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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) 2004 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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 * For more information, contact:
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 *
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 *  Generalitat Valenciana
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 *   Conselleria d'Infraestructures i Transport
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 *   Av. Blasco Ib??ez, 50
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 *   46010 VALENCIA
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 *   SPAIN
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 *
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 *      +34 963862235
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 *   gvsig@gva.es
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 *      www.gvsig.gva.es
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 *
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 *    or
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 *
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 *   IVER T.I. S.A
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 *   Salamanca 50
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 *   46005 Valencia
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 *   Spain
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 *
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 *   +34 963163400
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 *   dac@iver.es
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 */
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package org.gvsig.fmap.geom.primitive.impl;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Arc2D;
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import java.awt.geom.Point2D;
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import java.awt.geom.Rectangle2D;
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import java.util.ArrayList;
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import org.cresques.cts.IProjection;
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import org.gvsig.fmap.geom.Geometry;
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import org.gvsig.fmap.geom.handler.AbstractHandler;
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import org.gvsig.fmap.geom.handler.CuadrantHandler;
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import org.gvsig.fmap.geom.handler.Handler;
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import org.gvsig.fmap.geom.primitive.Circle;
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import org.gvsig.fmap.geom.primitive.FShape;
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import org.gvsig.fmap.geom.primitive.GeneralPathX;
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import org.gvsig.fmap.geom.primitive.Point;
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import org.gvsig.fmap.geom.type.GeometryType;
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import org.gvsig.fmap.geom.util.UtilFunctions;
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/**
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 * DOCUMENT ME!
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 *
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 * @author Vicente Caballero Navarro
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 */
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public class Circle2D extends Surface2D implements Circle {
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        private static final long serialVersionUID = -2709867465161215668L;
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        private Point2D center;
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        private double radio;
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        /**
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         * The constructor with the GeometryType like and argument 
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         * is used by the {@link GeometryType}{@link #create()}
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         * to create the geometry
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         * @param type
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         * The geometry type
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         */
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        public Circle2D(GeometryType geometryType) {
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                super(geometryType);                
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        }
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        /**
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         * Constructor used in the {@link Geometry#cloneGeometry()} method
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         */
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        Circle2D(GeometryType geometryType, String id, IProjection projection, GeneralPathX gpx,
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                        Point2D c, double r) {
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                super(geometryType, id, projection, gpx);
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                center = c;
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                radio = r;
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        }
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        /*
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         * (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Circle#getCenter()
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         */
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        public Point getCenter() {
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                return new org.gvsig.fmap.geom.primitive.impl.Point2D(center.getX(), center.getY());
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        }
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    /*
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     * (non-Javadoc)
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     * @see org.gvsig.fmap.geom.primitive.impl.Surface2D#cloneFShape()
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     */
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        public FShape cloneFShape() {
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                return new Circle2D(getGeometryType(), id, projection, (GeneralPathX) gp.clone(), center,
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                                radio);
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        }
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        /*
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         * (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.impl.Surface2D#getShapeType()
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         */
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        public int getShapeType() {
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                return TYPES.CIRCLE;
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        }
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        /*
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         * (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.impl.OrientablePrimitive2D#transform(java.awt.geom.AffineTransform)
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         */
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        public void transform(AffineTransform at) {
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                Point2D pdist = UtilFunctions.getPerpendicularPoint(new Point2D.Double(
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                                center.getX() + 10, center.getY()), new Point2D.Double(center
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                                .getX() - 10, center.getY()), center, radio);
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                Point2D aux = new Point2D.Double();
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                at.transform(center, aux);
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                center = aux;
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                Point2D aux3 = new Point2D.Double();
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                at.transform(pdist, aux3);
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                radio = center.distance(aux3);
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                gp.transform(at);
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        }
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        /*
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         * (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.impl.OrientablePrimitive2D#getStretchingHandlers()
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         */
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        public Handler[] getStretchingHandlers() {
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                ArrayList handlers = new ArrayList();
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                Rectangle2D rect = this.getBounds2D();
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                handlers
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                                .add(new CenterHandler(0, rect.getCenterX(), rect.getCenterY()));
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                // handlers.add(new RadioHandler(1, rect.getX(), rect.getCenterY()));
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                // handlers.add(new RadioHandler(2, rect.getMaxX(), rect.getCenterY()));
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                // handlers.add(new RadioHandler(3, rect.getCenterX(), rect.getY()));
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                // handlers.add(new RadioHandler(3, rect.getCenterX(), rect.getMaxY()));
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                return (Handler[]) handlers.toArray(new Handler[0]);
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        }
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        /*
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         * (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.impl.OrientablePrimitive2D#getSelectHandlers()
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         */
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        public Handler[] getSelectHandlers() {
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                ArrayList handlers = new ArrayList();
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                handlers.add(new CenterSelHandler(0, center.getX(), center.getY()));
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                handlers.add(new RadioSelHandler(1, center.getX() - radio, center
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                                .getY()));
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                handlers.add(new RadioSelHandler(2, center.getX() + radio, center
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                                .getY()));
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                handlers.add(new RadioSelHandler(3, center.getX(), center.getY()
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                                - radio));
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                handlers.add(new RadioSelHandler(3, center.getX(), center.getY()
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                                + radio));
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                return (Handler[]) handlers.toArray(new Handler[0]);
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        }
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        /**
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         * DOCUMENT ME!
