Class for 3D bar displayers. More...

#include <ilviews/charts/bar.h>

Inheritance diagram for Ilv3dBarChartDisplayer:

Public Member Functions
	Ilv3dBarChartDisplayer (IlvDim width=IlvChartDisplayerWidth, IlvDim depth=IlvChartDisplayerDepth, IlvPalette *palette=0)
	Constructor. More...

virtual	~Ilv3dBarChartDisplayer ()
	Destructor. More...

void	drawTopFace (IlBoolean b)
	Specifies whether the top face of the 3D bars is drawn. More...

virtual void	getClipArea (IlvRect &area, const IlvTransformer *t) const
	Returns the clipping region that is used for the drawing. More...

IlvDim	getDepth () const
	Returns the depth of the 3D bars used to represent the data. More...

virtual IlvDim	getWidth () const
	Returns the width of the 3D bars used to represent the data. More...

IlBoolean	isDrawingTopFace () const
	Indicates whether the top face of the 3D bars is drawn. More...

void	setDepth (IlvDim depth)
	Sets the depth of the 3D bars used to represent the data. More...

virtual void	setMode (IlvDrawMode mode)
	Sets the drawing mode. More...

virtual void	setOverwrite (IlBoolean o)
	Sets the overwrite mode. More...

virtual void	setPalette (IlvPalette *palette, IlUInt index=0)
	Sets the palette used by the current displayer. More...

virtual void	setWidth (IlvDim width)
	Sets the width of the3D bars used to represent the data. More...

Public Member Functions inherited from IlvBarChartDisplayer
	IlvBarChartDisplayer (IlvDim width=IlvChartDisplayerWidth, IlvPalette *palette=0)
	Constructor. More...

IlvDim	getSize () const
	Returns the size of the bars used to represent the data. More...

virtual IlvDim	getSizeAlongBase () const
	Returns the size along the base for the graphical representation of a given data point. More...

IlUInt	getStrokeThreshold () const
	Returns the minimum width of a bar, below which the stroke of a rendering style is not used. More...

IlUInt	getWidthPercent () const
	Returns the width percentage of the bars used to represent the data. More...

virtual IlBoolean	isFilled () const
	Indicates whether the graphical representation is filled. More...

void	setStrokeThreshold (IlUInt threshold)
	Specifies the minimum width of a bar, below which the stroke of a rendering style is not used. More...

void	setWidthPercent (IlUInt width)
	Sets the width percentage of the space between two bars. More...

Public Member Functions inherited from IlvSingleChartDisplayer
virtual	~IlvSingleChartDisplayer ()
	Destructor. More...

virtual IlvChartDisplayerPoints *	allocDisplayerPoints () const
	Allocates and returns an `IlvChartDisplayerPoints` object. More...

virtual IlBoolean	boundingBox (IlvRect &bbox, const IlvTransformer *t=0) const
	Returns the bounding box of the graphical representation of data. More...

virtual IlBoolean	dataPointBBox (IlUInt dataPtIdx, IlvRect &bbox, IlBoolean takeInfoIntoAccount=IlTrue, const IlvTransformer *t=0) const
	Returns the bounding box of the graphical representation of the data points at a given index. More...

virtual void	draw (IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws the graphical representation of data. More...

virtual void	drawDataPoint (IlUInt dataPtIdx, IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws the graphical representation of the data point(s) at a given index. More...

virtual void	drawDataPoints (IlUInt iMin, IlUInt iMax, IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws the graphical representation of the data points between a given interval. More...

virtual void	drawFill (IlBoolean b)
	Sets the filling mode of the displayer. More...

virtual void	drawLegendItem (IlvPort dst, const IlvRect &legendArea, IlvPalette itemPal, const IlvRegion *clip, IlAny clientData=0) const
	Draws the graphic part of a legend item associated with the current displayer. More...

virtual IlvColor *	getBackground (IlUInt index=0) const
	Returns the background color of a palette used by the current displayer to display data. More...

void	getDataDisplayArea (IlvRect &dataDisplayArea, const IlvTransformer *t=0) const
	Returns the bounds of the data display area. More...

