/*
 *    GeoTools - The Open Source Java GIS Toolkit
 *    http://geotools.org
 * 
 *    (C) 2004-2008, Open Source Geospatial Foundation (OSGeo)
 *    
 *    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;
 *    version 2.1 of the License.
 *
 *    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.
 */
package org.geotools.geometry.jts;

import com.vividsolutions.jts.geom.Coordinate;
import com.vividsolutions.jts.geom.CoordinateSequence;
import com.vividsolutions.jts.geom.CoordinateSequenceFactory;

/**
 * @TODO class description
 * 
 * @author jeichar
 * @since 2.1.x
 *
 *
 * @source $URL$
 */
public class LiteCoordinateSequenceFactory implements CoordinateSequenceFactory {

	/* (non-Javadoc)
	 * @see com.vividsolutions.jts.geom.CoordinateSequenceFactory#create(com.vividsolutions.jts.geom.Coordinate[])
	 */
	public CoordinateSequence create(Coordinate[] coordinates) {
		return new LiteCoordinateSequence(coordinates);
	}

	/* (non-Javadoc)
	 * @see com.vividsolutions.jts.geom.CoordinateSequenceFactory#create(com.vividsolutions.jts.geom.CoordinateSequence)
	 */
	public CoordinateSequence create(CoordinateSequence coordSeq) {
	    /**
	     * If copying a LiteCoordinateSequence, use the copy constructor
	     * to preserve dimensionality information.
	     */
		if (coordSeq instanceof LiteCoordinateSequence)
			return new LiteCoordinateSequence((LiteCoordinateSequence) coordSeq);
		return new LiteCoordinateSequence(coordSeq.toCoordinateArray());
	}

	/* (non-Javadoc)
	 * @see com.vividsolutions.jts.geom.CoordinateSequenceFactory#create(int, int)
	 */
	public CoordinateSequence create(int size, int dimension) {
		return new LiteCoordinateSequence(size, dimension);
	}

	/**
	 * @param points
	 */
	public CoordinateSequence create(double[] points) {
		return new LiteCoordinateSequence(points);
	}
	
	/**
     * @param points
     */
    public CoordinateSequence create(double[] points, int dimension) {
        return new LiteCoordinateSequence(points, dimension);
    }

    /**
     * Cast to a {@link LiteCoordinateSequence}
     * <p>
     * This method first checks if <tt>cs</tt> is an instanceof {@link LiteCoordinateSequence}, if
     * it is, itself is returned. If not, <tt>cs</tt> is cloned into a new
     * {@link LiteCoordinateSequence}
     * </p>
     * <p>
     * If cs is null, null is returned.
     * </p>
     * 
     * @param cs The source {@link CoordinateSequence}. Can be null.
     * @return A LiteCoordinateSequence, or null if <tt>cs</tt> was null.
     */
    public static LiteCoordinateSequence lite(CoordinateSequence cs) {
        if (cs instanceof LiteCoordinateSequence) {
            return (LiteCoordinateSequence) cs;
        } else if (cs == null) {
            return null;
        } else {
            return new LiteCoordinateSequence(cs.toCoordinateArray());
        }
    }
}