Class QAccelPlot::LineCurve¶

ClassList > QAccelPlot > LineCurve

A hardware-accelerated QML item that renders a 2D line curve with optional markers, dashing, and gradient effects. More...

#include <LineCurve.hpp>

Inherits the following classes: QAccelPlot::PlotSeries

Inheritance diagram¶

flowchart TB
  classQAccelPlot_1_1LineCurve["QAccelPlot::LineCurve"]

  classQAccelPlot_1_1PlotSeries["QAccelPlot::PlotSeries"]
  classQAccelPlot_1_1PlotSeries --> classQAccelPlot_1_1LineCurve
  click classQAccelPlot_1_1PlotSeries "../classQAccelPlot_1_1PlotSeries/" "Open QAccelPlot::PlotSeries"

  external_base_classQAccelPlot_1_1PlotSeries_1["QQuickItem"]
  external_base_classQAccelPlot_1_1PlotSeries_1 --> classQAccelPlot_1_1PlotSeries

Public Types inherited from QAccelPlot::PlotSeries¶

See QAccelPlot::PlotSeries

Type	Name
enum	LegendSymbol Supported default legend symbols.

Public Properties¶

Type	Name
property qreal	antialiasingFeather Antialiasing feather width in pixels, clamped to [0, 10]. Has effect only when the inherited `antialiasing` is`true` . Default: 1.
property QColor	color Base line color. Default: `Colors.dark.seriesPrimary` .
property QQmlListProperty< LineCurveEffect >	effects List of visual effects (e.g. GradientFill ,GradientStroke ) applied to this curve.
property LineCurveGaps *	gaps Grouped gap-rendering settings, e.g. `gaps.nanMode` .
property qreal	hoverRadius Pick distance in pixels from the line; 0 disables line hover. Markers are picked within their size. Default: 10.
property LineStyle *	lineStyle Line style ( SolidLine ,DashLine , orNoLine ). Default:SolidLine .
property qreal	lineWidth Line stroke width in pixels. Default: 1.
property SeriesMarker *	marker Grouped marker settings, e.g. `marker.shape` and`marker.size` .
property StepMode	stepMode How the line joins consecutive data points. Default: `StepMode.None` .
property DataTransition *	transition Optional data transition animation applied when new data arrives.

Public Properties inherited from QAccelPlot::PlotSeries¶

See QAccelPlot::PlotSeries

Type	Name
property int	count Read-only: number of records stored, including invalid ones.
property quint64	dataRevision Revision incremented by every accepted change of the series' records.
property bool	hoverEnabled Whether the series reacts to the mouse cursor. Default: `true` .
property bool	hovered Read-only: `true` while the mouse cursor is over the series.
property SeriesInspection *	inspection Read-only constant: data queries for this series.
property LegendSymbol	legendSymbol Symbol style requested from the default legend.
property QString	name Identifying name used by the default legend.
property QRectF	plotRect Plot area in parent-item coordinates, assigned by `PlotView` .
property Axis *	xAxis Horizontal axis used for data-to-pixel coordinate mapping.
property Axis *	yAxis Vertical axis used for data-to-pixel coordinate mapping.

Public Signals¶

Type	Name
signal void	antialiasingFeatherChanged Emitted when the antialiasingFeather property changes.
signal void	colorChanged Emitted when the color property changes.
signal void	hoverRadiusChanged Emitted when the hoverRadius property changes.
signal void	lineStyleChanged Emitted when the lineStyle property changes.
signal void	lineWidthChanged Emitted when the lineWidth property changes.
signal void	stepModeChanged Emitted when the stepMode property changes.
signal void	transitionChanged Emitted when the transition property changes.

Public Signals inherited from QAccelPlot::PlotSeries¶

See QAccelPlot::PlotSeries

Type	Name
signal void	countChanged Emitted when the number of records changes.
signal void	dataRevisionChanged Emitted when the dataRevision property changes.
signal void	hoverEnabledChanged Emitted when the hoverEnabled property changes.
signal void	hoveredChanged Emitted when the hovered property changes.
signal void	legendEntryChanged Emitted when the result of `legendEntry()` or`legendEntries()` changes.
signal void	legendSymbolChanged
signal void	nameChanged
signal void	plotRectChanged
signal void	xAxisChanged
signal void	yAxisChanged

