JKQTPGeoChord Class Reference

This JKQTPGeometricPlotElement is used to draw a chord. More...

#include <jkqtpgeoshapes.h>

Inheritance diagram for JKQTPGeoChord:

Collaboration diagram for JKQTPGeoChord:

Public Member Functions
	JKQTPGeoChord (JKQTBasePlotter *parent, double x, double y, double width, double height, double angleStart, double angleStop, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoChord (JKQTPlotter *parent, double x, double y, double width, double height, double angleStart, double angleStop, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
virtual void	draw (JKQTPEnhancedPainter &painter) override
	plots the graph to the plotter object specified as parent
virtual bool	getXMinMax (double &minx, double &maxx, double &smallestGreaterZero) override
	get the maximum and minimum x-value of the graph
virtual bool	getYMinMax (double &miny, double &maxy, double &smallestGreaterZero) override
	get the maximum and minimum y-value of the graph
Public Member Functions inherited from JKQTPGeoPie
	JKQTPGeoPie (JKQTBasePlotter *parent, double x, double y, double width, double height, double angleStart, double angleStop, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoPie (JKQTPlotter *parent, double x, double y, double width, double height, double angleStart, double angleStop, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
double	getAngleStart () const
	if we only draw an arc, this is the starting angle
double	getAngleStop () const
	if we only draw an arc, this is the ending angle
void	setAngleStart (double __value)
	if we only draw an arc, this is the starting angle
void	setAngleStop (double __value)
	if we only draw an arc, this is the ending angle
Public Member Functions inherited from JKQTPGeoEllipse
	JKQTPGeoEllipse (JKQTBasePlotter *parent, const QPointF &center, const QSizeF &size, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoEllipse (JKQTBasePlotter *parent, double x, double y, double width, double height, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoEllipse (JKQTBasePlotter *parent, QPointF bottomleft, QPointF topright, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoEllipse (JKQTPlotter *parent, const QPointF &center, const QSizeF &size, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoEllipse (JKQTPlotter *parent, double x, double y, double width, double height, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoEllipse (JKQTPlotter *parent, QPointF bottomleft, QPointF topright, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
Public Member Functions inherited from JKQTPGeoRectangle
	JKQTPGeoRectangle (JKQTBasePlotter *parent, const QPointF &center, const QSizeF &size, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoRectangle (JKQTBasePlotter *parent, double x, double y, double width, double height, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoRectangle (JKQTBasePlotter *parent, QPointF bottomleft, QPointF topright, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoRectangle (JKQTPlotter *parent, const QPointF &center, const QSizeF &size, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoRectangle (JKQTPlotter *parent, double x, double y, double width, double height, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
	JKQTPGeoRectangle (JKQTPlotter *parent, QPointF bottomleft, QPointF topright, DrawMode drawMode=DrawAsGraphicElement)
	class constructor
double	getAngle () const
	rotation angle of rectangle [degrees] around (x,y)
QRectF	getBottomLeftRectangle () const
	returns the rectangle using the bottom-left corner, as well as its width and height, ignoring the rotation angle!!!
QPointF	getCenter () const
	returns the center point of the rectangle
double	getHeight () const
	height of a center of the rectangle
QSizeF	getSize () const
	returns the size (width and height) of the rectangle
double	getWidth () const
	width of a center of the rectangle
double	getX () const
	x-coordinate of a center of the rectangle
double	getY () const
	y-coordinate of a center of the rectangle
void	setAngle (double __value)
	rotation angle of rectangle [degrees] around (x,y)
