/*
 * $Id: MultiPointDecoder.java 159 2010-03-02 23:00:04Z maesenka $
 *
 * This file is part of Hibernate Spatial, an extension to the
 * hibernate ORM solution for geographic data.
 *
 * Copyright © 2009 Geovise BVBA
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * For more information, visit: http://www.hibernatespatial.org/
 */

package org.hibernatespatial.sqlserver.convertors;

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.MultiPoint;
import com.vividsolutions.jts.geom.Point;

import java.util.ArrayList;
import java.util.List;

public class MultiPointDecoder extends AbstractDecoder<MultiPoint> {


    @Override
    protected OpenGisType getOpenGisType() {
        return OpenGisType.MULTIPOINT;
    }

    protected MultiPoint createNullGeometry() {
        return getGeometryFactory().createMultiPoint(new Point[]{});
    }

    protected MultiPoint createGeometry(SqlGeometryV1 nativeGeom) {
        return createGeometry(nativeGeom, 0);
    }

    @Override
    protected MultiPoint createGeometry(SqlGeometryV1 nativeGeom, int shapeIndex) {
        int startChildIdx = shapeIndex + 1;
        List<Coordinate> coordinates = new ArrayList<Coordinate>(nativeGeom.getNumShapes());
        for (int childIdx = startChildIdx; childIdx < nativeGeom.getNumShapes(); childIdx++) {
            if (!nativeGeom.isParentShapeOf(shapeIndex, childIdx)) continue;
            int figureOffset = nativeGeom.getStartFigureForShape(childIdx);
            int pntIdx = nativeGeom.getStartPointForFigure(figureOffset);
            coordinates.add(nativeGeom.getCoordinate(pntIdx));
        }
        return getGeometryFactory().createMultiPoint(coordinates.toArray(new Coordinate[coordinates.size()]));
    }

}