org.opensourcephysics.cabrillo.tracker
Class OffsetOriginStep

java.lang.Object
  org.opensourcephysics.cabrillo.tracker.Step
      org.opensourcephysics.cabrillo.tracker.OffsetOriginStep

All Implemented Interfaces:

java.lang.Cloneable

public class OffsetOriginStep
extends Step

This is a Step for a OffsetOrigin. It is used for setting the origin of an ImageCoordSystem.

Author:

Douglas Brown

Nested Class Summary

class

OffsetOriginStep.Position A class to represent the position of the offset origin.

Field Summary

protected double	worldX
protected double	worldY

Fields inherited from class org.opensourcephysics.cabrillo.tracker.Step

dataVisible, defaultIndex, footprint, format, frc, hitRect, marks, n, points, screenPoints, selectionShape, track, transform, valid

Constructor Summary

OffsetOriginStep(OffsetOrigin track, int n, double x, double y)
Constructs a OffsetOriginStep with specified image coordinates.

Method Summary

java.lang.Object	clone() Clones this Step.
protected Mark	getMark(TrackerPanel trackerPanel) Overrides Step getMark method.
OffsetOriginStep.Position	getPosition() Gets the position.
void	setWorldXY(double x, double y) Sets the world coordinates.
java.lang.String	toString() Returns a String describing this step.

Methods inherited from class org.opensourcephysics.cabrillo.tracker.Step

draw, erase, erase, findInteractive, getBounds, getDefaultPoint, getFrameNumber, getLength, getPointIndex, getPoints, getTrack, remark, remark, repaint, repaint, setDefaultPointIndex, setFootprint, setHitRectCenter

Methods inherited from class java.lang.Object

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

Field Detail

worldX

protected double worldX

worldY

protected double worldY

Constructor Detail

OffsetOriginStep

public OffsetOriginStep(OffsetOrigin track,
                        int n,
                        double x,
                        double y)

Constructs a OffsetOriginStep with specified image coordinates.

Parameters:

track - the offset origin

n - the frame number

x - the image x coordinate

y - the image y coordinate

Method Detail

getPosition

public OffsetOriginStep.Position getPosition()

Gets the position.

Returns:

the position

setWorldXY

public void setWorldXY(double x,
                       double y)

Sets the world coordinates. This moves the origin so the image location does not change.

Parameters:

x - the world x coordinate

y - the world y coordinate

getMark

protected Mark getMark(TrackerPanel trackerPanel)

Overrides Step getMark method.

Overrides:

getMark in class Step

Parameters:

trackerPanel - the tracker panel

Returns:

the mark

clone

public java.lang.Object clone()

Clones this Step.

Overrides:

clone in class Step

Returns:

a clone of this step

toString

public java.lang.String toString()

Returns a String describing this step.

Overrides:

toString in class Step

Returns:

a descriptive string