org.geotools.algorithms
Interface GeometryProperties

All Known Implementing Classes:

RobustGeometryProperties

public interface GeometryProperties

Version:

$Id: GeometryProperties.java,v 1.6 2004/02/24 10:50:37 aaime Exp $

Author:

James Macgill, CCG

Method Summary

double	getArea(com.vividsolutions.jts.geom.Geometry g) Calculates and returns the area of the specified geometry.
double	getPerimeter(com.vividsolutions.jts.geom.Geometry g) Calculates and returns the perimeter of the specified geometry.

Method Detail

getArea

public double getArea(com.vividsolutions.jts.geom.Geometry g)

Calculates and returns the area of the specified geometry.
For Polygons, this is the total area inside the external ring less the total of any contained by interior rings. GeometryCollections (including MultiPolygons) are iterated through so the result is the sum of all polygons anywhere within the collection. Any geometry other than Polgyon or a collection returns 0;

Parameters:

g - The Geometry to calculate the area of.

Returns:

The total area of the Geometry.

getPerimeter

public double getPerimeter(com.vividsolutions.jts.geom.Geometry g)

Calculates and returns the perimeter of the specified geometry.
For Polygons, this is the total length of the exterior ring and all internal rings. For LineStrings, the total line length is returned. GeometryCollections are iterated through so the result is the sum of all Polygon and Line geometries anywhere within the collection. Any point geometries return a value of 0;

Parameters:

g - The Geometry to calculate the area of.

Returns:

The total area of the Geometry.