info.monitorenter.gui.chart.pointpainters
Class PointPainterDisc

java.lang.Object
  info.monitorenter.gui.chart.pointpainters.PointPainterDisc

All Implemented Interfaces:

IPointPainter, Serializable

public class PointPainterDisc
extends Object
implements IPointPainter

Renders points in form of a disc with configurable diameter.

Version:

$Revision: 1.7 $

Author:

Achim Westermann

See Also:

Serialized Form

Constructor Summary

PointPainterDisc()
Creates an instance with a default disc size of 4.

PointPainterDisc(int diameter)
Creates an instance with the given disc diameter.

Method Summary

int	getDiscSize() Returns the diameter of the discs to paint in pixel.
void	paintPoint(int absoluteX, int absoluteY, int nextX, int nextY, Graphics2D g, TracePoint2D original) Paint the point given by absolute coordinates on the given graphic context.
void	setDiscSize(int discSize) Sets the diameter of the discs to paint in pixel.

Methods inherited from class java.lang.Object

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

Constructor Detail

PointPainterDisc

public PointPainterDisc()

Creates an instance with a default disc size of 4.

PointPainterDisc

public PointPainterDisc(int diameter)

Creates an instance with the given disc diameter.

Parameters:

diameter - the disc size in pixel to use.

Method Detail

getDiscSize

public int getDiscSize()

Returns the diameter of the discs to paint in pixel.

Returns:

the diameter of the discs to paint in pixel.

setDiscSize

public void setDiscSize(int discSize)

Sets the diameter of the discs to paint in pixel.

Parameters:

discSize - the diameter of the discs to paint in pixel.

paintPoint

public void paintPoint(int absoluteX,
                       int absoluteY,
                       int nextX,
                       int nextY,
                       Graphics2D g,
                       TracePoint2D original)

Description copied from interface: IPointPainter

Paint the point given by absolute coordinates on the given graphic context.

The next coordinates are also provided to allow to check how much distance is available for the graphic representation of the current point.

Note that by contract the TracePoint2D argument is only guaranteed to be non-null in case the instance is used as a painter for ITracePainter subtypes. If you plan to use your implementation also for a subcomponent of an IErrorBarPainter (e.g. IErrorBarPainter.setConnectionPainter(IPointPainter)) then you have to implement "null - safe" for that argument.

Specified by:

paintPoint in interface IPointPainter

Parameters:

absoluteX - the ready to use x value for the point to paint.

absoluteY - the ready to use y value for the point to paint.

nextX - the ready to use next x value for the point to paint.

nextY - the ready to use next y value for the point to paint.

g - the graphic context to paint on.

original - just for information, for painting this should be irrelevant and it should not be changed too!

See Also:

IPointPainter.paintPoint(int, int, int, int, java.awt.Graphics2D, info.monitorenter.gui.chart.TracePoint2D)