/**
* Copyright (c) 2004-2006, www.pdfbox.org
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of pdfbox; nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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*/
package org.pdfbox.util.operator;
import java.util.List;
import org.pdfbox.cos.COSNumber;
import org.pdfbox.util.Matrix;
import org.pdfbox.util.PDFOperator;
/**
*
* <p>Titre : PDFEngine Modification.</p>
* <p>Description : Structal modification of the PDFEngine class :
* the long sequence of conditions in processOperator is remplaced by
* this strategy pattern</p>
* <p>Copyright : Copyright (c) 2004</p>
* <p>Soci�t� : DBGS</p>
* @author Huault : huault@free.fr
* @version $Revision: 1.5 $
*/
public class Concatenate extends OperatorProcessor
{
/**
* process : cm : Concatenate matrix to current transformation matrix.
* @param operator The operator that is being executed.
* @param arguments List
*/
public void process(PDFOperator operator, List arguments)
{
//concatenate matrix to current transformation matrix
COSNumber a = (COSNumber) arguments.get(0);
COSNumber b = (COSNumber) arguments.get(1);
COSNumber c = (COSNumber) arguments.get(2);
COSNumber d = (COSNumber) arguments.get(3);
COSNumber e = (COSNumber) arguments.get(4);
COSNumber f = (COSNumber) arguments.get(5);
Matrix newMatrix = new Matrix();
newMatrix.setValue(0, 0, a.floatValue());
newMatrix.setValue(0, 1, b.floatValue());
newMatrix.setValue(1, 0, c.floatValue());
newMatrix.setValue(1, 1, d.floatValue());
newMatrix.setValue(2, 0, e.floatValue());
newMatrix.setValue(2, 1, f.floatValue());
//this line has changed
context.getGraphicsState().setCurrentTransformationMatrix(
newMatrix.multiply( context.getGraphicsState().getCurrentTransformationMatrix() ) );
}
}