IlvChartDisplayerPointsFactory *	getDisplayerPointsFactory () const
	Returns the factory used to create `IlvChartDisplayerPoints` instances. More...

virtual IlUInt	getDisplayersCount () const
	Returns the number of displayers. More...

virtual IlUInt	getDisplayItem (IlvChartDataSet &dataSet, const IlvPoint &viewPoint, const IlvTransformer t) const
	Returns the item to which a view point corresponds. More...

virtual IlBoolean	getDisplayPoint (const IlvChartDataSet dataSet, IlUInt dataPtIdx, IlvPoint &point, const IlvTransformer t=0) const
	Returns the corresponding screen point for a data point. More...

virtual IlvColor *	getForeground (IlUInt index=0) const
	Returns the foreground color of a palette used by the current displayer to display data. More...

virtual const char *	getInternalLegendText (IlUInt index=0) const
	Returns the legend text stored in the current displayer. More...

virtual const char *	getLegendText (IlUInt index=0) const
	Returns the text that will be used in a legend for the current displayer. More...

virtual IlUInt	getNearestPoint (IlvChartDataSet &dataSet, const IlvPoint &viewPoint, IlvDim distance, IlvPoint &point, const IlvTransformer t=0) const
	Returns the nearest data point. More...

virtual IlvPalette *	getPalette (IlUInt=0) const
	Returns a palette used by the current displayer to display data. More...

virtual IlvPointInfoCollection *	getPointInfoCollection (const IlvChartDataSet *dataSet) const
	Returns the point information collection defined to be used to display a given data set. More...

IlvPos	getShiftOffset () const
	Returns the offset by which the graphical representation of data is shifted along the base of the chart. More...

IlBoolean	isDrawingFill () const
	Returns the filling mode for the current displayer. More...

virtual void	releaseDisplayerPoints (IlvChartDisplayerPoints *dispPts) const
	Releases an `IlvChartDisplayerPoints` object used by the current displayer. More...

virtual void	setBackground (IlvColor *color, IlUInt index=0)
	Sets the background color of a palette used by the current displayer to display data. More...

virtual IlBoolean	setDataPoint (IlvChartDataSet dataSet, IlUInt dataPtIdx, const IlvPoint &point, const IlvTransformer t=0) const
	Sets the corresponding data point from a screen point. More...

IlvChartDisplayerPointsFactory *	setDisplayerPointsFactory (IlvChartDisplayerPointsFactory *factory)
	Sets the factory used to create `IlvChartDisplayerPoints` instances. More...

virtual void	setForeground (IlvColor *color, IlUInt index=0)
	Sets the foreground color of a palette used by the current displayer to display data. More...

virtual void	setLegendItems (IlvChartLegend *legend) const
	Sets the legend items associated with the current displayer. More...

virtual void	setLegendText (const char *text, IlUInt index=0)
	Sets the text that will be used in a legend for the current displayer. More...

virtual void	setPointInfoCollection (const IlvChartDataSet dataSet, IlvPointInfoCollection ptInfoCollection)
	Sets the point information collection that will be used to display a given data set. More...

void	setShiftOffset (IlvPos offset)
	Sets the offset by which the graphical representation of data is shifted along the base of the chart. More...

virtual void	treatPointsOutOfAbscissaLimits (const IlvRect &dataDisplayArea, IlvChartDisplayerPoints *displayerPoints, const IlvCoordInterval &abscissaRange, const IlvPoint &minLimit, const IlvPoint &maxLimit) const
	Treats the occurrence of points in screen coordinates that are outside the abscissa limits. More...

virtual IlBoolean	usePointInfo () const
	Indicates whether point information collections are defined. More...

virtual void	write (IlvOutputFile &file) const
	Writes the attributes of the current object in a file. More...

