Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * This program 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.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.utils;

import java.text.DecimalFormat;

import java.text.DecimalFormatSymbols;

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program 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.

 *

 * This program 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 this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id: DoubleUtilities.java 29631 2009-06-29 16:56:19Z jpiera $

 * $Log$

 * Revision 1.3  2006-10-30 11:59:47  nacho

 * formateado de double

 *

 * Revision 1.2  2006/09/13 08:10:07  jorpiell

 * Se limita el n?mero de decimales por arriba y por abajo

 *

 * Revision 1.1  2006/05/16 13:02:41  jorpiell

 * Se ha a?adido la clase DoubleUtiles, donde ha un metodo para limitar el tama?o de los decimales de un double y para quitar los "puntos" de la parte entera

 *

 *

 */

/**

 * This class has some methods to manage "Doubles"

 * @author Jorge Piera Llodr? (piera_jor@gva.es)

 */

public class DoubleUtilities {

        /**

         * Formats a double with an specified number of decimals. It 

         * removes the separator character of the integer part. 

         * @param value

         * Separator char of the integer part

         * @param decimalSeparator

         * Separator char of the decimal part

         * @param decimalsNumber

         * Number of decimals

         * @return

         * The formatted double

         */

        public static double format(double value,

                        char decimalSeparator,

                        int decimalsNumber){

                DecimalFormat dFormat = new DecimalFormat("#");

                DecimalFormatSymbols dFormatSymbols = new DecimalFormatSymbols();

                dFormatSymbols.setDecimalSeparator(decimalSeparator);

                dFormat.setMaximumFractionDigits(decimalsNumber);

                dFormat.setMaximumFractionDigits(decimalsNumber);

                dFormat.setDecimalFormatSymbols(dFormatSymbols);

                double d = Double.parseDouble(dFormat.format(value));

                return Double.parseDouble(dFormat.format(value));                

        }

        /**

         * Formats a double with an specified number of decimals. 

         * @param num

         * Value to tail

         * @param n

         * Number of decimals

         * @return

         * The formatted double

         */

    public static double format(double num, int n){

            long m = (long)Math.pow(10, n);

        num *= m;

        long aux = ((long)num);

        num = (double)((double)aux / (double)m);

        return num;

    }

}