acm.graphics
Class GOval

java.lang.Object
  |
  +--acm.graphics.GObject
        |
        +--acm.graphics.GOval

public class GOval extends GObject

The GOval class is a graphical object whose appearance consists of an oval.

[examples forthcoming]

Constructor Summary

GOval(double width, double height)

GOval(double x, double y, double width, double height)

Method Summary

boolean	contains(double x, double y) Checks to see whether a point is inside the object.
void	paint(Graphics g) Implements the paint operation for this graphical object.
void	setBounds(double x, double y, double width, double height) Changes the bounds used to define the oval.

Inherited Method Summary

void	addMouseListener(MouseListener listener) Adds a mouse listener to this graphical object. [Inherited from GObject]
void	addMouseMotionListener(MouseMotionListener listener) Adds a mouse motion listener to this graphical object. [Inherited from GObject]
Rectangle	getBounds() Returns the bounding box of this object, which is defined to be the smallest rectangle that covers everything drawn by the figure. [Inherited from GObject]
Color	getColor() Returns the color used to display this object. [Inherited from GObject]
Color	getFillColor() Returns the color used to display the filled region of this object. [Inherited from GObject]
double	getHeight() Returns the height of this object. [Inherited from GObject]
Point	getLocation() Returns the nearest Point corresponding to the location of this object. [Inherited from GObject]
Dimension	getSize() Returns the size of this object as a Dimension. [Inherited from GObject]
double	getWidth() Returns the width of this object. [Inherited from GObject]
double	getX() Returns the x-coordinate of the object. [Inherited from GObject]
double	getY() Returns the y-coordinate of the object. [Inherited from GObject]
boolean	isFilled() Returns whether this object is filled. [Inherited from GObject]
boolean	isVisible() Checks to see whether this object is visible. [Inherited from GObject]
void	moveToBack() Moves this object to the back of the display in stacking order. [Inherited from GObject]
void	moveToFront() Moves this object to the front of the display in stacking order. [Inherited from GObject]
void	removeMouseListener(MouseListener listener) Removes a mouse listener from this graphical object. [Inherited from GObject]
void	removeMouseMotionListener(MouseMotionListener listener) Removes a mouse motion listener from this graphical object. [Inherited from GObject]
void	scale(double sf) Scales the object on the screen by the scale factor sf, which applies in both dimensions. [Inherited from GObject]
void	scale(double sx, double sy) Scales the object on the screen by the scale factors sx and sy. [Inherited from GObject]
void	setColor(Color c) Sets the color used to display this object. [Inherited from GObject]
void	setFillColor(Color c) Sets the color used to display the filled region of this object. [Inherited from GObject]
void	setFilled(boolean fill) Sets whether this object is filled. [Inherited from GObject]
void	setLocation(double x, double y) Sets the location of this object to the point (x, y). [Inherited from GObject]
void	setSize(double width, double height) Changes the size of this object to the specified width and height. [Inherited from GObject]
void	setVisible(boolean visible) Sets whether this object is visible. [Inherited from GObject]
void	translate(double dx, double dy) Moves the object on the screen using the displacements dx and dy. [Inherited from GObject]

Constructor Detail

public GOval(double width, double height)

Constructs a new oval with the specified width and height, positioned at the origin.

Usage:

GOval goval = new GOval(width, height);

Parameters:

width	The width of the oval in pixels
height	The height of the oval in pixels

public GOval(double x, double y, double width, double height)

Constructs a new oval with the specified bounds.

Usage:

GOval goval = new GOval(x, y, width, height);

Parameters:

x	The x-coordinate of the upper left corner
y	The y-coordinate of the upper left corner
width	The width of the oval in pixels
height	The height of the oval in pixels

Method Detail

public boolean contains(double x, double y)

Checks to see whether a point is inside the object.

Usage:

if (goval.contains(x, y)) . . .

Parameters:

x	The x-coordinate of the point being tested
y	The y-coordinate of the point being tested

Returns:

true if the point (x, y) is inside the object, and false otherwise

public void paint(Graphics g)

Implements the paint operation for this graphical object. This method is not called directly by clients.

public void setBounds(double x, double y, double width, double height)

Changes the bounds used to define the oval.

Usage:

goval.setBounds(x, y, width, height);

Parameters:

x	The new x-coordinate for the oval
y	The new y-coordinate for the oval
width	The new width of the oval
height	The new height of the oval