diva.canvas.interactor
Class QuadrantConstraint

java.lang.Object
  diva.canvas.interactor.QuadrantConstraint

All Implemented Interfaces:

PointConstraint

public class QuadrantConstraint
extends java.lang.Object
implements PointConstraint

Keep a point within one of the four quadrants relative to some reference point.

Version:

$Id: QuadrantConstraint.java 38798 2005-07-08 20:00:01Z cxh $

Author:

John Reekie

Field Summary

private java.awt.geom.Point2D	_origin The point
private double	_originX
private double	_originY
private int	_quadrant The quadrant

Constructor Summary

QuadrantConstraint(java.awt.geom.Point2D origin, int quadrant)
Create a new QuadrantConstraint with the given origin and quadrant.

Method Summary

void	constrain(java.awt.geom.Point2D point) Ask the bounds constraint to constrain this point.
java.awt.geom.Point2D	getOrigin() Get the origin
int	getQuadrant() Get the quadrant
void	setOrigin(java.awt.geom.Point2D origin) Set the origin
void	setQuadrant(int quadrant) Set the quadrant
boolean	snapped() Return false.

Methods inherited from class java.lang.Object

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

Field Detail

_origin

private java.awt.geom.Point2D _origin

The point

_originX

private double _originX

_originY

private double _originY

_quadrant

private int _quadrant

The quadrant

Constructor Detail

QuadrantConstraint

public QuadrantConstraint(java.awt.geom.Point2D origin,
                          int quadrant)

Create a new QuadrantConstraint with the given origin and quadrant.

Method Detail

constrain

public void constrain(java.awt.geom.Point2D point)

Ask the bounds constraint to constrain this point.

Specified by:

constrain in interface PointConstraint

getOrigin

public java.awt.geom.Point2D getOrigin()

Get the origin

getQuadrant

public int getQuadrant()

Get the quadrant

setOrigin

public void setOrigin(java.awt.geom.Point2D origin)

Set the origin

setQuadrant

public void setQuadrant(int quadrant)

Set the quadrant

snapped

public boolean snapped()

Return false. This constraint never snaps.

Specified by:

snapped in interface PointConstraint