gvsig-raster / org.gvsig.raster / trunk / org.gvsig.raster / org.gvsig.raster.lib / org.gvsig.raster.lib.impl / src / main / java / org / gvsig / raster / impl / datastruct / ExtentImpl.java @ 4436
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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.datastruct; |
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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 java.awt.geom.Rectangle2D; |
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import java.text.DecimalFormat; |
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import org.cresques.cts.ICoordTrans; |
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import org.gvsig.fmap.dal.coverage.datastruct.Extent; |
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import org.gvsig.fmap.dal.coverage.datastruct.GridExtent; |
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import org.gvsig.raster.impl.grid.GridExtentImpl; |
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import org.gvsig.tools.ToolsLocator; |
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import org.gvsig.tools.dynobject.DynStruct; |
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import org.gvsig.tools.persistence.PersistenceManager; |
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import org.gvsig.tools.persistence.PersistentState; |
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import org.gvsig.tools.persistence.exception.PersistenceException; |
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/**
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* Clase que getiona el extent de una imagen
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*
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* @author Luis W.Sevilla (sevilla_lui@gva.es)
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*/
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public class ExtentImpl implements Extent { |
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public static final String PERSISTENT_NAME = "Extent_Persistent"; |
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public static final String PERSISTENT_DESCRIPTION = "Extent Persistent"; |
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Point2D min = null; |
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Point2D max = null; |
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Point2D ul = new Point2D.Double(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY); |
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Point2D lr = new Point2D.Double(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY); |
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Point2D ur = new Point2D.Double(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY); |
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Point2D ll = new Point2D.Double(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY); |
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/**
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* Constructor sin par?metros
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*/
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public ExtentImpl() {
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min = new Point2D.Double(999999999.0, 999999999.0); |
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max = new Point2D.Double(-999999999.0, -999999999.0); |
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} |
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/**
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* Constructor
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* @param ul punto que representa la esquina superior izquierda
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* @param lr punto que representa la esquina inferior derecha
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*/
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public ExtentImpl(Point2D ul, Point2D lr) { |
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this.ul = ul;
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this.lr = lr;
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newExtent(ul.getX(), ul.getY(), lr.getX(), lr.getY()); |
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} |
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/**
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* Constructor
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* @param ul punto que representa la esquina superior izquierda
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* @param lr punto que representa la esquina inferior derecha
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* @param ur punto que representa la esquina superior derecha
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* @param ll punto que representa la esquina inferior izquierda
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*/
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public ExtentImpl(Point2D ul, Point2D lr, Point2D ur, Point2D ll) { |
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this.ul = ul;
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this.lr = lr;
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this.ur = ur;
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this.ll = ll;
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min = new Point2D.Double( |
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Math.min(Math.min(ul.getX(), lr.getX()), Math.min(ur.getX(), ll.getX())), |
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Math.min(Math.min(ul.getY(), lr.getY()), Math.min(ur.getY(), ll.getY()))); |
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max = new Point2D.Double( |
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Math.max(Math.max(ul.getX(), lr.getX()), Math.max(ur.getX(), ll.getX())), |
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Math.max(Math.max(ul.getY(), lr.getY()), Math.max(ur.getY(), ll.getY()))); |
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} |
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/**
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* Contructor
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* @param x1 punto que representa la coordenada X de la esquina superior izquierda
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* @param y1 punto que representa la coordenada Y de la esquina superior izquierda
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* @param x2 punto que representa la coordenada X de la esquina inferior derecha
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* @param y2 punto que representa la coordenada Y de la esquina inferior derecha
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*/
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public ExtentImpl(double x1, double y1, double x2, double y2) { |
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ul.setLocation(x1, y1); |
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lr.setLocation(x2, y2); |
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newExtent(x1, y1, x2, y2); |
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} |
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/**
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* Constructor
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* @param r Rectangulo 2D
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*/
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public ExtentImpl(Rectangle2D r) { |
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ul.setLocation(r.getX(), r.getY() + r.getHeight()); |
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lr.setLocation(r.getX() + r.getWidth(), r.getY()); |
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newExtent(r.getX(), r.getY(), r.getX() + r.getWidth(), |
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r.getY() + r.getHeight()); |
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} |
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/**
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* Constructor de copia
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* @param ext Objeto Extent
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*/
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public ExtentImpl(Extent ext) {
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ul.setLocation(ext.getULX(), ext.getULY()); |
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lr.setLocation(ext.getLRX(), ext.getLRY()); |
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ur.setLocation(ext.getURX(), ext.getURY()); |
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ll.setLocation(ext.getLLX(), ext.getLLY()); |
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min = new Point2D.Double(ext.minX(), ext.minY()); |
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max = new Point2D.Double(ext.maxX(), ext.maxY()); |
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} |
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public Extent encloseBoundinBoxes(Extent ext) {
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Point2D pUl = new Point2D.Double( |
