Package org.opensourcephysics.media.core

Class TrackableCircle

java.lang.Object

org.opensourcephysics.display.Circle

org.opensourcephysics.media.core.TrackableCircle

All Implemented Interfaces:

Drawable, Trackable

public class TrackableCircle
extends Circle
implements Trackable

This is a circle that implements the Trackable interface and is associated with a single video frame. The draw method illustrates the process of transforming imagespace to worldspace coordinates.

Version:

1.0

Author:

Douglas Brown

Field Summary

Fields

Modifier and Type	Field	Description
protected int	n

Fields inherited from class org.opensourcephysics.display.Circle

color, pixRadius, x, y

Fields inherited from interface org.opensourcephysics.media.core.Trackable

PROPERTY_ADJUSTING

Constructor Summary

Constructors

Constructor	Description
TrackableCircle(int n, double imageX, double imageY)	Constructs a TrackableCircle.

Method Summary

Modifier and Type	Method	Description
void	draw(DrawingPanel panel, Graphics g)	Overrides the Circle draw method.
int	getFrameNumber()	Gets the frame number.

Methods inherited from class org.opensourcephysics.display.Circle

getLoader, getX, getY, setX, setXY, setY, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opensourcephysics.display.Drawable

isInteractive

Field Details

n

protected int n

Constructor Details

TrackableCircle

public TrackableCircle(int n,
 double imageX,
 double imageY)

Constructs a TrackableCircle.

Parameters:

n - the video frame number

imageX - the x position in imagespace

imageY - the y position in imagespace

Method Details

getFrameNumber

public int getFrameNumber()

Gets the frame number.

Returns:

the frame number

draw

public void draw(DrawingPanel panel,
 Graphics g)

Overrides the Circle draw method.

Specified by:

draw in interface Drawable

Overrides:

draw in class Circle

Parameters:

panel - the drawing panel requesting the drawing

g - the graphics context on which to draw