org.microemu.device.impl
Class Polygon

java.lang.Object
  org.microemu.device.impl.Shape
      org.microemu.device.impl.Polygon

All Implemented Interfaces:

java.lang.Cloneable

public class Polygon
extends org.microemu.device.impl.Shape

This class is intended for storing georaphical polygons such as boundary data for wards, coastlines etc.

Extracted from uk.ac.leeds.ccg.geotools.GeoPolygon

Since:

0.5.0

Author:

James Macgill, Mathieu Van Loon - getPointsAsArrayX, getPointsAsArrayY, dropVector

Field Summary

int	npoints Number of points in polygon.
int[]	xpoints Array of points.
int[]	ypoints Array of points.

Constructor Summary

Polygon()
Create an empty polygon.

Polygon(int[] xpoints, int[] ypoints, int npoints)
Construct a polygon with full details.

Polygon(Polygon poly)
Construct a GeoPolygon based on an existing GeoPolygon.

Method Summary

void	addPoint(int x, int y) Add a vertex to the polygon.
boolean	contains(int x, int y) Tests to see if a point is contained by this polygon.
org.microemu.device.impl.Rectangle	getBounds()

Methods inherited from class org.microemu.device.impl.Shape

clone

Methods inherited from class java.lang.Object

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

Field Detail

npoints

public int npoints

Number of points in polygon.

xpoints

public int[] xpoints

Array of points.

ypoints

public int[] ypoints

Array of points.

Constructor Detail

Polygon

public Polygon()

Create an empty polygon.

Polygon

public Polygon(int[] xpoints,
               int[] ypoints,
               int npoints)

Construct a polygon with full details.

Parameters:

id - Polygon ID.

xcent - X-coordinate of centroid.

ycent - Y-coordinate of centroid.

xpoints - Array of x values (npoints in size).

ypoints - Array of y values (npoints in size).

npoints - Number of points.

Polygon

public Polygon(Polygon poly)

Construct a GeoPolygon based on an existing GeoPolygon.

Parameters:

poly - GeoPolygon to clone.

Method Detail

addPoint

public void addPoint(int x,
                     int y)

Add a vertex to the polygon.

Parameters:

x - X-coordinate of point to add.

y - Y-coordinate of point to add.

getBounds

public org.microemu.device.impl.Rectangle getBounds()

Specified by:

getBounds in class org.microemu.device.impl.Shape

contains

public boolean contains(int x,
                        int y)

Tests to see if a point is contained by this polygon.

Specified by:

contains in class org.microemu.device.impl.Shape

Parameters:

p - The GeoPoint to test.

Returns:

boolean True if point is contained by this polygon.