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Math.min(getULX(), ext.getULX()),
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Math.max(getULY(), ext.getULY()));
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Point2D pLr = new Point2D.Double( |
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Math.max(getLRX(), ext.getLRX()),
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Math.min(getLRY(), ext.getLRY()));
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return new ExtentImpl(pUl, pLr); |
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} |
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public Extent intersection(Extent ext) {
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if(intersects(ext)) {
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Point2D pUl = new Point2D.Double( |
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Math.max(getULX(), ext.getULX()),
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Math.min(getULY(), ext.getULY()));
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Point2D pLr = new Point2D.Double( |
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Math.min(getLRX(), ext.getLRX()),
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Math.max(getLRY(), ext.getLRY()));
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return new ExtentImpl(pUl, pLr); |
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} |
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return null; |
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} |
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public boolean intersects(Extent ext) { |
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if (getMin().getX() > ext.getMax().getX())
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return false; |
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else if (getMax().getX() < ext.getMin().getX()) |
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return false; |
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if (getMin().getY() > ext.getMax().getY())
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return false; |
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else if (getMax().getY() < ext.getMin().getY()) |
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return false; |
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return true; |
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} |
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public GridExtent getGridExtent(double cellSize) { |
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return new GridExtentImpl(this, cellSize); |
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} |
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public Extent clone() {
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ExtentImpl e = new ExtentImpl();
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e.min = min != null ? (Point2D) min.clone() : null; |
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e.max = max != null ? (Point2D) max.clone() : null; |
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e.ul = ul != null ? (Point2D) ul.clone() : null; |
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e.lr = lr != null ? (Point2D) lr.clone() : null; |
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e.ur = ur != null ? (Point2D) ur.clone() : null; |
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e.ll = ll != null ? (Point2D) ll.clone() : null; |
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return e;
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} |
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private void newExtent(double x1, double y1, double x2, double y2) { |
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min = new Point2D.Double(Math.min(x1, x2), Math.min(y1, y2)); |
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max = new Point2D.Double(Math.max(x1, x2), Math.max(y1, y2)); |
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} |
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/**
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* Obtiene la coordenada X m?nima
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* @return valor de la coordenada X m?nima
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*/
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public double minX() { |
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return min.getX();
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} |
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/**
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* Obtiene la coordenada Y m?nima
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* @return valor de la coordenada X m?nima
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*/
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public double minY() { |
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return min.getY();
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} |
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/**
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* Obtiene la coordenada X m?xima
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* @return valor de la coordenada X m?xima
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*/
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public double maxX() { |
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return max.getX();
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} |
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/**
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* Obtiene la coordenada Y m?xima
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* @return valor de la coordenada Y m?xima
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*/
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public double maxY() { |
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return max.getY();
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} |
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/**
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* Obtiene el punto m?nimo
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* @return m?nimo
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*/
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public Point2D getMin() { |
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return min;
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} |
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/**
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* Obtiene el punto m?ximo
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* @return m?ximo
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*/
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public Point2D getMax() { |
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return max;
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} |
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public boolean isAt(Point2D pt) { |
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if (pt.getX() < minX())
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return false; |
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if (pt.getX() > maxX())
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return false; |
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if (pt.getY() < minY())
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return false; |
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if (pt.getY() > maxY())
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return false; |
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return true; |
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} |
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public double width() { |
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return Math.abs(maxX() - minX()); |
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} |
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public double height() { |
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return Math.abs(maxY() - minY()); |
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} |
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/**
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* Obtiene el centro en X del extent
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* @return coordinate X of center
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*/
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public double getCenterX() { |
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return minX() + (width() / 2); |
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} |
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/**
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* Obtiene el centro en Y del extent
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* @return coordinate Y of center
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*/
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public double getCenterY() { |
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return minY() + (height() / 2); |
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} |
