Application: gvSIG desktop

package org.gvsig.fmap.drivers.gpe.model;

import java.util.ArrayList;

import com.iver.cit.gvsig.fmap.core.FPolyline3D;

import com.iver.cit.gvsig.fmap.core.GeneralPathX;

import com.iver.cit.gvsig.fmap.core.Handler;

import com.iver.cit.gvsig.fmap.core.IGeometry;

import com.iver.cit.gvsig.fmap.core.ShapeFactory;

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

 *

 * Copyright (C) 2004 IVER T.I. 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

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

 *

 * $Id$

 * $Log$

 *

 */

/**

 * @author Jorge Piera LLodr? (jorge.piera@iver.es)

 */

public class GPECurve extends GPEGeometry{

        private ArrayList segments = null;

        public GPECurve(String id, IGeometry geometry, String srs) {

                super(id, geometry, srs);                

                segments = new ArrayList();

        }

        public GPECurve(String id, String srs) {

                this(id, null, srs);                

        }

        /**

         * Adds a segment 

         * @param segment

         * The segment to add

         */

        public void addSegment(GPEGeometry segment){

                segments.add(segment);

        }

        /**

         * Gets a segment

         * @param i

         * The segment position

         * @return

         * A Segment

         */

        public GPEGeometry getSegmentAt(int i){

                return (GPEGeometry)segments.get(i);

        }

        /**

         * @return the number of seg

         */

        public int getSegmentsSize(){

                return segments.size();

        }

        /**

         * @return the geometry

         */

        public IGeometry getIGeometry() {

                IGeometry geom = super.getIGeometry();

                if (geom != null){

                        return geom;

                }

                GeneralPathX gpx = new GeneralPathX();

                int zLength = 0;

                boolean startPoint = true;

                for (int i=0 ; i<segments.size() ; i++){

                        IGeometry segment = ((GPEGeometry)segments.get(i)).getIGeometry();

                        Handler[] handlers = ((FPolyline3D)segment.getInternalShape()).getSelectHandlers();

                        zLength = zLength + handlers.length;

                        for (int j=0 ; j<handlers.length ; j++){

                                if (startPoint){

                                        gpx.moveTo(handlers[j].getPoint().getX(),

                                                        handlers[j].getPoint().getY());

                                        startPoint = false;

                                }else{

                                        gpx.lineTo(handlers[j].getPoint().getX(),

                                                        handlers[j].getPoint().getY());

                                }

                        }

                }

                //Copy the z coordinate

                double[] z = new double[zLength];

                int k = 0;

                for (int i=0 ; i<segments.size() ; i++){

                        IGeometry segment = ((GPEGeometry)segments.get(i)).getIGeometry();

                        double[] zAux = ((FPolyline3D)segment.getInternalShape()).getZs();

                        System.arraycopy(zAux, 0, z, k, zAux.length);

                        k = k + zAux.length;

                }

                geometry = ShapeFactory.createPolyline3D(gpx, z);

                return geometry;

        }        

}