void	setBottomLeftRectangle (const QRectF &rect)
	set the rectangle using the bottom-left corner, as well as its width and height
void	setBottomLeftRectangle (double x, double y, double width, double height)
	set the rectangle using the bottom-left corner, as well as its width and height
void	setCenter (const QPointF &center)
	sets the center point of the rectangle
void	setHeight (double __value)
	height of a center of the rectangle
void	setSize (const QSizeF &size)
	sets the size (width and height) of the rectangle
void	setWidth (double __value)
	width of a center of the rectangle
void	setX (double __value)
	x-coordinate of a center of the rectangle
void	setY (double __value)
	y-coordinate of a center of the rectangle
Public Member Functions inherited from JKQTPGeoBaseFilled
	JKQTPGeoBaseFilled (JKQTBasePlotter *parent, DrawMode drawMode=DrawAsGraphicElement)
	class contructor
virtual void	drawKeyMarker (JKQTPEnhancedPainter &painter, const QRectF &rect) override
	plots a key marker inside the specified rectangle rect
virtual void	setAlpha (float alpha) override
	sets the alpha-channel of the color and fillColor (i.e. its transparency) to the same value
virtual void	setAlpha (float alphaLine, float alphaFill)
	sets the alpha-channel of the color and fillColor (i.e. its transparency)
virtual void	setColor (QColor c) override
	set line and fill color
virtual void	setStyle (QColor color, double lineWidth) override
	set several of the style properties with one call
virtual void	setStyle (QColor color, double lineWidth, Qt::PenStyle style) override
	set several of the style properties with one call
virtual void	setStyle (QColor color, double lineWidth, Qt::PenStyle style, QColor fillColor, const JKQTFillStyleSummmary &fillStyle)
	set several of the style properties with one call
virtual void	setStyle (QColor color, double lineWidth, Qt::PenStyle style, QColor fillColor, Qt::BrushStyle fillStyle)
	set several of the style properties with one call
void	setStyle (QColor color, QColor fillColor)
	set several of the style properties with one call
virtual void	setStyle (QColor color, Qt::PenStyle style) override
	set several of the style properties with one call
void	setStyleTransparentFill (QColor color)
	set several of the style properties with one call, sets fill to transparent
void	setStyleTransparentFill (QColor color, double lineWidth)
	set several of the style properties with one call, sets fill to transparent
void	setStyleTransparentFill (QColor color, double lineWidth, Qt::PenStyle style)
	set several of the style properties with one call, sets fill to transparent
void	setStyleTransparentFill (QColor color, Qt::PenStyle style)
	set several of the style properties with one call, sets fill to transparent
Public Member Functions inherited from JKQTPGeoBaseLine
	JKQTPGeoBaseLine (JKQTBasePlotter *parent, DrawMode drawMode=DrawAsGraphicElement)
	class contructor
virtual QColor	getKeyLabelColor () const override
	returns the color to be used for the key label
Public Member Functions inherited from JKQTPGeometricPlotElement
	JKQTPGeometricPlotElement (DrawMode drawMode=DrawAsGraphicElement, JKQTBasePlotter *parent=nullptr)
	class constructor
virtual	~JKQTPGeometricPlotElement ()
	default wirtual destructor
DrawMode	getDrawMode () const
	indicated whether to draw lines as graphic elements (even on non-linear coordinate systems), or as mathematically correct curves
Public Member Functions inherited from JKQTPPlotElement
	JKQTPPlotElement (JKQTBasePlotter *parent=nullptr)
	class constructor
virtual	~JKQTPPlotElement ()=default
	default wirtual destructor
QPointF	backTransform (const QPointF &x) const
	tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
QPointF	backTransform (double x, double y) const
	tool routine that back-transforms a QPointF according to the parent's transformation rules (pixels --> plot coordinate)
double	backtransformX (double x) const
	tool routine that backtransforms an x-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in xAxisRef
double	backtransformY (double y) const
