/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.pdfbox.util.operator;
import java.util.List;
import java.io.IOException;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSNumber;
import org.apache.pdfbox.util.Matrix;
import org.apache.pdfbox.util.PDFOperator;
/**
*
* @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
* @throws IOException If there is an error processing the operator.
*/
public void process(PDFOperator operator, List<COSBase> arguments) throws IOException
{
//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() ) );
}
}