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.tools.app.basic.tool.filter.regionalpha;

import java.util.ArrayList;

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

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

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

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.fmap.mapcontext.layers.FLayer;

import org.gvsig.raster.fmap.layers.FLyrRaster;

import org.gvsig.raster.roi.ROI;

/**

 * 

 * @author BorSanZa - Borja S?nchez Zamorano 

 */

public class RegionAlphaFilter extends BaseRasterFilter {

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

        private RegionAlphaUI      regionAlphaUI   = null;

        protected ArrayList<ROI>   rois            = null;

        protected int              alpha           = 255;

        protected boolean          inverse         = false;

        /* Variables que hacen falta en el process */

        protected double           cellsize        = 0D;

        protected Extent           bufferExtent     = null;

        /**

         * Constructor

         */

        public RegionAlphaFilter() {

                super();

                setName(names[0]);

        }

        public String getGroup() {

                return "mascaras";

        }

        public String[] getNames() {

                return names;

        }

        public Params getUIParams(String nameFilter) {

                Params params = RasterLocator.getManager().createParams(

                                "Panel", getRegionAlphaUI(), -1, null);

                params.setParam("FilterName", nameFilter, -1, null);

                params.setParam("Alpha",

                                new Integer(alpha),

                                Params.SLIDER,

                                new String[]{ "0", "255", "0", "1", "25" }); //min, max, valor defecto, intervalo peque?o, intervalo grande;

                return params;

        }

        private RegionAlphaUI getRegionAlphaUI() {

                if (regionAlphaUI == null) {

                        regionAlphaUI = new RegionAlphaUI();

                        FLayer raster = (FLayer) getEnv().get("initRaster");

                        regionAlphaUI.setRois(rois);

                        if(raster instanceof FLyrRaster)

                                regionAlphaUI.setLayer((FLyrRaster)raster);

                }

                return regionAlphaUI;

        }

        @SuppressWarnings("unchecked")

        public void pre() throws FilterAddException {

                super.pre();

                Boolean inverseBoolean = (Boolean) params.get("inverse");

                if (inverseBoolean != null)

                        inverse = inverseBoolean.booleanValue();

                rois = (ArrayList<ROI>) params.get("rois");

                alpha = ((Integer) params.get("alpha")).intValue();

                if(raster.getDataExtent() == null)

                        throw new FilterAddException("Buffer extension cannot be null");

                bufferExtent = RasterLocator.getManager().getDataStructFactory().createExtent(raster.getDataExtent());

                cellsize = raster.getDataExtent().getWidth() / raster.getWidth();

                if(hasInputTransparency())

                        createBufferResult(raster.getDataType(), raster.getBandCount());

                else

                        createBufferResult(raster.getDataType(), raster.getBandCount() + 1);

        }

        /**

         * Gets the result of this filter

         */

        public Object getResult(String name) {

                if (name.equals(RESULT_TRANSPARENCY)) {

                        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);

                        ci.setColorInterpValue(rasterResult.getBandCount() - 1, ColorInterpretation.ALPHA_BAND);

                        transparency.setColorInterpretation(ci);

                        transparency.activeTransparency();

                        return transparency;

                }

                return super.getResult(name);

        }

        public void post() {

        }

        public void process(int x, int y) {

        }

        public int getInRasterDataType() {

                return Buffer.TYPE_BYTE;

        }

        public int getOutRasterDataType() {

                return Buffer.TYPE_BYTE;

        }

}