gvsig-raster / org.gvsig.raster.georeferencing / trunk / org.gvsig.raster.georeferencing / org.gvsig.raster.georeferencing.swing / org.gvsig.raster.georeferencing.swing.impl / src / main / java / org / gvsig / raster / georeferencing / swing / impl / view / CanvasZone.java @ 1752
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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.georeferencing.swing.impl.view; |
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import java.awt.AlphaComposite; |
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import java.awt.Color; |
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import java.awt.Graphics; |
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import java.awt.Graphics2D; |
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import java.awt.event.MouseEvent; |
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import java.awt.event.MouseListener; |
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import java.awt.event.MouseMotionListener; |
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import java.awt.geom.AffineTransform; |
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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 java.util.ArrayList; |
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import java.util.List; |
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import javax.swing.JPanel; |
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import org.gvsig.raster.georeferencing.swing.impl.tool.BaseViewTool; |
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import org.gvsig.raster.georeferencing.swing.view.GeorefCanvas; |
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import org.gvsig.raster.georeferencing.swing.view.IGraphicLayer; |
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import org.gvsig.raster.georeferencing.swing.view.ViewEvent; |
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import org.gvsig.raster.georeferencing.swing.view.ViewListener; |
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/**
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* Zona de dibujado del raster
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* 21/12/2007
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* @author Nacho Brodin nachobrodin@gmail.com
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*/
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public class CanvasZone extends JPanel implements GeorefCanvas, MouseListener, MouseMotionListener { |
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private static final long serialVersionUID = 1308683333757367640L; |
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private BufferedImage image = null; |
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private double scale = 1; |
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private Rectangle2D extent = null; |
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private double pixelSize = 1; |
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private Point2D center = null; |
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private List<IGraphicLayer> graphicLayers = new ArrayList<IGraphicLayer>(); |
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/**
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* ?ltimo extent aplicado. Si no ha variado el siguiente a aplicar no hace falta que releamos de nuevo
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*/
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private Rectangle2D lastExtent = null; |
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//Ultimo Image con la capa dibujada y con la transformaci?n que tiene en cuenta los desplazamientos dentro de un pixel
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//Este buffer no varia hasta que se hace la siguiente petici?n de setDrawParams
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private BufferedImage lastImage = null; |
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//lastImage sobre el que se pintan las capas gr?ficas. Este buffer varia en cada repaint. El orden en el que se carga
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//es: se vuelva el lastImage, se pintan las capas gr?ficas, se pintan las tools.
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private BufferedImage lastImageWithLayers = null; |
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private boolean clear = false; |
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private BaseViewTool selectedTool = null; |
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private Point2D realCoord = new Point2D.Double(0, 0); |
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//private Point2D viewCoord = new Point2D.Double(0, 0);
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private boolean showInfo = false; |
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/**
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* Informa de que la esquina superior izquierda corresponde con el valor de m?nimo X y
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* m?ximo Y. En caso de ser false esta esquina ser?a de m?nimo X y m?nimo Y.
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*/
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private boolean minxMaxyUL = true; |
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private Color backgroundColor = Color.BLACK; |
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private Color textColor = Color.RED; |
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/**
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* Normalmente no se hace una petici?n al dibujado del raster si el extent no ha variado. Si esta variable
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* est? a true fuerza que haya una petici?n de redibujado aunque el extent del raster no haya cambiado.
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* Esto solo se hace para una petici?n. La siguiente vuelve a estar a false.