Public Member Functions inherited from IlvAbstractChartDisplayer
virtual	~IlvAbstractChartDisplayer ()
	Destructor. More...

void	addDataSet (IlvChartDataSet *dataSet)
	Adds a real data set to be displayed by the current displayer. More...

virtual IlBoolean	canBeProjectedIfOutOfBounds () const
	Indicates whether the graphical representation can be projected when it is out-of-bounds. More...

virtual IlvAbstractChartDisplayer *	copy () const =0
	Virtual copy constructor. More...

IlBoolean	dataPointToDisplay (const IlvDoublePoint &dataPoint, IlvPoint &point, const IlvTransformer *t=0) const
	Projects a data point into screen coordinates. More...

virtual IlBoolean	displayDataSet (const IlvChartDataSet *dataSet) const
	Indicates whether the current displayer displays a data set. More...

IlBoolean	displayToDataPoint (const IlvPoint &point, IlvDoublePoint &dataPoint, const IlvTransformer *t=0) const
	Inversely projects a screen point to retrieve the corresponding data point. More...

IlvChartGraphic *	getChartGraphic () const
	Returns the chart graphic which uses the current displayer. More...

IlvChartDataSet *	getDataSet (IlUInt index=0) const
	Returns a data set used by the current displayer. More...

IlUInt	getDataSetsCount () const
	Returns the number of data sets used by the current displayer. More...

IlUInt	getMaxDataSetsCount () const
	Returns the maximum number of real data sets that the current displayer is allowed to display. More...

const char *	getName () const
	Returns the name of the current displayer. More...

IlvCoordinateInfo *	getOrdinateInfo () const
	Deprecated Returns the coordinate information associated with the ordinate scale considered to display data. More...

const IlvCompositeChartDisplayer *	getParentDisplayer () const
	Returns the parent displayer. More...

virtual IlvChartDataPointInfo *	getPointInfo (IlUInt dataPtIdx, const IlvChartDataSet *dataSet=0) const
	Returns the point information associated with a given data point. More...

virtual IlvPalette *	getProjectedPointsPalette () const
	Returns the palette used to display out-of-bounds values. More...

IlvChartDataSet *	getRealDataSet (IlUInt index=0) const
	Returns a real data set to be displayed by the current displayer. More...

IlUInt	getRealDataSetsCount () const
	Returns the number of real data sets. More...

virtual IlvCombinedChartDataSet *	getVirtualDataSet (const IlvChartDataSet *dataSet, IlUInt &index) const
	Returns a virtual data set used by the current displayer. More...

virtual IlBoolean	graphicalRepresentationByDataPoint () const
	Indicates whether there is a graphical representation by data point. More...

virtual void	insertDataSet (IlvChartDataSet *dataSet, IlUInt index=IlvLastPositionIndex)
	Inserts a real data set to be displayed by the current displayer. More...

virtual IlBoolean	isContinuous () const
	Indicates whether the graphical representation is continuous. More...

virtual IlBoolean	isViewable () const
	Indicates whether the graphical representation can be viewed. More...

IlBoolean	isVisible () const
	Indicates whether the graphical representation is visible. More...

virtual void	removeDataSet (IlvChartDataSet *dataSet)
	Removes a real data set from the data sets to be displayed by the current displayer. More...

virtual void	removeDataSets ()
	Removes all the real data sets to be displayed by the current displayer.

void	removePointInfoCollection (const IlvChartDataSet *dataSet)
	Removes the point information collection defined to be used to display a given data set. More...

virtual IlBoolean	replaceDataSet (IlvChartDataSet oldDataSet, IlvChartDataSet newDataSet)
	Replaces a real data set with another one. More...

