svn-gvsig-desktop / trunk / libraries / libCq CMS for java.old / src / org / cresques / io / GeoRasterFile.java @ 77
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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.Image; |
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import org.cresques.geo.Projection; |
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import org.cresques.geo.ReProjection; |
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import org.cresques.px.Extent; |
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import org.cresques.px.PxContour; |
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import java.io.File; |
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/**
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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 abstract class GeoRasterFile extends GeoFile { |
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/**
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* Factoria para abrir distintos tipos de raster
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* @param fName
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* @return
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*/
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public static GeoRasterFile openFile(Projection proj, String fName) { |
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String ext = fName.toLowerCase().substring(fName.lastIndexOf('.')+1); |
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// Copiado de WorldFile
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int lengthExtension = fName.length() - fName.lastIndexOf('.'); |
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int l = fName.length(), le = lengthExtension-1; |
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String wfExt = "."+fName.substring(l-le,l-(le-1))+fName.substring(l-1)+"w"; // ".tfw" |
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String wfName = fName.substring(0, fName.length()-lengthExtension) + wfExt; |
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File file = new File(wfName); |
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if (ext.compareTo("ecw") == 0) { |
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return 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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// Si la imagen TIFF no lleva un fichero TFW asociado, el programa
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// entiende que se trata de una imagen en formato GeoTiff. La
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// aproximacion es correcta siempre que manejemos informacion
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// georeferenciada, puesto que cualquier TIFF Georeferenciado llevara
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// su correspondiente fichero TFW y si no lo lleva no sera una imagen
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// georeferenciada valida.
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// Para no meter la pata al contemplar TIFFs sin georeferenciar
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// debemos contemplar esta alternativa dentro de la categoria de los
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// GeoTiffs.
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if (!file.exists()) {
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return new GeoTiffFile(proj, fName); |
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} else {
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return new TifGeoRefFile(proj, fName); |
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} |
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} |
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return (GeoRasterFile) null; |
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} |
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public GeoRasterFile(Projection proj, String name) { |
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super(proj, name);
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} |
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public static PxContour getContour(String fName, String name, Projection proj) { |
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PxContour contour = null;
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return contour;
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} |
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abstract public void reProject(ReProjection rp); |
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abstract public GeoFile load(); |
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abstract public void setView(Extent e); |
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abstract public Extent getView(); |
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abstract public void setTransparency(boolean t); |
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abstract public Image updateImage(int width, int height, ReProjection rp); |
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} |