svn-gvsig-desktop / trunk / extensions / extRasterTools-SE / src / org / gvsig / raster / filter / mask / MaskByteFilter.java @ 19894
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
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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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package org.gvsig.raster.filter.mask; |
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import java.awt.geom.Point2D; |
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import java.awt.image.DataBuffer; |
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import org.gvsig.raster.grid.roi.ROI; |
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/**
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* Filtro que aplica una m?scara con la lista de ROIS. Los p?xeles dentro
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* de la ROI se ponen al valor de la imagen de origen. Los p?xeles fuera
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* de la ROI se ponen a NoData. Esta clase es la gestiona los datos para los
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* raster de tipo byte.
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*
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* 14/03/2008
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* @author Nacho Brodin nachobrodin@gmail.com
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*/
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public class MaskByteFilter extends MaskFilter { |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.filter.mask.MaskFilter#process(int, int)
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*/
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public void process(int x, int y) { |
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if ((windowExtent == null) || (gridExtent == null)) |
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return;
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double newX = windowExtent.minX() + ((((double) x) * windowExtent.width()) / ((double) raster.getWidth())); |
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double newY = windowExtent.minY() + ((( (double) (raster.getHeight() - (y ))) * windowExtent.height()) / ((double) raster.getHeight())); |
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Point2D point2D = dataset.worldToRaster(new Point2D.Double(newX, newY)); |
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newX = point2D.getX(); |
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newY = point2D.getY(); |
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if(inverse) {
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for (int i = 0; i < rois.size(); i++) { |
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if (((ROI) rois.get(i)).isInGrid((int) Math.round(newX), (int) Math.round(newY))) { |
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for (int j = 0; j < raster.getBandCount(); j++) |
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rasterResult.setElem(y, x, j, (byte)nodata);
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if(rasterAlpha != null) |
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rasterAlpha.setElem(y, x, 0, (byte)0); |
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return;
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} |
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} |
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for (int j = 0; j < raster.getBandCount(); j++) |
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rasterResult.setElem(y, x, j, raster.getElemByte(y, x, j)); |
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if(rasterAlpha != null) |
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rasterAlpha.setElem(y, x, 0, (byte)255); |
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return;
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} |
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for (int i = 0; i < rois.size(); i++) { |
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if (((ROI) rois.get(i)).isInGrid((int) Math.round(newX), (int) Math.round(newY))) { |
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for (int j = 0; j < raster.getBandCount(); j++) |
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rasterResult.setElem(y, x, j, raster.getElemByte(y, x, j)); |
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if(rasterAlpha != null) |
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rasterAlpha.setElem(y, x, 0, (byte)255); |
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return;
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} |
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} |
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for (int j = 0; j < raster.getBandCount(); j++) |
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rasterResult.setElem(y, x, j, (byte)nodata);
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if(rasterAlpha != null) |
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rasterAlpha.setElem(y, x, 0, (byte)0); |
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return;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.filter.mask.MaskFilter#getInRasterDataType()
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*/
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public int getInRasterDataType() { |
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return DataBuffer.TYPE_BYTE; |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.raster.filter.mask.MaskFilter#getOutRasterDataType()
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*/
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public int getOutRasterDataType() { |
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return DataBuffer.TYPE_BYTE; |
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} |
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} |