com.vistech.shapes
Class Ellipse

java.lang.Object
  |
  +--com.vistech.shapes.Shapes
        |
        +--com.vistech.shapes.Ellipse

All Implemented Interfaces:

java.lang.Cloneable, Drawable, Fillable, java.io.Serializable

public class Ellipse

extends Shapes

implements Fillable

Represents an interactively drawable ellipse.

Version:

1.0 20 Dec 1999

Author:

Larry Rodrigues

See Also:

Serialized Form

Field Summary

protected boolean	filled
protected int	ht Bounding box parameters.
protected int	wid Bounding box parameters.

Fields inherited from class com.vistech.shapes.Shapes

basicStroke, cur, drawingColor, fillColor, fillOn, font, path, shapeCount, smallRectsOn, st

Fields inherited from interface com.vistech.shapes.Drawable

ANNOTEXT, ARROW, BOX, CUBIC_CURVE, CURVE, DOUBLE_HEADED_ARROW, ELLIPSE, LINE, NONE, POLYGON

Constructor Summary

Ellipse()

Method Summary

boolean	contains(java.awt.Graphics2D g, int x, int y) Vhecks whether the specified point contained in the shape.
void	draw(java.awt.Graphics2D g) Draws the shape permanently, which happens when the mouse is released.
void	drawEllipse(java.awt.Graphics2D g)
void	drawInteractive(java.awt.Graphics2D g) Draws interactively on a Graphics context g.
void	drawPermanent(java.awt.Graphics2D g) Draws on a Graphics context g.
void	drawSmallRects(java.awt.Graphics2D g) Draws small rectangle at the shape corners to indicate that the shape is active.
void	erase(java.awt.Graphics2D g) Erase the shape.
void	fill(java.awt.Graphics2D g, java.awt.Color color) Fills with a given color.
void	fillEllipse(java.awt.Graphics2D g)
void	init(int x, int y) Initializes the Ellipse parameters.
void	move(java.awt.Graphics2D g, int diffx, int diffy) Moves the shape by a specified displacement.
Shapes	saveCurShape(java.awt.Graphics2D g, int shCnt) Draws and returns itself.
void	setCurrentPosition(int x, int y) Sets the current point.

Methods inherited from class com.vistech.shapes.Shapes

contains, copy, getCurrentPosition, getDrawingColor, getFillColor, getFillOn, getFont, getGeneralPath, getShapeCount, getSmallRectsOn, getStartPosition, getStroke, setCurrentPosition, setDrawingColor, setFillColor, setFillOn, setFont, setGeneralPath, setShapeCount, setSmallRectsOn, setStartPosition, setStroke

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.vistech.shapes.Drawable

setCurrentPosition

Field Detail

wid

protected int wid

Bounding box parameters.

ht

protected int ht

Bounding box parameters.

filled

protected boolean filled

Constructor Detail

Ellipse

public Ellipse()

Method Detail

init

public void init(int x,
                 int y)

Initializes the Ellipse parameters. The arguments provide the starting point of the Ellipse which may be the upper left hand corner(ULHC) or bottom righthand corner coordinates(BRHC) of the bounding box sorrounding the ellipse.

Specified by:

init in interface Drawable

Overrides:

init in class Shapes

Parameters:

x - the x coordinate of the starting position.

y - the y coordinate of the starting poistion.

setCurrentPosition

public void setCurrentPosition(int x,
                               int y)

Sets the current point.

Parameters:

x - the x coordinate of the current position.

y - the y coordinate of the current poistion.

drawInteractive

public void drawInteractive(java.awt.Graphics2D g)

Draws interactively on a Graphics context g. This API does not check whether the Ellipse overflows the borders of the component. This method uses the XOR paint mode. It erases the previously drawn shape and draws a new shape in its place.

Specified by:

drawInteractive in interface Drawable

Parameters:

g - the graphics object on which the shape is to be drawn.

drawPermanent

public void drawPermanent(java.awt.Graphics2D g)

Draws on a Graphics context g. This API does not check whether the Ellipse overflows the borders of the component.

Parameters:

g - the graphics object on which the shape is to be drawn.

contains

public boolean contains(java.awt.Graphics2D g,
                        int x,
                        int y)

Description copied from class: Shapes

Vhecks whether the specified point contained in the shape.

Overrides:

contains in class Shapes

Following copied from class: com.vistech.shapes.Shapes

Parameters:

g - the graphics context on which the shape was drawn.

x - the coordinate of the point that is being checked for containment.

y - the coordinate of the point that is being checked for containment.

drawSmallRects

public void drawSmallRects(java.awt.Graphics2D g)

Description copied from class: Shapes

Draws small rectangle at the shape corners to indicate that the shape is active. For example, a shape that is being moved is surrounded by small rectagles at the shape corners. small rectab

Overrides:

drawSmallRects in class Shapes

Following copied from class: com.vistech.shapes.Shapes

Parameters:

g - the graphics context on which the shape was drawn.

draw

public void draw(java.awt.Graphics2D g)

Description copied from interface: Drawable

Draws the shape permanently, which happens when the mouse is released.

Specified by:

draw in interface Drawable

Following copied from interface: com.vistech.shapes.Drawable

Parameters:

g - the graphcs context on which the shape is drawn.

move

public void move(java.awt.Graphics2D g,
                 int diffx,
                 int diffy)

Description copied from interface: Drawable

Moves the shape by a specified displacement.

Specified by:

move in interface Drawable

Following copied from interface: com.vistech.shapes.Drawable

Parameters:

x - the displacement.

y - the displacement.

erase

public void erase(java.awt.Graphics2D g)

Description copied from interface: Drawable

Erase the shape.

Specified by:

erase in interface Drawable

Following copied from interface: com.vistech.shapes.Drawable

Parameters:

g - the graphcs context on which the shape was drawn.

fill

public void fill(java.awt.Graphics2D g,
                 java.awt.Color color)

Fills with a given color.

Specified by:

fill in interface Fillable

Parameters:

g - the graphics object on which the shape is to be drawn

saveCurShape

public Shapes saveCurShape(java.awt.Graphics2D g,
                           int shCnt)

Draws and returns itself. shCount is set by the caller.

Parameters:

g - the graphics object on which the shape is to be drawn.

shCnt - the shape count.

drawEllipse

public void drawEllipse(java.awt.Graphics2D g)

fillEllipse

public void fillEllipse(java.awt.Graphics2D g)