svn-gvsig-desktop / trunk / extensions / extRasterTools-SE / src / org / gvsig / rastertools / geolocation / behavior / ShearBehavior.java @ 22529
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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) 2006 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.geolocation.behavior; |
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import java.awt.AlphaComposite; |
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import java.awt.Cursor; |
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import java.awt.Graphics; |
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import java.awt.Graphics2D; |
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import java.awt.Image; |
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import java.awt.event.MouseEvent; |
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import java.awt.geom.AffineTransform; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.awt.geom.Point2D; |
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import javax.swing.ImageIcon; |
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import org.gvsig.raster.datastruct.Extent; |
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import org.gvsig.raster.util.RasterToolsUtil; |
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import com.iver.cit.gvsig.fmap.ViewPort; |
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import com.iver.cit.gvsig.fmap.tools.BehaviorException; |
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import com.iver.cit.gvsig.fmap.tools.Listeners.RectangleListener; |
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import com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener; |
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/**
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* Comportamiento que se aplica a la herramienta de shear. El cursor del rat?n cambiar? cuando
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* se encuentre en la zona exterior al raster, permitiendo el deformar la imagen al pinchar y
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* arrastrar en los ejes X e Y.
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*
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* Nacho Brodin (nachobrodin@gmail.com)
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*
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*/
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public class ShearBehavior extends TransformationBehavior { |
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//N?mero de pixeles de ancho del borde donde el cursor se activar?. Son pixeles del canvas de la vista.
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//De esta forma da igual la escala a la que est? la imagen siempre tiene la misma precisi?n
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private int PX_SELEC_BASE = 12; |
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private int PX_SELEC = PX_SELEC_BASE; |
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private RectangleListener listener;
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private final Image shearYImg = new ImageIcon(getClass().getClassLoader().getResource( |
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"images/y.gif")).getImage();
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private final Image shearXImg = new ImageIcon(getClass().getClassLoader().getResource( |
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"images/x.gif")).getImage();
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/**
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* Puntos de inicio y final para el arrastre de la imagen.
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*/
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private Point2D beforePoint = null; |
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private Point2D nextPoint = null; |
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private AffineTransform boxShear = null; |
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/**
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* Lista de flags de redimensionado para cada lado del raster
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* [0]-esquina superior derecha
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* [1]-esquina superior izquierda
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* [2]-esquina inferior derecha
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* [3]-esquina inferior izquierda
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*/
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private boolean[] cornerActive = {false, false, false, false}; |
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private boolean init = false; |
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/**
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* Controla si se ha activado el shear o no
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*/
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private boolean isShearing = false; |
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/**
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* Contiene el valor del incremento
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*/
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private double incrShear = 0.01; |
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/**
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* Control del valor del shearing en X
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*/
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private double shearX = 0; |
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/**
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* Control del valor del shearing en Y
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*/
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private double shearY = 0; |
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/**
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* Crea un nuevo RectangleBehavior.
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*
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* @param zili listener.
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*/
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public ShearBehavior(GeoRasterBehavior grb, Cursor cur, ITransformIO windowIO) { |
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grBehavior = grb; |
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defaultCursor = cur; |
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this.trIO = windowIO;
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} |
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/**
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* Inicializaci?n. Calcula la longitud de la esquina y el ancho en p?xeles
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* de la zona de detecci?n del puntero de rat?n. Inicialmente esto est? calculado en
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* unidades pixel de la vista pero la detecci?n de puntero, debido a la rotaci?n posible
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* del raster ha de hacerse en unidades del raster en disco por ello ha de calcularse
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* una escala entre ambas unidades cuando se carga la aplicaci?n.
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*
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*/
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private void init() { |
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ViewPort vp = grBehavior.getMapControl().getMapContext().getViewPort(); |
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lyr = grBehavior.getLayer(); |
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if(lyr == null) |
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return ;
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Extent ext = lyr.getDataSource().getExtent(); |
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AffineTransform atImg = lyr.getAffineTransform();
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//Establecer una escala entre las coordenadas de la vista y las coordenadas pixel
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Point2D ul = new Point2D.Double(ext.getULX(), ext.getULY()); |
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Point2D lr = new Point2D.Double(ext.getLRX(), ext.getLRY()); |
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Point2D ulPx = new Point2D.Double(); |
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Point2D lrPx = new Point2D.Double(); |
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Point2D ulVp = new Point2D.Double(); |
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Point2D lrVp = new Point2D.Double(); |
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double esc = 1; |
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try {
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atImg.inverseTransform(ul, ulPx); |
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atImg.inverseTransform(lr, lrPx); |
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ulVp = vp.fromMapPoint(ul); |
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lrVp = vp.fromMapPoint(lr); |
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esc = Math.abs(lrPx.getX() - ulPx.getX()) / Math.abs(lrVp.getX() - ulVp.getX()); |
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} catch (NoninvertibleTransformException e1) { |
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RasterToolsUtil.messageBoxError("error_transformacion1", this, e1); |
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return;
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} |
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//Escalar PX_SELEC y LONG_CORNER para tenerlo en coordenadas pixel
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PX_SELEC = (int)(PX_SELEC_BASE * esc);
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init = true;
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} |
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/**
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* Cuando se produce un evento de pintado dibujamos el marco de la imagen para
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* que el usuario pueda seleccionar y redimensionar.
