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.ArrayList;

import java.util.Iterator;

import java.util.List;

import com.vividsolutions.jts.geom.LineString;

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

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

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

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

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.Primitive;

/**

 * @author fdiaz

 *

 */

public abstract class AbstractMultiLine extends AbstractMultiCurve implements MultiLine {

    /**

     *

     */

    private static final long serialVersionUID = 3585059833766514177L;

    /**

     * @param type

     */

    public AbstractMultiLine(int subtype) {

        super(subtype);

    }

    /* (non-Javadoc)

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

     */

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

        List<LineString> lineStrings = new ArrayList<LineString>(primitives.size());

        LineString lineString = null;

        for (Iterator iterator = primitives.iterator(); iterator.hasNext();) {

            Primitive primitive = (Primitive) iterator.next();

            lineString = (LineString) ((GeometryJTS)primitive).getJTS();

        }

        return JTSUtils.createJTSMultiLineString(lineStrings.toArray(new LineString[lineStrings.size()]));

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.Geometry#getPathIterator(java.awt.geom.AffineTransform)

     */

    public PathIterator getPathIterator(AffineTransform at) {

        MultiLineIterator pi = new MultiLineIterator(at);

        return pi;

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.Geometry#getPathIterator(java.awt.geom.AffineTransform, double)

     */

    public PathIterator getPathIterator(AffineTransform at, double flatness) {

        return getPathIterator(at);

    }

    /* (non-Javadoc)

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

     */

    public GeneralPathX getGeneralPath() {

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

    }

    protected class MultiLineIterator extends GeneralPathXIterator {

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

        private AffineTransform at;

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

        private boolean done;

        private int index = 0;

        private List<PathIterator>iterators = new ArrayList<PathIterator>(primitives.size());

        /**

         * Creates a new PointIterator object.

         *

         * @param p

         *            The polygon

         * @param at

         *            The affine transform applied to coordinates during

         *            iteration

         */

        public MultiLineIterator(AffineTransform at) {

            super(new GeneralPathX());

            if (at == null) {

                at = new AffineTransform();

            }

            this.at = at;

            for (Iterator iterator = primitives.iterator(); iterator.hasNext();) {

                Primitive primitive = (Primitive) iterator.next();

                iterators.add(primitive.getPathIterator(at));

            }

            done = false;

        }

        /**

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

         *

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

         */

        public int getWindingRule() {

            return PathIterator.WIND_EVEN_ODD;

        }

        /**

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

         */

        public void next() {

            PathIterator pathIteratorPrimitive = iterators.get(index);

            pathIteratorPrimitive.next();

            if(pathIteratorPrimitive.isDone()){

                index++;

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

            }

        }

        /**

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

         */

        public boolean isDone() {

            return done;

        }

        /**

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

         */

        public int currentSegment(double[] coords) {

            return iterators.get(index).currentSegment(coords);

        }

        /*

         * (non-Javadoc)

         *

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

         */

        public int currentSegment(float[] coords) {

            return iterators.get(index).currentSegment(coords);

        }

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.fmap.geom.Geometry#getShape(java.awt.geom.AffineTransform)

     */

    public Shape getShape(AffineTransform affineTransform) {

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

    }

    /*

     * (non-Javadoc)

     *

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

     */

    public Shape getShape() {

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

    }

    /* (non-Javadoc)

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

     */

    public void flip() throws GeometryOperationNotSupportedException, GeometryOperationException {

        for (Iterator iterator = primitives.iterator(); iterator.hasNext();) {

            ((GeometryJTS)iterator.next()).flip();

        }

    }

}