001    //$HeadURL: svn+ssh://jwilden@svn.wald.intevation.org/deegree/base/branches/2.5_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    }