	tool routine that backtransforms a y-coordinate (pixels --> plot coordinate) for this plot element, uses the axis referenced in yAxisRef
virtual void	drawOutside (JKQTPEnhancedPainter &painter, QRect leftSpace, QRect rightSpace, QRect topSpace, QRect bottomSpace)
	plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
QImage	generateKeyMarker (QSize size=QSize(16, 16))
	returns an image with a key marker inside
virtual void	getOutsideSize (JKQTPEnhancedPainter &painter, int &leftSpace, int &rightSpace, int &topSpace, int &bottomSpace)
	if the graph plots outside the actual plot field of view (e.g. color bars, scale bars, ...)
JKQTBasePlotter *	getParent ()
	returns the parent painter class
const JKQTBasePlotter *	getParent () const
	returns the parent painter class
QString	getTitle () const
	returns the the title of the plot
const JKQTPCoordinateAxis *	getXAxis () const
	returns the actual x-Axis-object from the parent plotter, referenced in xAxisRef
JKQTPCoordinateAxisRef	getXAxisRef () const
	indicates which coordinate axis to use for coordinate transforms in x-direction
const JKQTPCoordinateAxis *	getYAxis () const
	returns the actual y-Axis-object from the parent plotter, referenced in yAxisRef
JKQTPCoordinateAxisRef	getYAxisRef () const
	indicates which coordinate axis to use for coordinate transforms in y-direction
virtual double	hitTest (const QPointF &posSystem, QPointF *closestSpotSystem=nullptr, QString *label=nullptr, HitTestMode mode=HitTestXY) const
	returns the closest distance of the plot element to the (screen pixel) position pos, or NAN
bool	isHighlighted () const
	returns whether the graph is shown in a highlighted style in the plot
bool	isVisible () const
	returns whether the graph is visible in the plot
void	setAxes (JKQTPCoordinateAxisRef ref)
	set the coordinate axes to use for this plot element
virtual void	setParent (JKQTBasePlotter *parent)
	sets the parent painter class
virtual void	setParent (JKQTPlotter *parent)
	sets the parent painter class
void	setXAxis (JKQTPCoordinateAxisRef ref)
	indicates which coordinate axis to use for coordinate transforms in x-direction
void	setYAxis (JKQTPCoordinateAxisRef ref)
	indicates which coordinate axis to use for coordinate transforms in y-direction
QPointF	transform (const QPointF &x) const
	tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPolygonF	transform (const QPolygonF &x) const
	tool routine that transforms a QPolygonF according to the parent's transformation rules (plot coordinate --> pixels)
QPointF	transform (double x, double y) const
	tool routine that transforms a QPointF according to the parent's transformation rules (plot coordinate --> pixels)
QPainterPath	transformToLinePath (const QPolygonF &x) const
	tool routine that transforms a QPolygonF according to the parent's transformation rules and returns a (non-closed) path consisting of lines (plot coordinate --> pixels)
QVector< double >	transformX (const QVector< double > &x) const
	transform all x-coordinates in a vector x
double	transformX (double x) const
	tool routine that transforms an x-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in xAxisRef
QVector< double >	transformY (const QVector< double > &x) const
	transform all y-coordinates in a vector x
double	transformY (double y) const
	tool routine that transforms a y-coordinate (plot coordinate --> pixels) for this plot element, uses the axis referenced in yAxisRef
Public Member Functions inherited from JKQTPGraphLineStyleMixin
	JKQTPGraphLineStyleMixin ()
	class constructor
virtual	~JKQTPGraphLineStyleMixin ()
QColor	getHighlightingLineColor () const
	get the color of the graph line when highlighted
QPen	getHighlightingLinePen (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties
QPen	getHighlightingLinePenForRects (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties, suitable for drawing rectangle with sharp corners
QPen	getKeyLinePen (JKQTPEnhancedPainter &painter, const QRectF &rect, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties, but uses getKeyLineWidthPx() for the width, i.e. constructs a pen for drawing lines in key-symbols
