/* -*- tab-width: 4 -*-
*
* Electric(tm) VLSI Design System
*
* File: Force2D.java
* Written by Team 7: Felix Schmidt, Daniel Lechner
*
* This code has been developed at the Karlsruhe Institute of Technology (KIT), Germany,
* as part of the course "Multicore Programming in Practice: Tools, Models, and Languages".
* Contact instructor: Dr. Victor Pankratius (pankratius@ipd.uka.de)
*
* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
*
* Electric(tm) 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 3 of the License, or
* (at your option) any later version.
*
* Electric(tm) 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 Electric(tm); see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, Mass 02111-1307, USA.
*/
package com.sun.electric.tool.placement.forceDirected2.forceDirected.util;
/**
* Parallel Placement
*
* Two dimensional force
*/
public class Force2D {
private double x;
private double y;
/**
* Default constructor
*/
public Force2D() {
this.x = 0;
this.y = 0;
}
/**
* Constructor
*
* @param x
* : force in x direction
* @param y
* : force in y direction
*/
public Force2D(double x, double y) {
this.x = x;
this.y = y;
}
/**
*
* @param force
*/
public Force2D add(Force2D force) {
Force2D tmp = new Force2D();
tmp.x = force.getX() + this.x;
tmp.y = force.getY() + this.y;
return tmp;
}
/**
*
* @return sqrt(x^2 + y^2) length of a vector
*/
public double getLength() {
// sqrt(x^2 + y^2) length of a vector
return Math.sqrt(this.x * this.x + this.y * this.y);
}
/**
*/
public double getX() {
return this.x;
}
/**
*/
public double getY() {
return this.y;
}
public Force2D mult(double weight) {
this.x *= weight;
this.y *= weight;
return this;
}
/**
*
* @param x
*/
public void setX(double x) {
this.x = x;
}
/**
*
* @param y
*/
public void setY(double y) {
this.y = y;
}
@Override
public String toString() {
StringBuilder builder = new StringBuilder();
builder.append("Force = (");
builder.append(this.x);
builder.append(", ");
builder.append(this.y);
builder.append(")");
return builder.toString();
}
}