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*/
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private boolean forceRequest = false; |
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private ViewListener viewListener = null; |
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/**
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* Creamos una sola instancia de Event para no tener que malgastar recursos
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* creando una en cada dibujado
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*/
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private ViewEvent viewEvent = null; |
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private AffineTransform panAT = new AffineTransform(); |
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/**
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* Asigna los par?metros de dibujado
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* @param img Buffer con un ?rea de datos
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* @param ext Rectangle2D del ?rea de datos dada
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* @param pixelSize Tama?o de pixel
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* @param center Punto del ?rea de datos donde se quiere centrar el dibujado del buffer
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*/
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public void setDrawParams(BufferedImage img, Rectangle2D ext, double pixelSize, Point2D center) { |
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this.image = img;
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this.extent = ext;
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this.pixelSize = pixelSize;
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this.center = center;
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this.addMouseListener(this); |
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this.addMouseMotionListener(this); |
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repaint(); |
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} |
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/**
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* Asigna el listener de eventos de la vista
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* @param listener
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*/
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public void setViewListener(ViewListener listener) { |
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this.viewListener = listener;
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viewEvent = new ViewEvent(this); |
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} |
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/**
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* Asigna un nuevo centro de visualizaci?n
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* @param center
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*/
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public void setCenter(Point2D center) { |
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this.center = center;
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repaint(); |
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} |
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/**
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* Conversi?n de un punto en coordenadas del canvas a reales
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* @param p
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* @return
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*/
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public Point2D viewCoordsToWorld(Point2D p) { |
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int w = getVisibleRect().width;
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int h = getVisibleRect().height;
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double cx = extent.getMinX() + ((p.getX() * extent.getWidth()) / w);
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double cy = 0; |
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if(minxMaxyUL) //Cuando las Y decrecen de arriba a abajo |
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cy = extent.getMaxY() - (p.getY() * extent.getHeight()) / h; |
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else //Cuando las Y crecen de arriba a abajo |
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cy = extent.getMinY() + (p.getY() * extent.getHeight()) / h; |
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return new Point2D.Double(cx, cy); |
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} |
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/**
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* Conversi?n de un punto en coordenadas del canvas a reales
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* @param p
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* @return
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*/
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public Point2D viewCoordsFromWorld(Point2D p) { |
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int w = getVisibleRect().width;
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int h = getVisibleRect().height;
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double cx = ((p.getX() - extent.getMinX()) * w) / extent.getWidth();
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double cy = 0; |
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if(minxMaxyUL) //Cuando las Y decrecen de arriba a abajo |
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cy = ((extent.getMaxY() - p.getY()) * h) / extent.getHeight(); |
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else //Cuando las Y crecen de arriba a abajo |
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cy = ((p.getY() - extent.getMinY()) * h) / extent.getHeight(); |
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return new Point2D.Double(cx, cy); |
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} |
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/**
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* Obtiene el extent del canvas en coordenadas del mundo real
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* @return Rectangle2D
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*/
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public Rectangle2D getExtent() { |
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if(lastExtent == null) |
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return extent;
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return lastExtent;
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} |
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/**
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* Asigna un nuevo centro de visualizaci?n en coordenadas del
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* componente.
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* @param center
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*/
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public void setViewCenter(Point2D c) { |
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int w = getVisibleRect().width;
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int h = getVisibleRect().height;
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double cx = (c.getX() * lastExtent.getWidth()) / w;
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double cy = (c.getY() * lastExtent.getHeight()) / h;
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setPixelCenter(new Point2D.Double(cx, cy)); |
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} |
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/**
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* Asigna un nuevo centro de visualizaci?n en coordenadas pixel
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* del ?rea de dibujado (canvas). El nuevo centro ser? calculado en coordenadas
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* del mapa.
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* @param center
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*/
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public void setPixelCenter(Point2D c) { |
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int w = getVisibleRect().width;
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int h = getVisibleRect().height;
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//Calculamos el extent del canvas
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Rectangle2D ext = getCanvasExtent(w, h, scale);
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//Calculamos el nuevo centro en coordenadas reales
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double wWC = (c.getX() / scale) * pixelSize;
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double hWC = (c.getY() / scale) * pixelSize;
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this.center = new Point2D.Double(ext.getMinX() + wWC, |
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ext.getMinY() - hWC); |
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repaint(); |
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} |
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/**
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* Asigna un nuevo centro de visualizaci?n en coordenadas pixel. Esta llamada tiene
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* en cuenta solo p?xeles completos. No centra sobre porciones de pixel cuando el zoom es
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* mayor de 1:1. El nuevo centro es en coordenadas del mapa pero siempre centrar?
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* en la esquina inferior izquierda del pixel.
