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/*
* $RCSfile$
*
* Copyright 1998-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
* $Revision$
* $Date$
* $State$
*/
package javax.vecmath;
import java.lang.Math;
/**
* A 2 element point that is represented by double precision floating
* point x,y coordinates.
*
*/
public class Point2d extends Tuple2d implements java.io.Serializable {
// Compatible with 1.1
static final long serialVersionUID = 1133748791492571954L;
/**
* Constructs and initializes a Point2d from the specified xy coordinates.
* @param x the x coordinate
* @param y the y coordinate
*/
public Point2d(double x, double y)
{
super(x,y);
}
/**
* Constructs and initializes a Point2d from the specified array.
* @param p the array of length 2 containing xy in order
*/
public Point2d(double[] p)
{
super(p);
}
/**
* Constructs and initializes a Point2d from the specified Point2d.
* @param p1 the Point2d containing the initialization x y data
*/
public Point2d(Point2d p1)
{
super(p1);
}
/**
* Constructs and initializes a Point2d from the specified Point2f.
* @param p1 the Point2f containing the initialization x y data
*/
public Point2d(Point2f p1)
{
super(p1);
}
/**
* Constructs and initializes a Point2d from the specified Tuple2d.
* @param t1 the Tuple2d containing the initialization x y data
*/
public Point2d(Tuple2d t1)
{
super(t1);
}
/**
* Constructs and initializes a Point2d from the specified Tuple2f.
* @param t1 the Tuple2f containing the initialization x y data
*/
public Point2d(Tuple2f t1)
{
super(t1);
}
/**
* Constructs and initializes a Point2d to (0,0).
*/
public Point2d()
{
super();
}
/**
* Computes the square of the distance between this point and point p1.
* @param p1 the other point
*/
public final double distanceSquared(Point2d p1)
{
double dx, dy;
dx = this.x-p1.x;
dy = this.y-p1.y;
return dx*dx+dy*dy;
}
/**
* Computes the distance between this point and point p1.
* @param p1 the other point
*/
public final double distance(Point2d p1)
{
double dx, dy;
dx = this.x-p1.x;
dy = this.y-p1.y;
return Math.sqrt(dx*dx+dy*dy);
}
/**
* Computes the L-1 (Manhattan) distance between this point and
* point p1. The L-1 distance is equal to abs(x1-x2) + abs(y1-y2).
* @param p1 the other point
*/
public final double distanceL1(Point2d p1)
{
return( Math.abs(this.x-p1.x) + Math.abs(this.y-p1.y));
}
/**
* Computes the L-infinite distance between this point and
* point p1. The L-infinite distance is equal to
* MAX[abs(x1-x2), abs(y1-y2)].
* @param p1 the other point
*/
public final double distanceLinf(Point2d p1)
{
return(Math.max( Math.abs(this.x-p1.x), Math.abs(this.y-p1.y)));
}
}
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