double	getKeyLineWidthPx (JKQTPEnhancedPainter &painter, const QRectF &keyRect, const JKQTBasePlotter *parent) const
	returns the linewidth for drawing lines in a key entry with keyRect for the symbol, using painter and parent .
QBrush	getLineBrush () const
	gets the brush used to fill the line area
Qt::PenCapStyle	getLineCapStyle () const
	gets the cap style
QColor	getLineColor () const
	get the color of the graph line
qreal	getLineDashOffset () const
	returns the dash offset for a custom dash style
QVector< qreal >	getLineDashPattern () const
	gets the dash pattern for a custom dash style
Qt::PenJoinStyle	getLineJoinStyle () const
	returns the join style
QPen	getLinePen (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties
QPen	getLinePenForRects (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QPen from the line styling properties, suitable for drawing rectangles with sharp edges
Qt::PenStyle	getLineStyle () const
	get the style of the graph line
double	getLineWidth () const
	get the line width of the graph line (in pt)
void	initLineStyle (JKQTBasePlotter *parent, int &parentPlotStyle, JKQTPPlotStyleType styletype=JKQTPPlotStyleType::Default)
	initiaize the line style (from the parent plotter)
void	setHighlightingLineColor (const QColor &__value)
	set the color of the graph line when highlighted
void	setHighlightingLineColor (const QColor &__value, double alpha)
	set the color of the graph line when highlighted
void	setLineBrush (const QBrush &style)
	sets the brush used to fill the line area
void	setLineCapStyle (Qt::PenCapStyle style)
	sets the cap style
void	setLineColor (const QColor &__value)
	set the color of the graph line
void	setLineColor (const QColor &__value, double alpha)
	set the color of the graph line
void	setLineColorInvertedFrom (QColor __noninvertedColor)
	sets the line-color as an inverted version of the given color
void	setLineDashOffset (qreal offset)
	sets the dash offset for a custom dash style
void	setLineDashPattern (const QVector< qreal > &pattern)
	sets the dash pattern for a custom dash style
void	setLineJoinStyle (Qt::PenJoinStyle style)
	sets the join style
void	setLineStyle (Qt::PenStyle __value)
	set the style of the graph line
void	setLineWidth (double __value)
	set the line width of the graph line (in pt)
Public Member Functions inherited from JKQTPGraphFillStyleMixin
	JKQTPGraphFillStyleMixin ()
	class constructor
virtual	~JKQTPGraphFillStyleMixin ()
QBrush	getFillBrush (JKQTPEnhancedPainter &painter, JKQTBasePlotter *parent) const
	constructs a QBrush from the graph fill styling properties
QColor	getFillColor () const
	set the color of the graph filling
const QGradient *	getFillGradient () const
	get the gradient object of the graph filling
Qt::BrushStyle	getFillStyle () const
	get the fill style of the graph
QPixmap	getFillTexture () const
	set the color of the graph filling
QImage	getFillTextureImage () const
	set the color of the graph filling
void	initFillStyle (JKQTBasePlotter *parent, int &parentPlotStyle, JKQTPPlotStyleType styletype=JKQTPPlotStyleType::Default)
	initiaize the fill style (from the parent plotter)
void	initFillStyleInvertedColor (JKQTPGraphFillStyleMixin *other)
	initiaize the fill style from another JKQTPGraphFillStyleMixin other by inverting its fill color
void	setFillBrush (const QBrush &b)
	sets a fill brush (overwrites all internal properties!)
void	setFillColor (const QColor &__value)
	set the color of the graph filling
void	setFillColor (const QColor &__value, double alpha)
	set the color of the graph filling
void	setFillGradient (const QGradient &__value)
	set the filling of the graph to a gradient and sets fill style to a gradient setting
void	setFillStyle (Qt::BrushStyle __value)
	set the fill style of the graph
void	setFillTexture (const QImage &__value)
	set the color of the graph filling and sets fill style to Qt::TexturePattern
void	setFillTexture (const QPixmap &__value)
	set the color of the graph filling and sets fill style to Qt::TexturePattern
void	setFillTransform (const QTransform &b)
	sets a fill transformation