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/**
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* Verifica un punto, y modifica el extent si no est? incluido
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* @param pt
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*/
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public void add(Point2D pt) { |
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if (pt == null) { |
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return;
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} |
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min.setLocation(Math.min(pt.getX(), minX()), Math.min(pt.getY(), minY())); |
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max.setLocation(Math.max(pt.getX(), maxX()), Math.max(pt.getY(), maxY())); |
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} |
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public void add(Extent ext) { |
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if (ext == null) { |
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return;
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} |
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min.setLocation(Math.min(ext.minX(), minX()),
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Math.min(ext.minY(), minY()));
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max.setLocation(Math.max(ext.maxX(), maxX()),
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Math.max(ext.maxY(), maxY()));
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} |
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/**
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* Obtiene la escala
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* @param width Ancho
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* @param height Alto
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* @return the scale
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*/
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public double[] getScale(int width, int height) { |
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return getScale((double) width, (double) height); |
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} |
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public double[] getScale(double width, double height) { |
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double[] scale = new double[2]; |
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scale[0] = ((float) width) / width(); |
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scale[1] = ((float) height) / height(); |
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return scale;
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} |
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public Rectangle2D toRectangle2D() { |
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return new Rectangle2D.Double(minX(), minY(), width(), height()); |
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} |
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public String toString() { |
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DecimalFormat format = new DecimalFormat("####.000"); |
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return "Extent: (" + format.format(minX()) + "," + |
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format.format(minY()) + "), (" + format.format(maxX()) + "," + |
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format.format(maxY()) + ")";
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} |
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public interface Has { |
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public Extent getExtent();
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} |
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public Point2D getUL() { |
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return (Point2D)ul.clone(); |
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} |
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public Point2D getLR() { |
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return (Point2D)lr.clone(); |
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} |
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/**
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* Obtiene la coordenada X de la esquina superior izquierda. Esta, en condiciones normales
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* conincide con el minimo en X pero cuando un raster est? rotado esto puede variar.
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* @return ulx
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*/
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public double getULX() { |
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if(ul.getX() == -999999999.0) |
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return minX();
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return ul.getX();
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} |
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/**
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* Obtiene la coordenada Y de la esquina superior izquierda. Esta, en condiciones normales
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* conincide con el maximo en Y pero cuando un raster est? rotado esto puede variar.
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* @return uly
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*/
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public double getULY() { |
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if(ul.getY() == -999999999.0) |
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return maxY();
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return ul.getY();
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} |
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/**
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* Obtiene la coordenada X de la esquina inferior derecha. Esta, en condiciones normales
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* conincide con el m?ximo en X pero cuando un raster est? rotado esto puede variar.
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* @return lrx
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*/
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public double getLRX() { |
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if(lr.getX() == -999999999.0) |
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return maxX();
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return lr.getX();
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} |
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/**
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* Obtiene la coordenada Y de la esquina inferior derecha. Esta, en condiciones normales
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* conincide con el minimo en Y pero cuando un raster est? rotado esto puede variar.
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* @return lry
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*/
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public double getLRY() { |
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if(lr.getY() == -999999999.0) |
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return minY();
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return lr.getY();
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} |
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/**
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* Obtiene la coordenada X de la esquina superior derecha.
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* @return urx
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*/
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public double getURX() { |
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return ur.getX();
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} |
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/**
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* Obtiene la coordenada Y de la esquina superior derecha.
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* @return uly
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*/
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public double getURY() { |
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return ur.getY();
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} |
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/**
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* Obtiene la coordenada X de la esquina inferior izquierda.
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* @return lrx
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*/
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public double getLLX() { |
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return ll.getX();
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} |
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/**
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* Obtiene la coordenada Y de la esquina inferior izquierda.
