root / branches / v02_desarrollo / libraries / libCq CMS for java.old / src / org / cresques / io / GeoRasterFile.java @ 1527
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/*
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* Created on 26-abr-2004
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*
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* @author "Luis W. Sevilla" <sevilla_lui@gva.es>
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*/
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package org.cresques.io; |
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import java.awt.Component; |
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import java.awt.Image; |
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import java.awt.image.DataBuffer; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.InvocationTargetException; |
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import java.util.TreeMap; |
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import org.cresques.cts.ICoordTrans; |
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import org.cresques.cts.IProjection; |
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import org.cresques.px.Extent; |
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import org.cresques.px.IObjList; |
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import org.cresques.px.PxContour; |
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import org.cresques.px.PxObjList; |
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/**
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* Manejador de ficheros raster georeferenciados.
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*
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* Esta clase abstracta es el ancestro de todas las clases que proporcionan
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* soporte para ficheros raster georeferenciados.<br>
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* Actua tambien como una 'Fabrica', ocultando al cliente la manera en que
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* se ha implementado ese manejo. Una clase nueva que soportara un nuevo
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* tipo de raster tendr?a que registrar su extensi?n o extensiones usando
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* el m?todo @see registerExtension.<br>
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* @author "Luis W. Sevilla" <sevilla_lui@gva.es>*
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*/
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public abstract class GeoRasterFile extends GeoFile { |
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public static final int RED_BAND = 0x01; |
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public static final int GREEN_BAND = 0x02; |
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public static final int BLUE_BAND = 0x04; |
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/**
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* Filtro para raster.
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* Permite eliminar la franja inutil alrededor de un raster girado o de
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* un mosaico de borde irregular.
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*
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* Funciona bien solo con raster en tonos de gris, porque se basa que
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* el valor del pixel no supere un determinado valor 'umbral' que se
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* le pasa al constructor.
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*
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* Desarrollado para 'limpiar' los bordes de los mosaicos del SIG
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* Oleicola. Para ese caso los par?metros del constructo son:
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* PixelFilter(0x10ffff00, 0xff000000, 0xf0f0f0);
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*
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* @author "Luis W. Sevilla" <sevilla_lui@gva.es>
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*/
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class PixelFilter { |
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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 / 0x1000000);
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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 * 0x1000000;
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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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class SimplePixelFilter extends PixelFilter { |
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public SimplePixelFilter(int alpha) { |
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super(alpha);
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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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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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private static TreeMap supportedExtensions = null; |
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protected Component updatable = null; |
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protected boolean doTransparency = false; |
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//protected int alpha = 0;
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protected PixelFilter tFilter = null; |
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protected int rBandNr = 1, gBandNr = 1, bBandNr = 1; |
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protected int bandCount = 1; |
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private int dataType = DataBuffer.TYPE_BYTE; |
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static {
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supportedExtensions = new TreeMap(); |
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if (System.getProperty("os.name").toUpperCase().startsWith("WIN")) { |
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supportedExtensions.put("ecw", EcwFile.class);
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} |
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supportedExtensions.put("tif", TifGeoRefFile.class);
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supportedExtensions.put("tiff", TifGeoRefFile.class);
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supportedExtensions.put("jpg", TifGeoRefFile.class);
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supportedExtensions.put("png", TifGeoRefFile.class);
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supportedExtensions.put("sid", MrSidFile.class);
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} |
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/**
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* Factoria para abrir distintos tipos de raster.
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*
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* @param proj Proyecci?n en la que est? el raster.
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* @param fName Nombre del fichero.
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* @return GeoRasterFile, o null si hay problemas.
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*/
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public static GeoRasterFile openFile(IProjection proj, String fName) { |
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String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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GeoRasterFile grf = null;
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// TODO NotSupportedExtensionException
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if (!supportedExtensions.containsKey(ext)) return grf; |
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/**/
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Class clase = (Class) supportedExtensions.get(ext); |
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Class [] args = {IProjection.class, String.class}; |
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try {
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Constructor hazNuevo = clase.getConstructor(args);
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Object [] args2 = {proj, fName}; |
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grf = (GeoRasterFile) hazNuevo.newInstance(args2); |
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} catch (SecurityException e) { |
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} catch (NoSuchMethodException e) { |
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} catch (IllegalArgumentException e) { |
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} catch (InstantiationException e) { |
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} catch (IllegalAccessException e) { |
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} catch (InvocationTargetException e) { |
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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}/**/
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/* * /
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if (ext.compareTo("ecw") == 0) {
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grf = new EcwFile(proj, fName);
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} else if (ext.compareTo("tif") == 0 || ext.compareTo("tiff") == 0 || ext.compareTo("jpg") == 0 || ext.compareTo("png") == 0 ) {
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grf = new TifGeoRefFile(proj, fName);
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}/ * */
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return grf;
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} |
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/**
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* Registra una clase que soporta una extensi?n raster.
