gcc/libjava/java/awt/geom/Point2D.java

/* Copyright (C) 1999, 2000, 2002  Free Software Foundation

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath 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
General Public License for more details.

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along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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terms of your choice, provided that you also meet, for each linked
independent module, the terms and conditions of the license of that
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or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
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package java.awt.geom;

/**
 * @author Per Bothner <bothner@cygnus.com>
 * @date February 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);

  protected Point2D ()
  {
  }

  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(distanceSq(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()
  {
    try
    {
      return super.clone ();
    } 
    catch (CloneNotSupportedException _) {return null;}
  }

  public boolean equals (Object o)
  {
    if (! (o instanceof Point2D))
      return false;
    Point2D p = (Point2D) o;
    return getX () == p.getX () && getY () == p.getY ();
  }

  public static class Double extends Point2D
  {
    public double x;
    public double y;

    public Double ()
    {
      x = 0;
      y = 0;
    }

    public Double (double x, double y)
    {
      this.x = x;
      this.y = y;
    }

    public double getX ()
    {
      return x;
    }

    public double getY ()
    {
      return y;
    }

    public void setLocation (double x, double y)
    {
      this.x = x;
      this.y = y;
    }

    public String toString ()
    {
      return "(" + x + ", " + y + ")";
    }
  }

  public static class Float extends Point2D
  {
    public float x;
    public float y;

    public Float ()
    {
      x = 0;
      y = 0;
    }

    public Float (float x, float y)
    {
      this.x = x;
      this.y = y;
    }

    public double getX ()
    {
      return x;
    }

    public double getY ()
    {
      return y;
    }

    public void setLocation (double x, double y)
    {
      this.x = (float) x;
      this.y = (float) y;
    }

    public void setLocation (float x, float y)
    {
      this.x = x;
      this.y = y;
    }

    public String toString ()
    {
      return "(" + x + ", " + y + ")";
    }
  }
}