/*
 * Geotools 2 - OpenSource mapping toolkit
 * (C) 2003, Geotools Project Managment Committee (PMC)
 * (C) 2001, Institut de Recherche pour le Développement
 *
 *    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
 *
 *
 *    This package contains documentation from OpenGIS specifications.
 *    OpenGIS consortium's work is fully acknowledged here.
 */
package org.geotools.ct;

// OpenGIS dependencies
import org.geotools.pt.CoordinatePoint;
import org.opengis.referencing.operation.TransformException;


/**
 * Concatenated transform where the transfert dimension
 * is the same than source and target dimension. This
 * fact allows some optimizations, the most important
 * one being the possibility to avoid the use of an
 * intermediate buffer.
 *
 * @source $URL$
 * @version $Id$
 * @author Martin Desruisseaux
 *
 * @deprecated Replaced by {@link org.geotools.referencing.operation.transform.ConcatenatedTransformDirect}
 *             in the <code>org.geotools.referencing.operation.transform</code> package.
 */
class ConcatenatedTransformDirect extends ConcatenatedTransform {
    /**
     * Serial number for interoperability with different versions.
     */
    private static final long serialVersionUID = -3568975979013908920L;
    
    /**
     * Construct a concatenated transform.
     */
    public ConcatenatedTransformDirect(final MathTransformFactory provider,
                                       final MathTransform transform1,
                                       final MathTransform transform2)
    {
        super(provider, transform1, transform2);
    }
    
    /**
     * Check if transforms are compatibles
     * with this implementation.
     */
    protected boolean isValid() {
        return super.isValid() &&
               transform1.getDimSource() == transform1.getDimTarget() &&
               transform2.getDimSource() == transform2.getDimTarget();
    }
    
    /**
     * Transforms the specified <code>ptSrc</code> and stores the result in <code>ptDst</code>.
     */
    public CoordinatePoint transform(final CoordinatePoint ptSrc,
                                           CoordinatePoint ptDst)
        throws TransformException
    {
        assert isValid();
        ptDst = transform1.transform(ptSrc, ptDst);
        return  transform2.transform(ptDst, ptDst);
    }
    
    /**
     * Transforms a list of coordinate point ordinal values.
     */
    public void transform(final double[] srcPts, final int srcOff,
                          final double[] dstPts, final int dstOff, final int numPts)
        throws TransformException
    {
        assert isValid();
        transform1.transform(srcPts, srcOff, dstPts, dstOff, numPts);
        transform2.transform(dstPts, dstOff, dstPts, dstOff, numPts);
    }
    
    /**
     * Transforms a list of coordinate point ordinal values.
     */
    public void transform(final float[] srcPts, final int srcOff,
                          final float[] dstPts, final int dstOff, final int numPts)
        throws TransformException
    {
        assert isValid();
        transform1.transform(srcPts, srcOff, dstPts, dstOff, numPts);
        transform2.transform(dstPts, dstOff, dstPts, dstOff, numPts);
    }
}