Class MonotoneChainSelectAction

1
2
3	/*
4	* Copyright (c) 2016 Vivid Solutions.
5	*
6	* All rights reserved. This program and the accompanying materials
7	* are made available under the terms of the Eclipse Public License 2.0
8	* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
9	* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v20.html
10	* and the Eclipse Distribution License is available at
11	*
12	* http://www.eclipse.org/org/documents/edl-v10.php.
13	*/
14	package org.locationtech.jts.index.chain;
15
16	import org.locationtech.jts.geom.Envelope;
17	import org.locationtech.jts.geom.LineSegment;
18	/**
19	* The action for the internal iterator for performing
20	* envelope select queries on a MonotoneChain
21	*
22	* @version 1.7
23	*/
24	public class MonotoneChainSelectAction
25	{
26	// these envelopes are used during the MonotoneChain search process
27	//Envelope tempEnv1 = new Envelope();
28
29	LineSegment selectedSegment = new LineSegment();
30
31	/**
32	* This method is overridden
33	* to process a segment
34	* in the context of the parent chain.
35	*
36	* @param mc the parent chain
37	* @param startIndex the index of the start vertex of the segment being processed
38	*/
39	public void select(MonotoneChain mc, int startIndex)
40	{
41	mc.getLineSegment(startIndex, selectedSegment);
42	// call this routine in case select(segmenet) was overridden
43	select(selectedSegment);
44	}
45
46	/**
47	* This is a convenience method which can be overridden to obtain the actual
48	* line segment which is selected.
49	*
50	* @param seg
51	*/
52	public void select(LineSegment seg)
53	{
54	}
55	}
56