Revision 4182 org.gvsig.raster.gdal/trunk/org.gvsig.raster.gdal/org.gvsig.raster.gdal.io/src/main/java/org/gvsig/jgdal/GdalColorTable.java

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GdalColorTable.java
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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* GNU General Public License for more details.
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*
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA  02110-1301, USA.
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*
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*
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*/
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package org.gvsig.jgdal;
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import org.gdal.gdal.ColorTable;


  		




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public class GdalColorTable extends ColorTable {


  		




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//	private native int getColorEntryCountNat(long cPtr);


  		




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


  		




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	/**


  		




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


  		




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	 * GdalColorTable en C


  		




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	 * 


  		




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	 * @param cPtr	direcci?n de memoria del objeto 


  		




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	 */


  		




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	public GdalColorTable(long cPtr){


  		




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		super(cPtr, true);


  		




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	}


  		




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	/**


  		




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	 * Obtiene


  		




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	 * @return


  		




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	 * @throws GdalException


  		




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	 */


  		




  
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public class GdalColorTable {


  		




  
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    private ColorTable ct;


  		




  
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    /**


  		




  
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     *


  		




  
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     */


  		




  
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    public GdalColorTable(ColorTable ct) {


  		




  
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        this.ct = ct;


  		




  
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    }


  		




  
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	public int getColorEntryCount() throws GdalException{


  		




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//		if (cPtr == 0)


  		




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


  		




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		return this.GetCount();


  		




  
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		return this.ct.GetCount();


  		




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	}


  		




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	public static long getCPtr(ColorTable obj) {


  		




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	    return ColorTable.getCPtr(obj);


  		




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	}


  		




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	/**


  		




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


  		




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	 * y la devuelve en forma de objeto GdalColorEntry.


  		




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


  		




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	 * @return Objeto GdalColorEntry correspondiente a pos


  		




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	 * @throws GdalException


  		




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	 */


  		




  
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	public GdalColorEntry getColorEntryAsRGB(int pos) throws GdalException{


  		




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//		if (cPtr == 0)


  		




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


  		




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


  		




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


  		




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		GdalColorEntry entry = new GdalColorEntry();


  		




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		Color values =  this.GetColorEntry(pos);


  		




  
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		Color values =  this.ct.GetColorEntry(pos);


  		




  
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		if(values == null)


  		




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


  		




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


  		




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


  		




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


  		




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


  		




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		if(values == null)


  		




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


  		




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		return entry;


  		




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	}


  		




  
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}


  		












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