ilog.views.chart

Class IlvDefaultChartDataPicker

java.lang.Object

ilog.views.chart.IlvDefaultChartDataPicker

All Implemented Interfaces:

IlvChartDataPicker

Direct Known Subclasses:

IlvChartDataInteractor.DataPicker

public class IlvDefaultChartDataPicker
extends Object
implements IlvChartDataPicker

A default data picker that uses an Euclidian distance between data points.

Since:

JViews 5.0

Constructor Summary

Constructors

Constructor and Description
IlvDefaultChartDataPicker(int pickX, int pickY, int pickDist) Creates a default data picker with the specified picking point and picking distance.

Method Summary

Modifier and Type	Method and Description
boolean	accept(IlvChartRenderer renderer) Tells whether the specified renderer must be considered, when searching among several renderers.
double	computeDistance(double x1, double y1, double x2, double y2) Returns the Euclidian distance between two points.
int	getPickDistance() Returns the picking distance.
int	getPickX() Returns the x-coordinate of the picking point.
int	getPickY() Returns the y-coordinate of the picking point.
boolean	useDataSpace() Tells whether the picker computes the distance in the data space.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IlvDefaultChartDataPicker

public IlvDefaultChartDataPicker(int pickX,
                                 int pickY,
                                 int pickDist)

Creates a default data picker with the specified picking point and picking distance.

Method Detail

getPickX

public int getPickX()

Returns the x-coordinate of the picking point. This coordinate is expressed in projected space.

Specified by:

getPickX in interface IlvChartDataPicker

getPickY

public int getPickY()

Returns the y-coordinate of the picking point. This coordinate is expressed in projected space.

Specified by:

getPickY in interface IlvChartDataPicker

getPickDistance

public int getPickDistance()

Returns the picking distance.

Specified by:

getPickDistance in interface IlvChartDataPicker

useDataSpace

public boolean useDataSpace()

Tells whether the picker computes the distance in the data space. Returns false, as this picker computes an Euclidian distance in projected space.

Specified by:

useDataSpace in interface IlvChartDataPicker

See Also:

IlvChartDataPicker.computeDistance(double, double, double, double)

accept

public boolean accept(IlvChartRenderer renderer)

Tells whether the specified renderer must be considered, when searching among several renderers. This method always returns true.

Specified by:

accept in interface IlvChartDataPicker

computeDistance

public double computeDistance(double x1,
                              double y1,
                              double x2,
                              double y2)

Returns the Euclidian distance between two points.

Specified by:

computeDistance in interface IlvChartDataPicker