jmri.jmrix.rps
Class Region

java.lang.Object
  jmri.jmrix.rps.Region

@Immutable
public class Region
extends Object

Represent a region in space for the RPS system.

The region is specfied by a right-handed set of points.

Regions are immutable once created.

This initial implementation of a Region is inherently 2-dimensional, deferring use of the 3rd (Z) dimension to a later implementation. It uses a Java2D GeneralPath to handle the inside/outside calculations.

Author:

Bob Jacobsen Copyright (C) 2007, 2008

Constructor Summary

Region(Point3d[] points)

Region(String s)
Ctor from a string like "(0,0,0);(1,0,0);(1,1,0);(0,1,0)"

Method Summary

boolean	equals(Object ro)
Shape	getPath() Provide Java2D access to the shape of this region.
int	hashCode()
boolean	isInside(Point3d p)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

Region

public Region(Point3d[] points)

Region

public Region(String s)

Ctor from a string like "(0,0,0);(1,0,0);(1,1,0);(0,1,0)"

Method Detail

getPath

public Shape getPath()

Provide Java2D access to the shape of this region.

This should provide a copy of the GeneralPath path, to keep the underlying object immutable, but by returning a Shape type hopefully we achieve the same result with a little better performance. Please don't assume you can cast and modify this.

toString

public String toString()

Overrides:

toString in class Object

isInside

public boolean isInside(Point3d p)

equals

public boolean equals(Object ro)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object