Public Functions¶

Type	Name
	LineCurve (QQuickItem * parent=nullptr) Constructs a LineCurve with the given__parent .
qreal	antialiasingFeather () const Returns the antialiasing feather width in pixels.
Q_INVOKABLE void	appendData (qreal x, qreal y) Appends a single data point ( x _,_y ) to the curve. Triggers a redraw.
virtual Q_INVOKABLE void	clearData () override Removes all data points from the curve.
QColor	color () const Returns the base line color.
QQmlListProperty< LineCurveEffect >	effects () Returns the QML list property for attached visual effects.
LineCurveGaps *	gaps () const Returns the grouped gap-rendering settings. The object is owned by the curve.
qreal	hoverRadius () const Returns the hover pick distance from the line in pixels.
virtual std::optional< LegendEntry >	legendEntry () override const Returns the legend entry: the symbol, color, line, and marker of the curve.
LineStyle *	lineStyle () const Returns the active line style.
qreal	lineWidth () const Returns the line stroke width.
SeriesMarker *	marker () const Returns the grouped marker settings. The object is owned by the curve.
void	postData (std::vector< double > && data, int count) Queues a moved double buffer for assignment on the series' thread.
void	postData (std::vector< float > && data, int count) Queues a moved float buffer for assignment on the series' thread.
void	setAntialiasingFeather (qreal feather) Sets the antialiasing feather width to feather pixels, clamped to [0, 10].
void	setColor (const QColor & c) Sets the line color to c .
Q_INVOKABLE void	setData (const QList< QPointF > & data) Replaces the curve data with data (a list of QPointF values).
void	setData (const std::vector< double > & xs, const std::vector< double > & ys) Sets data from separate X and Y vectors. If sizes don't match, the shorter length is used.
void	setData (const double * data, int count) Replaces the series data with count data points copied from an interleaved double array.
void	setData (std::vector< double > && data, int count) Replaces the series data by moving an interleaved double buffer.
void	setData (const double * data, int count, const DataBounds & bounds) Like `setData` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setData (std::vector< double > && data, int count, const DataBounds & bounds) Like `setData` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setDataF (const float * data, int count) Replaces the series data with count data points copied from an interleaved float array.
void	setDataF (std::vector< float > && data, int count) Replaces the series data by moving an interleaved float buffer.
void	setDataF (const float * data, int count, const DataBounds & bounds) Like `setDataF` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setDataF (std::vector< float > && data, int count, const DataBounds & bounds) Like `setDataF` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setHoverRadius (qreal radius) Sets the hover pick distance from the line to radius pixels. Negative values are clamped to 0. Marker hit testing is unaffected.
void	setLineStyle (LineStyle * style) Sets the line style to style .
void	setLineWidth (qreal w) Sets the line stroke width to w pixels.
void	setStepMode (StepMode mode) Sets how the line joins consecutive data points to mode .
void	setTransition (DataTransition * transition) Sets the data transition to transition .
StepMode	stepMode () const Returns how the line joins consecutive data points.
DataTransition *	transition () const Returns the active data transition, or `nullptr` if none.
	~LineCurve () override Destroys the curve, ending its animation on the assigned transition.

Public Functions inherited from QAccelPlot::PlotSeries¶

See QAccelPlot::PlotSeries

Type	Name
	PlotSeries (QQuickItem * parent=nullptr)
virtual void	clearData () Removes all data points from the series.
virtual int	count () const Returns the number of records stored. The default is the number of stored data points.
quint64	dataRevision () const Returns the current data revision.
bool	hoverEnabled () const Returns whether the series reacts to the mouse cursor.
bool	hovered () const Returns whether the mouse cursor is over the series.
SeriesInspection *	inspection () const Returns the data queries for this series; created on first use and owned by the series.
virtual QList< LegendEntry >	legendEntries () const Returns the legend rows of the series. Default: the `legendEntry()` , if any.
virtual std::optional< LegendEntry >	legendEntry () const Returns how a legend draws the series, or `std::nullopt` for no legend entry. Default: no entry.
LegendSymbol	legendSymbol () const
QString	name () const
QRectF	plotRect () const
void	postData (std::vector< double > && data, int count) Queues a moved double buffer for assignment on the series' thread.
void	postData (std::vector< float > && data, int count) Queues a moved float buffer for assignment on the series' thread.
void	setData (const double * data, int count) Replaces the series data with count data points copied from an interleaved double array.
void	setData (std::vector< double > && data, int count) Replaces the series data by moving an interleaved double buffer.
void	setData (const double * data, int count, const DataBounds & bounds) Like `setData` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setData (std::vector< double > && data, int count, const DataBounds & bounds) Like `setData` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setDataF (const float * data, int count) Replaces the series data with count data points copied from an interleaved float array.
void	setDataF (std::vector< float > && data, int count) Replaces the series data by moving an interleaved float buffer.
void	setDataF (const float * data, int count, const DataBounds & bounds) Like `setDataF` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setDataF (std::vector< float > && data, int count, const DataBounds & bounds) Like `setDataF` _(_data _,_count ), with the data extents given as__bounds instead of scanned for.
void	setHoverEnabled (bool enabled) Sets whether the series reacts to the mouse cursor to enabled .
void	setLegendSymbol (LegendSymbol symbol)
void	setName (const QString & name)
void	setPlotRect (const QRectF & rect) Updates the series geometry to exactly cover rect .
void	setXAxis (Axis * axis)
void	setYAxis (Axis * axis)
Axis *	xAxis () const
std::optional< DataExtent >	xDataRange () const Returns the extent this series reports to its horizontal axis, or `std::nullopt` when it has none.
Axis *	yAxis () const
std::optional< DataExtent >	yDataRange () const Returns the extent this series reports to its vertical axis, or `std::nullopt` when it has none.
	~PlotSeries () override