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* @return lly
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*/
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public double getLLY() { |
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return ll.getY();
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} |
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/**
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* Asigna la coordenada X de la esquina superior izquierda al m?nimo X
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*/
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public void setULXToMin() { |
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ul.setLocation(minX(), ul.getY()); |
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lr.setLocation(maxX(), lr.getY()); |
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} |
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/**
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* Asigna la coordenada X de la esquina superior izquierda al m?ximo X
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*/
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public void setULXToMax() { |
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ul.setLocation(maxX(), ul.getY()); |
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lr.setLocation(minX(), lr.getY()); |
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} |
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/**
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* Asigna la coordenada Y de la esquina superior izquierda al m?nimo Y
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*/
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public void setULYToMin() { |
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ul.setLocation(ul.getX(), minY()); |
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lr.setLocation(lr.getX(), maxY()); |
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} |
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/**
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* Asigna la coordenada Y de la esquina superior izquierda al m?ximo Y
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*/
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public void setULYToMax() { |
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ul.setLocation(ul.getX(), maxY()); |
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lr.setLocation(lr.getX(), minY()); |
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} |
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|
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/**
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* Asigna la coordenada X de la esquina inferior derecha al m?nimo X
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*/
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public void setLRXToMin() { |
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lr.setLocation(minX(), lr.getY()); |
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ul.setLocation(maxX(), ul.getY()); |
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} |
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/**
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* Asigna la coordenada X de la esquina inferior derecha al m?ximo X
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*/
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public void setLRXToMax() { |
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lr.setLocation(maxX(), lr.getY()); |
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ul.setLocation(minX(), ul.getY()); |
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} |
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|
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/**
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* Asigna la coordenada Y de la esquina inferior derecha al m?nimo Y
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*/
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public void setLRYToMin() { |
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lr.setLocation(lr.getX(), minY()); |
| 473 |
ul.setLocation(ul.getX(), maxX()); |
| 474 |
} |
| 475 |
|
| 476 |
/**
|
| 477 |
* Asigna la coordenada Y de la esquina inferior derecha al m?ximo Y
|
| 478 |
*/
|
| 479 |
public void setLRYToMax() { |
| 480 |
lr.setLocation(lr.getX(), maxY()); |
| 481 |
ul.setLocation(ul.getX(), minY()); |
| 482 |
} |
| 483 |
|
| 484 |
public Extent convert(ICoordTrans trans) {
|
| 485 |
Rectangle2D rect = new Rectangle2D.Double(getURX(), getLRY(), width(), height()); |
| 486 |
Rectangle2D rectDest = trans.convert(rect);
|
| 487 |