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         *
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         * @author Vicente Caballero Navarro
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         */
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        class CenterHandler extends AbstractHandler implements Handler, org.gvsig.fmap.geom.handler.CenterHandler{
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                /**
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                 * Crea un nuevo PointHandler.
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                 *
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                 * @param i
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                 *            DOCUMENT ME!
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                 * @param x
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                 *            DOCUMENT ME!
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                 * @param y
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                 *            DOCUMENT ME!
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                 */
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                public CenterHandler(int i, double x, double y) {
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                        point = new Point2D.Double(x, y);
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                        index = i;
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                }
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                /**
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                 * DOCUMENT ME!
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                 *
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                 * @param x
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                 *            DOCUMENT ME!
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                 * @param y
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                 *            DOCUMENT ME!
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                 *
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                 * @return DOCUMENT ME!
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                 */
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                public void move(double x, double y) {
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                        center = new Point2D.Double(center.getX() + x, center.getY() + y);
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                         Point point;
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                        for (int i = 0; i < gp.getNumCoords(); i++) {
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                            point = gp.getPointAt(i);
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                point.setX(point.getX() + x);
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                point.setY(point.getY() + y);
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                        }
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                }
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                /**
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                 * @see org.gvsig.fmap.geom.handler.Handler#set(double, double)
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                 */
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                public void set(double x, double y) {
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                }
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        }
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        /**
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         * DOCUMENT ME!
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         *
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         * @author Vicente Caballero Navarro
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         */
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        class CenterSelHandler extends AbstractHandler implements Handler, org.gvsig.fmap.geom.handler.CenterHandler {
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                /**
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                 * Crea un nuevo PointHandler.
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                 *
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                 * @param i
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                 *            DOCUMENT ME!
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                 * @param x
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                 *            DOCUMENT ME!
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                 * @param y
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                 *            DOCUMENT ME!
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                 */
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                public CenterSelHandler(int i, double x, double y) {
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                        point = new Point2D.Double(x, y);
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                        index = i;
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                }
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                /**
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                 * DOCUMENT ME!
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                 *
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                 * @param x
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                 *            DOCUMENT ME!
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                 * @param y
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                 *            DOCUMENT ME!
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                 *
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                 * @return DOCUMENT ME!
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                 */
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                public void move(double x, double y) {
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                    Point point;
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                    for (int i = 0; i < gp.getNumCoords() ; i++) {
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                            point = gp.getPointAt(i);
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                            point.setX(point.getX() + x);
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                    point.setY(point.getY() + y);
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                        }
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                }
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                /**
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                 * @see org.gvsig.fmap.geom.handler.Handler#set(double, double)
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                 */
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                public void set(double x, double y) {
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                        center = new Point2D.Double(x, y);
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                        Arc2D.Double arc = new Arc2D.Double(center.getX() - radio, center
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                                        .getY()
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                                        - radio, 2 * radio, 2 * radio, 0, 360, Arc2D.OPEN);
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                        gp = new GeneralPathX(arc.getPathIterator(null));
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                        gp.closePath();
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                }
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        }
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        /**
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         * DOCUMENT ME!
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         *
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         * @author Vicente Caballero Navarro
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         */
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        class RadioSelHandler extends AbstractHandler implements CuadrantHandler {
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                /**
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                 * Crea un nuevo PointHandler.
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                 *
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                 * @param i
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                 *            DOCUMENT ME!
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                 * @param x
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                 *            DOCUMENT ME!
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                 * @param y
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                 *            DOCUMENT ME!
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                 */
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                public RadioSelHandler(int i, double x, double y) {
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                        point = new Point2D.Double(x, y);
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                        index = i;
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                }
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                /**
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                 * DOCUMENT ME!
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                 *
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                 * @param x
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                 *            DOCUMENT ME!
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                 * @param y
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                 *            DOCUMENT ME!
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                 *
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                 * @return DOCUMENT ME!
