Class Interval

1
2	/*
3	* Copyright (c) 2016 Vivid Solutions.
4	*
5	* All rights reserved. This program and the accompanying materials
6	* are made available under the terms of the Eclipse Public License 2.0
7	* and Eclipse Distribution License v. 1.0 which accompanies this distribution.
8	* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v20.html
9	* and the Eclipse Distribution License is available at
10	*
11	* http://www.eclipse.org/org/documents/edl-v10.php.
12	*/
13	package org.locationtech.jts.index.strtree;
14
15	import org.locationtech.jts.util.Assert;
16
17	/**
18	* A contiguous portion of 1D-space. Used internally by SIRtree.
19	* @see SIRtree
20	*
21	* @version 1.7
22	*/
23	public class Interval {
24
25	public Interval(Interval other) {
26	this(other.min, other.max);
27	}
28
29	public Interval(double min, double max) {
30	Assert.isTrue(min <= max);
31	this.min = min;
32	this.max = max;
33	}
34
35	private double min;
36	private double max;
37
38	public double getCentre() { return (min+max)/2; }
39
40	/**
41	* @return this
42	*/
43	public Interval expandToInclude(Interval other) {
44	max = Math.max(max, other.max);
45	min = Math.min(min, other.min);
46	return this;
47	}
48
49	public boolean intersects(Interval other) {
50	return !(other.min > max \|\| other.max < min);
51	}
52	public boolean equals(Object o) {
53	if (! (o instanceof Interval)) { return false; }
54	Interval other = (Interval) o;
55	return min == other.min && max == other.max;
56	}
57	}
58