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*/
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public void paintComponent(Graphics g) { |
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if(lyr == null) |
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lyr = grBehavior.getLayer(); |
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if(isShearing && lyr != null) { |
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try {
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ViewPort vp = grBehavior.getMapControl().getMapContext().getViewPort(); |
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AffineTransform at = new AffineTransform(lyr.getAffineTransform()); |
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Extent ext = lyr.getFullRasterExtent(); |
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Point2D center = new Point2D.Double(lyr.getPxWidth() / 2, lyr.getPxHeight()/ 2); |
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at.transform(center, center); |
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Point2D ul = new Point2D.Double(ext.getULX(), ext.getULY()); |
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Point2D lr = new Point2D.Double(ext.getLRX(), ext.getLRY()); |
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AffineTransform T1 = new AffineTransform(1, 0, 0, 1, -center.getX(), -center.getY()); |
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AffineTransform R1 = new AffineTransform(); |
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R1.setToShear(shearX, shearY); |
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AffineTransform T2 = new AffineTransform(1, 0, 0, 1, center.getX(), center.getY()); |
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T2.concatenate(R1); |
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T2.concatenate(T1); |
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T2.transform(ul, ul); |
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T2.transform(lr, lr); |
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at.preConcatenate(T2); |
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boxShear = new AffineTransform(at); |
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at.preConcatenate(vp.getAffineTransform()); |
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vp.getAffineTransform().transform(ul, ul); |
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at.inverseTransform(ul, ul); |
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vp.getAffineTransform().transform(lr, lr); |
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at.inverseTransform(lr, lr); |
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((Graphics2D)g).transform(at);
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g.setColor(rectangleColor); |
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((Graphics2D)g).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.1f)); |
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g.fillRect((int)ul.getX(), (int)ul.getY(), (int)lr.getX(), (int)lr.getY()); |
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((Graphics2D)g).setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 1.0f)); |
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g.drawRect((int)ul.getX(), (int)ul.getY(), (int)lr.getX(), (int)lr.getY()); |
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((Graphics2D)g).transform(at.createInverse());
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} catch (NoninvertibleTransformException e1) { |
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RasterToolsUtil.messageBoxError("error_transformacion1", this, e1); |
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} |
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} |
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} |
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/**
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* Reimplementaci?n del m?todo mousePressed de Behavior. Si no est?
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* activo el cursor por defecto capturamos el punto seleccionado en
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* coordenadas del mundo real.
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*
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* @param e MouseEvent
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*/
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public void mousePressed(MouseEvent e) { |
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if (e.getButton() == MouseEvent.BUTTON1) { |
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ViewPort vp = grBehavior.getMapControl().getMapContext().getViewPort(); |
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beforePoint = vp.toMapPoint(e.getPoint()); |
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if(lyr == null) |
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lyr = grBehavior.getLayer(); |
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isShearing = true;
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} |
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} |
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/**
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* Reimplementaci?n del m?todo mouseReleased de Behavior. Desactivamos
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* los flags de redimensionado y a partir de la selecci?n del usuario
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* creamos un nuevo extent para la imagen. Con este extent creamos una nueva
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* capa que sustituir? a la anterior.
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*
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* @param e MouseEvent
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*
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* @throws BehaviorException Excepci?n lanzada cuando el Behavior.
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*/
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public void mouseReleased(MouseEvent e) throws BehaviorException { |
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if(e.getButton() == MouseEvent.BUTTON1) { |
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lyr.setAffineTransform(boxShear); |
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shearX = shearY = 0;
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grBehavior.getMapControl().getMapContext().invalidate(); |
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isShearing = false;
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super.mouseReleased(e);
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} |
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} |
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/**
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* Cuando arrastramos con el rat?n pulsado significa que estamos rotando la imagen. Para realizar la rotaci?n
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* medimos la distancia al punto inicial (desde el pto que estamos al pto donde se picho la primera vez). Esta distancia
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* nos da la velocidad de giro ya que si es grande es que lo habremos movido deprisa y si es peque?a habremos arrastrado
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* el rat?n despacio. Creamos una matriz de transformaci?n con la identidad y la rotaci?n que hemos medido aplicada. Al
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* final repintamos para que se pueda usar esta rotaci?n calculada en el repintado.
