/*
* This file is part of Caliph & Emir.
*
* Caliph & Emir 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 of the License, or
* (at your option) any later version.
*
* Caliph & Emir 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.
*
* You should have received a copy of the GNU General Public License
* along with Caliph & Emir; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Copyright statement:
* --------------------
* (c) 2002-2005 by Mathias Lux (mathias@juggle.at)
* http://www.juggle.at, http://caliph-emir.sourceforge.net
*/
package at.lux.graphviz;
/**
* Date: 14.09.2004
* Time: 21:28:38
*
* @author Mathias Lux, mathias@juggle.at
*/
public class Vector2D {
private double x, y;
public Vector2D(double x, double y) {
this.x = x;
this.y = y;
}
public double getY() {
return y;
}
public void setY(double y) {
this.y = y;
}
public double getX() {
return x;
}
public void setX(double x) {
this.x = x;
}
public void addVector2D(Vector2D vector2D) {
x += vector2D.getX();
y += vector2D.getY();
}
public void normalize() {
double length = getLength();
if (length != 0.0) {
x = x / length;
y = y / length;
}
}
public double getLength() {
return Math.sqrt(x * x + y * y);
}
public void multiply(double scalar) {
if (scalar != 0.0) {
x *= scalar;
y *= scalar;
} else {
x = 0.0;
y = 0.0;
}
}
}