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.aggregate;

import java.awt.Shape;

import java.awt.geom.AffineTransform;

import java.awt.geom.PathIterator;

import java.util.Collections;

import java.util.Iterator;

import org.gvsig.fmap.geom.Geometry;

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

import org.gvsig.fmap.geom.jts.gputils.DefaultGeneralPathX;

import org.gvsig.fmap.geom.jts.gputils.GeneralPathXIterator;

import org.gvsig.fmap.geom.jts.primitive.point.PointJTS;

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

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.GeneralPathX;

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

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

/**

 * @author fdiaz

 *

 */

public abstract class AbstractMultiPoint extends AbstractMultiPrimitive implements MultiPoint {

    /**

     *

     */

    private static final long serialVersionUID = 7056816718895043774L;

    /**

     * @param subtype

     */

    public AbstractMultiPoint(int subtype) {

        super(Geometry.TYPES.MULTIPOINT, subtype);

    }

    @Override

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

        ArrayListCoordinateSequence coordinateSequence = new ArrayListCoordinateSequence();

        for (Iterator<Primitive> iterator = primitives.iterator(); iterator.hasNext();) {

            PointJTS point = (PointJTS) iterator.next();

            coordinateSequence.add(point.getJTSCoordinate());

        }

        return JTSUtils.createJTSMultiPoint(coordinateSequence);

    }

    @Override

    public Geometry force2D() throws GeometryOperationNotSupportedException, GeometryOperationException {

        MultiPoint2D other = new MultiPoint2D();

        other.setProjection(this.getProjection());

        other.ensureCapacity(primitives.size());

        for (Primitive primitive : primitives) {

            other.addPrimitive((Primitive)primitive.force2D());

        }

        return other;

    }

    @Override

    public void addPoint(Point point) {

        point = fixPoint(point);

        primitives.add(point);

    }

    @Override

    public Point getPointAt(int index) {

        return (Point)primitives.get(index);

    }

    @Override

    public Shape getShape(AffineTransform affineTransform) {

        return new DefaultGeneralPathX(getPathIterator(affineTransform),false,0);

    }

    @Override

    public Shape getShape() {

        return new DefaultGeneralPathX(getPathIterator(null),false,0);

    }

    @Override

    public PathIterator getPathIterator(AffineTransform at) {

        PointIterator pi = new PointIterator(at);

        return pi;

    }

    @Override

    public PathIterator getPathIterator(AffineTransform at, double flatness) {

        return getPathIterator(at);

    }

    protected class PointIterator extends GeneralPathXIterator {

        /** Transform applied on the coordinates during iteration */

        private final AffineTransform at;

        /** True when the point has been read once */

        private boolean done;

        private int index = 0;

        public PointIterator(AffineTransform at) {

            super(new GeneralPathX());

            if (at == null) {

                at = new AffineTransform();

            }

            this.at = at;

            done = false;

        }

        /**

         * Return the winding rule for determining the interior of the path.

         *

         * @return <code>WIND_EVEN_ODD</code> by default.

         */

        @Override

        public int getWindingRule() {

            return PathIterator.WIND_EVEN_ODD;

        }

        /**

         * @see java.awt.geom.PathIterator#next()

         */

        @Override

        public void next() {

            done = (primitives.size() == ++index);

        }

        /**

         * @return 

         * @see java.awt.geom.PathIterator#isDone()

         */

        @Override

        public boolean isDone() {

            return done;

        }

        /**

         * @return 

         * @see java.awt.geom.PathIterator#currentSegment(double[])

         */

        @Override

        public int currentSegment(double[] coords) {

            Point point = (Point) primitives.get(index);

            coords[0] = point.getX();

            coords[1] = point.getY();

            at.transform(coords, 0, coords, 0, 1);

            return PathIterator.SEG_MOVETO;

        }

        /*

         * @see java.awt.geom.PathIterator#currentSegment(float[])

         */

        @Override

        public int currentSegment(float[] coords) {

            Point point = (Point) primitives.get(index);

            coords[0] = (float)point.getX();

            coords[1] = (float)point.getY();

            at.transform(coords, 0, coords, 0, 1);

            return PathIterator.SEG_MOVETO;

        }

    }

    @Override

    public void flip() throws GeometryOperationNotSupportedException, GeometryOperationException {

        Collections.reverse(primitives);

    }

    @Override

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

        return JTSUtils.createGeometry(this.getProjection(), getJTS().buffer(distance));

    }

    protected abstract Point fixPoint(Point point);

}