Additional Inherited Members
Public Types inherited from JKQTPGeometricPlotElement
enum	DrawMode {   DrawAsGraphicElement ,   DrawAsMathematicalCurve }
	indicates how to draw the geometric object More...
Public Types inherited from JKQTPPlotElement
enum	HitTestMode {   HitTestXY ,   HitTestXOnly ,   HitTestYOnly }
	modes of operation for the function hitTest() More...
Public Slots inherited from JKQTPGeometricPlotElement
void	setDrawMode (DrawMode mode)
	indicated whether to draw lines as graphic elements (even on non-linear coordinate systems), or as mathematically correct curves
Public Slots inherited from JKQTPPlotElement
void	setHighlighted (bool __value)
	sets whether the graph is drawn in a highlighted style in the plot
virtual void	setTitle (const QString &__value)
	sets the title of the plot (for display in key!).
void	setVisible (bool __value)
	sets whether the graph is visible in the plot
Protected Types inherited from JKQTPGeoEllipse
enum class	InternalDrawMode {   Ellipse ,   Pie ,   Chord }
	drawing modes for drawInternal() More...
Protected Member Functions inherited from JKQTPGeoEllipse
void	drawInternal (JKQTPEnhancedPainter &painter, double angleStart=0, double angleStop=0, InternalDrawMode mode=InternalDrawMode::Ellipse)
	inertnal draw function, can draw an ellipse, a pie or a chord!
Protected Member Functions inherited from JKQTPGeoRectangle
QPolygonF	getPolygon ()
	returns a QPolygonF which represents the rectangle after rotation, but still in the world coordinate system, not in the screen/widget system
QTransform	getTransform ()
	returns the transformation matrix used for this rectangle
Protected Member Functions inherited from JKQTPPlotElement
void	addHitTestData (const HitTestLocation &loc)
	clear the internal datastore for hitTest()
void	addHitTestData (const QPointF &pos_, const QString &label_)
	clear the internal datastore for hitTest()
void	addHitTestData (const QPointF &pos_, int index_, const QString &label_)
	clear the internal datastore for hitTest()
void	addHitTestData (const QPointF &pos_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
	clear the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void	addHitTestData (double x_, double y_, const QString &label_)
	add a new point on the graph to the internal datastore for hitTest()
void	addHitTestData (double x_, double y_, int index_, const QString &label_)
	clear the internal datastore for hitTest()
void	addHitTestData (double x_, double y_, int index_=-1, const JKQTPDatastore *datastore=nullptr)
	add a new point on the graph to the internal datastore for hitTest(), this variant uses formatHitTestDefaultLabel() to auto-generate the label
void	clearHitTestData ()
	clear the internal datastore for hitTest()
virtual QString	formatHitTestDefaultLabel (double x, double y, int index=-1, const JKQTPDatastore *datastore=nullptr) const
	tool-function for hitTest(), which formats a default label, taking into account the x- and y-position (both provided) and optionally the errors of these positions.
void	reserveHitTestData (int points)
	reserve list entries for up to points graph points in the internal datastore for hitTest()
QString	xFloatToString (double v, int past_comma=-1) const
	converts a x-value v into a string, taking into account the type of x-axis
QString	yFloatToString (double v, int past_comma=-1) const
	converts a x-value v into a string, taking into account the type of x-axis
Protected Attributes inherited from JKQTPGeoPie
double	angleStart
	if we only draw an arc, this is the starting angle
double	angleStop
	if we only draw an arc, this is the ending angle
Protected Attributes inherited from JKQTPGeoRectangle
double	angle
	rotation angle of rectangle [degrees] around (x,y)
double	height
	height of a center of the rectangle
double	width
	width of a center of the rectangle
double	x
	x-coordinate of a center of the rectangle
double	y
	y-coordinate of a center of the rectangle
Protected Attributes inherited from JKQTPGeometricPlotElement
DrawMode	m_drawMode
	indicated whether to draw lines as graphic elements (even on non-linear coordinate systems), or as mathematically correct curves
Protected Attributes inherited from JKQTPPlotElement
QVector< HitTestLocation >	m_hitTestData
	dataset with graph-points and associated data from the function hitTest()
JKQTBasePlotter *	parent
	the plotter object this object belongs to
int	parentPlotStyle
	internal storage for the used parent plot style
Properties inherited from JKQTPGeometricPlotElement
DrawMode	drawMode
Properties inherited from JKQTPPlotElement
bool	highlighted
	indicates whether the graph is shown in a "highlghted" in the plot
QString	title
	title of the plot (for display in key!). If no title is supplied, no key entry is drawn.
bool	visible
	indicates whether the graph is visible in the plot
JKQTPCoordinateAxisRef	xAxisRef
	indicates which coordinate axis to use for coordinate transforms in x-direction
JKQTPCoordinateAxisRef	yAxisRef
	indicates which coordinate axis to use for coordinate transforms in y-direction
Properties inherited from JKQTPGraphLineStyleMixin
QColor	highlightingLineColor
QColor	lineColor
Qt::PenStyle	lineStyle
double	lineWidth
Properties inherited from JKQTPGraphFillStyleMixin
QColor	fillColor
Qt::BrushStyle	fillStyle

