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PlantUML is a component that allows to quickly write : * sequence diagram, * use case diagram, * class diagram, * activity diagram, * component diagram, * state diagram * object diagram

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/* ========================================================================
 * PlantUML : a free UML diagram generator
 * ========================================================================
 *
 * (C) Copyright 2009-2013, Arnaud Roques
 *
 * Project Info:  http://plantuml.sourceforge.net
 * 
 * This file is part of PlantUML.
 *
 * PlantUML 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.
 *
 * PlantUML 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 this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
 * USA.
 *
 * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
 * in the United States and other countries.]
 *
 * Original Author:  Arnaud Roques
 * 
 * Revision $Revision: 9786 $
 *
 */
package net.sourceforge.plantuml.ugraphic;

import java.awt.geom.Point2D;

public class UTranslate implements UChange {

	private final double dx;
	private final double dy;

	@Override
	public String toString() {
		return "translate dx=" + dx + " dy=" + dy;
	}

	public UTranslate(double dx, double dy) {
		this.dx = dx;
		this.dy = dy;
	}

	public UTranslate(Point2D p) {
		this(p.getX(), p.getY());
	}

	public UTranslate() {
		this(0, 0);
	}

	public double getDx() {
		return dx;
	}

	public double getDy() {
		return dy;
	}

	public Point2D getTranslated(Point2D p) {
		if (p == null) {
			return null;
		}
		return new Point2D.Double(p.getX() + dx, p.getY() + dy);
	}

	public UTranslate compose(UTranslate other) {
		return new UTranslate(dx + other.dx, dy + other.dy);
	}

	public UTranslate reverse() {
		return new UTranslate(-dx, -dy);
	}

}