/*
* 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.contentstream.operator.state;
import java.util.List;
import java.io.IOException;
import org.apache.pdfbox.contentstream.operator.MissingOperandException;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSNumber;
import org.apache.pdfbox.util.Matrix;
import org.apache.pdfbox.contentstream.operator.Operator;
import org.apache.pdfbox.contentstream.operator.OperatorProcessor;
/**
* cm: Concatenate matrix to current transformation matrix.
*
* @author Laurent Huault
*/
public class Concatenate extends OperatorProcessor
{
@Override
public void process(Operator operator, List<COSBase> arguments) throws IOException
{
if (arguments.size() < 6)
{
throw new MissingOperandException(operator, arguments);
}
if (!checkArrayTypesClass(arguments, COSNumber.class))
{
return;
}
// 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 matrix = new Matrix(a.floatValue(), b.floatValue(), c.floatValue(),
d.floatValue(), e.floatValue(), f.floatValue());
context.getGraphicsState().getCurrentTransformationMatrix().concatenate(matrix);
}
@Override
public String getName()
{
return "cm";
}
}