IlvOutputFile &	save (IlvOutputFile &file) const
	Writes a complete description of the current object in a file. More...

virtual void	setChartGraphic (IlvChartGraphic *chart)
	Sets the chart graphic which uses the current displayer. More...

virtual void	setDataSet (IlvChartDataSet *dataSet, IlUInt index=0)
	Sets a real data set to be displayed by the current displayer. More...

void	setDataSet (IlvChartDataSet dataSet, IlvPalette palette, IlUInt index=0)
	Sets a real data set to be displayed by the current displayer. More...

virtual void	setDataSets (IlUInt count, IlvChartDataSet const dataSets)
	Sets the real data sets to be displayed by the current displayer. More...

void	setName (const char *name)
	Sets the name of the current displayer. More...

virtual void	setOrdinateInfo (IlvCoordinateInfo *ordinateInfo)
	Sets the coordinate information associated with the ordinate scale considered to display data. More...

void	setParentDisplayer (const IlvCompositeChartDisplayer *displayer)
	Sets the parent displayer. More...

void	setVirtualDataSet (IlvCombinedChartDataSet *vDataSet, IlUInt index=0)
	Sets a virtual data set used by the current displayer. More...

void	setVisible (IlBoolean visible)
	Specifies whether the graphical representation is visible. More...

virtual IlBoolean	useVirtualDataSets () const
	Indicates whether the current displayer uses virtual data sets. More...

Protected Member Functions
virtual void	boundingBoxOfPoints (IlvChartDisplayerPoints dspPts, IlvRect &bbox, IlBoolean takeInfoIntoAccount, const IlvTransformer t=0) const
	Computes the bounding box of the graphical representation from points in screen coordinates corresponding to the data points to display. More...

virtual void	computeItem (const IlvChartDisplayerPoints dspPts, IlUInt pointIndex, IlUInt &usedPointsCount, IlvPoint points, const IlvTransformer *t=0) const
	Computes the item that will be displayed for a given point in screen coordinates corresponding to a data point to display. More...

virtual void	computePalettes ()
	Computes the shadow palettes used to display the top and side faces of the 3D bars. More...

virtual void	computeTopBottomShadows (IlvPalette currentPalette, IlvPalette &topShadow, IlvPalette *&bottomShadow) const
	Computes the shadow palettes from a given palette. More...

virtual void	drawItem (const IlvChartDisplayerPoints dspPts, IlUInt pointIndex, IlUInt pointCount, IlvPoint points, IlvPalette itemPalette, IlvPort dst, const IlvTransformer t=0, const IlvRegion clip=0) const
	Draws the item for a given point in screen coordinates corresponding to a data point to display. More...

virtual void	drawPoints (IlvChartDisplayerPoints dspPts, IlvPort dst, const IlvTransformer t=0, const IlvRegion clip=0) const
	Draws the graphical representation from points in screen coordinates corresponding to the data points to display. More...

virtual IlUInt	getItemPointsCount (const IlvChartDisplayerPoints *dspPts) const
	Returns the maximum number of points needed to define an item for the current displayer. More...

Protected Member Functions inherited from IlvSingleChartDisplayer
	IlvSingleChartDisplayer (IlvPalette *palette=0)
	Constructor. More...

	IlvSingleChartDisplayer (IlvInputFile &file)
	Constructor. More...

	IlvSingleChartDisplayer (const IlvSingleChartDisplayer &displayer)
	Constructor. More...

virtual void	boundingBoxOfItem (const IlvChartDisplayerPoints displayerPoints, IlUInt pointIndex, IlUInt pointsCount, IlvPoint points, IlvRect &bbox, IlBoolean takeInfoIntoAccount=IlTrue, const IlvTransformer *t=0) const
	Returns the bounding box of the item drawn for a given point in screen coordinates corresponding to a data point to display. More...

