gvsig-raster / org.gvsig.raster / tags / 2.0.0 / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / grid / render / ImageDrawerImpl.java @ 1708
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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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., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.impl.grid.render; |
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import java.awt.Image; |
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import java.awt.image.BufferedImage; |
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import org.gvsig.fmap.dal.coverage.RasterLocator; |
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import org.gvsig.fmap.dal.coverage.dataset.Buffer; |
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import org.gvsig.fmap.dal.coverage.datastruct.Extent; |
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import org.gvsig.fmap.dal.coverage.exception.FileNotOpenException; |
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import org.gvsig.fmap.dal.coverage.exception.FilterTypeException; |
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import org.gvsig.fmap.dal.coverage.exception.ProcessInterruptedException; |
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import org.gvsig.fmap.dal.coverage.exception.RasterDriverException; |
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import org.gvsig.fmap.dal.coverage.grid.RasterFilterList; |
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import org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer; |
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import org.gvsig.fmap.dal.coverage.store.props.Statistics; |
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import org.gvsig.fmap.dal.coverage.store.props.Transparency; |
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import org.gvsig.raster.impl.DefaultRasterManager; |
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import org.gvsig.raster.impl.buffer.RasterBuffer; |
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import org.gvsig.raster.impl.grid.filter.enhancement.DefaultLinearStretchParams; |
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import org.gvsig.raster.impl.grid.filter.enhancement.EnhancementStretchListManager; |
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import org.gvsig.raster.impl.process.RasterTask; |
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import org.gvsig.raster.impl.process.RasterTaskQueue; |
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import org.slf4j.LoggerFactory; |
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/**
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* Objeto para la escritura de datos desde un buffer a un objeto Image. En este nivel de
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* renderizado no se gestiona extents, ni rotaciones ni coordenadas del mundo, solo la
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* escritura desde un buffer hasta otro de tama?o dado. Por medio de par?metros y de objetos
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* de estado varia el resultado de la escritura, selecci?n de bandas a escribir desde el buffer
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* a RGB, transparencias aplicadas o paletas.
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*
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class ImageDrawerImpl implements ImageDrawer { |
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private Buffer rasterBuf = null; |
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private double[] step = null; |
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private int width = -1; |
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private int height = -1; |
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private double scaleX = 1; //rate between input and output buffer |
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private double scaleY = 1; |
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private Transparency transparency = null; |
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public ImageDrawerImpl() {
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#setLastTransparency(org.gvsig.fmap.dal.coverage.store.props.Transparency)
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*/
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public void setLastTransparency(Transparency t) { |
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this.transparency = t;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#drawBufferOverImageObject()
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*/
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public Image drawBufferOverImageObject() throws ProcessInterruptedException { |
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if (rasterBuf == null) |
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return null; |
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try { // Temporal para la traza de un error aleatorio |
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boolean supersamplingOn = false; |
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BufferedImage image = null; |
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if(width <= 0 && height <= 0) { |
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width = rasterBuf.getWidth(); |
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height = rasterBuf.getHeight(); |
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scaleX = scaleY = 1;
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} else {
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scaleX = rasterBuf.getWidth() / width; |
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scaleY = rasterBuf.getHeight() / height; |
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} |
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image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB); |
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if(step != null) { |
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supersamplingOn = true;
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} |
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if (rasterBuf.getDataType() != Buffer.TYPE_BYTE) |
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rasterBuf = convertToByte(rasterBuf); |
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byte[] data = new byte[rasterBuf.getBandCount()]; |
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if (transparency != null && transparency.isTransparencyActive()) { |
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if (transparency.existAlphaBand() &&
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transparency.getAlphaBand() != null &&
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transparency.getAlphaBand().getDataType() != Buffer.TYPE_BYTE) {
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transparency.setAlphaBand(convertToByte(transparency.getAlphaBand())); |
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} |
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drawWithTransparency(image, data, supersamplingOn, transparency); |
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} else
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drawByte(image, data, supersamplingOn); |
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step = null;
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return image;
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} catch (OutOfMemoryError error) { // Temporal para la traza de un error |
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// aleatorio
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LoggerFactory.getLogger(this.getClass()).debug(
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"Buffer: " + rasterBuf.getWidth() + " " + rasterBuf.getHeight() , error); |
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} |
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return null; |
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} |
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/**
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* Calcula los vectores de desplazamiento en pixels en X e Y cuando se supersamplea.