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* @param center
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*/
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public void setPixelCenter(int x, int y) { |
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int w = getVisibleRect().width;
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int h = getVisibleRect().height;
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//Calculamos el extent del canvas
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Rectangle2D ext = getCanvasExtent(w, h, scale);
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//Calculamos el nuevo centro en coordenadas reales
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double wWC = (x / scale) * pixelSize;
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double hWC = (y / scale) * pixelSize;
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Point2D center = new Point2D.Double(ext.getMinX() + wWC, |
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ext.getMinY() - hWC); |
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//Calculamos la coordena pixel a la que pertenece esa coordenada real
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int pxX = (int)((center.getX() * (w / scale)) / ext.getWidth()); |
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int pxY = (int)((center.getY() * (h / scale)) / ext.getHeight()); |
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//Despu?s de haber convertido a pixel y redondeado la coordenada a entero volvemos a convertirla en real
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double wcX = (pxX * ext.getWidth()) / (w / scale);
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double wcY = (pxY * ext.getHeight()) / (h / scale);
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this.center = new Point2D.Double(wcX, wcY); |
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repaint(); |
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} |
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/**
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* Asigna una capa gr?fica
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* @param layer IGraphicLayer
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*/
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public void setGraphicLayer(IGraphicLayer layer) { |
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graphicLayers.add(layer); |
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} |
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/**
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* Obtiene la lista de capas gr?ficas
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* @return
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*/
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public List<IGraphicLayer> getGraphicLayers() { |
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return graphicLayers;
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} |
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/**
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* Asigna la escala para el nuevo zoom
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* @param scale
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*/
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public void setZoom(double scale) { |
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this.scale = scale;
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repaint(); |
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} |
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/**
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* Obtiene la escala aplicada en el dibujado
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* @return double
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*/
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public double getZoom() { |
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return scale;
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} |
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/**
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* Obtiene el extent actual asignado al canvas
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* @return Rectangle2D
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*/
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public Rectangle2D getCanvasExtent() { |
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return lastExtent;
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} |
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/**
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* Asigna el extent del canvas
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* @param r
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*/
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public void setCanvasExtent(Rectangle2D r) { |
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this.lastExtent = r;
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} |
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/**
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* Obtiene el tama?o de pixel
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* @return double
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*/
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public double getPixelSize() { |
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return pixelSize;
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} |
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/**
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* Obtiene el centro del canvas
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* @return Point2D
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*/
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public Point2D getCenter() { |
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return center;
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} |
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/**
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* Obtiene el buffer de la vista activa y lo dibuja sobre el panel
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* con los datos de escala y desplazamiento seleccionados.
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*/
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protected void paintComponent(Graphics g) { |
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if(image == null) |
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return;
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if(viewListener != null) |
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viewListener.startDraw(viewEvent); |
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int w = getVisibleRect().width;
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int h = getVisibleRect().height;
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Rectangle2D ext = getCanvasExtent(w, h, scale);
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if(lastImage == null || !equal(lastExtent, ext)) { |
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lastImage = new BufferedImage((int)w, (int)h, BufferedImage.TYPE_INT_RGB); |