IlBoolean	boundingBoxOfPart (const IlvCoordInterval &abscissaRange, IlBoolean shiftOfCycleLength, IlvRect &partBBox, IlBoolean takeInfoIntoAccount, const IlvTransformer *t=0) const
	Returns the bounding box of a part of the graphical representation of data. More...

virtual IlBoolean	computeLimitsForDataSelection (const IlvRect &clipRect, const IlvCoordInterval &abscissaRange, const IlvCoordInterval &ordinateRange, IlvCoordInterval &abscissaSelectionRange, IlvCoordInterval &ordinateSelectionRange, IlBoolean &dataToSelect, const IlvTransformer *t=0) const
	Computes the abscissa and ordinate intervals used to select the data to be displayed in a given rectangle. More...

void	drawPart (const IlvCoordInterval &abscissaRange, IlBoolean shiftOfCycleLength, IlvPort dst, const IlvTransformer t=0, const IlvRegion *clip=0) const
	Draws a part of the graphical representation of data. More...

virtual void	drawPointInfos (const IlvChartDisplayerPoints displayerPoints, IlvPort dst, const IlvTransformer t=0, const IlvRegion clip=0, const IlvChartDataSet *dataSet=0) const
	Draws the point information defined for the data points to be displayed. More...

IlUInt	getNearestPointInsidePart (const IlvCoordInterval &abscissaRange, IlBoolean shiftOfCycleLength, IlvChartDataSet &dataSet, const IlvPoint &viewPoint, IlvDim distance, IlvPoint &point, const IlvTransformer t=0) const
	Returns the nearest data point within a given abscissa range. More...

virtual IlUInt	pointsContains (const IlvPoint &viewPoint, IlvChartDisplayerPoints , const IlvTransformer t=0) const
	Returns the index of the data point of which the corresponding displayer item holds viewPoint.

virtual IlvDoublePoint *	selectDataPointsForPoint (IlUInt dataPtIdx, IlUInt &count, IlUInt *&dataPtIdxes) const
	Selects and returns the data points needed to be able to display the graphical representation of the data point(s) at a given index in the real data set(s) to be displayed by the current displayer. More...

virtual IlvDoublePoint *	selectDataPointsForRange (const IlvCoordInterval &abscissaRange, IlUInt &pointCount, IlUInt &dataPtIdxes, const IlvTransformer t=0, const IlvRect *clip=0) const
	Selects And returns the data points to display that are within a given abscissa interval. More...

virtual IlvDoublePoint *	selectDataPointsInRect (IlUInt &pointCount, IlUInt &dataPtIndexes, IlvRect pickRect, const IlvTransformer t=0) const
	Selects the data points that are rendered within a rectangle. More...

Protected Member Functions inherited from IlvAbstractChartDisplayer
	IlvAbstractChartDisplayer ()
	Constructor. More...

	IlvAbstractChartDisplayer (const IlvAbstractChartDisplayer &displayer)
	Constructor. More...

	IlvAbstractChartDisplayer (IlvInputFile &file)
	Constructor. More...

virtual void	dataSetAdded (IlUInt position=IlvLastPositionIndex)
	Performs the updates needed when a real data set is added. More...

virtual void	dataSetRemoved (IlUInt index)
	Performs the updates needed when a real data set is removed. More...

virtual void	update ()
	Performs the updates needed when modifications (removing, adding, replacing) are made to the real data sets.

virtual void	updateVirtualDataSets ()
	Updates the virtual data sets. More...

Additional Inherited Members
Static Public Member Functions inherited from IlvAbstractChartDisplayer
static IlvAbstractChartDisplayer *	Load (IlvInputFile &file)
	Reads a displayer object from a file. More...

Detailed Description

Class for 3D bar displayers.

Library: ilvcharts

This class is a subclass of IlvBarChartDisplayer which allows you to represent data with 3D bars.

The 3D bar displayer displays a unique data set. This displayer can be used with any type of projection (see the IlvAbstractProjector class for more details).

The images below show data sets represented with 3D bar displayers in a Cartesian chart (on the left) and a polar chart (on the right).

See also: IlvBarChartDisplayer.

Constructor & Destructor Documentation

§ Ilv3dBarChartDisplayer()

Ilv3dBarChartDisplayer::Ilv3dBarChartDisplayer	(	IlvDim	width = `IlvChartDisplayerWidth`,
		IlvDim	depth = `IlvChartDisplayerDepth`,
		IlvPalette *	palette = `0`
	)

Constructor.