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* @param r Array de desplazamientos para las filas. Debe tener espacio reservado
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* @param c Array de desplazamientos para las columnas. Debe tener espacio reservado
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* cargados.
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*/
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private void calcSupersamplingStepsArrays(int[] r, int[] c) { |
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double pos = step[1]; |
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for(int row = 0; row < r.length; row ++) { |
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r[row] = (int)(pos / step[3]); |
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pos ++; |
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} |
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pos = step[0];
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for(int col = 0; col < c.length; col ++) { |
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c[col] = (int)(pos / step[2]); |
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pos ++; |
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} |
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} |
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/**
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* Dibuja un raster sobre un BufferedImage
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* @param image BufferedImage sobre el que se dibuja
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* @param data buffer vacio. Se trata de un array de bytes donde cada elemento representa una banda.
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* @param supersampling true si se necesita supersamplear y false si no se necesita
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* @throws ProcessInterruptedException
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*/
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private void drawByte(BufferedImage image, byte[] data, boolean supersampling) throws ProcessInterruptedException { |
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RasterTask task = RasterTaskQueue.get(Thread.currentThread().getId() + ""); |
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try {
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if (supersampling) {
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int[] r = new int[height]; |
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int[] c = new int[width]; |
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calcSupersamplingStepsArrays(r, c); |
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for (int row = 0; row < height; row++) { |
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for (int col = 0; col < width; col++) |
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try {
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rasterBuf.getElemByte(r[row], c[col], data); |
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image.setRGB(col, row, (0xff000000 + ((data[0] & 0xff) << 16) |
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+ ((data[1] & 0xff) << 8) + (data[2] & 0xff))); |
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} catch (ArrayIndexOutOfBoundsException e) { |
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System.err.println("== Size Image:" + image.getWidth() + " " + image.getHeight()); |
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System.err.println("== Position required:" + col + " " + row); |
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break;
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} |
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if (task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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} else {
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/*Old code
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for (int row = 0; row < rasterBuf.getHeight(); row++) {
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for (int col = 0; col < rasterBuf.getWidth(); col++)
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try {
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rasterBuf.getElemByte(row, col, data);
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image.setRGB(col, row, (0xff000000 + ((data[0] & 0xff) << 16)
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+ ((data[1] & 0xff) << 8) + (data[2] & 0xff)));
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} catch (ArrayIndexOutOfBoundsException ex) {
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System.err.println("== Size Image:" + image.getWidth() + " " + image.getHeight());
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System.err.println("== Position required:" + col + " " + row);
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break;
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}
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if (task.getEvent() != null)
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task.manageEvent(task.getEvent());
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}*/
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for (int row = 0; row < height; row++) { |
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for (int col = 0; col < width; col++) { |
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try {
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rasterBuf.getElemByte((int)(row * scaleY), (int)(col * scaleX), data); |
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image.setRGB(col, row, (0xff000000 + ((data[0] & 0xff) << 16) |
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+ ((data[1] & 0xff) << 8) + (data[2] & 0xff))); |
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} catch (ArrayIndexOutOfBoundsException ex) { |
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System.err.println("== Size Image:" + image.getWidth() + " " + image.getHeight()); |
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System.err.println("== Position required:" + (int)(col * scaleX) + " " + (int)(row * scaleY)); |
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break;
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} |
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} |
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if (task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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} |
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} catch (Exception e) { |
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LoggerFactory.getLogger(this.getClass()).info(
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"Buffer: " + rasterBuf.getWidth() + " " + rasterBuf.getHeight() , e); |
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} |
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} |
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/**
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* Dibuja un raster sobre un BufferedImage con las propiedades de paleta y transparencia
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* @param image BufferedImage sobre el que se dibuja
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* @param data buffer vacio. Se trata de un array de bytes donde cada elemento representa una banda.