Protected Types inherited from QAccelPlot::PlotSeries¶

See QAccelPlot::PlotSeries

Type	Name
enum	CapacityOverflow What a series draws when its records outgrow its GPU capacity.
enum	DataChange How the records changed in a data update.

Protected Attributes inherited from QAccelPlot::PlotSeries¶

See QAccelPlot::PlotSeries

Type	Name
bool	overRenderCapacity_ = `{false}` Whether the record count of the last `updateRenderCapacity()` exceeded`renderCapacity_` .
int	renderCapacity_ = `{std::numeric\_limits<int>::max()}` Records the GPU buffers hold, as of the last `updateRenderCapacity()` ; the largest`int` before the first.

Protected Functions¶

Type	Name
virtual void	applyDataPoints (DataPointInput && input) override Applies new points, animating to them when a transition is enabled.
bool	contains (const QPointF & point) override const Returns `true` if__point lies within the curve's hit-test region.
virtual void	onAxisScaleChanged () override Refreshes cached geometry when a bound axis changes between linear and log scale.
virtual void	onDataPointsChanged (DataChange change, int previousCount) override Refreshes the vertex cache and the hit-test chunks after the points changed.

Protected Functions inherited from QAccelPlot::PlotSeries¶

See QAccelPlot::PlotSeries

Type	Name
	PlotSeries (DataPointStore::Layout layout, DataPointWording wording, QQuickItem * parent) Creates a series whose data points have layout _;_wording names them in warnings.
void	appendDataPoint (const double * coordinates) Appends one double data point and widens the data ranges by its valid coordinates.
virtual void	applyDataPoints (DataPointInput && input) Applies data points passed to `setData()` or`setDataF()` .
virtual DataRanges	computeDataRanges () const Scans the records for their extents. The default implementation scans the data points.
virtual int	dataPointValueCount () const Returns the number of values per data point that `setData()` and`setDataF()` take.
DataPointStore &	dataPoints () Returns the data points of the series.
const DataPointStore &	dataPoints () const Returns the data points of the series.
bool	event (QEvent * event) override Withholds hover events from a series beneath another series under the cursor.
void	extendXDataRange (qreal x) Widens the X extent to include x and notifies the bound axes.
void	extendYDataRange (qreal y) Widens the Y extent to include y . A non-finite__y leaves the extent unchanged.
virtual bool	inspectionAvailable () const Returns false while the records are ambiguous, such as during a data transition. Default: true.
void	inspectionDataChanged (DataChange change=DataChange::Replaced) Advances the data revision and refreshes the data queries. Call after every accepted record change.
virtual InspectionDataPoint	inspectionDataPointAt (const QPointF & position) const Returns the record drawn at the series-local position as a data point. Default: unsupported.
virtual InspectionRecord	inspectionRecord (int index) const Returns the native record at index for series that are not plain XY series. Default: unsupported.
virtual InspectionRecord	inspectionRecordAt (const QPointF & position) const Returns the native record drawn at the series-local position . Default: unsupported.
virtual Internal::InspectionSource	inspectionSource () const Returns a view of the XY records that data point queries search. The default has none.
void	invalidateDataRanges () Discards the cached extents and notifies the bound axes.
void	invalidateInspection () Refreshes the data queries after record validity changed without a data change, such as an axis scale switch.
bool	logScaleX () const Returns whether the horizontal axis is logarithmic; false without an axis.
bool	logScaleY () const Returns whether the vertical axis is logarithmic; false without an axis.
void	notifyDataPointsChanged (DataChange change, int previousCount) Finishes a change of the data points: data ranges, `onDataPointsChanged()` ,`countChanged()` , data queries, and a repaint.
virtual void	onAxisRangeChanged () Called when the viewport of a bound axis changes. The default implementation schedules a repaint.
