uk.ac.starlink.ttools.plot

Class PlotDataPointIterator

java.lang.Object

uk.ac.starlink.ttools.plot.PointIterator

uk.ac.starlink.ttools.plot.PlotDataPointIterator

public class PlotDataPointIterator
extends PointIterator

PointIterator implementation based on a PlotData object.

Since:

9 Apr 2008

Author:

Mark Taylor

Field Summary

Fields inherited from class uk.ac.starlink.ttools.plot.PointIterator

EMPTY

Constructor Summary

Constructors

Constructor and Description
PlotDataPointIterator(PlotData data, PointPlacer placer) Constructor.

Method Summary

Modifier and Type	Method and Description
protected int[]	nextPoint() Returns a triple giving point index, screen X coordinate and screen Y coordinate.

Methods inherited from class uk.ac.starlink.ttools.plot.PointIterator

getAllPoints, getClosestPoint, getContainedPoints, getIndex, getX, getY, readNextPoint

Methods inherited from class java.lang.Object

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

Constructor Detail

PlotDataPointIterator

public PlotDataPointIterator(PlotData data,
                             PointPlacer placer)

Constructor.

Parameters:

data - object supplying point data

Method Detail

nextPoint

protected int[] nextPoint()

Description copied from class: PointIterator

Returns a triple giving point index, screen X coordinate and screen Y coordinate. Returns null if there are no more points. It is permissible to return the same int[] array with different contents each time. Invoked by PointIterator.readNextPoint().

Specified by:

nextPoint in class PointIterator

Returns:

ip, xp, yp triple