gvsig-raster / org.gvsig.raster / branches / org.gvsig.raster.2.4 / org.gvsig.raster / org.gvsig.raster.gdal / org.gvsig.raster.gdal.provider.legend / src / main / java / org / gvsig / raster / gdal / provider / legend / RasterGdalGetColorTable.java @ 6336
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package org.gvsig.raster.gdal.provider.legend; |
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import java.awt.Color; |
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import java.util.ArrayList; |
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import java.util.List; |
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import org.gdal.gdal.Band; |
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import org.gdal.gdal.Dataset; |
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import org.gvsig.fmap.dal.raster.api.RasterStore; |
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import org.gvsig.raster.gdal.provider.AbstractRasterGdalStoreProvider; |
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import org.gvsig.raster.lib.legend.api.ColorInterpretation; |
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import org.gvsig.raster.lib.legend.api.ColorTable; |
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import org.gvsig.raster.lib.legend.api.ColorTableClass; |
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import org.gvsig.raster.lib.legend.api.RasterLegendLocator; |
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import org.gvsig.raster.lib.legend.api.RasterLegendManager; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DynClass; |
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import org.gvsig.tools.dynobject.DynMethod; |
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import org.gvsig.tools.dynobject.DynObject; |
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import org.gvsig.tools.dynobject.exception.DynMethodException; |
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import org.gvsig.tools.dynobject.exception.DynMethodNotSupportedException; |
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/**
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* Dynamic method to add a get Color Table funcionality
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* @author dmartinezizquierdo
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*
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*/
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public class RasterGdalGetColorTable implements DynMethod { |
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private static Integer code = null; |
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static void register(DynClass storeClass) { |
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if (code != null) { |
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return;
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} |
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code = ToolsLocator.getDynObjectManager() |
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.registerDynMethod(storeClass, new RasterGdalGetColorTable());
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} |
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@Override
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public int getCode() throws DynMethodNotSupportedException { |
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return code;
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} |
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@Override
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public String getDescription() { |
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return "Raster GDAL Color Table"; |
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} |
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@Override
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public String getName() { |
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return RasterStore.DYNMETHOD_GETCOLORTABLE_NAME;
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} |
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@Override
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public Object invoke(DynObject self, Object[] args) |
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throws DynMethodException {
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ColorTable colorTable = null;
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try {
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AbstractRasterGdalStoreProvider rasterGdalProvider=(AbstractRasterGdalStoreProvider)self; |
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RasterLegendManager legendManager=RasterLegendLocator.getRasterLegendManager(); |
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Dataset gdalDataSet = rasterGdalProvider.getGdalDataSet(); |
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ColorInterpretation colorInterpretation =(ColorInterpretation)rasterGdalProvider. |
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invokeDynMethod(RasterStore.DYNMETHOD_GETCOLORINTERPRETATION_NAME, null);
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for (int bandNumber = 1; bandNumber <= gdalDataSet.getRasterCount(); bandNumber++) { |
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//Band in GDAL begins in 1, meanwhile we begin in 0
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int indexColorInterpretation=bandNumber-1; |
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if (ColorInterpretation.PALETTE_BAND.equals(colorInterpretation.get(indexColorInterpretation))){
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Band gdalBand=gdalDataSet.GetRasterBand(bandNumber); |
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org.gdal.gdal.ColorTable gdalBandColorTable = gdalBand.GetColorTable(); |
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if (gdalBandColorTable!=null){ |
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List<ColorTableClass> colorTableClasses=new ArrayList<ColorTableClass>(); |
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for (int i=0;i<gdalBandColorTable.GetCount();i++){ |
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String className=i+""; |
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double value=((byte)i); |
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double interpolation=50.0; |
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Color color=gdalBandColorTable.GetColorEntry(i);
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ColorTableClass colorTableClass = legendManager.createColorTableClass(className, value, interpolation, color); |
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colorTableClasses.add(colorTableClass); |
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} |
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String colorTableName = rasterGdalProvider.getName() + "_color_table"; |
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colorTable = legendManager.createColorTable(colorTableName, |
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colorTableClasses, true);
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//FIXME: De momento devolvemos el primero solo.
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return colorTable;
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} |
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else {
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List<ColorTableClass> colorTableClasses=new ArrayList<ColorTableClass>(); |
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double[] minMax=new double[2]; |
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gdalBand.ComputeRasterMinMax(minMax); |
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Double increment=(minMax[1]-minMax[0])/256; |
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for (int i=0;i<255;i++){ |
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String className=i+""; |
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double value=((minMax[0]+(i*increment))); |
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double interpolation=50.0; |
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int intARGB = ((i & 0xFF) << 24) | // alpha |
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((i & 0xFF) << 16) | // red |
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((i & 0xFF) << 8) | // green |
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((i & 0xFF) << 0); // blue |
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Color color=new Color(intARGB); |
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ColorTableClass colorTableClass = legendManager.createColorTableClass(className, value, interpolation, color); |
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colorTableClasses.add(colorTableClass); |
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} |
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String colorTableName = rasterGdalProvider.getName() + "_color_table"; |
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colorTable = legendManager.createColorTable(colorTableName, |
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colorTableClasses, true);
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//FIXME: De momento devolvemos el primero solo.
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return colorTable;
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} |
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} |
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} |
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} catch (DynMethodNotSupportedException e) {
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//FIXME
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throw new RuntimeException(e); |
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} |
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return null; |
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} |
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@Override
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public Object clone() throws CloneNotSupportedException { |
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return super.clone(); |
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} |
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} |