Application: gvSIG desktop

/*

 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.

 *

 * Copyright (C) 2004-5.

 *

 * 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:

 *

 * cresques@gmail.com

 */

package org.cresques.filter;

import java.awt.image.BufferedImage;

/**

 * Renderiza el raster.

 * @author Luis W. Sevilla (sevilla_lui@gva.es)

 */

public class RasterToImageFilter extends RasterFilter {

    private BufferedImage image;

    private int alpha;

    private int rgb;

    /**

     * Constructor

     *

     */

    public RasterToImageFilter() {

    }

    /* (non-Javadoc)

     * @see org.cresques.io.raster.IRasterFilter#pre()

     */

    public void pre() {

        //Obtenemos par?metros

        this.raster = (RasterBuf) params.get("raster");

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

        this.height = raster.getHeight();

        this.width = raster.getWidth();

        this.alpha = (alpha & 0xff) << 24;

        image = new BufferedImage(raster.getWidth(), raster.getHeight(),

                                  BufferedImage.TYPE_INT_ARGB);

    }

    /* (non-Javadoc)

     * @see org.cresques.px.PxRaster.RasterFilter#process(int, int)

     */

    public void process(int x, int y) {

        raster.getElemInt(x, y, px);

        rgb = (alpha & ((px[3] & 0xff) << 24)) | ((px[0] & 0xff) << 16) |

              ((px[1] & 0xff) << 8) | (px[2] & 0xff);

        image.setRGB(x, y, rgb);

    }

    /* (non-Javadoc)

     * @see org.cresques.io.raster.IRasterFilter#getResult(java.lang.String)

     */

    public Object getResult(String name) {

        if (name.equals("raster")) {

            return (Object) image;

        } else {

            return null;

        }

    }

    /* (non-Javadoc)

     * @see org.cresques.px.PxRaster.RasterFilter#processLines(int)

     */

    public void processLine(int y) {

        for (int x = 0; x < width; x++) {

            int[][] line = raster.getLineInt(y);

            rgb = (alpha & ((px[3] & 0xff) << 24)) |

                  ((line[x][0] & 0xff) << 16) | ((line[x][1] & 0xff) << 8) |

                  (line[x][2] & 0xff);

            image.setRGB(x, y, rgb);

        }

    }

    /* (non-Javadoc)

     * @see org.cresques.io.raster.IRasterFilter#getInRasterDataType()

     */

    public int getInRasterDataType() {

        return raster.getDataType();

    }

    /* (non-Javadoc)

     * @see org.cresques.io.raster.IRasterFilter#getOutRasterDataType()

     */

    public int getOutRasterDataType() {

        return RasterBuf.TYPE_IMAGE;

    }

    /* (non-Javadoc)

     * @see org.cresques.io.raster.IRasterFilter#post()

     */

    public void post() {

    }

}