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Class objects.EuRadius 

java.lang.Object
   |
   +----objects.EuObject
           |
           +----objects.EuRadius
public class EuRadius
extends EuObject
implements constants
An instance of this class represents a radius, i.e. a nonnegative integer which can be used to form circles.

Variable Index

o radius

Constructor Index

o EuRadius()
This alternative constructor instantiates the protoRadius, indicating an unset radius.
o EuRadius(double)
The constructor checks that the radius is indeed a nonnegative integer.

Method Index

o atParameter(double)
Call has no meaning, return (0,0)
o castIdentical(EuObject)
o closureContains(EuVector)
Determines whether or not a given point is contained in the closure of the present object (up to a small error,
o draw(Graphics, mouseInfo)
Draw an oval with the radius centered at the top left corner.
o interiorContains(EuVector)
Determines whether or not a given point is contained in the interior the present object (up to a small error,
o mouseVicinity(mouseVector, mouseInfo)
The radius is not accessible by mouse, so return false.
o myFullShadow()
o overlaps(EuObject)
o setShadow(int)
Sets the
o subType()
o type()

Variables

o radius 
 public EuReal radius

Constructors

o EuRadius 
 public EuRadius(double r) throws LeaRuntimeException, WarningTurnedException
The constructor checks that the radius is indeed a nonnegative integer. A zero radius leads to a warning.

Parameters:
r - the radius
Throws: LeaRuntimeException,
WarningTurnedException
o EuRadius 
 public EuRadius()
This alternative constructor instantiates the protoRadius, indicating an unset radius. It is distinguihed internally by having a negative radius.

Methods

o atParameter 
 public EuWorkVector atParameter(double t)
Call has no meaning, return (0,0)

Parameters:
t - ignored
Returns:
null vector
Overrides:
atParameter in class EuObject
o draw 
 public void draw(Graphics g,
                  mouseInfo info)
Draw an oval with the radius centered at the top left corner.

Parameters:
g - the Graphics handle on the window
info - information used in scaling and positioning the object
Overrides:
draw in class EuObject
o mouseVicinity 
 public boolean mouseVicinity(mouseVector mouseAt,
                              mouseInfo info)
The radius is not accessible by mouse, so return false.

Parameters:
mouseAt - The coordinates of the mouse position, ignored
info - information used in locating the object on screen, irrelevant
Returns:
false
Overrides:
mouseVicinity in class EuObject
o castIdentical 
 public boolean castIdentical(EuObject other)
Parameters:
other - the object being compared to the present one
Returns:
true if passed object is a @see EuRadius with the same @see radius parameter.
Overrides:
castIdentical in class EuObject
o interiorContains 
 public boolean interiorContains(EuVector point)
Determines whether or not a given point is contained in the interior the present object (up to a small error,

Overrides:
interiorContains in class EuObject
o closureContains 
 public boolean closureContains(EuVector point)
Determines whether or not a given point is contained in the closure of the present object (up to a small error,

Overrides:
closureContains in class EuObject
o overlaps 
 public boolean overlaps(EuObject other)
Parameters:
other - the object being compared to the present one
Returns:
true if passed object is a @see EuRadius
Overrides:
overlaps in class EuObject
o type 
 public int type()
Returns:
@see RADIUS
Overrides:
type in class EuObject
o subType 
 public int subType()
Returns:
@see A_RADIUS
Overrides:
subType in class EuObject
o myFullShadow 
 public int myFullShadow()
Returns:
0, the @see EuLab index of the protoRadius.
Overrides:
myFullShadow in class EuObject
o setShadow 
 public void setShadow(int i)
Sets the @see EuLab number of the full object behind the present one.

Returns:
i the EuLab index (ignored)
Overrides:
setShadow in class EuObject 
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