVectorField::IndicatorOrigin

指示器原点

枚举值
OriginHead	symbol points to the sample position
OriginTail	The arrow starts at the sample position
OriginCenter	The arrow is centered at the sample position

◆ MagnitudeMode

enum QwtPlotVectorField::MagnitudeMode

大小模式

枚举值

MagnitudeAsColor

大小将使用颜色映射映射到颜色

参见: magnitudeRange(), colorMap()

MagnitudeAsLength

大小将对箭头/符号的长度产生影响

参见: arrowLength(), magnitudeScaleFactor()

◆ PaintAttribute

enum QwtPlotVectorField::PaintAttribute

绘制属性

枚举值

FilterVectors

FilterVectors 计算同一网格单元中所有样本的平均样本，网格由设置 rasterSize() 确定。

参见: setRasterSize()

构造及析构函数说明

◆ QwtPlotVectorField() [1/2]

QwtPlotVectorField::QwtPlotVectorField ( const QString & title = QString() )

explicit

构造函数

◆ QwtPlotVectorField() [2/2]

QwtPlotVectorField::QwtPlotVectorField ( const QwtText & title )

explicit

构造函数

◆ ~QwtPlotVectorField()

QwtPlotVectorField::~QwtPlotVectorField ( )

virtual

析构函数

成员函数说明

◆ arrowLength()

double QwtPlotVectorField::arrowLength ( double magnitude ) const

virtual

根据给定大小计算箭头长度

◆ boundingRect()

QRectF QwtPlotVectorField::boundingRect ( ) const

overridevirtual

获取边界矩形

重载 QwtPlotSeriesItem .

◆ brush()

QBrush QwtPlotVectorField::brush ( ) const

获取用于填充符号的画刷

◆ colorMap()

const QwtColorMap * QwtPlotVectorField::colorMap ( ) const

获取用于将强度值映射到颜色的颜色映射

◆ dataChanged()

void QwtPlotVectorField::dataChanged ( )

overrideprotectedvirtual

dataChanged() indicates, that the series has been changed.

重载 QwtPlotSeriesItem .

◆ drawSeries()

void QwtPlotVectorField::drawSeries	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

overridevirtual

绘制点的一部分

实现了 QwtPlotSeriesItem.

◆ drawSymbol()

void QwtPlotVectorField::drawSymbol	(	QPainter *	painter,
		double	x,
		double	y,
		double	vx,
		double	vy
	)		const

protectedvirtual

Draw a arrow/symbols at a specific position

x, y, are paint device coordinates, while vx, vy are from the corresponding sample.

参见: setSymbol(), drawSeries()

◆ drawSymbols()

void QwtPlotVectorField::drawSymbols	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

protectedvirtual

Draw symbols

参数

painter	Painter
xMap	x map
yMap	y map
canvasRect	Contents rectangle of the canvas
from	Index of the first sample to be painted
to	Index of the last sample to be painted

参见: setSymbol(), drawSymbol(), drawSeries()

◆ indicatorOrigin()

QwtPlotVectorField::IndicatorOrigin QwtPlotVectorField::indicatorOrigin ( ) const

获取符号/箭头的原点

◆ legendIcon()

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

overridevirtual

获取图例上表示矢量场的图标

重载 QwtPlotItem .

◆ magnitudeRange()

QwtInterval QwtPlotVectorField::magnitudeRange ( ) const

获取用于颜色映射查找的大小范围

◆ magnitudeScaleFactor()

double QwtPlotVectorField::magnitudeScaleFactor ( ) const

获取用于从大小计算箭头长度的缩放因子

◆ maxArrowLength()

double QwtPlotVectorField::maxArrowLength ( ) const

获取箭头长度的最大值

◆ minArrowLength()

double QwtPlotVectorField::minArrowLength ( ) const

获取非零向量箭头长度的最小值

◆ pen()

QPen QwtPlotVectorField::pen ( ) const

获取用于绘制线条的画笔

◆ rasterSize()

QSizeF QwtPlotVectorField::rasterSize ( ) const

获取用于过滤样本的栅格大小

◆ rtti()

int QwtPlotVectorField::rtti ( ) const

overridevirtual

获取运行时类型信息

重载 QwtPlotItem .