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* @param supersampling true si se necesita supersamplear y false si no se necesita
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* @throws ProcessInterruptedException
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*/
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private void drawWithTransparency(BufferedImage image, |
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byte[] data, |
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boolean supersampling,
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Transparency t) throws ProcessInterruptedException { |
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RasterTask task = RasterTaskQueue.get(Thread.currentThread().getId() + ""); |
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int value = 0; |
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try {
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if (supersampling) {
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int[] r = new int[height]; |
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int[] c = new int[width]; |
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calcSupersamplingStepsArrays(r, c); |
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for (int row = 0; row < height; row++) { |
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for (int col = 0; col < width; col++) |
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try {
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rasterBuf.getElemByte(r[row], c[col], data); |
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value = t.processRGB(data[0] & 0xff, data[1] & 0xff, data[2] & 0xff, r[row], c[col]); |
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image.setRGB(col, row, value); |
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} catch (ArrayIndexOutOfBoundsException e) { |
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System.err.println("== Size Image:" + image.getWidth() + " " + image.getHeight()); |
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System.err.println("== Position required:" + col + " " + row); |
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break;
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} |
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if (task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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} else {
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/*Old code
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for (int row = 0; row < rasterBuf.getHeight(); row++) {
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for (int col = 0; col < rasterBuf.getWidth(); col++)
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try {
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rasterBuf.getElemByte(row, col, data);
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value = t.processRGB(data[0] & 0xff, data[1] & 0xff, data[2] & 0xff, row, col);
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image.setRGB(col, row, value);
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} catch (ArrayIndexOutOfBoundsException e) {
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System.err.println("== Size Image:" + image.getWidth() + " " + image.getHeight());
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System.err.println("== Position required:" + col + " " + row);
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break;
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}
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if (task.getEvent() != null)
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task.manageEvent(task.getEvent());
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}
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*/
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for (int row = 0; row < height; row++) { |
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for (int col = 0; col < width; col++) { |
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try {
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int r = (int)(row * scaleY); |
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int c = (int)(col * scaleX); |
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rasterBuf.getElemByte(r, c, data); |
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value = t.processRGB(data[0] & 0xff, data[1] & 0xff, data[2] & 0xff, r, c); |
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image.setRGB(col, row, value); |
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} catch (ArrayIndexOutOfBoundsException e) { |
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System.err.println("== Size Image:" + image.getWidth() + " " + image.getHeight()); |
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System.err.println("== Position required:" + col + " " + row); |
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break;
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} //catch (Exception e) {
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//System.out.println("Row:" + (int)(row * scaleY) + " Col:" + (int)(col * scaleX) + " " + rasterBuf.getBandCount() + " " + data.length);
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//}
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} |
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if (task.getEvent() != null) |
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task.manageEvent(task.getEvent()); |
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} |
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} |
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} catch (Exception e) { |
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LoggerFactory.getLogger(this.getClass()).info(
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"Buffer: " + rasterBuf.getWidth() + " " + rasterBuf.getHeight() , e); |
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} |
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} |
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/**
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* Converts a Buffer object into a byte
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* @param buf
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* @return
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*/
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private Buffer convertToByte(Buffer buf) { |
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Buffer b = DefaultRasterManager.getInstance().createBuffer(Buffer.TYPE_BYTE, buf.getWidth(), buf.getHeight(), buf.getBandCount(), true); |
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if(buf.getDataType() == Buffer.TYPE_SHORT) |
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for (int nBand = 0; nBand < buf.getBandCount(); nBand++) |
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for (int row = 0; row < buf.getHeight(); row++) |
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for (int col = 0; col < buf.getWidth(); col++) |
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b.setElem(row, col, nBand, (byte)(buf.getElemShort(row, col, nBand) & 0xffff)); |
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if(buf.getDataType() == Buffer.TYPE_INT) |
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for (int nBand = 0; nBand < buf.getBandCount(); nBand++) |
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for (int row = 0; row < buf.getHeight(); row++) |
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for (int col = 0; col < buf.getWidth(); col++) |
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b.setElem(row, col, nBand, (byte)(buf.getElemInt(row, col, nBand) & 0xffffffff)); |
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if(buf.getDataType() == Buffer.TYPE_FLOAT) |
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for (int nBand = 0; nBand < buf.getBandCount(); nBand++) |
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for (int row = 0; row < buf.getHeight(); row++) |
