svn-gvsig-desktop / tags / v1_1_Build_1000 / libraries / libCq_CMS_praster / src / org / cresques / io / datastruct / Palette.java @ 11885
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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.datastruct; |
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import org.cresques.io.data.RasterBuf; |
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import org.cresques.util.Utilities; |
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import es.gva.cit.jgdal.GdalColorEntry; |
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import es.gva.cit.jgdal.GdalColorTable; |
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import es.gva.cit.jgdal.GdalException; |
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/**
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* Paleta para raster. Esta consta de los valores RGB de la paleta que son almacenados en un vector de
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* enteros donde cada elemento entero contiene en su interior el RGB completo y del vector de rangos.
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* Dependiendo de si el tipo de rango es entero o decimal este estar? almacenado en un vector de rangos
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* entero (intRange) o enun vector de rangos double (doubleRange). El tipo de dato del rango quedar?
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* almacenado en la variable type.
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* @author Nacho Brodin (brodin_ign@gva.es)
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*/
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public class Palette{ |
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/**
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* Tipo de dato de la paleta
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* <UL>
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* <LI>TYPE_INT = Valido para byte, short e int</LI>
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* <LI>TYPE_DOUBLE = Valido para float y double</LI>
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* </UL>
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*/
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private int type = RasterBuf.TYPE_UNDEFINED; |
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/**
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* Lista de rangos para paletas enteras
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*/
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private int[] intRange = null; |
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/**
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* Lista de rangos para paletas decimales
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*/
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private double[] doubleRange = null; |
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/**
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* Lista de valores RGB
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*/
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private int[] palette = null; |
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/**
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* Heuristica para paletas enteras. Esta heuristica simple consiste en el valor
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* intermedio de la tabla, de esta forma reduce la tabla a la mitad.
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*/
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private int intHeuristica = Integer.MAX_VALUE; |
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/**
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* Heuristica para paletas decimales. Esta heuristica simple consiste en el valor
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* intermedio de la tabla, de esta forma reduce la tabla a la mitad.
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*/
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private double doubleHeuristica = Double.MAX_VALUE; |
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/**
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* Nombre de la clase asociada a la entrada
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*/
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private String[] nameClass = null; |
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private String name = null; |
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public Palette(){}
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/**
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* Constructor. Asigna el nombre de la paleta.
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* @param name
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*/
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public Palette(String name){ |
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this.name = name;
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} |
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/**
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* Asigna el nombre de la paleta
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* @param Nombre de la paleta
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*/
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public void addName(String name){ |
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this.name = name;
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} |
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/**
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* Obtiene el nombre de la paleta
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* @return Nombre de la paleta
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*/
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public String getName(){ |
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return name;
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} |
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/**
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* Obtiene el valor RGB interpolado para un clave entera pasada por par?metro
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* @param value clave de la cual se quiere obtener el valor RGB de la paleta
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* @return valor RGB
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*/
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public int getInterpolateRGB2(double value){ |
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int maxGrad = 127; |
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int init = 1; |
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int color = 0; |
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double beginValue = 0; |
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double nextValue = 0; |
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for(int i = init; i <= doubleRange.length; i++){ |
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if(i < doubleRange.length){
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if(value > doubleRange[i]){
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color = palette[i - 1];
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beginValue = doubleRange[i - 1];
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nextValue = doubleRange[i]; |
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break;
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} |
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}else{
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color = palette[i - 1];
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beginValue = doubleRange[i - 1];
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nextValue = 0;
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break;
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} |
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} |
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int[] colorBegin = Utilities.getARGBFromIntToIntArray(color); |
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int max = Math.max(Math.max(colorBegin[0], colorBegin[1]), colorBegin[2]); |
