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JTS Topology Suite 1.14 with additional functions for GeoSpark

There is a newer version: 0.1.4

/*
 * 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
   * or false