virtual void	onAxisScaleChanged () Called when a bound axis switches between linear and logarithmic scale, or a different axis is bound.
virtual void	onDataPointsChanged (DataChange change, int previousCount) Called after the data points changed, before the data queries are refreshed. The default does nothing.
virtual bool	positionInspectionSupported () const Returns whether `inspectionDataPointAt()` matches records drawn as areas, such as heatmap cells. Default: false.
virtual bool	recordInspectionSupported () const Returns whether `inspectionRecord()` and`inspectionRecordAt()` answer for this series. Default: false.
QRectF	resolvePlotRect () const Returns the plot area to render into: `plotRect` when set, otherwise the item's current size.
void	setHovered (bool hovered) Sets the hovered property to hovered . Called by the hover handling of a series.
void	storeDataPoints (DataPointInput && input) Stores input as the data points and finishes the change.
void	supportHover () Makes the series accept hover events while `hoverEnabled` is`true` .
void	updateRenderCapacity (int capacity, int recordCount, CapacityOverflow overflow=CapacityOverflow::DropsExcess) Stores capacity , the number of records the GPU buffers hold, and warns when__recordCount newly exceeds it.
bool	validateDataSize (std::size_t valueCount, int count, bool floatData, int valuesPerDataPoint=0) const Returns whether valueCount values hold__count data points; warns otherwise.
bool	validateRawDataArguments (const void * data, int count) const Returns whether data and__count are valid arguments for copying data points; warns otherwise.

Detailed Description¶

The setData() overloads retain double-precision coordinates, including large timestamp values. Methods whose names end in F store interleaved float XY pairs [x0, y0, x1, y1, …]. For maximum throughput prefer setDataF(std::vector<float>&&, int) or postData(std::vector<float>&&, int), which move an already-interleaved float buffer with zero allocation and no type conversion. postData(std::vector<double>&&, int) hands off a double-precision buffer from a worker thread instead. The curve is rendered on the Qt Scene Graph render thread using GPU-side data textures, making it suitable for real-time plots with millions of points.

** **

Markers are configured through the marker grouped property, for example marker.shape: QAccelPlot.MarkerShape.Circle. No markers are drawn by default.

** **

Visual effects (gradient stroke, gradient fill) are attached via the effects list property.

** **

Animated data updates are enabled by assigning a DrawTransition or MorphTransition to transition. Several curves can share one transition. Replacing or clearing transition, cancelling it, or appending data during an animation skips to the new data.

** **

stepMode draws the line as steps, for example stepMode: QAccelPlot.StepMode.After. The gradient fill, dash pattern, and hover follow the steps, markers stay on the data points, and interpolated inspection reads the value a step holds. The line follows the data points in order and is not sorted by X.

** **

A data point is invalid when its X or Y coordinate is NaN or ±Inf, or is not strictly positive on a log-scale axis. Invalid data points are never drawn as markers, never hit-tested, and are excluded from auto-ranging coordinate by coordinate (a finite X with an invalid Y still extends the X range). How the line and gradient fill treat them is controlled by the gaps grouped property: gaps.nanMode Break (default) leaves a gap, Connect joins the neighboring valid data points. Insert NaN to mark missing telemetry explicitly. With a step mode and Break, a value holds up to the X of an invalid neighbor when that X is finite.

Public Properties Documentation¶

property antialiasingFeather¶

Antialiasing feather width in pixels, clamped to [0, 10]. Has effect only when the inherited antialiasing istrue . Default: 1.

qreal QAccelPlot::LineCurve::antialiasingFeather;

property color¶

Base line color. Default: Colors.dark.seriesPrimary .

QColor QAccelPlot::LineCurve::color;

property effects¶

List of visual effects (e.g. GradientFill ,GradientStroke ) applied to this curve.