◆ setBrush()

void QwtPlotVectorField::setBrush ( const QBrush & brush )

设置画刷

◆ setColorMap()

void QwtPlotVectorField::setColorMap ( QwtColorMap * colorMap )

更改颜色映射

◆ setIndicatorOrigin()

void QwtPlotVectorField::setIndicatorOrigin ( IndicatorOrigin origin )

设置符号/箭头的原点

◆ setMagnitudeMode()

void QwtPlotVectorField::setMagnitudeMode	(	MagnitudeMode	mode,
		bool	on = `true`
	)

指定表示箭头/符号大小的方式

◆ setMagnitudeRange()

void QwtPlotVectorField::setMagnitudeRange ( const QwtInterval & magnitudeRange )

设置用于颜色映射查找的大小范围

◆ setMagnitudeScaleFactor()

void QwtPlotVectorField::setMagnitudeScaleFactor ( double factor )

设置大小缩放因子

◆ setMaxArrowLength()

void QwtPlotVectorField::setMaxArrowLength ( double length )

设置箭头长度的最大值

◆ setMinArrowLength()

void QwtPlotVectorField::setMinArrowLength ( double length )

设置非零向量箭头长度的最小值

◆ setPaintAttribute()

void QwtPlotVectorField::setPaintAttribute	(	PaintAttribute	attribute,
		bool	on = `true`
	)

指定绘制曲线的属性

◆ setPen()

void QwtPlotVectorField::setPen ( const QPen & pen )

设置画笔

◆ setRasterSize()

void QwtPlotVectorField::setRasterSize ( const QSizeF & size )

设置用于过滤样本的栅格大小

◆ setSamples() [1/2]

void QwtPlotVectorField::setSamples ( const QVector< QwtVectorFieldSample > & samples )

用样本数组初始化数据

◆ setSamples() [2/2]

void QwtPlotVectorField::setSamples ( QwtVectorFieldData * data )

分配一系列样本

◆ setSymbol()

void QwtPlotVectorField::setSymbol ( QwtVectorFieldSymbol * symbol )

设置新的箭头符号

◆ symbol()

const QwtVectorFieldSymbol * QwtPlotVectorField::symbol ( ) const

获取箭头符号

◆ testMagnitudeMode()

bool QwtPlotVectorField::testMagnitudeMode ( MagnitudeMode mode ) const

测试大小模式

◆ testPaintAttribute()

bool QwtPlotVectorField::testPaintAttribute ( PaintAttribute attribute ) const

测试绘制属性

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_plot_vectorfield.h
/home/runner/work/QWT/QWT/src/plot/qwt_plot_vectorfield.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

◆ IndicatorOrigin

◆ MagnitudeMode

◆ PaintAttribute

构造及析构函数说明

◆ QwtPlotVectorField() [1/2]

◆ QwtPlotVectorField() [2/2]

◆ ~QwtPlotVectorField()

成员函数说明

◆ arrowLength()

◆ boundingRect()

◆ brush()

◆ colorMap()

◆ dataChanged()

◆ drawSeries()

◆ drawSymbol()

◆ drawSymbols()

◆ indicatorOrigin()

◆ legendIcon()

◆ magnitudeRange()

◆ magnitudeScaleFactor()

◆ maxArrowLength()

◆ minArrowLength()

◆ pen()

◆ rasterSize()

◆ rtti()

◆ setBrush()

◆ setColorMap()

◆ setIndicatorOrigin()

◆ setMagnitudeMode()

◆ setMagnitudeRange()

◆ setMagnitudeScaleFactor()

◆ setMaxArrowLength()

◆ setMinArrowLength()

◆ setPaintAttribute()

◆ setPen()

◆ setRasterSize()

◆ setSamples() [1/2]

◆ setSamples() [2/2]

◆ setSymbol()

◆ symbol()

◆ testMagnitudeMode()

◆ testPaintAttribute()