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.Collections;

import java.util.Iterator;

import java.util.List;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.fmap.geom.Geometry;

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

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.Polygon;

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

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

import org.gvsig.fmap.geom.type.GeometryType;

/**

 * @author fdiaz

 *

 */

public abstract class AbstractMultiPolygon extends AbstractMultiSurface implements MultiPolygon {

    /**

     *

     */

    private static final long serialVersionUID = 6663703214829442424L;

    public AbstractMultiPolygon(int subtype) {

        super(Geometry.TYPES.MULTIPOLYGON, subtype);

    }

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

        com.vividsolutions.jts.geom.Polygon[] polygons = new com.vividsolutions.jts.geom.Polygon[primitives.size()];

        for (int i=0; i<primitives.size(); i++){

            polygons[i] = (com.vividsolutions.jts.geom.Polygon) ((GeometryJTS)primitives.get(i)).getJTS();

        }

        return JTSUtils.createJTSMultiPolygon(polygons);

    }

    @Override

    public Geometry force2D() throws GeometryOperationNotSupportedException, GeometryOperationException {

        MultiPolygon2D other = new MultiPolygon2D();

        other.setProjection(this.getProjection());

        other.ensureCapacity(primitives.size());

        for (Primitive primitive : primitives) {

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

        }

        return other;

    }

    @Override

    public PathIterator getPathIterator(AffineTransform at) {

        MultiPolygonIterator pi = new MultiPolygonIterator(at);

        return pi;

    }

    @Override

    public PathIterator getPathIterator(AffineTransform at, double flatness) {

        return getPathIterator(at);

    }

    @Override

    public GeneralPathX getGeneralPath() {

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

    }

    @Override

    public void flip() throws GeometryOperationNotSupportedException, GeometryOperationException {

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

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

        }

        Collections.reverse(primitives);

    }

    @Override

    public void addSurface(Surface surface) {

        GeometryType geometryType = surface.getGeometryType();

        if(geometryType.getType() == Geometry.TYPES.POLYGON && geometryType.getSubType() == getGeometryType().getSubType()){

            primitives.add(surface);

            return;

        }

        String msg = StringUtils.replaceEach(

            "Only a polygon subtype  %(subtypeSurface)s can be added to a MultiPolygon subtype %(subtype)s",

            new String[]{"%(subtypeSurface)s","%(subtype)s"},

            new String[]{String.valueOf(geometryType.getSubType()), String.valueOf(getGeometryType().getSubType())}

        );

        logger.warn(msg);

        throw new UnsupportedOperationException(msg);

    }

    @Override

    public Shape getShape(AffineTransform affineTransform) {

        int capacity = 0;

        for( int i = 0; i < this.getPrimitivesNumber(); i++ ) {

            Polygon polygon = (Polygon) this.getPrimitiveAt(i);

            capacity += polygon.getNumVertices();

            for( int r = 0; r < polygon.getNumInteriorRings(); r++ ) {

                capacity += polygon.getInteriorRing(r).getNumVertices();

            }        

        }

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

    }

    @Override

    public Shape getShape() {

        return getShape(null);

    }

    protected class MultiPolygonIterator 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;

        private final List<PathIterator>iterators;

        public MultiPolygonIterator(AffineTransform at) {

            super(new GeneralPathX());

            this.iterators = new ArrayList<>(primitives.size());

            if (at == null) {

                at = new AffineTransform();

            }

            this.at = at;

            for (Primitive primitive : primitives) {

                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.

         */

        @Override

        public int getWindingRule() {

            return PathIterator.WIND_EVEN_ODD;

        }

        /*

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

         */

        @Override

        public void next() {

            PathIterator pathIteratorPrimitive = iterators.get(index);

            pathIteratorPrimitive.next();

            if(pathIteratorPrimitive.isDone()){

                index++;

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

            }

        }

        /*

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

         */

        @Override

        public boolean isDone() {

            return done;

        }

        /*

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

         */

        @Override

        public int currentSegment(double[] coords) {

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

        }

        /*

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

         */

        @Override

        public int currentSegment(float[] coords) {

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

        }

    }

}