Revision 2669 branches/CqCMSDvp/libraries/libCq CMS for java.old/src/org/cresques/io/raster/TransparencyImageFilter.java
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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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* 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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* 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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* |
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* cresques@gmail.com |
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*/ |
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package org.cresques.io.raster; |
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import java.awt.Image; |
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import java.awt.image.BufferedImage; |
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/** |
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* Filtro de transparencia aplicada a un rango de valores de un pixel sobre un objeto image |
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* @author Nacho Brodin (brodin_ign@gva.es) |
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*
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* |
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*/ |
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public class TransparencyImageFilter extends TransparencyFilter {
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public class TransparencyImageFilter extends TransparencyFilter {
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/** |
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* Constructor |
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* |
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*/ |
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public TransparencyImageFilter() {
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super(); |
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} |
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/** |
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* Constructor |
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* |
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*/ |
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public TransparencyImageFilter(){
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super(); |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#pre() |
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*/ |
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public void pre(){
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//Obtenci?n de par?metros |
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this.image = (Image)params.get("raster");
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height = image.getHeight(null); |
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width = image.getWidth(null); |
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super.pre(); |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#pre() |
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*/ |
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public void pre() {
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//Obtenci?n de par?metros |
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this.image = (Image) params.get("raster");
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height = image.getHeight(null); |
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width = image.getWidth(null); |
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super.pre(); |
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} |
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/** |
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* Dado un pixel y un rango, asigna ese pixel al color de transparencia por |
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* defecto si el pixel en una banda determinada est? en el rango definido. |
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* @param range rango |
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* @param banda banda |
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* @param px pixel |
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*/ |
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private void processRange(int[][] range, int banda, int[] px){
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for(int i=0;i<range.length;i++){
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if( (px[banda] >= range[i][0] && px[banda] <= range[i][1]) ){
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px[0] = this.alpha; |
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px[1] = this.transparencyColorRed; |
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px[2] = this.transparencyColorGreen; |
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px[3] = this.transparencyColorBlue; |
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} |
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} |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#process(int, int) |
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*/ |
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public void process(int x, int y) {
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int pt = ((BufferedImage) image).getRGB(x,y); |
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int []px4 = {(pt & 0xff000000) >> 24,(pt & 0xff0000) >> 16, (pt & 0x00ff00) >> 8, (pt & 0x0000ff)};
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if(rangesR!=null) |
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processRange(rangesR, 1, px4); |
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if(rangesG!=null) |
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processRange(rangesG, 2, px4); |
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if(rangesB!=null) |
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processRange(rangesB, 3, px4); |
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((BufferedImage) image).setRGB(x,y, ( |
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(px4[0] << 24) & 0xff000000 | (px4[1] << 16) & 0x00ff0000 | |
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(px4[2] << 8) & 0x0000ff00 | (px4[3] & 0x0000ff) )); |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#getInRasterDataType() |
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*/ |
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public int getInRasterDataType(){
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return RasterBuf.TYPE_IMAGE; |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#getOutRasterDataType() |
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*/ |
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public int getOutRasterDataType(){
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return RasterBuf.TYPE_IMAGE; |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#getResult(java.lang.String) |
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*/ |
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public Object getResult(String name){
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if(name.equals("raster"))
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return (Object)this.image; |
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else |
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return null; |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.RasterFilter#processLine(int) |
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*/ |
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public void processLine(int y){};
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#post() |
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*/ |
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public void post(){}
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} |
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/** |
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* Dado un pixel y un rango, asigna ese pixel al color de transparencia por |
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* defecto si el pixel en una banda determinada est? en el rango definido. |
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* @param range rango |
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* @param banda banda |
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* @param px pixel |
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*/ |
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private void processRange(int[][] range, int banda, int[] px) {
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for (int i = 0; i < range.length; i++) {
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if (((px[banda] >= range[i][0]) && (px[banda] <= range[i][1]))) {
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px[0] = this.alpha; |
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px[1] = this.transparencyColorRed; |
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px[2] = this.transparencyColorGreen; |
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px[3] = this.transparencyColorBlue; |
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} |
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} |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#process(int, int) |
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*/ |
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public void process(int x, int y) {
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int pt = ((BufferedImage) image).getRGB(x, y); |
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int[] px4 = {
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(pt & 0xff000000) >> 24, (pt & 0xff0000) >> 16, |
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(pt & 0x00ff00) >> 8, (pt & 0x0000ff) |
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}; |
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if (rangesR != null) {
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processRange(rangesR, 1, px4); |
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} |
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if (rangesG != null) {
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processRange(rangesG, 2, px4); |
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} |
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if (rangesB != null) {
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processRange(rangesB, 3, px4); |
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} |
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((BufferedImage) image).setRGB(x, y, |
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(((px4[0] << 24) & 0xff000000) | |
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((px4[1] << 16) & 0x00ff0000) | |
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((px4[2] << 8) & 0x0000ff00) | |
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(px4[3] & 0x0000ff))); |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#getInRasterDataType() |
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*/ |
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public int getInRasterDataType() {
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return RasterBuf.TYPE_IMAGE; |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#getOutRasterDataType() |
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*/ |
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public int getOutRasterDataType() {
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return RasterBuf.TYPE_IMAGE; |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#getResult(java.lang.String) |
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*/ |
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public Object getResult(String name) {
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if (name.equals("raster")) {
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return (Object) this.image; |
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} else {
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return null; |
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} |
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.RasterFilter#processLine(int) |
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*/ |
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public void processLine(int y) {
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} |
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/* (non-Javadoc) |
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* @see org.cresques.io.raster.IRasterFilter#post() |
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*/ |
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public void post() {
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} |
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} |
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