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double distance = Math.abs(beginValue - nextValue); |
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double absValue = Math.abs(value - nextValue); |
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int newBand = 0; |
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if(distance != 0) |
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newBand = (int)Math.round((absValue * maxGrad) / distance); |
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int[] res = new int[3]; |
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if((max + maxGrad) > 255){ |
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for(int i = 0; i < 3; i++) |
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if(colorBegin[i] == max){
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res[i] = max - newBand; |
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break;
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}else
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res[i] = colorBegin[i]; |
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}else{
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for(int i = 0; i < 3; i++) |
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if(colorBegin[i] == max){
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res[i] = max + newBand; |
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break;
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}else
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res[i] = colorBegin[i]; |
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} |
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return Utilities.getIntFromARGB(colorBegin[3], res[0], res[1], res[2]); |
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} |
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/**
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* Obtiene el valor RGB interpolado para un clave entera pasada por par?metro
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* @param value clave de la cual se quiere obtener el valor RGB de la paleta
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* @return valor RGB
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*/
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public int getInterpolateRGB2(int value){ |
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int maxGrad = 127; |
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int init = 1; |
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int color = 0; |
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int beginValue = 0; |
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int nextValue = 0; |
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for(int i = init; i <= intRange.length; i++){ |
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if(i < intRange.length){
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if(value > intRange[i]){
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color = palette[i - 1];
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beginValue = intRange[i - 1];
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nextValue = intRange[i]; |
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break;
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} |
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}else{
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color = palette[i - 1];
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beginValue = intRange[i - 1];
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nextValue = 0;
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break;
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} |
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} |
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int[] colorBegin = Utilities.getARGBFromIntToIntArray(color); |
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int max = Math.max(Math.max(colorBegin[0], colorBegin[1]), colorBegin[2]); |
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int distance = Math.abs(beginValue - nextValue); |
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int absValue = Math.abs(value - nextValue); |
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int newBand = 0; |
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if(distance != 0) |
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newBand = (absValue * maxGrad) / distance; |
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int[] res = new int[3]; |
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if((max + maxGrad) > 255){ |
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for(int i = 0; i < 3; i++) |
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if(colorBegin[i] == max){
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res[i] = max - newBand; |
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break;
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}else
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res[i] = colorBegin[i]; |
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}else{
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for(int i = 0; i < 3; i++) |
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if(colorBegin[i] == max){
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res[i] = max + newBand; |
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break;
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}else
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res[i] = colorBegin[i]; |
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} |
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return Utilities.getIntFromARGB(colorBegin[3], res[0], res[1], res[2]); |
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} |
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/**
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* Obtiene el valor RGB interpolado para un clave entera pasada por par?metro
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* @param value clave de la cual se quiere obtener el valor RGB de la paleta
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* @return valor RGB
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*/
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public int getInterpolateRGB(int value){ |
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int init = 1; |
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int color = 0; |
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int beginValue = 0; |
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int nextValue = 0; |
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int nextColor = 0; |
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for(int i = init; i <= intRange.length; i++){ |
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if(i < intRange.length){
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if(value > intRange[i]){
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color = palette[i - 1];
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beginValue = intRange[i - 1];
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nextValue = intRange[i]; |
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nextColor = palette[i]; |
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break;
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} |
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}else{
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color = palette[i - 1];
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beginValue = intRange[i - 1];
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nextValue = intRange[0];
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nextColor = palette[0];
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break;
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} |
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} |
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int[] colorBegin = Utilities.getARGBFromIntToIntArray(color); |
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int[] colorEnd = Utilities.getARGBFromIntToIntArray(nextColor); |
