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Class objects.EuArc 

java.lang.Object
   |
   +----objects.EuObject
           |
           +----objects.EuPoint
                   |
                   +----objects.EuCircle
                           |
                           +----objects.EuArc
public class EuArc
extends EuCircle
An instance of this class represents a circle, represented as acartesian pair and a real.

Constructor Index

o EuArc(double, double, double, double, double)
The constructor does initialization.

Method Index

o atLeftEnd()
o atRightEnd()
o castIdentical(EuObject)
See if passed object can be cast to the present one.
o closureContains(EuVector)
See if passed point lies on the arc
o draw(Graphics, mouseInfo)
Draw the arc, using the
o interiorContains(EuVector)
See if passed point lies inside the arc
o MouseVicinity(mouseVector, mouseInfo)
See if mouse position is close to this circle.
o myFullShadow()
o overlaps(EuObject)
See if another object overlaps nontrivially with this one.
o setShadow(int)
Sets the
o subType()

Constructors

o EuArc 
 public EuArc(double x,
              double y,
              double r,
              double s,
              double t) throws LeaRuntimeException, WarningTurnedException
The constructor does initialization. A zero generator vector gives a LeaRuntimeException. A degenerate interval is handled by the warner.

Parameters:
x - the first coordinate of anchor
y - the second coordinate of anchor
r - the radius
s - the left parameter of the endpoint
t - the right parameter of the endpoint

Methods

o atLeftEnd 
 public EuWorkVector atLeftEnd()
o atRightEnd 
 public EuWorkVector atRightEnd()
o draw 
 public void draw(Graphics g,
                  mouseInfo info)
Draw the arc, using the @see mouseInfo for scaling and positioning.

Parameters:
g - the Graphics handle on the window
info - information used in positioning the object
Overrides:
draw in class EuCircle
o castIdentical 
 public boolean castIdentical(EuObject other)
See if passed object can be cast to the present one.

Parameters:
other - the object being compared to the present one
Returns:
true if passed object is a @see EuCircle, @see EuHalf or @see EuInterval which is a subset of this one
Overrides:
castIdentical in class EuCircle
o MouseVicinity 
 public boolean MouseVicinity(mouseVector mouseAt,
                              mouseInfo info)
See if mouse position is close to this circle.

Parameters:
mouseAt - The coordinates of the mouse position
info - information used in locating the object on screen
Returns:
true if the mouse is close to the circle.
Overrides:
MouseVicinity in class EuCircle
o overlaps 
 public boolean overlaps(EuObject other)
See if another object overlaps nontrivially with this one.

Parameters:
other - the object being compared to the present one
Returns:
true if passed object is a @see EuCircle or @see EuArc which overlaps with this one
Overrides:
overlaps in class EuCircle
o interiorContains 
 public boolean interiorContains(EuVector point)
See if passed point lies inside the arc

Parameters:
point - the point being compared to the present arc
Returns:
true if passed point lies on the arc
Overrides:
interiorContains in class EuCircle
o closureContains 
 public boolean closureContains(EuVector point)
See if passed point lies on the arc

Parameters:
point - the point being compared to the present arc
Returns:
true if passed point lies on the arc
Overrides:
closureContains in class EuCircle
o subType 
 public int subType()
Returns:
@see AN_ARC
Overrides:
subType in class EuCircle
o myFullShadow 
 public int myFullShadow()
Returns:
a shadow for this object as recorded in @see shadow
Overrides:
myFullShadow in class EuCircle
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
Overrides:
setShadow in class EuCircle 
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