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*/
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public void mouseDragged(MouseEvent e) { |
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ViewPort vp = grBehavior.getMapControl().getMapContext().getViewPort(); |
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nextPoint = vp.toMapPoint(e.getPoint()); |
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if( (cornerActive[0] && (beforePoint.getY() >= nextPoint.getY())) || |
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(cornerActive[1] && (beforePoint.getY() < nextPoint.getY())) )
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shearY += incrShear; |
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if( (cornerActive[0] && (beforePoint.getY() < nextPoint.getY())) || |
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(cornerActive[1] && (beforePoint.getY() >= nextPoint.getY())) )
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shearY -= incrShear; |
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if( (cornerActive[2] && (beforePoint.getX() >= nextPoint.getX())) || |
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(cornerActive[3] && (beforePoint.getX() < nextPoint.getX())) )
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shearX += incrShear; |
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if( (cornerActive[2] && (beforePoint.getX() < nextPoint.getX())) || |
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(cornerActive[3] && (beforePoint.getX() >= nextPoint.getX())) )
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shearX -= incrShear; |
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beforePoint = vp.toMapPoint(e.getPoint()); |
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if(boxShear != null) |
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trIO.loadTransform(boxShear); |
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grBehavior.getMapControl().repaint(); |
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#setListener(org.gvsig.georeferencing.fmap.tools.ToolListener)
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*/
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public void setListener(ToolListener listener) { |
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this.listener = (RectangleListener) listener;
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} |
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/**
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* @see com.iver.cit.gvsig.fmap.tools.Behavior.Behavior#getListener()
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*/
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public ToolListener getListener() {
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return listener;
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} |
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/**
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* Cuando movemos el rat?n detecta si estamos en el marco de la
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* imagen y pone el icono del cursor del rat?n adecuado.
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*/
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public boolean mouseMoved(MouseEvent ev) throws BehaviorException { |
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if(!init)
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init(); |
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ViewPort vp = grBehavior.getMapControl().getMapContext().getViewPort(); |
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resetBorderSelected(); |
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lyr = grBehavior.getLayer(); |
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if(lyr == null) { |
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setActiveTool(false);
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return false; |
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} |
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AffineTransform atImg = lyr.getAffineTransform();
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//Pasar coordenadas del punto a coordenadas reales y luego a coordenadas pixel
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Point2D e = vp.toMapPoint(ev.getX(), ev.getY());
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try {
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atImg.inverseTransform(e, e); |
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} catch (NoninvertibleTransformException e1) { |
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return false; |
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} |
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//Comprobar si est? dentro del raster
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Point2D p1 = new Point2D.Double(0, 0); |
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Point2D p2 = new Point2D.Double(lyr.getDataSource().getWidth(), lyr.getDataSource().getHeight()); |
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//System.out.println("--->" + e.getX() + " , " + e.getY());
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//lateral derecho
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if (e.getY() > p1.getY() && e.getY() < p2.getY() && e.getX() > p2.getX() && e.getX() < (p2.getX() + PX_SELEC)) {
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setCursor(shearYImg); |
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setActiveTool(true);
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cornerActive[1] = true; |
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return true; |
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} |
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//lateral izquierdo
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if (e.getY() > p1.getY() && e.getY() < p2.getY() && e.getX() < p1.getX() && e.getX() > (p1.getX() - PX_SELEC)) {
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setCursor(shearYImg); |
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setActiveTool(true);
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cornerActive[0] = true; |
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return true; |
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} |
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//lateral superior
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if (e.getX() > p1.getX() && e.getX() < p2.getX() && e.getY() < p1.getY() && e.getY() > (p1.getX() - PX_SELEC)) {
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setCursor(shearXImg); |
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setActiveTool(true);
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cornerActive[3] = true; |
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return true; |
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} |
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//lateral inferior
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if (e.getX() > p1.getX() && e.getX() < p2.getX() && e.getY() > p2.getY() && e.getY() < (p2.getY() + PX_SELEC)) {
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setCursor(shearXImg); |
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setActiveTool(true);
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cornerActive[2] = true; |
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return true; |
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} |
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grBehavior.getMapControl().repaint(); |
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grBehavior.getMapControl().setCursor(defaultCursor); |
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return false; |
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} |
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/**
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* Pone a false todos los elementos del array sideActive. Esto es equivalente
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* a eliminar cualquier selecci?n de borde.
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*/
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private void resetBorderSelected() { |
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for (int i = 0; i < cornerActive.length; i++) |
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cornerActive[i] = false;
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} |
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} |