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int dif = Math.abs(beginValue - nextValue); |
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double difR = Math.abs(colorBegin[0] - colorEnd[0]) / (double)dif; |
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double difG = Math.abs(colorBegin[1] - colorEnd[1]) / (double)dif; |
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double difB = Math.abs(colorBegin[2] - colorEnd[2]) / (double)dif; |
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int[] res = new int[3]; |
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res[0] = (int)(colorBegin[0] + difR * (value - colorBegin[0])); |
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res[1] = (int)(colorBegin[1] + difG * (value - colorBegin[1])); |
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res[2] = (int)(colorBegin[2] + difB * (value - colorBegin[2])); |
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return Utilities.getIntFromARGB(colorBegin[3], res[0], res[1], res[2]); |
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} |
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/**
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* Obtiene el valor RGB para un clave entera pasada por par?metro
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* @param value clave de la cual se quiere obtener el valor RGB de la paleta
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* @return valor RGB
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*/
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public int getRGB(int value){ |
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int init = 1; |
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/*if(value > intHeuristica)
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init = intRange.length >> 1;*/
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for(int i = init; i <= intRange.length; i++) |
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if(i < intRange.length){
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if(value > intRange[i])
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return palette[i - 1]; |
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}else{
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return palette[i - 1]; |
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} |
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return 0; |
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} |
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/**
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* Obtiene el valor RGB para un clave decimal pasada por par?metro
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* @param value clave de la cual se quiere obtener el valor RGB de la paleta
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* @return valor RGB
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*/
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public int getRGB(double value){ |
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int init = 1; |
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/*if(value > doubleHeuristica)
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init = doubleRange.length >> 1;*/
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for(int i = init; i <= doubleRange.length; i++) |
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if(i < doubleRange.length){
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if(value > doubleRange[i])
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return palette[i - 1]; |
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}else{
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return palette[i - 1]; |
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} |
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return 0; |
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} |
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/**
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* Genera una paleta a partir de una tabla de entradas de la forma
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* <UL>
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* <LI>(String) Nombre de la clase</LI>
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* <LI>(Integer) Rojo</LI>
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* <LI>(Integer) Verde</LI>
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* <LI>(Integer) Azul</LI>
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* <LI>(Double) Valor</LI>
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* </UL>
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* @param entries
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*/
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public void createPaletteFromTable(Object[][] entries, int type){ |
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this.type = type;
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nameClass = new String[entries.length]; |
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palette = new int[entries.length]; |
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if(type <= RasterBuf.TYPE_INT){
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intRange = new int[entries.length]; |
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intHeuristica = (int)((Double)entries[(entries.length >> 1)][4]).doubleValue(); |
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}else{
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doubleRange = new double[entries.length]; |
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doubleHeuristica = ((Double)entries[(entries.length >> 1)][4]).doubleValue(); |
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} |
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for(int entry = 0; entry < entries.length; entry++){ |
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//palette[entry] = 0xff000000;
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for(int value = 0; value < entries[entry].length; value++){ |
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switch(value){
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case 0: nameClass[entry] = (String)entries[entry][value]; |
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break;
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case 1: palette[entry] |= ((((Integer)entries[entry][value]).intValue() & 0x000000ff) << 16); |
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break;
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case 2: palette[entry] |= ((((Integer)entries[entry][value]).intValue() & 0x000000ff) << 8); |
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break;
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case 3: palette[entry] |= (((Integer)entries[entry][value]).intValue() & 0x000000ff); |
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break;
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case 4: if(type <= RasterBuf.TYPE_INT) |
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intRange[entry] = ((Double)entries[entry][value]).intValue();
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else
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doubleRange[entry] = ((Double)entries[entry][value]).doubleValue();
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break;
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case 5: palette[entry] |= ((((Integer)entries[entry][value]).intValue() & 0x000000ff) << 24); |
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break;
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} |
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} |
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} |
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} |
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/**
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* Crea una paleta a partir de un objeto GdalColorTable. Esto es necesario para los ficheros
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* que tienen un paleta asignada, como los gif, y que son tratados por Gdal. Se pasa la tabla
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* de color le?da desde gdal y se crea directamente un objeto Palette.
