001: /**
002: * Copyright (c) 2004, www.pdfbox.org
003: * All rights reserved.
004: *
005: * Redistribution and use in source and binary forms, with or without
006: * modification, are permitted provided that the following conditions are met:
007: *
008: * 1. Redistributions of source code must retain the above copyright notice,
009: * this list of conditions and the following disclaimer.
010: * 2. Redistributions in binary form must reproduce the above copyright notice,
011: * this list of conditions and the following disclaimer in the documentation
012: * and/or other materials provided with the distribution.
013: * 3. Neither the name of pdfbox; nor the names of its
014: * contributors may be used to endorse or promote products derived from this
015: * software without specific prior written permission.
016: *
017: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
018: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
019: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
020: * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
021: * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
022: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
023: * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
024: * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
025: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
026: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
027: *
028: * http://www.pdfbox.org
029: *
030: */package org.pdfbox.pdmodel.common;
031:
032: import org.pdfbox.cos.COSArray;
033: import org.pdfbox.cos.COSBase;
034: import org.pdfbox.cos.COSFloat;
035: import org.pdfbox.cos.COSNumber;
036:
037: /**
038: * This class will be used for matrix manipulation.
039: *
040: * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
041: * @version $Revision: 1.3 $
042: */
043: public class PDMatrix implements Cloneable, COSObjectable {
044: private COSArray matrix;
045:
046: /**
047: * Constructor.
048: */
049: public PDMatrix() {
050: matrix = new COSArray();
051: matrix.add(new COSFloat(1.0f));
052: matrix.add(new COSFloat(0.0f));
053: matrix.add(new COSFloat(0.0f));
054: matrix.add(new COSFloat(0.0f));
055: matrix.add(new COSFloat(1.0f));
056: matrix.add(new COSFloat(0.0f));
057: matrix.add(new COSFloat(0.0f));
058: matrix.add(new COSFloat(0.0f));
059: matrix.add(new COSFloat(1.0f));
060: }
061:
062: /**
063: * Constructor.
064: *
065: * @param array The array that describes the matrix.
066: */
067: public PDMatrix(COSArray array) {
068: matrix = array;
069: }
070:
071: /**
072: * This will get the underlying array value.
073: *
074: * @return The cos object that this object wraps.
075: */
076: public COSArray getCOSArray() {
077: return matrix;
078: }
079:
080: /**
081: * Convert this standard java object to a COS object.
082: *
083: * @return The cos object that matches this Java object.
084: */
085: public COSBase getCOSObject() {
086: return matrix;
087: }
088:
089: /**
090: * This will get a matrix value at some point.
091: *
092: * @param row The row to get the value from.
093: * @param column The column to get the value from.
094: *
095: * @return The value at the row/column position.
096: */
097: public float getValue(int row, int column) {
098: return ((COSNumber) matrix.get(row * 3 + column)).floatValue();
099: }
100:
101: /**
102: * This will set a value at a position.
103: *
104: * @param row The row to set the value at.
105: * @param column the column to set the value at.
106: * @param value The value to set at the position.
107: */
108: public void setValue(int row, int column, float value) {
109: matrix.set(row * 3 + column, new COSFloat(value));
110: }
111: }
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