net.sourceforge.plantuml.BasicEnsureVisible Maven / Gradle / Ivy

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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: 7903 $
 *
 */
package net.sourceforge.plantuml;

public class BasicEnsureVisible implements EnsureVisible {

	private double minX = Double.MAX_VALUE;
	private double maxX = -Double.MAX_VALUE;
	private double minY = Double.MAX_VALUE;
	private double maxY = -Double.MAX_VALUE;

	public void ensureVisible(double x, double y) {
		if (x > maxX) {
			maxX = x;
		}
		if (x < minX) {
			minX = x;
		}
		if (y > maxY) {
			maxY = y;
		}
		if (y < minY) {
			minY = y;
		}
	}

	public String getCoords() {
		if (minX == Double.MAX_VALUE) {
			return "0,0,0,0";
		}
		final int x1 = (int) minX;
		final int y1 = (int) minY;
		final int x2 = (int) maxX;
		final int y2 = (int) maxY;
		return "" + x1 + "," + y1 + "," + x2 + "," + y2;
	}

}