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for (int col = 0; col < buf.getWidth(); col++) |
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b.setElem(row, col, nBand, (byte)(Math.round(buf.getElemFloat(row, col, nBand)))); |
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if(buf.getDataType() == Buffer.TYPE_DOUBLE) |
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for (int nBand = 0; nBand < buf.getBandCount(); nBand++) |
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for (int row = 0; row < buf.getHeight(); row++) |
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for (int col = 0; col < buf.getWidth(); col++) |
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b.setElem(row, col, nBand, (byte)(Math.round(buf.getElemDouble(row, col, nBand)))); |
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return b;
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} |
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|
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#setBuffer(org.gvsig.fmap.dal.coverage.dataset.Buffer)
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*/
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public void setBuffer(Buffer b) { |
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this.rasterBuf = b;
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} |
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|
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#setSupersamplingOn(double[], int, int)
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*/
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public void setSupersamplingOn(double[] step) { |
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this.step = step;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#setOutPutSize(int, int)
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*/
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public void setOutputSize(int w, int h) { |
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this.width = w;
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this.height = h;
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} |
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|
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/*
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* (non-Javadoc)
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#dispose()
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*/
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public void dispose() { |
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if(rasterBuf != null) |
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rasterBuf.dispose(); |
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if(transparency != null) |
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transparency.dispose(); |
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try {
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finalize(); |
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} catch (Throwable e) { |
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} |
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} |
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|
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/*
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* (non-Javadoc)
|
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#addEnhanced(org.gvsig.fmap.dal.coverage.store.props.Statistics)
|
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*/
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public Buffer addEnhanced(Statistics stats) { |
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return addEnhanced(stats, true, 0.0); |
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} |
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|
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/*
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* (non-Javadoc)
|
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* @see org.gvsig.fmap.dal.coverage.grid.render.ImageDrawer#addEnhanced(org.gvsig.fmap.dal.coverage.store.props.Statistics)
|
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*/
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public Buffer addEnhanced(Statistics stats, boolean tailTrim, double tailTrimValue) { |
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RasterFilterList filterList = RasterLocator.getManager().createEmptyFilterList(rasterBuf.getDataType()); |
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|
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try {
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/*RasterFilterListManager enhancementManager = filterList.getManagerByID("EnhancementStretch");
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Params params = filterList.createEmptyFilterParams();
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params.setParam("stats", stats);
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params.setParam("remove", new Boolean(false));
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int[] renderBands = new int[rasterBuf.getBandCount()];
|
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for (int i = 0; i < renderBands.length; i++) {
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renderBands[i] = i;
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}
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params.setParam("renderBands", renderBands);
|
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params.setParam("stretchs", null);//coge el LinearStretchParams por defecto
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params.setParam("rgb", new Boolean(true));
|
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enhancementManager.addFilter(params);
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*/
|
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EnhancementStretchListManager enhancementManager = (EnhancementStretchListManager) filterList.getManagerByClass(EnhancementStretchListManager.class); |
| 387 |
int[] renderBands = new int[rasterBuf.getBandCount()]; |
| 388 |
for (int i = 0; i < renderBands.length; i++) { |
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renderBands[i] = i; |
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} |
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enhancementManager.addEnhancedStretchFilter( |
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DefaultLinearStretchParams.createStandardParam(new int[] { 0, 1, 2 }, tailTrimValue, stats, true), |
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stats, |
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renderBands, |
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tailTrim); |
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} catch (FilterTypeException e1) {
|
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} catch (FileNotOpenException e) {
|
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} catch (RasterDriverException e) {
|
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} |
| 400 |
|
| 401 |
if(filterList != null) { |
| 402 |
Extent ext = RasterLocator.getManager().getDataStructFactory(). |
| 403 |
createExtent(rasterBuf.getDataExtent()); |
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filterList.addEnvParam("IStatistics", stats);
|
| 405 |
filterList.addEnvParam("Transparency", transparency);
|
| 406 |
filterList.addEnvParam("GridExtent", ext);
|
| 407 |
filterList.addEnvParam("WindowExtent", ext);
|
| 408 |
filterList.setInitRasterBuf(rasterBuf); |
| 409 |
try {
|
| 410 |
filterList.execute(); |
| 411 |
} catch (ProcessInterruptedException e) {
|
| 412 |
return rasterBuf;
|
| 413 |
} |
| 414 |
rasterBuf = (RasterBuffer) filterList.getResult(); |
| 415 |
} |
| 416 |
return rasterBuf;
|
| 417 |
} |
| 418 |
|
| 419 |
/*
|
| 420 |
* (non-Javadoc)
|
| 421 |
* @see java.lang.Object#finalize()
|
| 422 |
*/
|
| 423 |
protected void finalize() throws Throwable { |
| 424 |
step = null;
|
| 425 |
rasterBuf = null;
|
| 426 |
transparency = null;
|
| 427 |
super.finalize();
|
| 428 |
} |
| 429 |
|
| 430 |
} |