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* @param ext extensi?n soportada.
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* @param clase clase que la soporta.
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*/
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public static void registerExtension(String ext, Class clase) { |
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ext = ext.toLowerCase(); |
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System.out.println("RASTER: extension '"+ext+"' supported."); |
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supportedExtensions.put(ext, clase); |
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} |
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/**
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* Tipo de fichero soportado.
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* Devuelve true si el tipo de fichero (extension) est? soportado, si no
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* devuelve false.
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*
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* @param fName Fichero raster
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* @return true si est? soportado, si no false.
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*/
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public static boolean fileIsSupported(String fName) { |
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String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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return supportedExtensions.containsKey(ext);
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} |
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public GeoRasterFile(IProjection proj, String name) { |
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super(proj, name);
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} |
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abstract public GeoFile load(); |
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abstract public void close(); |
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public static PxContour getContour(String fName, String name, IProjection proj) { |
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PxContour contour = null;
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return contour;
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} |
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abstract public int getWidth(); |
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abstract public int getHeight(); |
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abstract public void reProject(ICoordTrans rp); |
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abstract public void setView(Extent e); |
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abstract public Extent getView(); |
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// TRANSPARENCIA. Versi?n de pruebas. Hay que verificar que se puede
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// tener filtros y valores alpha, que no es lento, y que no hay una manera
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// mejor de hacerlo.
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//abstract public void setTransparency(boolean t);
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//abstract public void setTransparency(int t);
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public void setTransparency(boolean t) { |
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doTransparency = t; |
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tFilter = new PixelFilter(255); |
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} |
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public void setTransparency(int t ) { |
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doTransparency = true;
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tFilter = new SimplePixelFilter(255 - t); |
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} |
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public boolean getTransparency() { return doTransparency; } |
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public void setAlpha(int alpha) { |
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if (!doTransparency) setTransparency(255 - alpha); |
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else tFilter.setAlpha(alpha);
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} |
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public int getAlpha() { |
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if (tFilter == null) |
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return 255; |
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return tFilter.getAlpha();
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} |
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public void setUpdatable(Component c) { updatable = c; } |
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abstract public Image updateImage(int width, int height, ICoordTrans rp); |
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/**
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* Obtiene el valor del raster en la coordenada que se le pasa.
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* El valor ser? Double, Int, Byte, etc. dependiendo del tipo de
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* raster.
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* @param x coordenada X
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* @param y coordenada Y
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* @return
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*/
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abstract public Object getData(int x, int y, int band); |
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/**
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* Actualiza la/s banda/s especificadas en la imagen.
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* @param width ancho
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* @param height alto
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* @param rp reproyecci?n
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* @param img imagen
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* @param flags que bandas [ RED_BAND | GREEN_BAND | BLUE_BAND ]
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* @return img
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*/
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abstract public Image updateImage(int width, int height, ICoordTrans rp, Image img, int flags); |
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public int getBandCount() { return bandCount; } |
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/**
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* Asocia un colorBand al rojo, verde o azul.
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* @param flag cual (o cuales) de las bandas.
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* @param nBand que colorBand
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*/
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public void setBand(int flag, int bandNr) { |
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if ((flag & GeoRasterFile.RED_BAND) == GeoRasterFile.RED_BAND) rBandNr = bandNr;
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if ((flag & GeoRasterFile.GREEN_BAND) == GeoRasterFile.GREEN_BAND) gBandNr = bandNr;
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if ((flag & GeoRasterFile.BLUE_BAND) == GeoRasterFile.BLUE_BAND) bBandNr = bandNr;
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} |
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/**
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* Devuelve el colorBand activo en la banda especificada.
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* @param flag banda.
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*/
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public int getBand(int flag) { |
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if (flag == GeoRasterFile.RED_BAND) return rBandNr; |
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if (flag == GeoRasterFile.GREEN_BAND) return gBandNr; |
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if (flag == GeoRasterFile.BLUE_BAND) return bBandNr; |
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return -1; |
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} |
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/**
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* @return Returns the dataType.
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*/
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public int getDataType() { |
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return dataType;
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} |
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/**
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* @param dataType The dataType to set.
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*/
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public void setDataType(int dataType) { |
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this.dataType = dataType;
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} |
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public IObjList getObjects() {
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// TODO hay que a?adir el raster a la lista de objetos
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IObjList oList = new PxObjList(proj);
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return oList;
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} |
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} |