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lastImageWithLayers = new BufferedImage((int)w, (int)h, BufferedImage.TYPE_INT_RGB); |
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} else if(!panAT.isIdentity()) { |
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//Cuando se hace un Pan se dibuja el fondo y un imagen superpuesta transparente
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g.drawImage(lastImageWithLayers, 0, 0, null); |
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((Graphics2D)g).transform(panAT);
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AlphaComposite composite = AlphaComposite.getInstance(AlphaComposite.SRC_ATOP, 0.4f); |
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((Graphics2D)g).setComposite(composite);
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g.drawImage(lastImage, 0, 0, null); |
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return;
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} |
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if(clear) {
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g.setColor(backgroundColor); |
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g.fillRect(0, 0, w, h); |
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return;
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} |
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//Dibujamos el buffer sobre el grafics
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Graphics graphicsDB = draw(ext, w, h);
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//Dibujamos todas las capas registradas
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for (int i = 0; i < graphicLayers.size(); i++) |
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((IGraphicLayer)graphicLayers.get(i)).draw((Graphics2D)graphicsDB, ext, w, h);
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lastExtent = ext; |
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if(selectedTool != null) |
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selectedTool.draw(graphicsDB); |
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if(showInfo)
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showInfo(graphicsDB); |
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g.drawImage(lastImageWithLayers, 0, 0, this); |
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graphicsDB.dispose(); |
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if(viewListener != null) |
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viewListener.endDraw(viewEvent); |
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} |
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/**
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* Muestra informaci?n sobre la vista
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* @param g
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*/
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private void showInfo(Graphics g) { |
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g.setColor(textColor); |
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g.drawString("X: " + clipDecimals(realCoord.getX(), 3), 12, 18); |
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g.drawString("Y: " + clipDecimals(realCoord.getY(), 3), 12, 32); |
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} |
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public double clipDecimals(double num, int n) { |
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long m = (long) Math.pow(10, n); |
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long aux = Math.round(num * m); |
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return (double) aux / (double) m; |
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} |
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/**
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* Compara dos extents y devuelve true si son iguales y false si son distintos
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* @param e1 Extent 1
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* @param e2 Extent 2
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* @return true si son iguales y false si son diferentes
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*/
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private boolean equal(Rectangle2D e1, Rectangle2D e2) { |
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return (e1 != null && e2 != null && e1.getMinX() == e2.getMinX() && e1.getMinY() == e2.getMinY() |
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&& e1.getMaxX() == e2.getMaxX() && e1.getMaxY() == e2.getMaxY()); |
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} |
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/**
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* Obtiene el Extent del canvas. Este canvas tiene un ancho en pixeles
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* de w y un alto de h. Tiene en cuenta la escala a la que se quiere dibujar
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* para devolver el extent cuando el zoom ya est? aplicado.
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* @param w Ancho del canvas en p?xeles
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* @param h Alto del canvas en p?xeles
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* @return Rectangle2D
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*/
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private Rectangle2D getCanvasExtent(double w, double h, double scale) { |
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double tW = ((w / scale) / 2) * pixelSize; |
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double tH = ((h / scale) / 2) * pixelSize; |
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double minX = center.getX() - tW;
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double minY = center.getY() - tH;
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double width = Math.abs((center.getX() + tW) - minX); |
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double height = Math.abs((center.getY() + tH) - minY); |
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return new Rectangle2D.Double(minX, minY, width, height); |
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} |
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|
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/**
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* <P>
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* Dibujado del buffer de datos sobre el Graphics.
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* </P><P>
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* No podemos aplicar un escalado al
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* Graphics y dibujar porque cuando el zoom es mayor a 1 los pixeles no empiezan a dibujarse
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* siempre en la esquina superior izquierda y al Graphics solo podemos ordenarle el dibujado
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* en coordenadas enteras. Para solucionarlo debemos copiar el trozo de buffer a dibujar teniendo
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* en cuenta el desplazamiento de la esquina superior izquierda de un pixel.
