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.raster.impl.grid.filter.band;

import org.gvsig.fmap.dal.coverage.RasterLocator;

import org.gvsig.fmap.dal.coverage.dataset.Buffer;

import org.gvsig.fmap.dal.coverage.datastruct.Params;

import org.gvsig.fmap.dal.coverage.exception.FilterAddException;

import org.gvsig.fmap.dal.coverage.grid.filter.BaseRasterFilter;

import org.gvsig.fmap.dal.coverage.store.props.ColorInterpretation;

import org.gvsig.raster.impl.store.ParamsImpl;

import org.gvsig.raster.util.DefaultColorConversion;

/**

 * <P>

 * Clase base para los filtros de conversi?n de RGB a HSL. La entrada ser? 

 * siempre un raster de 3 bandas que ser?n tomadas como RGB.

 * </P>

 *

 * @author Nacho Brodin (nachobrodin@gmail.com)

 */

public class RGBToHSLFilter extends BaseRasterFilter {

        public static String[]            names               = new String[] { "rgbtohsl" };

        protected DefaultColorConversion  colorConversion     = null;

        protected int                     out                 = Buffer.TYPE_BYTE;

        protected int                     redBandNumber       = -1;

        protected int                     greenBandNumber     = -1;

        protected int                     blueBandNumber      = -1;

        /**

         * Constructor

         */

        public RGBToHSLFilter() {

                super();

                setName(names[0]);

        }

        public void pre() throws FilterAddException {

                super.pre();

                out = ((Integer) params.get("outputType")).intValue();

                //A este filtro ya llega una imagen RGB con el orden de las bandas correcto 

                //ColorInterpretation colorInterpretation = getColorInterpretation();

                redBandNumber = 0;//colorInterpretation.getBand(ColorInterpretation.RED_BAND);

                greenBandNumber = 1;//colorInterpretation.getBand(ColorInterpretation.GREEN_BAND);

                blueBandNumber = 2;//colorInterpretation.getBand(ColorInterpretation.BLUE_BAND);

                if(out == Buffer.TYPE_BYTE)

                        createARGBBufferResult();

                else {

                        createBufferResult(out, 3);

                }

                if(colorConversion == null)

                        colorConversion = new DefaultColorConversion();

        }

        /**

         * Gets the result of this filter

         */

        public Object getResult(String name) {

                if (name.equals(RESULT_TRANSPARENCY)) {

                        if(super.getResult(RESULT_TRANSPARENCY) == null) {

                                String[] values = new String[rasterResult.getBandCount()];

                                for (int i = 0; i < values.length; i++) {

                                        values[i] = ColorInterpretation.UNDEF_BAND;

                                }

                                ColorInterpretation ci = RasterLocator.getManager().getDataStructFactory().createColorInterpretation(values);

                                transparency.setColorInterpretation(ci);

                                transparency.activeTransparency();

                                return transparency;

                        }

                }

                return super.getResult(name);

        }

        public String getGroup() {

                return "colores";

        }

        public String[] getNames() {

                return names;

        }

        public Params getUIParams(String nameFilter) {

                Params params = new ParamsImpl();

                params.setParam("outputType",

                                new Integer(0),

                                Params.CHOICE,

                                new String[]{ "Byte", "Double"});

                return params;

        }

        public void post() {

        }

        public void process(int x, int y) {

        }

        public int getOutRasterDataType() {

                return Buffer.TYPE_BYTE;

        }

        public boolean isVisible() {

                return true;

        }

        public int getInRasterDataType() {

                return Buffer.TYPE_BYTE;

        }

}