svn-gvsig-desktop / trunk / extensions / extRasterTools-SE / src / org / gvsig / rastertools / georeferencing / ui / zoom / ViewRasterRequestManager.java @ 18289
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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) 2007 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.rastertools.georeferencing.ui.zoom; |
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import java.awt.Dimension; |
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import java.awt.Graphics2D; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.awt.image.BufferedImage; |
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import org.gvsig.fmap.raster.layers.FLyrRasterSE; |
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import org.gvsig.raster.dataset.InvalidSetViewException; |
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import org.gvsig.raster.dataset.io.RasterDriverException; |
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import org.gvsig.raster.datastruct.Extent; |
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import org.gvsig.raster.datastruct.ViewPortData; |
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import org.gvsig.raster.util.RasterUtilities; |
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import org.gvsig.rastertools.georeferencing.view.BaseZoomView; |
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/**
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* Gestor de peticiones de zoom sobre el panel con el raster a georreferenciar.
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* Implementa el interfaz IExtensionRequest para que este comunique la peticiones
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* de zoom y ViewRasterRequestManager pueda hacer las peticiones de datos a la capa.
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*
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* 30/12/2007
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class ViewRasterRequestManager implements IExtensionRequest { |
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private FLyrRasterSE lyr = null; |
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private BaseZoomView view = null; |
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/**
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* Asigna la capa a georreferenciar de donde se obtienen los datos.
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* @param lyr
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*/
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public ViewRasterRequestManager(BaseZoomView view, FLyrRasterSE lyr) {
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this.lyr = lyr;
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this.view = view;
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} |
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/**
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* Calcula la extensi?n que contendr? la vista a partir del extent
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* m?ximo de la capa/s que contienen . Tienen en cuenta las distintan proporciones
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* entre vista y petici?n
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* @param Rectangle2D
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*/
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public Rectangle2D initRequest(Rectangle2D extent) throws InvalidRequestException { |
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double x = extent.getX();
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double y = extent.getY();
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double w = extent.getWidth();
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double h = extent.getHeight();
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//Calculamos la extensi?n de la vista para el extent m?ximo que va a contener
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//teniendo en cuenta las proporciones de ambos.
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if(extent.getWidth() < extent.getHeight()) {
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if(((double)view.getCanvasWidth() / (double)view.getCanvasHeight()) <= (extent.getWidth() / extent.getHeight())) { |
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h = (view.getCanvasHeight() * w) / view.getCanvasWidth(); |
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y = extent.getCenterY() - (h / 2);
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} else { //p1 < p2 |
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w = (view.getCanvasWidth() * h) / view.getCanvasHeight(); |
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x = extent.getCenterX() - (w / 2);
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} |
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} else {
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if(((double)view.getCanvasWidth() / (double)view.getCanvasHeight()) >= (extent.getWidth() / extent.getHeight())) { |
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w = (view.getCanvasWidth() * h) / view.getCanvasHeight(); |
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x = extent.getCenterX() - (w / 2);
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} else { //p1 < p2 |
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h = (view.getCanvasHeight() * w) / view.getCanvasWidth(); |
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y = extent.getCenterY() - (h / 2);
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} |
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} |
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Rectangle2D r = new Rectangle2D.Double(x, y, w, h); |
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setDrawParams(null, r);
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request(r); |
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return r;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.rastertools.georeferencing.ui.zoom.IExtensionRequest#request(java.awt.geom.Rectangle2D)
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*/
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public Rectangle2D request(Rectangle2D extent) throws InvalidRequestException { |
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if(extent == null) |
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return lyr.getFullExtent();
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//Ajustamos el extent al del raster
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Extent ext = new Extent(extent);//.getX(), extent.getY(), extent.getX() + extent.getWidth(), extent.getY() - extent.getHeight()); |
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Extent extSelection = RasterUtilities.calculateAdjustedView(ext, lyr.getFullRasterExtent()); |
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//Obtenemos el viewport y calculamos la matriz de transformaci?n
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ViewPortData vp = new ViewPortData( null, ext, new Dimension(view.getCanvasWidth(), view.getCanvasHeight())); |
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vp.calculateAffineTransform(); |
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//Calculamos el punto del canvas de la vista donde se empieza a dibujar el buffer de la imagen
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Point2D pt = new Point2D.Double(extSelection.getULX(), extSelection.getLRY()); |
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vp.mat.transform(pt, pt); |
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try {
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//Dibujamos a trav?s del render de la capa en un graphics como el de la vista
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BufferedImage initImg = new BufferedImage(view.getCanvasWidth(), view.getCanvasHeight(), BufferedImage.TYPE_INT_RGB); |
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BufferedImage drawedImg = (BufferedImage)lyr.getRender().draw((Graphics2D)initImg.getGraphics(), vp); |
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((Graphics2D)initImg.getGraphics()).drawImage(drawedImg, (int) Math.round(pt.getX()), (int) Math.round(pt.getY()), null); |
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setDrawParams(initImg, extent); |
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} catch (RasterDriverException e) {
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throw new InvalidRequestException("Error en al acceso al fichero"); |
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} catch (InvalidSetViewException e) {
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throw new InvalidRequestException("Error asignando el ?rea de la petici?n"); |
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} catch (InterruptedException e) { |
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} |
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return extent;
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.rastertools.georeferencing.ui.zoom.IExtensionRequest#fullExtent(java.awt.Dimension)
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*/
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public void fullExtent() throws InvalidRequestException { |
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this.initRequest(lyr.getFullRasterExtent().toRectangle2D());
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} |
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/**
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* Asigna los par?metros para el control de zoom del mapa
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* @param img BufferedImage
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* @param vp ViewPort
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*/
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public void setDrawParams(BufferedImage img, Rectangle2D extBuf) { |
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if(view != null && lyr != null) { |
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if(img != null) |
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view.setDrawParams(img, extBuf, extBuf.getWidth()/img.getWidth(), new Point2D.Double(extBuf.getCenterX(), extBuf.getCenterY())); |
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else
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view.setDrawParams(img, extBuf, extBuf.getWidth()/view.getCanvasWidth(), new Point2D.Double(extBuf.getCenterX(), extBuf.getCenterY())); |
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} |
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} |
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} |