Application: gvSIG desktop » gvSIG raster

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

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

* MA  02110-1301, USA.

* 

*/

package org.gvsig.jgdal;

import java.awt.Color;

import org.gdal.gdal.ColorTable;

public class GdalColorTable extends ColorTable {

//        private native int getColorEntryCountNat(long cPtr);

//        private native short[] getColorEntryAsRGBNat(long cPtr, int pos);

        /**

         * Constructor de ColorTable pasandole como par?metro la referencia al objeto 

         * GdalColorTable en C

         * 

         * @param cPtr        direcci?n de memoria del objeto 

         */

        public GdalColorTable(long cPtr){

                super(cPtr, true);

        }

        /**

         * Obtiene

         * @return

         * @throws GdalException

         */

        public int getColorEntryCount() throws GdalException{

//                if (cPtr == 0)

//                    throw new GdalException("No se ha podido acceder al archivo.");

                return this.GetCount();

        }

        /**

         * Obtiene la entrada de la tabla de color de la posici?n pasada por par?metro

         * y la devuelve en forma de objeto GdalColorEntry.

         * @param pos Posici?n de la entrada de la tabla

         * @return Objeto GdalColorEntry correspondiente a pos

         * @throws GdalException

         */

        public GdalColorEntry getColorEntryAsRGB(int pos) throws GdalException{

//                if (cPtr == 0)

//                    throw new GdalException("No se ha podido acceder al archivo.");

                if ((pos < 0) || (pos >= getColorEntryCount()))

                        throw new GdalException("Entrada de la tabla de color fuera de rango");

                GdalColorEntry entry = new GdalColorEntry();

                Color values =  this.GetColorEntry(pos);

                entry.c1 =  (short) values.getRed();

                entry.c2 =  (short) values.getGreen();

                entry.c3 =  (short) values.getBlue();

                entry.c4 =  (short) values.getAlpha();

                if(values == null)

                        throw new GdalException("Error en getColorEntryAsRGB(). Posici?n de la tabla de color inexistente.");

                return entry;

        }

}