diva.canvas.interactor
Class CircleGeometry

java.lang.Object
  diva.canvas.interactor.CircleGeometry

All Implemented Interfaces:

Geometry

public class CircleGeometry
extends java.lang.Object
implements Geometry

A class that provides support for manipulating the bounds of a figure. Because this geometry only provides one site at the bounds of the figure, and transforms the bounds equally in all directions, it makes sense to only use this Geometry type for figures containing circular shapes or otherwise highly-symmetric shapes.

Version:

$Id: CircleGeometry.java 47877 2008-01-24 00:35:12Z cxh $

Author:

Nick Zamora

Nested Class Summary

class

CircleGeometry.CircleSite CircleSite is the local class that implements an editable site of Rectangle objects.

Field Summary

private double	_minSize The minimum size of the circle
private Figure	_parentFigure The figure to which the sites are attached
private java.awt.geom.Rectangle2D	_rect The defining rectangle
private static int	_siteCount The number of sites in the sites array.
private CircleGeometry.CircleSite[]	_sites The sites that exist so far

Constructor Summary

CircleGeometry(Figure figure, java.awt.geom.Rectangle2D bounds)
Create a new geometry object on the given figure and with the given initial bounds.

Method Summary

java.awt.geom.Rectangle2D	getBounds() Get the current rectangle that defines this geometry.
Figure	getFigure() Get the figure to which this geometry object is attached.
double	getMinimumSize() Get the minimum size of the rectangle.
Site	getN() Get the north site (only site).
java.awt.Shape	getShape() Get the current shape that defines this geometry
Site	getSite(int id) Get the single site with the given ID.
void	setBounds(java.awt.geom.Rectangle2D rect) Set the rectangle that defines this geometry object.
void	setMinimumSize(double minimumSize) Set the minimum size of the rectangle.
void	setShape(java.awt.Shape shape) Set the shape that defines this geometry object.
java.util.Iterator	sites() Return an iteration over the sites in this geometry object.
void	translate(double x, double y) Translate the geometry object

Methods inherited from class java.lang.Object

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

Field Detail

_parentFigure

private Figure _parentFigure

The figure to which the sites are attached

_minSize

private double _minSize

The minimum size of the circle

_rect

private java.awt.geom.Rectangle2D _rect

The defining rectangle

_siteCount

private static int _siteCount

The number of sites in the sites array. Note: SwingConstants start at 1!

_sites

private CircleGeometry.CircleSite[] _sites

The sites that exist so far

Constructor Detail

CircleGeometry

public CircleGeometry(Figure figure,
                      java.awt.geom.Rectangle2D bounds)

Create a new geometry object on the given figure and with the given initial bounds.

Method Detail

getSite

public Site getSite(int id)

Get the single site with the given ID.

getMinimumSize

public double getMinimumSize()

Get the minimum size of the rectangle.

getN

public Site getN()

Get the north site (only site).

getFigure

public Figure getFigure()

Get the figure to which this geometry object is attached. Returns null if there isn't one.

Specified by:

getFigure in interface Geometry

getShape

public java.awt.Shape getShape()

Get the current shape that defines this geometry

Specified by:

getShape in interface Geometry

getBounds

public java.awt.geom.Rectangle2D getBounds()

Get the current rectangle that defines this geometry. This returns the same shape as getShape(), but as a Rectangle2D type.

setMinimumSize

public void setMinimumSize(double minimumSize)

Set the minimum size of the rectangle. The default is 1.0.

setShape

public void setShape(java.awt.Shape shape)

Set the shape that defines this geometry object. The shape must be a Rectangle2D, or an exception will be thrown.

Specified by:

setShape in interface Geometry

setBounds

public void setBounds(java.awt.geom.Rectangle2D rect)

Set the rectangle that defines this geometry object. This is the same as setShape(), but does not need to perform the type check.

sites

public java.util.Iterator sites()

Return an iteration over the sites in this geometry object.

translate

public void translate(double x,
                      double y)

Translate the geometry object

Specified by:

translate in interface Geometry