    001    //$HeadURL: https://svn.wald.intevation.org/svn/deegree/base/branches/2.4_testing/src/org/deegree/crs/transformations/coordinate/DirectTransform.java $
    002    /*----------------------------------------------------------------------------
    003     This file is part of deegree, http://deegree.org/
    004     Copyright (C) 2001-2009 by:
    005       Department of Geography, University of Bonn
    006     and
    007       lat/lon GmbH
    008
    009     This library is free software; you can redistribute it and/or modify it under
    010     the terms of the GNU Lesser General Public License as published by the Free
    011     Software Foundation; either version 2.1 of the License, or (at your option)
    012     any later version.
    013     This library is distributed in the hope that it will be useful, but WITHOUT
    014     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
    015     FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
    016     details.
    017     You should have received a copy of the GNU Lesser General Public License
    018     along with this library; if not, write to the Free Software Foundation, Inc.,
    019     59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
    020
    021     Contact information:
    022
    023     lat/lon GmbH
    024     Aennchenstr. 19, 53177 Bonn
    025     Germany
    026     http://lat-lon.de/
    027
    028     Department of Geography, University of Bonn
    029     Prof. Dr. Klaus Greve
    030     Postfach 1147, 53001 Bonn
    031     Germany
    032     http://www.geographie.uni-bonn.de/deegree/
    033
    034     e-mail: info@deegree.org
    035    ----------------------------------------------------------------------------*/
    036
    037    package org.deegree.crs.transformations.coordinate;
    038
    039    import java.util.List;
    040
    041    import javax.vecmath.Point3d;
    042
    043    import org.deegree.crs.Identifiable;
    044    import org.deegree.crs.coordinatesystems.CoordinateSystem;
    045    import org.deegree.crs.exceptions.TransformationException;
    046    import org.deegree.crs.transformations.polynomial.PolynomialTransformation;
    047    import org.deegree.framework.log.ILogger;
    048    import org.deegree.framework.log.LoggerFactory;
    049
    050    /**
    051     * The <code>DirectTransform</code> class wraps the access to a polynomial transformation, by calling it's
    052     * applyPolynomial method.
    053     *
    054     * @author <a href="mailto:bezema@lat-lon.de">Rutger Bezema</a>
    055     *
    056     * @author last edited by: $Author: mschneider $
    057     *
    058     * @version $Revision: 18195 $, $Date: 2009-06-18 17:55:39 +0200 (Do, 18. Jun 2009) $
    059     *
    060     */
    061
    062    public class DirectTransform extends CRSTransformation {
    063
    064        private static final long serialVersionUID = 5291664657849478137L;
    065
    066        private static ILogger LOG = LoggerFactory.getLogger( DirectTransform.class );
    067
    068        private final PolynomialTransformation transformation;
    069
    070        /**
    071         * @param transformation
    072         *            to apply
    073         * @param sourceCRS
    074         *            in which the points will be defined.
    075         * @param id
    076         *            an identifiable instance containing information about this transformation
    077         */
    078        public DirectTransform( PolynomialTransformation transformation, CoordinateSystem sourceCRS, Identifiable id ) {
    079            super( sourceCRS, transformation.getTargetCRS(), id );
    080            this.transformation = transformation;
    081        }
    082
    083        /**
    084         * @param transformation
    085         *            to apply
    086         * @param sourceCRS
    087         *            in which the points will be defined.
    088         */
    089        public DirectTransform( PolynomialTransformation transformation, CoordinateSystem sourceCRS ) {
    090            this(
    091                  transformation,
    092                  sourceCRS,
    093                  new Identifiable( createFromTo( sourceCRS.getIdentifier(), transformation.getTargetCRS().getIdentifier() ) ) );
    094
    095        }
    096
    097        @Override
    098        public List<Point3d> doTransform( List<Point3d> srcPts )
    099                                throws TransformationException {
    100            if ( ILogger.LOG_DEBUG == LOG.getLevel() ) {
    101                StringBuilder sb = new StringBuilder( "A " );
    102                sb.append( getImplementationName() );
    103                sb.append( " with incoming points: " );
    104                sb.append( srcPts );
    105                LOG.logDebug( sb.toString() );
    106            }
    107            if ( isInverseTransform() ) {
    108                LOG.logWarning( "A Direct Transformation cannot be inverse yet" );
    109            }
    110            return transformation.applyPolynomial( srcPts );
    111        }
    112
    113        @Override
    114        public boolean isIdentity() {
    115            // a transformation cannot be an identity it doesn't make a lot of sense.
    116            return false;
    117        }
    118
    119        @Override
    120        public String toString() {
    121            return super.toString() + " - Direct-Transformation: " + transformation.getImplementationName();
    122        }
    123
    124        @Override
    125        public String getImplementationName() {
    126            return transformation.getImplementationName();
    127        }
    128
    129    }