if (rectDest == null){ |
| 488 |
return null; |
| 489 |
} |
| 490 |
|
| 491 |
return new ExtentImpl( |
| 492 |
rectDest.getMinX(), |
| 493 |
rectDest.getMaxY(), |
| 494 |
rectDest.getMaxX(), |
| 495 |
rectDest.getMinY()); |
| 496 |
} |
| 497 |
|
| 498 |
public boolean equals(Object obj) { |
| 499 |
if(!(obj instanceof Extent)) |
| 500 |
return false; |
| 501 |
Extent e1 = (Extent)obj; |
| 502 |
return (this.getULX() == e1.getULX() && |
| 503 |
this.getULY() == e1.getULY() &&
|
| 504 |
this.getLRX() == e1.getLRX() &&
|
| 505 |
this.getLRY() == e1.getLRY() &&
|
| 506 |
this.getURX() == e1.getURX() &&
|
| 507 |
this.getURY() == e1.getURY() &&
|
| 508 |
this.getLLX() == e1.getLLX() &&
|
| 509 |
this.getLLY() == e1.getLLY());
|
| 510 |
} |
| 511 |
|
| 512 |
/**
|
| 513 |
* Given a cell size, converts a point in raster coordinates to world coordinates
|
| 514 |
* @param pt Point to transform
|
| 515 |
*/
|
| 516 |
public Point2D rasterToWorld(Point2D pt, double cellsize) { |
| 517 |
Point2D p = new Point2D.Double(); |
| 518 |
AffineTransform at = new AffineTransform(cellsize, 0, 0, -cellsize, getULX(), getULY()); |
| 519 |
at.transform(pt, p); |
| 520 |
return p;
|
| 521 |
} |
| 522 |
|
| 523 |
/**
|
| 524 |
* Given a cell size, converts a point in world coordinates to pixel coordinates
|
| 525 |
* @param pt Point to transform
|
| 526 |
*/
|
| 527 |
public Point2D worldToRaster(Point2D pt, double cellsize) { |
| 528 |
Point2D p = new Point2D.Double(); |
| 529 |
AffineTransform at = new AffineTransform(cellsize, 0, 0, -cellsize, getULX(), getULY()); |
| 530 |
try {
|
| 531 |
at.inverseTransform(pt, p); |
| 532 |
} catch (NoninvertibleTransformException e) { |
| 533 |
return pt;
|
| 534 |
} |
| 535 |
return p;
|
| 536 |
} |
| 537 |
|
| 538 |
public void loadFromState(PersistentState state) |
| 539 |
throws PersistenceException {
|
| 540 |
double ulx = state.getDouble("ulx"); |
| 541 |
double uly = state.getDouble("uly"); |
| 542 |
double lrx = state.getDouble("lrx"); |
| 543 |
double lry = state.getDouble("lry"); |
| 544 |
double urx = state.getDouble("urx"); |
| 545 |
double ury = state.getDouble("ury"); |
| 546 |
double llx = state.getDouble("llx"); |
| 547 |
double lly = state.getDouble("lly"); |
| 548 |
ul.setLocation(ulx, uly); |
| 549 |
lr.setLocation(lrx, lry); |
| 550 |
ur.setLocation(urx, ury); |
| 551 |
ll.setLocation(llx, lly); |
| 552 |
if( ur.getX() != Double.POSITIVE_INFINITY && |
| 553 |
ur.getY() != Double.POSITIVE_INFINITY &&
|
| 554 |
ll.getX() != Double.POSITIVE_INFINITY &&
|
| 555 |
ll.getY() != Double.POSITIVE_INFINITY) {
|
| 556 |
min = new Point2D.Double( |
| 557 |
Math.min(Math.min(ul.getX(), lr.getX()), Math.min(ur.getX(), ll.getX())), |
| 558 |
Math.min(Math.min(ul.getY(), lr.getY()), Math.min(ur.getY(), ll.getY()))); |
| 559 |
max = new Point2D.Double( |
| 560 |
Math.max(Math.max(ul.getX(), lr.getX()), Math.max(ur.getX(), ll.getX())), |
| 561 |
Math.max(Math.max(ul.getY(), lr.getY()), Math.max(ur.getY(), ll.getY()))); |
| 562 |
} else {
|
| 563 |
newExtent(ulx, uly, lrx, lry); |
| 564 |
} |
| 565 |
} |
| 566 |
|
| 567 |
public void saveToState(PersistentState state) throws PersistenceException { |
| 568 |
state.set("ulx", getULX());
|
| 569 |
state.set("uly", getULY());
|
| 570 |
state.set("lrx", getLRX());
|
| 571 |
state.set("lry", getLRY());
|
| 572 |
state.set("urx", getURX());
|
| 573 |
state.set("ury", getURY());
|
| 574 |
state.set("llx", getLLX());
|
| 575 |
state.set("lly", getLLY());
|
| 576 |
} |
| 577 |
|
| 578 |
public static void registerPersistence() { |
| 579 |
PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
| 580 |
DynStruct definition = manager.getDefinition(PERSISTENT_NAME); |
| 581 |
if( definition == null ) { |
| 582 |
definition = manager.addDefinition( |
| 583 |
Extent.class, |
| 584 |
PERSISTENT_NAME, |
| 585 |
PERSISTENT_DESCRIPTION, |
| 586 |
null,
|
| 587 |
null
|
| 588 |
); |
| 589 |
|
| 590 |
definition.addDynFieldDouble("ulx").setMandatory(true); |
| 591 |
definition.addDynFieldDouble("uly").setMandatory(true); |
| 592 |
definition.addDynFieldDouble("lrx").setMandatory(true); |
| 593 |
definition.addDynFieldDouble("lry").setMandatory(true); |
| 594 |
definition.addDynFieldDouble("urx").setMandatory(false); |
| 595 |
definition.addDynFieldDouble("ury").setMandatory(false); |
| 596 |
definition.addDynFieldDouble("llx").setMandatory(false); |
| 597 |
definition.addDynFieldDouble("lly").setMandatory(false); |
| 598 |
} |
| 599 |
} |
| 600 |
|
| 601 |
protected void finalize() throws Throwable { |
| 602 |
min = null;
|
| 603 |
max = null;
|
| 604 |
ul = null;
|
| 605 |
lr = null;
|
| 606 |
ur = null;
|
| 607 |
ll = null;
|
| 608 |
super.finalize();
|
| 609 |
} |
| 610 |
} |