Package org.opensourcephysics.display

Class Protractor

java.lang.Object

org.opensourcephysics.display.Circle

org.opensourcephysics.display.MeasuredCircle

org.opensourcephysics.display.InteractiveCircle

org.opensourcephysics.display.Protractor

All Implemented Interfaces:

Drawable, Interactive, Measurable

public class Protractor
extends InteractiveCircle
implements Drawable

A Protractor with an arrow that can be used to measure angles.

Version:

1.0

Author:

W. Christian

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	Protractor.Tip

Nested classes/interfaces inherited from class org.opensourcephysics.display.InteractiveCircle

InteractiveCircle.InteractiveCircleLoader

Field Summary

Fields

Modifier and Type	Field	Description
protected double	arrowTheta
protected DecimalFormat	f
protected double	orientation
protected boolean	showTheta
protected InteractiveLabel	tauBox
protected Protractor.Tip	tip

Fields inherited from class org.opensourcephysics.display.Circle

color, pixRadius, x, y

Constructor Summary

Constructors

Constructor	Description
Protractor()	Constructs a protractor with a default radius of 40 pixels.
Protractor(int protractorRadius)	Constructs a protractor with the given pixel size.

Method Summary

Modifier and Type	Method	Description
void	draw(DrawingPanel panel, Graphics g)	Draws the protractor on the given drawing panel.
Interactive	findInteractive(DrawingPanel panel, int xpix, int ypix)
double	getOrientation()	Gets the orientation of the protractor.
double	getTheta()	Gets the angle of the arrow on the protractor.
boolean	isShowTheta()	Gets the show theta property.
void	setOrientation(double angle)	Sets the orientation of the protractor.
void	setShowTheta(boolean show)	Shows theta when the protractor is drawn when true.
void	setTheta(double angle)	Sets the angle of the arrow on the protractor.

Methods inherited from class org.opensourcephysics.display.InteractiveCircle

getLoader, isEnabled, isInside, setEnabled

Methods inherited from class org.opensourcephysics.display.MeasuredCircle

getXMax, getXMin, getYMax, getYMin, isMeasured, setMeasured

Methods inherited from class org.opensourcephysics.display.Circle

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.Interactive

getX, getY, isInteractive, setX, setXY, setY

Methods inherited from interface org.opensourcephysics.display.Measurable

getXMax, getXMin, getYMax, getYMin, isMeasured

Field Details

tip

protected Protractor.Tip tip

arrowTheta

protected double arrowTheta

orientation

protected double orientation

f

protected DecimalFormat f

showTheta

protected boolean showTheta

tauBox

protected InteractiveLabel tauBox

Constructor Details

Protractor

public Protractor(int protractorRadius)

Constructs a protractor with the given pixel size.

Parameters:

protractorRadius - int

Protractor

public Protractor()

Constructs a protractor with a default radius of 40 pixels.

Method Details

setTheta

public void setTheta(double angle)

Sets the angle of the arrow on the protractor.

Parameters:

theta - double

getTheta

public double getTheta()

Gets the angle of the arrow on the protractor.

Returns:

double

setOrientation

public void setOrientation(double angle)

Sets the orientation of the protractor.

Parameters:

angle - double

getOrientation

public double getOrientation()

Gets the orientation of the protractor.

Returns:

double

setShowTheta

public void setShowTheta(boolean show)

Shows theta when the protractor is drawn when true.

Parameters:

show - boolean

isShowTheta

public boolean isShowTheta()

Gets the show theta property.

Returns:

boolean

findInteractive

public Interactive findInteractive(DrawingPanel panel,
 int xpix,
 int ypix)

Specified by:

findInteractive in interface Interactive

Overrides:

findInteractive in class InteractiveCircle

draw

public void draw(DrawingPanel panel,
 Graphics g)

Draws the protractor on the given drawing panel.

Specified by:

draw in interface Drawable

Overrides:

draw in class Circle

Parameters:

panel - DrawingPanel

g - Graphics