

/*
 * Copyright (c) 2016 Vivid Solutions.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * and Eclipse Distribution License v. 1.0 which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v20.html
 * and the Eclipse Distribution License is available at
 *
 * http://www.eclipse.org/org/documents/edl-v10.php.
 */
package org.locationtech.jts.index.chain;

import org.locationtech.jts.geom.LineSegment;

/**
 * The action for the internal iterator for performing
 * overlap queries on a MonotoneChain
 *
 * @version 1.7
 */
public class MonotoneChainOverlapAction
{
  protected LineSegment overlapSeg1 = new LineSegment();
  protected LineSegment overlapSeg2 = new LineSegment();

  /**
   * This function can be overridden if the original chains are needed
   *
   * @param start1 the index of the start of the overlapping segment from mc1
   * @param start2 the index of the start of the overlapping segment from mc2
   */
  public void overlap(MonotoneChain mc1, int start1, MonotoneChain mc2, int start2)
  {
    mc1.getLineSegment(start1, overlapSeg1);
    mc2.getLineSegment(start2, overlapSeg2);
    overlap(overlapSeg1, overlapSeg2);
  }

  /**
   * This is a convenience function which can be overridden to obtain the actual
   * line segments which overlap
   * @param seg1
   * @param seg2
   */
  public void overlap(LineSegment seg1, LineSegment seg2)
  {
  }
}