Initializes a new Ilv3dBarChartDisplayer object. The Boolean indicating whether the top face is drawn is set to IlTrue by default.

Parameters

width	The width of the 3D bars that will be used to represent the data.
depth	The depth of the 3D bars that will be used to represent the data.
palette	The palette that will be used to display the 3D bars.

§ ~Ilv3dBarChartDisplayer()

virtual Ilv3dBarChartDisplayer::~Ilv3dBarChartDisplayer ( )

virtual

Destructor.

The destructor unlocks the shadow palettes computed from the palette set on the current displayer. The shadow palettes are used to display the top and side faces, whereas the front face is displayed with the palette set on the current displayer.

Member Function Documentation

§ boundingBoxOfPoints()

virtual void Ilv3dBarChartDisplayer::boundingBoxOfPoints	(	IlvChartDisplayerPoints *	dspPts,
		IlvRect &	bbox,
		IlBoolean	takeInfoIntoAccount,
		const IlvTransformer *	t = `0`
	)		const

protectedvirtual

Computes the bounding box of the graphical representation from points in screen coordinates corresponding to the data points to display.

See the IlvSingleChartDisplayer::boundingBoxOfPoints method for more details.

This method just calls the IlvBarChartDisplayer::boundingBoxOfPoints method and expands the computed bounding box by the difference between the depth and the size of the bars if the depth is greater than the size.

Reimplemented from IlvBarChartDisplayer.

§ computeItem()

virtual void Ilv3dBarChartDisplayer::computeItem	(	const IlvChartDisplayerPoints *	dspPts,
		IlUInt	pointIndex,
		IlUInt &	usedPointsCount,
		IlvPoint *	points,
		const IlvTransformer *	t = `0`
	)		const

protectedvirtual

Computes the item that will be displayed for a given point in screen coordinates corresponding to a data point to display.

Computes the points defining the item that will be displayed for the point in screen coordinates that is stored at the index pointIndex in the dspPts object. This object stores the points in screen coordinates corresponding to the data points that have to be displayed by the current displayer. (See the IlvSingleChartDisplayer::computeItem method for more details).

The item that will be displayed for a given screen point corresponding to a data point is a 3D bar. This 3D bar is defined by twelve points corresponding to the corners of the three faces of the 3D bar. The following figure shows these points. The indexes at which the points are stored in the array points that is used to return the points defining the item are displayed next to the points.

The number of computed points defining the item (that is, 12) is returned in usedPointsCount.

Reimplemented from IlvBarChartDisplayer.

§ computePalettes()

virtual void Ilv3dBarChartDisplayer::computePalettes ( )

protectedvirtual

Computes the shadow palettes used to display the top and side faces of the 3D bars.

Computes the shadow palettes used to display the top and side faces of the 3D bars from the palette set on the current displayer. (The palette set on the current displayer is used to display the front face).

§ computeTopBottomShadows()

virtual void Ilv3dBarChartDisplayer::computeTopBottomShadows	(	IlvPalette *	currentPalette,
		IlvPalette *&	topShadow,
		IlvPalette *&	bottomShadow
	)		const

protectedvirtual

Computes the shadow palettes from a given palette.

Parameters

currentPalette	The palette from which the shadow palettes are computed.
topShadow	The computed shadow palette that will be used to display the top face of the 3D bars.
bottomShadow	The computed shadow palette that will be used to display the side face of the 3D bars.

Note: This method is used internally and should not be used directly by the user. It is called in the Ilv3dBarChartDisplayer::computePalettes() method in order to compute the shadow palettes that will be used to display the top and the side faces of the 3D bars.

