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svn-gvsig-desktop / branches / CqCMSDvp / libraries / libCq CMS for java.old / src / org / cresques / io / raster / PixelFilter.java @ 2312

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/*
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 * Cresques Mapping Suite. Graphic Library for constructing mapping applications.
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 * 
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 * Copyright (C) 2004-5. 
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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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 * 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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 * 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., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.
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 *
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 * For more information, contact:
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 * 
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 * cresques@gmail.com
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 */
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package org.cresques.io.raster;
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/**
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 * @author Luis W. Sevilla (sevilla_lui@gva.es)
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 */
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public class PixelFilter {
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        public boolean debug = false;
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        int transparente = 0x10ffff00;
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        int orColor = 0xff000000;
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        int umbral = 0xf0f0f0;
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        private int alpha = 0xff;
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        /**
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         * Constructor para el Oleico
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         */
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        public PixelFilter(int alpha) {
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                transparente = 0x10ffff00;
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                setAlpha(alpha);
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                //orColor = 0xff000000 | (alpha * 0x1000000);
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                umbral = 0xf0f0f0;
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        }
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        /**
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         * Constructor.
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         * 
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         * @param trans Color que sustituye a los pixeles filtrados
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         * @param or        M?scara que se aplica a los pixeles restantes
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         * @param pxMax        Umbral que determina los pixeles.
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         */
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        public PixelFilter(int trans, int or, int pxMax) {
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                transparente = trans;
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                setAlpha( (orColor >> 24) & 0xff);
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                orColor = or;
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                umbral = pxMax;
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        }
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        public void setAlpha(int alpha) {
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                this.alpha = alpha;
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                orColor = (alpha << 24) & 0xff000000;
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        }
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        public int getAlpha() { return alpha; }
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        /**
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         * Filtra una l?nea de pixeles.
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         * 
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         * @param pRGBArray
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         */
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        public void filterLine(int [] pRGBArray) {
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                for (int i=0; i<pRGBArray.length; i++) {
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                        /*if (debug)
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                                System.out.print(""+i+":"+Integer.toHexString(pRGBArray[i])+",");*/
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                        if (pRGBArray[i]  >= umbral)
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                                pRGBArray[i] = transparente;
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                        else
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                                pRGBArray[i] |= orColor;
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                }
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                /*if (debug)
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                        System.out.println("");*/
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        }
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}
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