Application: gvSIG desktop

/*

 * Created on 26-abr-2004

 */

package org.cresques.io.raster;

/**

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

 */

public class PixelFilter {

        public boolean debug = false;

        int transparente = 0x10ffff00;

        int orColor = 0xff000000;

        int umbral = 0xf0f0f0;

        private int alpha = 0xff;

        /**

         * Constructor para el Oleico

         */

        public PixelFilter(int alpha) {

                transparente = 0x10ffff00;

                setAlpha(alpha);

                //orColor = 0xff000000 | (alpha * 0x1000000);

                umbral = 0xf0f0f0;

        }

        /**

         * Constructor.

         * 

         * @param trans Color que sustituye a los pixeles filtrados

         * @param or        M?scara que se aplica a los pixeles restantes

         * @param pxMax        Umbral que determina los pixeles.

         */

        public PixelFilter(int trans, int or, int pxMax) {

                transparente = trans;

                setAlpha( (orColor >> 24) & 0xff);

                orColor = or;

                umbral = pxMax;

        }

        public void setAlpha(int alpha) {

                this.alpha = alpha;

                orColor = (alpha << 24) & 0xff000000;

        }

        public int getAlpha() { return alpha; }

        /**

         * Filtra una l?nea de pixeles.

         * 

         * @param pRGBArray

         */

        public void filterLine(int [] pRGBArray) {

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

                        /*if (debug)

                                System.out.print(""+i+":"+Integer.toHexString(pRGBArray[i])+",");*/

                        if (pRGBArray[i]  >= umbral)

                                pRGBArray[i] = transparente;

                        else

                                pRGBArray[i] |= orColor;

                }

                /*if (debug)

                        System.out.println("");*/

        }

}