QQmlListProperty<LineCurveEffect> QAccelPlot::LineCurve::effects;

property gaps¶

Grouped gap-rendering settings, e.g. gaps.nanMode .

LineCurveGaps* QAccelPlot::LineCurve::gaps;

property hoverRadius¶

Pick distance in pixels from the line; 0 disables line hover. Markers are picked within their size. Default: 10.

qreal QAccelPlot::LineCurve::hoverRadius;

property lineStyle¶

Line style ( SolidLine ,DashLine , orNoLine ). Default:SolidLine .

LineStyle* QAccelPlot::LineCurve::lineStyle;

property lineWidth¶

Line stroke width in pixels. Default: 1.

qreal QAccelPlot::LineCurve::lineWidth;

property marker¶

Grouped marker settings, e.g. marker.shape andmarker.size .

SeriesMarker* QAccelPlot::LineCurve::marker;

property stepMode¶

How the line joins consecutive data points. Default: StepMode.None .

StepMode QAccelPlot::LineCurve::stepMode;

property transition¶

Optional data transition animation applied when new data arrives.

DataTransition* QAccelPlot::LineCurve::transition;

Public Signals Documentation¶

signal antialiasingFeatherChanged¶

Emitted when the antialiasingFeather property changes.

void QAccelPlot::LineCurve::antialiasingFeatherChanged;

signal colorChanged¶

Emitted when the color property changes.

void QAccelPlot::LineCurve::colorChanged;

signal hoverRadiusChanged¶

Emitted when the hoverRadius property changes.

void QAccelPlot::LineCurve::hoverRadiusChanged;

signal lineStyleChanged¶

Emitted when the lineStyle property changes.

void QAccelPlot::LineCurve::lineStyleChanged;

signal lineWidthChanged¶

Emitted when the lineWidth property changes.

void QAccelPlot::LineCurve::lineWidthChanged;

signal stepModeChanged¶

Emitted when the stepMode property changes.

void QAccelPlot::LineCurve::stepModeChanged;

signal transitionChanged¶

Emitted when the transition property changes.

void QAccelPlot::LineCurve::transitionChanged;

Public Functions Documentation¶

function LineCurve¶

Constructs a LineCurve with the given__parent .

explicit QAccelPlot::LineCurve::LineCurve (
    QQuickItem * parent=nullptr
)

function antialiasingFeather¶

Returns the antialiasing feather width in pixels.

qreal QAccelPlot::LineCurve::antialiasingFeather () const

function appendData¶

Appends a single data point ( x _,_y ) to the curve. Triggers a redraw.

Q_INVOKABLE void QAccelPlot::LineCurve::appendData (
    qreal x,
    qreal y
)

function clearData¶

Removes all data points from the curve.

virtual Q_INVOKABLE void QAccelPlot::LineCurve::clearData () override

Implements QAccelPlot::PlotSeries::clearData

function color¶

Returns the base line color.

QColor QAccelPlot::LineCurve::color () const

function effects¶

Returns the QML list property for attached visual effects.

QQmlListProperty< LineCurveEffect > QAccelPlot::LineCurve::effects ()

function gaps¶

Returns the grouped gap-rendering settings. The object is owned by the curve.

LineCurveGaps * QAccelPlot::LineCurve::gaps () const

function hoverRadius¶

Returns the hover pick distance from the line in pixels.

qreal QAccelPlot::LineCurve::hoverRadius () const

function legendEntry¶

Returns the legend entry: the symbol, color, line, and marker of the curve.

virtual std::optional< LegendEntry > QAccelPlot::LineCurve::legendEntry () override const

Implements QAccelPlot::PlotSeries::legendEntry

function lineStyle¶

Returns the active line style.

LineStyle * QAccelPlot::LineCurve::lineStyle () const

function lineWidth¶

Returns the line stroke width.

qreal QAccelPlot::LineCurve::lineWidth () const

function marker¶

Returns the grouped marker settings. The object is owned by the curve.

SeriesMarker * QAccelPlot::LineCurve::marker () const

function postData¶

Queues a moved double buffer for assignment on the series' thread.

void QAccelPlot::LineCurve::postData (
    std::vector< double > && data,
    int count
)

function postData¶

Queues a moved float buffer for assignment on the series' thread.

void QAccelPlot::LineCurve::postData (
    std::vector< float > && data,
    int count
)

function setAntialiasingFeather¶

Sets the antialiasing feather width to feather pixels, clamped to [0, 10].

void QAccelPlot::LineCurve::setAntialiasingFeather (
    qreal feather
)

function setColor¶

Sets the line color to c .

void QAccelPlot::LineCurve::setColor (
    const QColor & c
)

function setData¶

Replaces the curve data with data (a list of QPointF values).