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* </P>
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* @param g
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* @param ext
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* @param w
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* @param h
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*/
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private Graphics draw(Rectangle2D ext, double w, double h) { |
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if(!equal(lastExtent, ext) || forceRequest) {
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//Hallamos la coordenada pixel del buffer de la esquina superior izquierda del extent
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double pxX = ((ext.getMinX() - extent.getMinX()) * (w / scale)) / ext.getWidth();
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double pxY = ((extent.getMinY() - ext.getMinY()) * (h / scale)) / ext.getHeight();
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//Creamos el buffer y lo cargamos teniendo en cuenta el desplazamiento inicial
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double step = 1 / scale; |
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double xValue = pxX;
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double yValue = pxY;
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for (int i = 0; i < w; i++) { |
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yValue = pxY; |
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for (int j = 0; j < h; j++) { |
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if((int)xValue >= 0 && (int)yValue >= 0 && (int)xValue < image.getWidth() && (int)yValue < image.getHeight()) { |
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lastImage.setRGB(i, j, image.getRGB((int)xValue, (int)yValue)); |
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lastImageWithLayers.setRGB(i, j, image.getRGB((int)xValue, (int)yValue)); |
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} else {
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lastImage.setRGB(i, j, 0xffffffff);
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lastImageWithLayers.setRGB(i, j, 0xffffffff);
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} |
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yValue += step; |
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} |
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xValue += step; |
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} |
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if(viewListener != null) |
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viewListener.zoomViewChanged(viewEvent); |
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forceRequest = false;
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} else
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((Graphics2D)lastImageWithLayers.getGraphics()).drawImage(lastImage, 0, 0, null); |
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return lastImageWithLayers.getGraphics();
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} |
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|
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/*
|
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* (non-Javadoc)
|
466 |
* @see java.awt.event.MouseListener#mouseClicked(java.awt.event.MouseEvent)
|
467 |
*/
|
468 |
public void mouseClicked(MouseEvent e) { |
469 |
for (int i = 0; i < graphicLayers.size(); i++) |
470 |
((IGraphicLayer)graphicLayers.get(i)).mouseClicked(e); |
471 |
repaint(); |
472 |
} |
473 |
|
474 |
/*
|
475 |
* (non-Javadoc)
|
476 |
* @see java.awt.event.MouseListener#mouseEntered(java.awt.event.MouseEvent)
|
477 |
*/
|
478 |
public void mouseEntered(MouseEvent e) { |
479 |
for (int i = 0; i < graphicLayers.size(); i++) |
480 |
((IGraphicLayer)graphicLayers.get(i)).mouseEntered(e); |
481 |
repaint(); |
482 |
} |
483 |
|
484 |
/*
|
485 |
* (non-Javadoc)
|
486 |
* @see java.awt.event.MouseListener#mouseExited(java.awt.event.MouseEvent)
|
487 |
*/
|
488 |
public void mouseExited(MouseEvent e) { |
489 |
for (int i = 0; i < graphicLayers.size(); i++) |
490 |
((IGraphicLayer)graphicLayers.get(i)).mouseExited(e); |
491 |
repaint(); |
492 |
} |
493 |
|
494 |
/*
|
495 |
* (non-Javadoc)
|
496 |
* @see java.awt.event.MouseListener#mousePressed(java.awt.event.MouseEvent)
|
497 |
*/
|
498 |
public void mousePressed(MouseEvent e) { |
499 |
for (int i = 0; i < graphicLayers.size(); i++) |
500 |
((IGraphicLayer)graphicLayers.get(i)).mousePressed(e); |
501 |
repaint(); |
502 |
} |
503 |
|
504 |
/*
|
505 |
* (non-Javadoc)
|
506 |
* @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
|
507 |
*/
|
508 |
public void mouseReleased(MouseEvent e) { |
509 |
for (int i = 0; i < graphicLayers.size(); i++) |
510 |
((IGraphicLayer)graphicLayers.get(i)).mouseReleased(e); |
511 |
repaint(); |
512 |
} |
513 |
|
514 |
/*
|
515 |
* (non-Javadoc)
|
516 |
* @see java.awt.event.MouseMotionListener#mouseDragged(java.awt.event.MouseEvent)
|
517 |
*/
|
518 |
public void mouseDragged(MouseEvent e) { |
519 |
for (int i = 0; i < graphicLayers.size(); i++) |
520 |
((IGraphicLayer)graphicLayers.get(i)).mouseDragged(e); |
521 |
repaint(); |
522 |
} |
523 |
|
524 |
/*
|
525 |
* (non-Javadoc)
|
526 |
* @see java.awt.event.MouseMotionListener#mouseMoved(java.awt.event.MouseEvent)
|
527 |
*/
|
528 |
public void mouseMoved(MouseEvent e) { |
529 |
realCoord = viewCoordsToWorld((Point2D)e.getPoint());
|
530 |
//viewCoord = e.getPoint();
|
531 |
for (int i = 0; i < graphicLayers.size(); i++) |
532 |
((IGraphicLayer)graphicLayers.get(i)).mouseMoved(e); |
533 |
repaint(); |
534 |
} |
535 |
|
536 |
/**
|
537 |
* Asigna la tool seleccionada
|
538 |
* @param selectedTool
|
539 |
*/
|
540 |
public void setSelectedTool(BaseViewTool selectedTool) { |
541 |
this.selectedTool = selectedTool;
|
542 |
} |
543 |
|
544 |
/**
|
545 |
* Obtiene la herramienta seleccionada
|
546 |
* @return BaseViewTool
|
547 |
*/
|
548 |
public BaseViewTool getSelectedTool() {
|
549 |
return selectedTool;
|
550 |
} |
551 |
|
552 |
/**
|
553 |
* Activa o desactiva el mostrado de informaci?n
|
554 |
* @param showInfo
|
555 |
*/
|
556 |
public void setShowInfo(boolean showInfo) { |
557 |
this.showInfo = showInfo;
|
558 |
} |
559 |
|
560 |
/**
|
561 |
* Asigna el valor para el flag minxMaxyUL. Este flag informa de que la esquina
|
562 |
* superior izquierda corresponde con el valor de m?nimo X y m?ximo Y. En caso
|
563 |
* de ser false esta esquina ser?a de m?nimo X y m?nimo Y.