§ drawItem()

virtual void Ilv3dBarChartDisplayer::drawItem	(	const IlvChartDisplayerPoints *	dspPts,
		IlUInt	pointIndex,
		IlUInt	pointCount,
		IlvPoint *	points,
		IlvPalette *	itemPalette,
		IlvPort *	dst,
		const IlvTransformer *	t = `0`,
		const IlvRegion *	clip = `0`
	)		const

protectedvirtual

Draws the item for a given point in screen coordinates corresponding to a data point to display.

Draws the item for the point in screen coordinates that is stored at the index pointIndex in the dspPts object. This object stores the points in screen coordinates corresponding to the data points that have to be displayed by the current displayer. (See the IlvSingleChartDisplayer::drawItem method for more details.)

This method draws the 3D bar defined by the points stored in points. (See the Ilv3dBarChartDisplayer::computeItem method for more details.) A polyline is drawn around each face of the 3D bar with the foreground color of the palette itemPalette. The front face is filled with the background color of the palette if the method IlvSingleChartDisplayer::isDrawingFill returns IlTrue. The top and side faces are filled with the shadow colors computed from the background color if the method IlvSingleChartDisplayer::isDrawingFill returns IlTrue.

Reimplemented from IlvBarChartDisplayer.

§ drawPoints()

virtual void Ilv3dBarChartDisplayer::drawPoints	(	IlvChartDisplayerPoints *	displayerPoints,
		IlvPort *	dst,
		const IlvTransformer *	t = `0`,
		const IlvRegion *	clip = `0`
	)		const

protectedvirtual

Draws the graphical representation from points in screen coordinates corresponding to the data points to display.

The drawing is performed in the given port dst using the transformer t and the clipping region clip.

The default implementation of this method uses the IlvSingleChartDisplayer::getClipArea() method to obtain the clipping region to be used for the drawing. Then, for each point in screen coordinates stored in displayerPoints, it uses:

the IlvSingleChartDisplayer::computeItem() method to compute the item that will be displayed for this screen point.
the IlvSingleChartDisplayer::drawItem() method to draw the item for this screen point.

At the end, it uses the IlvSingleChartDisplayer::drawPointInfos() method to draw the point information (if any).

Parameters

displayerPoints	The object that stores the points in screen coordinates that have to be displayed by the current displayer. These points are considered to be already transformed by t.
dst	The port used for the drawing.
t	The optional transformer.
clip	The optional clipping region.

Reimplemented from IlvSingleChartDisplayer.

§ drawTopFace()

void Ilv3dBarChartDisplayer::drawTopFace ( IlBoolean b )

Specifies whether the top face of the 3D bars is drawn.

Parameters

b	The new value of the Boolean indicating whether the top face of the 3D bars is drawn.

Note: This method is used internally and should not be used directly by the user. By default, the Boolean is set to IlTrue. This Boolean is used by the stacked 3D bar displayers to draw the top faces of the 3D bars only for the 3D bars at the top of the stack. In this case, the Boolean value is automatically set in the IlvStacked3dBarChartDisplayer::updateDisplayers method and so does not need to be set by hand.

§ getClipArea()

virtual void Ilv3dBarChartDisplayer::getClipArea	(	IlvRect &	area,
		const IlvTransformer *	t
	)		const

virtual

Returns the clipping region that is used for the drawing.

This method returns in area the clipping region that is used to clip the graphical representation of data drawn by the current object. If a transformer t is specified, the returned clipping region is transformed by t. The current implementation of the method returns in area the area obtained by the IlvSingleChartDisplayer::getClipArea method expanded perpendicularly to the base by the depth of a 3D bar and along the base by the maximum between the the size and the depth of a 3D bar. The term base of a chart refers to the abscissa scale of this chart.

Parameters

area	The returned clipping region that is used by the current object for the drawing.
t	The transformer that is applied to the returned clipping region.

Reimplemented from IlvBarChartDisplayer.

§ getDepth()

IlvDim Ilv3dBarChartDisplayer::getDepth ( ) const

Returns the depth of the 3D bars used to represent the data.

