org.opensourcephysics.cabrillo.tracker
Class ReferenceFrame

java.lang.Object
  org.opensourcephysics.media.core.ImageCoordSystem
      org.opensourcephysics.cabrillo.tracker.ReferenceFrame

All Implemented Interfaces:

java.beans.PropertyChangeListener, java.util.EventListener

public class ReferenceFrame
extends ImageCoordSystem
implements java.beans.PropertyChangeListener

A ReferenceFrame is an image coordinate system with its origin determined by the position of a PointMass.

Author:

Douglas Brown

Nested Class Summary

Nested classes/interfaces inherited from class org.opensourcephysics.media.core.ImageCoordSystem

ImageCoordSystem.Loader

Field Summary

Fields inherited from class org.opensourcephysics.media.core.ImageCoordSystem

decimal, firePropChange, sci, support

Constructor Summary

ReferenceFrame(ImageCoordSystem coords, PointMass originTrack)
Constructs a ReferenceFrame with a default initial length.

Method Summary

ImageCoordSystem	getCoords() Gets the parent image coordinate system.
PointMass	getOriginTrack() Gets the origin track of this reference frame.
boolean	isLocked() Overrides isLocked method.
void	propertyChange(java.beans.PropertyChangeEvent e) Responds to property change events.
void	setFixedOrigin(boolean fixed, int n) Overrides ImageCoordSystem setFixedOrigin method.
void	setLocked(boolean locked) Overrides setLocked method.
protected void	setOrigins() Sets the origins of the image coordinate system.

Methods inherited from class org.opensourcephysics.media.core.ImageCoordSystem

addPropertyChangeListener, addPropertyChangeListener, getAngle, getCosine, getDataString, getLength, getLoader, getOriginX, getOriginY, getScaleX, getScaleY, getSine, getToImageTransform, getToWorldTransform, imageToWorldX, imageToWorldXComponent, imageToWorldY, imageToWorldYComponent, isAdjusting, isFixedAngle, isFixedOrigin, isFixedScale, removePropertyChangeListener, removePropertyChangeListener, setAdjusting, setAllAngles, setAllCosineSines, setAllOriginsXY, setAllScalesX, setAllScalesXY, setAllScalesY, setAllValuesToFrame, setAngle, setCosineSine, setCosineSines, setFixedAngle, setFixedAngle, setFixedOrigin, setFixedScale, setFixedScale, setLength, setOriginsXY, setOriginXY, setScalesX, setScalesXY, setScalesY, setScaleX, setScaleXY, setScaleY, worldToImageX, worldToImageXComponent, worldToImageY, worldToImageYComponent

Methods inherited from class java.lang.Object

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

Constructor Detail

ReferenceFrame

public ReferenceFrame(ImageCoordSystem coords,
                      PointMass originTrack)

Constructs a ReferenceFrame with a default initial length.

Parameters:

coords - the image coordinate system providing angle and scale data

originTrack - the point mass providing origin data

Method Detail

setFixedOrigin

public void setFixedOrigin(boolean fixed,
                           int n)

Overrides ImageCoordSystem setFixedOrigin method. Origin is never fixed for a reference frame.

Overrides:

setFixedOrigin in class ImageCoordSystem

Parameters:

fixed - ignored

n - the frame number

setLocked

public void setLocked(boolean locked)

Overrides setLocked method.

Overrides:

setLocked in class ImageCoordSystem

Parameters:

locked - true to lock the coordinate system

isLocked

public boolean isLocked()

Overrides isLocked method.

Overrides:

isLocked in class ImageCoordSystem

Returns:

true if this is locked

propertyChange

public void propertyChange(java.beans.PropertyChangeEvent e)

Responds to property change events. ReferenceFrame receives the following events: "step" and "mass" from PointMass (origin), and "transform" from ImageCoordSystem (angle and scale).

Specified by:

propertyChange in interface java.beans.PropertyChangeListener

Parameters:

e - the property change event

getCoords

public ImageCoordSystem getCoords()

Gets the parent image coordinate system. The parent coords are returned after setting its angles and scales to match this.

Returns:

the parent image coordinate system

getOriginTrack

public PointMass getOriginTrack()

Gets the origin track of this reference frame.

Returns:

the point mass supplying origin data

setOrigins

protected void setOrigins()

Sets the origins of the image coordinate system.