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* @param table
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*/
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public void createPaletteFromGdalColorTable(GdalColorTable table){ |
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try{
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type = RasterBuf.TYPE_BYTE; |
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nameClass = new String[table.getColorEntryCount()]; |
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palette = new int[table.getColorEntryCount()]; |
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intRange = new int[table.getColorEntryCount()]; |
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int cont = table.getColorEntryCount() - 1; |
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for(int iEntry = 0; iEntry < table.getColorEntryCount(); iEntry++){ |
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GdalColorEntry entry = table.getColorEntryAsRGB(iEntry); |
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nameClass[cont] = "";
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palette[cont] = 0x00000000;
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palette[cont] |= ((entry.c4 & 0x000000ff) << 24); |
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palette[cont] |= ((entry.c1 & 0x000000ff) << 16); |
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palette[cont] |= ((entry.c2 & 0x000000ff) << 8); |
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palette[cont] |= (entry.c3 & 0x000000ff);
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intRange[cont] = iEntry; |
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cont --; |
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} |
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}catch(GdalException ex){
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//No se crea la paleta
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} |
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} |
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/**
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* Carga una paleta desde un fichero XML
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* @param file nombre del fichero
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* @param palette Nombre de la paleta
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*/
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public void loadPaletteFromXML(String file, String palette){ |
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//TODO: Implemetar cargar paleta desde el directorio gvSIG
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} |
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/**
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* Carga una paleta desde el fichero .rmf asociado a la imagen
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* @param file nombre del fichero de imagen
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*/
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public void loadPaletteFromRMF(String file){ |
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//TODO: Implemetar cargar paleta desde .rmf
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} |
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/**
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* Salva una paleta desde al fichero .rmf asociado a la imagen
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* @param file nombre del fichero de imagen
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*/
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public void savePaletteToRMF(String file){ |
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//TODO: Implemetar salvar paleta a .rmf
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} |
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/**
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* Obtiene la paleta
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* @return Paleta
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*/
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public int[] getPalette() { |
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return palette;
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} |
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|
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/**
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* Asigna una paleta
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* @param palette Paleta
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*/
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public void setPalette(int[] palette) { |
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this.palette = palette;
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} |
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|
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/**
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* Obtiene el tipo del rango de la paleta que corresponde con los tipos de rasterBuf
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* @return Tipo de rango, entero o double
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*/
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public int getType() { |
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return type;
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} |
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|
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/**
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* Asigna el tipo del rango de la paleta que corresponde con los tipos de rasterBuf
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* @param Tipo de rango, entero o double
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*/
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public void setType(int type) { |
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this.type = type;
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} |
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|
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/**
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* Asigna los rangos si el tipo es decimal
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* @param rangos
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*/
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public void setDoubleRange(double[] value) { |
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doubleRange = value; |
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} |
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|
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/**
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* Asigna los rangos si el tipo es entero
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* @param values
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*/
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public void setIntRange(int[] values) { |
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intRange = values; |
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} |
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|
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/**
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* Obtiene los rangos si el tipo es decimal
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* @return rangos
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*/
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public double[] getDoubleRange() { |
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return doubleRange;
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} |
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|
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/**
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* Obtiene los rangos si el tipo es entero
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* @return rangos
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*/
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public int[] getIntRange() { |
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return intRange;
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} |
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|
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|
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/**
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* Obtiene los nombres de las clases de la paleta
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* @return Array de cadenas. Cada una corresponde con un nombre de clase
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* que corresponde a cada rango de tipos.
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*/
|
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public String[] getNameClass() { |
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return nameClass;
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} |
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|
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/**
|
| 480 |
* Asigna los nombres de las clases de la paleta
|
| 481 |
* @param names Array de cadenas. Cada una corresponde con un nombre de clase
|
| 482 |
* que corresponde a cada rango de tipos.
|
| 483 |
*/
|
| 484 |
public void setNameClass(String[] names) { |
| 485 |
nameClass = names; |
| 486 |
} |
| 487 |
|
| 488 |
|
| 489 |
} |