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The JTS Topology Suite is an API for modelling and
manipulating 2-dimensional linear geometry. It provides
numerous geometric predicates and functions. JTS
conforms to the Simple Features Specification for
SQL published by the Open GIS Consortium.
/*
* The JTS Topology Suite is a collection of Java classes that
* implement the fundamental operations required to validate a given
* geo-spatial data set to a known topological specification.
*
* Copyright (C) 2001 Vivid Solutions
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* For more information, contact:
*
* Vivid Solutions
* Suite #1A
* 2328 Government Street
* Victoria BC V8T 5G5
* Canada
*
* (250)385-6040
* www.vividsolutions.com
*/
package com.vividsolutions.jts.noding;
import java.util.*;
import com.vividsolutions.jts.geom.*;
/**
* Allows comparing {@link Coordinate} arrays
* in an orientation-independent way.
*
* @author Martin Davis
* @version 1.7
*/
public class OrientedCoordinateArray
implements Comparable
{
private Coordinate[] pts;
private boolean orientation;
/**
* Creates a new {@link OrientedCoordinateArray}
* for the given {@link Coordinate} array.
*
* @param pts the coordinates to orient
*/
public OrientedCoordinateArray(Coordinate[] pts)
{
this.pts = pts;
orientation = orientation(pts);
}
/**
* Computes the canonical orientation for a coordinate array.
*
* @param pts the array to test
* @return true if the points are oriented forwards
* @return false