Q_INVOKABLE void QAccelPlot::LineCurve::setData (
    const QList< QPointF > & data
)

function setData¶

Sets data from separate X and Y vectors. If sizes don't match, the shorter length is used.

void QAccelPlot::LineCurve::setData (
    const std::vector< double > & xs,
    const std::vector< double > & ys
)

function setData¶

Replaces the series data with count data points copied from an interleaved double array.

void QAccelPlot::LineCurve::setData (
    const double * data,
    int count
)

See the class description for the data point layout of each series.

function setData¶

Replaces the series data by moving an interleaved double buffer.

void QAccelPlot::LineCurve::setData (
    std::vector< double > && data,
    int count
)

function setData¶

Like setData _(_data _,_count ), with the data extents given as__bounds instead of scanned for.

void QAccelPlot::LineCurve::setData (
    const double * data,
    int count,
    const DataBounds & bounds
)

function setData¶

Like setData _(_data _,_count ), with the data extents given as__bounds instead of scanned for.

void QAccelPlot::LineCurve::setData (
    std::vector< double > && data,
    int count,
    const DataBounds & bounds
)

function setDataF¶

Replaces the series data with count data points copied from an interleaved float array.

void QAccelPlot::LineCurve::setDataF (
    const float * data,
    int count
)

function setDataF¶

Replaces the series data by moving an interleaved float buffer.

void QAccelPlot::LineCurve::setDataF (
    std::vector< float > && data,
    int count
)

function setDataF¶

Like setDataF _(_data _,_count ), with the data extents given as__bounds instead of scanned for.

void QAccelPlot::LineCurve::setDataF (
    const float * data,
    int count,
    const DataBounds & bounds
)

function setDataF¶

Like setDataF _(_data _,_count ), with the data extents given as__bounds instead of scanned for.

void QAccelPlot::LineCurve::setDataF (
    std::vector< float > && data,
    int count,
    const DataBounds & bounds
)

function setHoverRadius¶

Sets the hover pick distance from the line to radius pixels. Negative values are clamped to 0. Marker hit testing is unaffected.

void QAccelPlot::LineCurve::setHoverRadius (
    qreal radius
)

function setLineStyle¶

Sets the line style to style .

void QAccelPlot::LineCurve::setLineStyle (
    LineStyle * style
)

function setLineWidth¶

Sets the line stroke width to w pixels.

void QAccelPlot::LineCurve::setLineWidth (
    qreal w
)

function setStepMode¶

Sets how the line joins consecutive data points to mode .

void QAccelPlot::LineCurve::setStepMode (
    StepMode mode
)

function setTransition¶

Sets the data transition to transition .

void QAccelPlot::LineCurve::setTransition (
    DataTransition * transition
)

function stepMode¶

Returns how the line joins consecutive data points.

StepMode QAccelPlot::LineCurve::stepMode () const

function transition¶

Returns the active data transition, or nullptr if none.

DataTransition * QAccelPlot::LineCurve::transition () const

function ~LineCurve¶

Destroys the curve, ending its animation on the assigned transition.

QAccelPlot::LineCurve::~LineCurve () override

Protected Functions Documentation¶

function applyDataPoints¶

Applies new points, animating to them when a transition is enabled.

virtual void QAccelPlot::LineCurve::applyDataPoints (
    DataPointInput && input
) override

Implements QAccelPlot::PlotSeries::applyDataPoints

function contains¶

Returns true if__point lies within the curve's hit-test region.

bool QAccelPlot::LineCurve::contains (
    const QPointF & point
) override const

function onAxisScaleChanged¶

Refreshes cached geometry when a bound axis changes between linear and log scale.

virtual void QAccelPlot::LineCurve::onAxisScaleChanged () override

Implements QAccelPlot::PlotSeries::onAxisScaleChanged

function onDataPointsChanged¶

Refreshes the vertex cache and the hit-test chunks after the points changed.

virtual void QAccelPlot::LineCurve::onDataPointsChanged (
    DataChange change,
    int previousCount
) override

Implements QAccelPlot::PlotSeries::onDataPointsChanged

The documentation for this class was generated from the following file QAccelPlot/src/QAccelPlot/series/LineCurve.hpp