Application: gvSIG desktop

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2006 Instituto de Desarrollo Regional and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   Instituto de Desarrollo Regional (Universidad de Castilla La-Mancha)

 *   Campus Universitario s/n

 *   02071 Alabacete

 *   Spain

 *

 *   +34 967 599 200

 */

package org.gvsig.crs;

import java.awt.geom.Point2D;

import java.awt.geom.Rectangle2D;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.gvsig.crs.proj.CrsProj;

import org.gvsig.crs.proj.JNIBaseCrs;

import org.gvsig.crs.proj.OperationCrsException;

import com.iver.andami.messages.NotificationManager;

/**

 * Clase que implementa las operaciones de conversi?n y transformaci?n 

 * de coordenadas entre CRSs.

 * 

 * @author Miguel Garc?a Jim?nez (garciajimenez.miguel@gmail.com)

 * @author Diego Guerrero Sevilla (diego.guerrero@uclm.es)

 *

 */

public class COperation implements ICOperation {

        private Crs sourceCrs;

        private Crs targetCrs;

        private CrsProj nadCrsProj = null;

        private boolean nadInTarget;

        public COperation(ICrs from, ICrs to) throws CrsException {

                sourceCrs = (Crs) from;

                targetCrs = (Crs) to;

        }

        public ICrs getSource() {

                return sourceCrs;

        }

        public ICrs getTarget() {

                return targetCrs;

        }

        public Point2D operate(Point2D pt) throws CrsException {

                double x[] = {pt.getX()};

                double y[] = {pt.getY()};

                double z[] = {0D};

                int errno = 0;

                try {

                        if (nadCrsProj != null){

                                if (nadInTarget)

                                        errno = JNIBaseCrs.operate( x , y, z,sourceCrs.getCrsProj(), nadCrsProj);

                                else

                                        errno = JNIBaseCrs.operate( x , y, z,nadCrsProj,targetCrs.getCrsProj());

                                if (errno != -38)

                                        return new Point2D.Double(x[0],y[0]);

                        }

                        // Si el punto estaba fuera del ?mbito del nadgrid operamos sin nadgrid (convertimos)

                        x[0] = pt.getX();

                        y[0] = pt.getY();

                        z[0] = 0D;

                        errno = JNIBaseCrs.operate( x , y, z,sourceCrs.getCrsProj(), targetCrs.getCrsProj());

                        return new Point2D.Double(x[0],y[0]);

                } catch (OperationCrsException e) {

                        throw new CrsException(e);

                }

        //        System.out.println("x="+x[0]+"y="+y[0]);

        //        if(!targetCrs.isProjected())

        //                return new Point2D.Double(x[0]*((180)/Math.PI),y[0]*((180)/Math.PI));

        //        else

        }

        public double [] operate(double []ptOrig) throws CrsException {

                double x[] = {ptOrig[0]};

                double y[] = {ptOrig[1]};

                double z[] = {ptOrig[2]};

                int errno = 0;

                try {

                        if (nadCrsProj != null){

                                if (nadInTarget)

                                        errno = JNIBaseCrs.operate( x , y, z,sourceCrs.getCrsProj(), nadCrsProj);

                                else

                                        errno = JNIBaseCrs.operate( x , y, z,nadCrsProj,targetCrs.getCrsProj());

                                if (errno != -38){

                                        double ptDest[] = {x[0], y[0], z[0]};

                                        return ptDest;

                                }

                        }

                        // Si el punto estaba fuera del ?mbito del nadgrid operamos sin nadgrid (convertimos)

                         x[0] = ptOrig[0];

                         y[0] = ptOrig[1];

                         z[0] = ptOrig[2];

                         JNIBaseCrs.operate(x, y, z,sourceCrs.getCrsProj(), targetCrs.getCrsProj());

                         double ptDest[] = {x[0], y[0], z[0]};

                         return ptDest;

                } catch (OperationCrsException e) {

                        throw new CrsException(e);

                }

        }

        public IProjection getPOrig() {

                return null;

        }

        public IProjection getPDest() {

                return null;

        }

        public Point2D convert(Point2D ptOrig, Point2D ptDest) {

                try {

                        ptDest = operate(ptOrig);

                } catch (CrsException e) {

                        // TODO LWS implementar una gesti?n completa de los errores.

                        NotificationManager.addError(e);

                }

                return ptDest;

        }

        public Rectangle2D convert(Rectangle2D rect) {

                Point2D pt1 = new Point2D.Double(rect.getMinX(), rect.getMinY());

                Point2D pt2 = new Point2D.Double(rect.getMaxX(), rect.getMaxY());

                try {

                        pt1 = operate(pt1);

                        pt2 = operate(pt2);

                } catch (CrsException e) {

                        // TODO LWS implementar una gesti?n completa de los errores.

                        e.printStackTrace();

                }

                rect = new Rectangle2D.Double();

                rect.setFrameFromDiagonal(pt1, pt2);

                return rect;

        }

        public ICoordTrans getInverted() {

                try {

                        return new COperation(targetCrs, sourceCrs);

                } catch (CrsException e) {

                        e.printStackTrace();

                }

                return null;

        }

        public void setNadCrsProj(CrsProj nadCrs, boolean inTarget){

                this.nadInTarget = inTarget;

                this.nadCrsProj = nadCrs;

        }

}