element
Class Oval

java.lang.Object
  |
  +--element.Rect
        |
        +--element.Oval

Direct Known Subclasses:

Arc, Circle

public class Oval

extends Rect

Implements an oval object. An oval is the unique elipse that fits within a particular rectangle.

Fields inherited from class element.Rect

height, left, top, width

Constructor Summary

Oval()
Constructs a trivial oval at the origin.

Oval(int x, int y, int w, int h)
Construct an oval bounded by the rectangle with upper-left (x,y), width w, and height h

Oval(Oval r)
Makes a copy of an existing oval.

Oval(Pt p, Pt q)
Construct an oval within a rectangle defined by two points.

Oval(Rect r)
Construct an oval bounded by an existing rectangle.

Method Summary

void	clearOn(DrawingWindow d) Erase oval from the drawing window d.
java.lang.Object	clone() return a distinct copy of this oval
boolean	contains(Pt p) Returns true if p is contained within oval.
void	drawOn(DrawingWindow d) Draw (in the current mode) the oval on the drawing window
boolean	equals(java.lang.Object other) Return true iff this oval equals the other
void	fillOn(DrawingWindow d) Draw a filled oval (in the current mode) on drawing window d.
int	hashCode() Return an integer for use as a hash code
java.lang.String	toString() Construct a string representation of this oval

Methods inherited from class element.Rect

bottom, bottom, center, center, extend, height, height, left, left, move, moveTo, moveTo, Rectangle, right, right, top, top, width, width

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Oval

public Oval()

Constructs a trivial oval at the origin.

Oval

public Oval(Oval r)

Makes a copy of an existing oval.

Parameters:

the - existing oval

Oval

public Oval(Pt p,
            Pt q)

Construct an oval within a rectangle defined by two points.

Parameters:

p - one bounding point

q - another bounding point

Oval

public Oval(Rect r)

Construct an oval bounded by an existing rectangle.

Parameters:

r - the bounding rectangle

Oval

public Oval(int x,
            int y,
            int w,
            int h)

Construct an oval bounded by the rectangle with upper-left (x,y), width w, and height h

Parameters:

x - left of bounding rectangle

y - top of bounding rectangle

w - width of oval

h - height of oval

Method Detail

contains

public boolean contains(Pt p)

Returns true if p is contained within oval.

Overrides:

contains in class Rect

Parameters:

p - the point to be considered

Returns:

true iff p is contained within the oval.

fillOn

public void fillOn(DrawingWindow d)

Draw a filled oval (in the current mode) on drawing window d.

Overrides:

fillOn in class Rect

Parameters:

d - the target drawing window.

See Also:

DrawingWindow.fill(element.Drawable), DrawingWindow.paintMode(), DrawingWindow.invertMode()

clearOn

public void clearOn(DrawingWindow d)

Erase oval from the drawing window d.

Overrides:

clearOn in class Rect

Parameters:

d - the target drawing window

See Also:

DrawingWindow.clear(element.Drawable)

drawOn

public void drawOn(DrawingWindow d)

Draw (in the current mode) the oval on the drawing window

Overrides:

drawOn in class Rect

Parameters:

d - the target drawing window

See Also:

DrawingWindow.paintMode(), DrawingWindow.invertMode(), DrawingWindow.draw(element.Drawable)

hashCode

public int hashCode()

Return an integer for use as a hash code

Overrides:

hashCode in class Rect

Returns:

a hash code

equals

public boolean equals(java.lang.Object other)

Return true iff this oval equals the other

Overrides:

equals in class Rect

Parameters:

other - another valid oval

Returns:

true if the two are equal valued, false otherwise

clone

public java.lang.Object clone()

return a distinct copy of this oval

Overrides:

clone in class Rect

Returns:

a distinct copy of this oval

toString

public java.lang.String toString()

Construct a string representation of this oval

Overrides:

toString in class Rect

Returns:

a string representation of this oval