Detailed Description

This JKQTPGeometricPlotElement is used to draw a chord.

A chord on linear and log-log axes (start angle: 10deg and end-angle 110deg):

Note

This function support the JKQTPGeometricPlotElement::DrawMode::DrawAsMathematicalCurve only. This means that chords are always treated as mathematical curves, as no meaningful parametrization for chords on non-linear axes could be found!

See also

Example (JKQTPlotter): Plotting Geometric Objects, JKQTPGeoPie, JKQTPGeoEllipse, JKQTPGeoArc

Constructor & Destructor Documentation

JKQTPGeoChord() [1/2]

JKQTPGeoChord::JKQTPGeoChord	(	JKQTBasePlotter *	parent,
		double	x,
		double	y,
		double	width,
		double	height,
		double	angleStart,
		double	angleStop,
		DrawMode	drawMode = DrawAsGraphicElement
	)

class constructor

Parameters

parent	the parent plotter object
x	x-coordinate of center of ellipse
y	y-coordinate of center of ellipse
width	width of ellipse (2 * half axis)
height	of ellipse (2 * half axis)
angleStart	if we only draw an arc, this is the starting angle in degrees
angleStop	if we only draw an arc, this is the ending angle in degrees
drawMode	draw the rectangle as a graphic or geometric element

JKQTPGeoChord() [2/2]

JKQTPGeoChord::JKQTPGeoChord	(	JKQTPlotter *	parent,
		double	x,
		double	y,
		double	width,
		double	height,
		double	angleStart,
		double	angleStop,
		DrawMode	drawMode = DrawAsGraphicElement
	)

class constructor

Parameters

parent	the parent plotter object
x	x-coordinate of center of ellipse
y	y-coordinate of center of ellipse
width	width of ellipse (2 * half axis)
height	of ellipse (2 * half axis)
angleStart	if we only draw an arc, this is the starting angle in degrees
angleStop	if we only draw an arc, this is the ending angle in degrees
drawMode	draw the rectangle as a graphic or geometric element

Member Function Documentation

draw()

virtual void JKQTPGeoChord::draw ( JKQTPEnhancedPainter &  painter )

overridevirtual

plots the graph to the plotter object specified as parent

Note

This function support the JKQTPGeometricPlotElement::DrawMode::DrawAsMathematicalCurve only. This means that chords are always treated as mathematical curves, as no meaningful parametrization for chords on non-linear axes could be found!

Reimplemented from JKQTPGeoPie.

getXMinMax()

virtual bool JKQTPGeoChord::getXMinMax ( double &  minx, double &  maxx, double &  smallestGreaterZero  )

overridevirtual

get the maximum and minimum x-value of the graph

The result is given in the two parameters which are call-by-reference parameters!

Parameters

[out]	minx	minimal x-value used in the graph
[out]	maxx	maximal x-value used in the graph
[out]	smallestGreaterZero	the smalles x-value in the graph, which is larger than 0 (this is used in auto-sizing for logarithmic axes)

Returns

true on success, i.e. if there were datapoints in the plot, or false on failure (e.g. when the graph is empty)

Reimplemented from JKQTPGeoPie.

getYMinMax()

virtual bool JKQTPGeoChord::getYMinMax ( double &  miny, double &  maxy, double &  smallestGreaterZero  )

overridevirtual

get the maximum and minimum y-value of the graph

The result is given in the two parameters which are call-by-reference parameters!

Parameters

[out]	miny	minimal y-value used in the graph
[out]	maxy	maximal y-value used in the graph
[out]	smallestGreaterZero	the smalles y-value in the graph, which is larger than 0 (this is used in auto-sizing for logarithmic axes)

Returns

true on success, i.e. if there were datapoints in the plot, or false on failure (e.g. when the graph is empty)

Reimplemented from JKQTPGeoPie.

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The documentation for this class was generated from the following file:

• jkqtpgeoshapes.h