1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
/* Copyright (C) 1999 Red Hat, Inc.
This file is part of libjava.
This software is copyrighted work licensed under the terms of the
Libjava License. Please consult the file "LIBJAVA_LICENSE" for
details. */
package java.awt.geom;
/**
* @author Per Bothner <bothner@cygnus.com>
* @date Fenruary 8, 1999.
*/
/* Written using "Java Class Libraries", 2nd edition, plus online
* API docs for JDK 1.2 beta from http://www.javasoft.com.
* Status: Believed complete and correct, except that neither toString
* nor hashCode have been compared with JDK output.
*/
public abstract class Point2D implements Cloneable
{
public abstract double getX();
public abstract double getY();
public abstract void setLocation (double x, double y);
public void setLocation (Point2D pt) { setLocation(pt.getX(), pt.getY()); }
static public double distanceSq (double X1, double Y1, double X2, double Y2)
{
X2 -= X1;
Y2 -= Y1;
return X2*X2 + Y2*Y2;
}
static public double distance (double X1, double Y1, double X2, double Y2)
{
return Math.sqrt(distance(X1, Y1, X2, Y2));
}
public double distanceSq (double PX, double PY)
{
return distanceSq (getX(), PX, getY(), PY);
}
public double distance (double PX, double PY)
{
return distance (getX(), PX, getY(), PY);
}
public double distanceSq (Point2D pt)
{
return distanceSq (getX(), pt.getX(), getY(), pt.getY());
}
public double distance (Point2D pt)
{
return distance (getX(), pt.getX(), getY(), pt.getY());
}
public int hashCode() { return (int) getX() ^ (int) getY(); }
public Object clone()
{
return super.clone();
}
}
|