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                 */
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                public void move(double x, double y) {
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                }
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                /**
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                 * @see org.gvsig.fmap.geom.handler.Handler#set(double, double)
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                 */
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                public void set(double x, double y) {
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                        radio = center.distance(x, y);
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                        Arc2D.Double arc = new Arc2D.Double(center.getX() - radio, center
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                                        .getY()
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                                        - radio, 2 * radio, 2 * radio, 0, 360, Arc2D.OPEN);
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                        gp = new GeneralPathX(arc.getPathIterator(null));
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                }
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        }
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        /*
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         * (non-Javadoc)
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         *
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         * @see com.iver.cit.gvsig.fmap.core.FPolyline2D#intersects(java.awt.geom.Rectangle2D)
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         */
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        public boolean intersects(Rectangle2D r) {
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                return gp.intersects(r);
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Surface2D#setGeneralPath(org.gvsig.fmap.geom.primitive.GeneralPathX)
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         */
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        public void setGeneralPath(GeneralPathX generalPathX) {
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                throw new UnsupportedOperationException("Use setPoints(Point center, Point radious)");
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Circle#setPoints(org.gvsig.fmap.geom.primitive.Point, org.gvsig.fmap.geom.primitive.Point)
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         */
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        public void setPoints(Point center, Point radious) {
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                Point2D _center = new java.awt.geom.Point2D.Double(center.getCoordinateAt(0), center.getCoordinateAt(1));
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                Point2D _radious = new java.awt.geom.Point2D.Double(radious.getCoordinateAt(0), radious.getCoordinateAt(1));
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                double dRadious = _center.distance(_radious);
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                setPoints(center, dRadious);
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        }
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        /*
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         * (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Circle#setPoints(org.gvsig.fmap.geom.primitive.Point, double)
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         */
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        public void setPoints(Point center, double radious){
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                Point2D _center = new java.awt.geom.Point2D.Double(center.getCoordinateAt(0), center.getCoordinateAt(1));
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                java.awt.geom.Arc2D.Double arc = 
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                        new java.awt.geom.Arc2D.Double(center.getX() - radious, _center
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                                .getY()
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                                - radious, 2 * radious, 2 * radious, 0, 360, Arc2D.OPEN);
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                this.gp = new GeneralPathX(arc.getPathIterator(null));
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                gp.closePath();
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                this.center = _center;
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                this.radio = radious;        
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Arc#setPoints(org.gvsig.fmap.geom.primitive.Point, org.gvsig.fmap.geom.primitive.Point, org.gvsig.fmap.geom.primitive.Point)
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         */
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        public void setPoints(Point p1, Point p2, Point p3) {
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                Point2D _p1 = new java.awt.geom.Point2D.Double(p1.getCoordinateAt(0), p1.getCoordinateAt(1));
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                Point2D _p2 = new java.awt.geom.Point2D.Double(p2.getCoordinateAt(0), p2.getCoordinateAt(1));
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                Point2D _p3 = new java.awt.geom.Point2D.Double(p3.getCoordinateAt(0), p3.getCoordinateAt(1));
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                setPoints(_p1, _p2, _p3);
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Circle#setPoints(org.gvsig.fmap.geom.primitive.Point2D, org.gvsig.fmap.geom.primitive.Point2D)
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         */
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        public void setPoints(org.gvsig.fmap.geom.primitive.impl.Point2D center,
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                        org.gvsig.fmap.geom.primitive.impl.Point2D radious) {
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                Point2D _center = new java.awt.geom.Point2D.Double(center.getCoordinateAt(0), center.getCoordinateAt(1));
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                Point2D _radious = new java.awt.geom.Point2D.Double(radious.getCoordinateAt(0), radious.getCoordinateAt(1));
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                setPoints(_center, _radious);                
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Circle#setPoints(org.gvsig.fmap.geom.primitive.Point2D, double)
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         */
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        public void setPoints(Point2D center,
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                        double radious) {
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                java.awt.geom.Arc2D.Double arc = 
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                        new java.awt.geom.Arc2D.Double(center.getX() - radious, center
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                                .getY()
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                                - radious, 2 * radious, 2 * radious, 0, 360, Arc2D.OPEN);
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                this.gp = new GeneralPathX(arc.getPathIterator(null));
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                gp.closePath();
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                this.center = center;
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                this.radio = radious;        
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Arc#setPoints(java.awt.geom.Point2D, java.awt.geom.Point2D, java.awt.geom.Point2D)
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         */
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        public void setPoints(Point2D p1, Point2D p2, Point2D p3) {
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                Point2D center = UtilFunctions.getCenter(p1, p2, p3);
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                if (center != null) {
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                        setPoints(center, p1);
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                }
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Curve#setCoordinateAt(int, int, double)
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         */
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        public void setCoordinateAt(int index, int dimension, double value) {
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                throw new UnsupportedOperationException("Use setGeneralPathX");
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Circle#setPoints(java.awt.geom.Point2D, java.awt.geom.Point2D)
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         */
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        private void setPoints(Point2D center, Point2D radious) {
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                double radio = center.distance(radious);
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                setPoints(center, radio);                
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Arc#setPoints(org.gvsig.fmap.geom.primitive.Point, double, double, double)
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         */
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        public void setPoints(Point center, double radius, double initAngle,
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                        double angleExt) {
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                throw new UnsupportedOperationException("Use setGeneralPathX");                
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Arc#setPoints(java.awt.geom.Point2D, double, double, double)
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         */
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        private void setPoints(Point2D center, double radius, double initAngle,
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                        double angleExt) {
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                throw new UnsupportedOperationException("Use setGeneralPathX");                
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        }
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        /* (non-Javadoc)
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         * @see org.gvsig.fmap.geom.primitive.Circle#getRadious()
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         */
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        public double getRadious() {
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                return radio;
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        }
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}