/* * 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.pdmodel.common; import org.apache.pdfbox.cos.COSArray; import org.apache.pdfbox.cos.COSBase; import org.apache.pdfbox.cos.COSFloat; import org.apache.pdfbox.cos.COSNumber; /** * This class will be used for matrix manipulation. * * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a> * @version $Revision: 1.3 $ */ public class PDMatrix implements COSObjectable { private COSArray matrix; // the number of row elements depends on the number of elements // within the given matrix // 3x3 e.g. Matrix of a CalRGB colorspace dictionary // 3x2 e.g. FontMatrix of a type 3 font private int numberOfRowElements = 3; /** * Constructor. */ public PDMatrix() { matrix = new COSArray(); matrix.add( new COSFloat( 1.0f ) ); matrix.add( new COSFloat( 0.0f ) ); matrix.add( new COSFloat( 0.0f ) ); matrix.add( new COSFloat( 0.0f ) ); matrix.add( new COSFloat( 1.0f ) ); matrix.add( new COSFloat( 0.0f ) ); matrix.add( new COSFloat( 0.0f ) ); matrix.add( new COSFloat( 0.0f ) ); matrix.add( new COSFloat( 1.0f ) ); } /** * Constructor. * * @param array The array that describes the matrix. */ public PDMatrix( COSArray array ) { if ( array.size() == 6) { numberOfRowElements = 2; } matrix = array; } /** * This will get the underlying array value. * * @return The cos object that this object wraps. */ public COSArray getCOSArray() { return matrix; } /** * Convert this standard java object to a COS object. * * @return The cos object that matches this Java object. */ public COSBase getCOSObject() { return matrix; } /** * This will get a matrix value at some point. * * @param row The row to get the value from. * @param column The column to get the value from. * * @return The value at the row/column position. */ public float getValue( int row, int column ) { return ((COSNumber)matrix.get( row*numberOfRowElements + column )).floatValue(); } /** * This will set a value at a position. * * @param row The row to set the value at. * @param column the column to set the value at. * @param value The value to set at the position. */ public void setValue( int row, int column, float value ) { matrix.set( row*numberOfRowElements+column, new COSFloat( value ) ); } }