001 //$HeadURL: svn+ssh://rbezema@svn.wald.intevation.org/deegree/base/tags/2.1/src/org/deegree/model/csct/ct/ConcatenedTransformDirect.java $
002 /*---------------- FILE HEADER ------------------------------------------
003
004 This file is part of deegree.
005 Copyright (C) 2001 by:
006 EXSE, Department of Geography, University of Bonn
007 http://www.giub.uni-bonn.de/exse/
008 lat/lon GmbH
009 http://www.lat-lon.de
010
011 It has been implemented within SEAGIS - An OpenSource implementation of OpenGIS specification
012 (C) 2001, Institut de Recherche pour le D�veloppement (http://sourceforge.net/projects/seagis/)
013 SEAGIS Contacts: Surveillance de l'Environnement Assist�e par Satellite
014 Institut de Recherche pour le D�veloppement / US-Espace
015 mailto:seasnet@teledetection.fr
016
017
018 This library is free software; you can redistribute it and/or
019 modify it under the terms of the GNU Lesser General Public
020 License as published by the Free Software Foundation; either
021 version 2.1 of the License, or (at your option) any later version.
022
023 This library is distributed in the hope that it will be useful,
024 but WITHOUT ANY WARRANTY; without even the implied warranty of
025 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
026 Lesser General Public License for more details.
027
028 You should have received a copy of the GNU Lesser General Public
029 License along with this library; if not, write to the Free Software
030 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
031
032 Contact:
033
034 Andreas Poth
035 lat/lon GmbH
036 Aennchenstr. 19
037 53115 Bonn
038 Germany
039 E-Mail: poth@lat-lon.de
040
041 Klaus Greve
042 Department of Geography
043 University of Bonn
044 Meckenheimer Allee 166
045 53115 Bonn
046 Germany
047 E-Mail: klaus.greve@uni-bonn.de
048
049
050 ---------------------------------------------------------------------------*/
051 package org.deegree.model.csct.ct;
052
053 import org.deegree.model.csct.pt.CoordinatePoint;
054
055
056 /**
057 * Concatened transform where the transfert dimension
058 * is the same than source and target dimension. This
059 * fact allows some optimizations, the most important
060 * one being the possibility to avoid the use of an
061 * intermediate buffer.
062 *
063 * @version 1.0
064 * @author Martin Desruisseaux
065 */
066 class ConcatenedTransformDirect extends ConcatenedTransform {
067 /**
068 * Serial number for interoperability with different versions.
069 */
070 private static final long serialVersionUID = -3568975979013908920L;
071
072 /**
073 * Construct a concatenated transform.
074 */
075 public ConcatenedTransformDirect( final MathTransformFactory provider,
076 final MathTransform transform1,
077 final MathTransform transform2 ) {
078 super( provider, transform1, transform2 );
079 }
080
081 /**
082 * Check if transforms are compatibles
083 * with this implementation.
084 */
085 protected boolean isValid() {
086 return super.isValid() &&
087 ( transform1.getDimSource() == transform1.getDimTarget() ) &&
088 ( transform2.getDimSource() == transform2.getDimTarget() );
089 }
090
091 /**
092 * Transforms the specified <code>ptSrc</code> and stores the result in <code>ptDst</code>.
093 */
094 public CoordinatePoint transform( final CoordinatePoint ptSrc, CoordinatePoint ptDst )
095 throws TransformException {
096 ptDst = transform1.transform( ptSrc, ptDst );
097 return transform2.transform( ptDst, ptDst );
098 }
099
100 /**
101 * Transforms a list of coordinate point ordinal values.
102 */
103 public void transform( final double[] srcPts, final int srcOff, final double[] dstPts,
104 final int dstOff, final int numPts ) throws TransformException {
105
106 transform1.transform( srcPts, srcOff, dstPts, dstOff, numPts );
107 transform2.transform( dstPts, dstOff, dstPts, dstOff, numPts );
108 }
109
110 /**
111 * Transforms a list of coordinate point ordinal values.
112 */
113 public void transform( final float[] srcPts, final int srcOff, final float[] dstPts,
114 final int dstOff, final int numPts ) throws TransformException {
115
116 transform1.transform( srcPts, srcOff, dstPts, dstOff, numPts );
117 transform2.transform( dstPts, dstOff, dstPts, dstOff, numPts );
118 }
119 }