com.vividsolutions.jump.geom

Class InteriorPointFinder

java.lang.Object

com.vividsolutions.jump.geom.InteriorPointFinder

public class InteriorPointFinder
extends java.lang.Object

Find a reasonable point at which to label a Geometry.

Algorithm is:

• Find the intersections between the geometry and a line halfway down the envelope
• Pick the midpoint of the largest intersection (the intersections will be lines and points)

Constructor Summary

Constructors

Constructor and Description
InteriorPointFinder()

Method Summary

Methods

Modifier and Type	Method and Description
com.vividsolutions.jts.geom.Coordinate	centre(com.vividsolutions.jts.geom.Envelope envelope) Returns the centre-of-mass of the envelope.
protected com.vividsolutions.jts.geom.Geometry	envelopeMiddle(com.vividsolutions.jts.geom.Geometry geometry)
com.vividsolutions.jts.geom.Coordinate	findPoint(com.vividsolutions.jts.geom.Geometry geometry) Finds a reasonable point at which to label a Geometry.
protected com.vividsolutions.jts.geom.Geometry	widestGeometry(com.vividsolutions.jts.geom.Geometry geometry)

Methods inherited from class java.lang.Object

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

Constructor Detail

InteriorPointFinder

public InteriorPointFinder()

Method Detail

findPoint

public com.vividsolutions.jts.geom.Coordinate findPoint(com.vividsolutions.jts.geom.Geometry geometry)

Finds a reasonable point at which to label a Geometry.

Parameters:

geometry - the geometry to analyze

Returns:

the midpoint of the largest intersection between the geometry and a line halfway down its envelope

widestGeometry

protected com.vividsolutions.jts.geom.Geometry widestGeometry(com.vividsolutions.jts.geom.Geometry geometry)

envelopeMiddle

protected com.vividsolutions.jts.geom.Geometry envelopeMiddle(com.vividsolutions.jts.geom.Geometry geometry)

centre

public com.vividsolutions.jts.geom.Coordinate centre(com.vividsolutions.jts.geom.Envelope envelope)

Returns the centre-of-mass of the envelope.

Parameters:

envelope - the envelope to analyze

Returns:

the centre of the envelope