Application: gvSIG desktop

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2015 gvSIG Association

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.fmap.geom.jts.primitive.ring;

import java.util.Iterator;

import com.vividsolutions.jts.geom.Coordinate;

import com.vividsolutions.jts.geom.GeometryFactory;

import com.vividsolutions.jts.geom.LinearRing;

import com.vividsolutions.jts.geomgraph.Position;

import com.vividsolutions.jts.operation.buffer.BufferParameters;

import com.vividsolutions.jts.operation.buffer.OffsetCurveBuilder;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryException;

import org.gvsig.fmap.geom.aggregate.MultiLine;

import org.gvsig.fmap.geom.aggregate.MultiPolygon;

import org.gvsig.fmap.geom.jts.GeometryJTS;

import org.gvsig.fmap.geom.jts.aggregate.MultiLine2D;

import org.gvsig.fmap.geom.jts.aggregate.MultiPolygon2D;

import org.gvsig.fmap.geom.jts.primitive.curve.line.BaseLine2D;

import org.gvsig.fmap.geom.jts.primitive.curve.line.Line2D;

import org.gvsig.fmap.geom.jts.primitive.surface.polygon.Polygon2D;

import org.gvsig.fmap.geom.jts.util.JTSUtils;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;

import org.gvsig.fmap.geom.primitive.Polygon;

import org.gvsig.fmap.geom.primitive.Ring;

/**

 * @author fdiaz

 *

 */

public class Ring2D extends BaseLine2D implements Ring {

    /**

     *

     */

    private static final long serialVersionUID = 6640426694359410404L;

    /**

     * @param subtype

     */

    public Ring2D() {

        super(Geometry.TYPES.RING);

    }

    /**

     *

     */

    public Ring2D(Coordinate[] coordinates) {

        super(Geometry.TYPES.RING, coordinates);

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.Geometry#cloneGeometry()

     */

    public Geometry cloneGeometry() {

        return new Ring2D(cloneCoordinates().toCoordinateArray());

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.primitive.Line#toLines()

     */

    public MultiLine toLines() throws GeometryException {

        MultiLine multiLine = new MultiLine2D();

        multiLine.addPrimitive(new Line2D(coordinates.toCoordinateArray()));

        return multiLine;

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.primitive.Line#toPolygons()

     */

    public MultiPolygon toPolygons() throws GeometryException {

        MultiPolygon multiPolygon = new MultiPolygon2D();

        multiPolygon.addPrimitive(new Polygon2D(coordinates.toCoordinateArray()));

        return multiPolygon;

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.fmap.geom.jts.GeometryJTS#getJTS()

     */

    public com.vividsolutions.jts.geom.Geometry getJTS() {

        return JTSUtils.createJTSLinearRing(coordinates);

    }

    /* (non-Javadoc)

    * @see org.gvsig.fmap.geom.Geometry#offset(double)

    */

      public Geometry offset(double distance) throws GeometryOperationNotSupportedException, GeometryOperationException {

          com.vividsolutions.jts.geom.LinearRing jtsRing = (LinearRing) getJTS();

          GeometryFactory factory = jtsRing.getFactory();

          BufferParameters bufParams = JTSUtils.getBufferParameters();

          OffsetCurveBuilder ocb = new OffsetCurveBuilder(factory.getPrecisionModel(), bufParams);

          Coordinate[] coordinates = jtsRing.getCoordinates();

          Coordinate[] coords = ocb.getRingCurve(coordinates, Position.LEFT, distance); // .getOffsetCurve(coordinates,

          return new Ring2D(coords);

      }

}