Returns: The depth of the 3D bars used to represent data. (See the figure above.)

§ getItemPointsCount()

virtual IlUInt Ilv3dBarChartDisplayer::getItemPointsCount ( const IlvChartDisplayerPoints * dspPts ) const

protectedvirtual

Returns the maximum number of points needed to define an item for the current displayer.

See the Ilv3dBarChartDisplayer::computeItem method for more details.

Parameters

dspPts The object that stores the points in screen coordinates that have to be displayed by the current displayer.

Returns: 12.

Reimplemented from IlvBarChartDisplayer.

§ getWidth()

virtual IlvDim Ilv3dBarChartDisplayer::getWidth ( ) const

virtual

Returns the width of the 3D bars used to represent the data.

Returns: The width of the 3D bars used to represent the data.

Reimplemented from IlvBarChartDisplayer.

§ isDrawingTopFace()

IlBoolean Ilv3dBarChartDisplayer::isDrawingTopFace ( ) const

Indicates whether the top face of the 3D bars is drawn.

Returns: IlTrue if the top face is drawn and IlFalse otherwise.

See also: Ilv3dBarChartDisplayer::drawTopFace.

§ setDepth()

void Ilv3dBarChartDisplayer::setDepth ( IlvDim depth )

Sets the depth of the 3D bars used to represent the data.

Parameters

depth The new depth of the 3D bars used to represent the data.

§ setMode()

virtual void Ilv3dBarChartDisplayer::setMode ( IlvDrawMode mode )

virtual

Sets the drawing mode.

Sets the drawing mode for the current object. The information is passed to all the palettes used by the current displayer to display data.

Parameters

mode	The new drawing mode for the current object.

Reimplemented from IlvSingleChartDisplayer.

§ setOverwrite()

virtual void Ilv3dBarChartDisplayer::setOverwrite ( IlBoolean o )

virtual

Sets the overwrite mode.

Modifies the way the drawing member functions of the current object operate when drawing on the root port. If the o parameter is set to IlFalse, the drawing operations are hidden by the windows stored on the top window. If the parameter is set to IlTrue, the drawing operations are performed on top of every window present on the screen, just as if the windows were part of the root window. The information is passed to all the palettes used by the current displayer to display data.

Parameters

o	The new value of the Boolean indicating the way the drawing member functions operate.

Reimplemented from IlvSingleChartDisplayer.

§ setPalette()

virtual void Ilv3dBarChartDisplayer::setPalette	(	IlvPalette *	palette,
		IlUInt	index = `0`
	)

virtual

Sets the palette used by the current displayer.

Sets the palette used by the current displayer to display data to palette and computes the shadow palettes from this palette. The shadow palettes are used to display the top and side faces, whereas the palette palette is used to display the front face.

Note: The index index is not used since the current displayer is a single displayer. (See the IlvAbstractChartDisplayer::setPalette() method for more details.)

Parameters

palette	The new palette used by the current displayer.
index	If the current displayer is a composite displayer, this parameter indicates the index of the displayer within the displayers composing the current displayer. Otherwise, this parameter can be omitted.

Reimplemented from IlvSingleChartDisplayer.

§ setWidth()

virtual void Ilv3dBarChartDisplayer::setWidth ( IlvDim width )

virtual

Sets the width of the3D bars used to represent the data.

Parameters

width The new width of the 3D bars used to represent the data.

Reimplemented from IlvBarChartDisplayer.

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

§ Ilv3dBarChartDisplayer()

§ ~Ilv3dBarChartDisplayer()

Member Function Documentation

§ boundingBoxOfPoints()

§ computeItem()

§ computePalettes()

§ computeTopBottomShadows()

§ drawItem()

§ drawPoints()

§ drawTopFace()

§ getClipArea()

§ getDepth()

§ getItemPointsCount()

§ getWidth()

§ isDrawingTopFace()

§ setDepth()

§ setMode()

§ setOverwrite()

§ setPalette()

§ setWidth()