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.geom.AffineTransform;

import java.awt.geom.PathIterator;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

import org.gvsig.fmap.geom.Geometry;

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

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

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

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

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

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

/**

 * @author fdiaz

 *

 */

public abstract class AbstractMultiCurve extends AbstractMultiPrimitive implements MultiCurve {

    /**

     *

     */

    private static final long serialVersionUID = 5498201227873886542L;

    /**

     * @param multiline

     * @param subtype

     */

    public AbstractMultiCurve(int type, int subtype) {

        super(type, subtype);

    }

    /**

     * @param type

     */

    public AbstractMultiCurve(int subtype) {

        super(Geometry.TYPES.MULTICURVE, subtype);

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.aggregate.MultiCurve#getCurveAt(int)

     */

    public Curve getCurveAt(int index) {

        return (Curve)primitives.get(index);

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.aggregate.MultiCurve#addCurve(org.gvsig.fmap.geom.primitive.Curve)

     */

    public void addCurve(Curve curve) {

        primitives.add((Primitive) fixPrimitive(curve));

    }

    /* (non-Javadoc)

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

     */

    public PathIterator getPathIterator(AffineTransform at) {

        MultiCurveIterator pi = new MultiCurveIterator(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 MultiCurveIterator 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 MultiCurveIterator(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);

        }

    }

}