|
564 |
* @param v
|
565 |
*/
|
566 |
public void setMinxMaxyUL(boolean v) { |
567 |
this.minxMaxyUL = v;
|
568 |
} |
569 |
|
570 |
/**
|
571 |
* Obtiene el valor para el flag minxMaxyUL. Este flag informa de que la esquina
|
572 |
* superior izquierda corresponde con el valor de m?nimo X y m?ximo Y. En caso
|
573 |
* de ser false esta esquina ser?a de m?nimo X y m?nimo Y.
|
574 |
* @param v
|
575 |
*/
|
576 |
public boolean getMinxMaxyUL() { |
577 |
return minxMaxyUL;
|
578 |
} |
579 |
|
580 |
/**
|
581 |
* Asigna el color del texto
|
582 |
* @param textColor
|
583 |
*/
|
584 |
public void setTextColor(Color textColor) { |
585 |
this.textColor = textColor;
|
586 |
repaint(); |
587 |
} |
588 |
|
589 |
/**
|
590 |
* Obtiene el color del texto
|
591 |
* @return
|
592 |
*/
|
593 |
public Color getTextColor() { |
594 |
return textColor;
|
595 |
} |
596 |
|
597 |
/**
|
598 |
* Obtiene el color de fondo
|
599 |
* @return
|
600 |
*/
|
601 |
public Color getBackgroundColor() { |
602 |
return backgroundColor;
|
603 |
} |
604 |
|
605 |
/**
|
606 |
* Asigna el color de fondo
|
607 |
* @param backgroundColor
|
608 |
*/
|
609 |
public void setBackgroundColor(Color backgroundColor) { |
610 |
this.backgroundColor = backgroundColor;
|
611 |
} |
612 |
|
613 |
/**
|
614 |
* Normalmente no se hace una petici?n al dibujado del raster si el extent no ha variado. Si esta variable
|
615 |
* est? a true fuerza que haya una petici?n de redibujado aunque el extent del raster no haya cambiado.
|
616 |
* Esto solo se hace para una petici?n. La siguiente vuelve a estar a false.
|
617 |
* @return
|
618 |
*/
|
619 |
public boolean isForceRequest() { |
620 |
return forceRequest;
|
621 |
} |
622 |
|
623 |
/**
|
624 |
* Normalmente no se hace una petici?n al dibujado del raster si el extent no ha variado. Si esta variable
|
625 |
* est? a true fuerza que haya una petici?n de redibujado aunque el extent del raster no haya cambiado.
|
626 |
* Esto solo se hace para una petici?n. La siguiente vuelve a estar a false.
|
627 |
* @param forceRequest
|
628 |
*/
|
629 |
public void setForceRequest(boolean forceRequest) { |
630 |
this.forceRequest = forceRequest;
|
631 |
} |
632 |
|
633 |
public AffineTransform getAffineTransform() { |
634 |
return panAT;
|
635 |
} |
636 |
} |