| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the test suite of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL-EXCEPT$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| |
| #include <QtTest/QtTest> |
| #include <qmatrix.h> |
| #include <qmath.h> |
| #include <qpolygon.h> |
| |
| |
| class tst_QWMatrix : public QObject |
| { |
| Q_OBJECT |
| |
| private slots: |
| void mapRect_data(); |
| void mapToPolygon_data(); |
| void mapRect(); |
| void operator_star_qwmatrix(); |
| void assignments(); |
| void mapToPolygon(); |
| void translate(); |
| void scale(); |
| void mapPolygon(); |
| |
| private: |
| void mapping_data(); |
| }; |
| |
| void tst_QWMatrix::mapRect_data() |
| { |
| mapping_data(); |
| } |
| |
| void tst_QWMatrix::mapToPolygon_data() |
| { |
| mapping_data(); |
| } |
| |
| void tst_QWMatrix::mapping_data() |
| { |
| //create the testtable instance and define the elements |
| QTest::addColumn<QMatrix>("matrix"); |
| QTest::addColumn<QRect>("src"); |
| QTest::addColumn<QPolygon>("res"); |
| |
| //next we fill it with data |
| |
| // identity |
| QTest::newRow( "identity" ) << QMatrix( 1, 0, 0, 1, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 10, 20, 30, 40 ) ); |
| // scaling |
| QTest::newRow( "scale 0" ) << QMatrix( 2, 0, 0, 2, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 20, 40, 60, 80 ) ); |
| QTest::newRow( "scale 1" ) << QMatrix( 10, 0, 0, 10, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 100, 200, 300, 400 ) ); |
| // mirroring |
| QTest::newRow( "mirror 0" ) << QMatrix( -1, 0, 0, 1, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -40, 20, 30, 40 ) ); |
| QTest::newRow( "mirror 1" ) << QMatrix( 1, 0, 0, -1, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 10, -60, 30, 40 ) ); |
| QTest::newRow( "mirror 2" ) << QMatrix( -1, 0, 0, -1, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -40, -60, 30, 40 ) ); |
| QTest::newRow( "mirror 3" ) << QMatrix( -2, 0, 0, -2, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -80, -120, 60, 80 ) ); |
| QTest::newRow( "mirror 4" ) << QMatrix( -10, 0, 0, -10, 0, 0 ) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -400, -600, 300, 400 ) ); |
| QTest::newRow( "mirror 5" ) << QMatrix( -1, 0, 0, 1, 0, 0 ) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -30, 0, 30, 40 ) ); |
| QTest::newRow( "mirror 6" ) << QMatrix( 1, 0, 0, -1, 0, 0 ) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( 0, -40, 30, 40 ) ); |
| QTest::newRow( "mirror 7" ) << QMatrix( -1, 0, 0, -1, 0, 0 ) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -30, -40, 30, 40 ) ); |
| QTest::newRow( "mirror 8" ) << QMatrix( -2, 0, 0, -2, 0, 0 ) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -60, -80, 60, 80 ) ); |
| QTest::newRow( "mirror 9" ) << QMatrix( -10, 0, 0, -10, 0, 0 ) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -300, -400, 300, 400 ) ); |
| |
| const auto rotate = [](qreal degrees) { |
| const qreal rad = qDegreesToRadians(degrees); |
| return QMatrix(std::cos(rad), -std::sin(rad), |
| std::sin(rad), std::cos(rad), 0, 0); |
| }; |
| |
| // rotations |
| QTest::newRow( "rot 0 a" ) << rotate(0.) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon ( QRect( 0, 0, 30, 40 ) ); |
| QTest::newRow( "rot 0 b" ) << rotate(0.00001f) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon ( QRect( 0, 0, 30, 40 ) ); |
| QTest::newRow( "rot 0 c" ) << rotate(0.) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon ( QRect( 10, 20, 30, 40 ) ); |
| QTest::newRow( "rot 0 d" ) << rotate(0.00001f) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon ( QRect( 10, 20, 30, 40 ) ); |
| |
| #if 0 |
| const auto rotScale = [](qreal degrees, qreal scale) { |
| const qreal rad = qDegreesToRadians(degrees); |
| return QMatrix(scale * std::cos(rad), -scale * std::sin(rad), |
| scale * std::sin(rad), scale * std::cos(rad), 0, 0); |
| }; |
| // rotations with scaling |
| QTest::newRow( "rotscale 90 a" ) << rotScale(90., 10) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( 0, -299, 400, 300 ) ); |
| QTest::newRow( "rotscale 90 b" ) << rotScale(90.00001, 10) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( 0, -299, 400, 300 ) ); |
| QTest::newRow( "rotscale 90 c" ) << rotScale(90., 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 200, -399, 400, 300 ) ); |
| QTest::newRow( "rotscale 90 d" ) << rotScale(90.00001, 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 200, -399, 400, 300 ) ); |
| |
| QTest::newRow( "rotscale 180 a" ) << rotScale(180., 10) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -299, -399, 300, 400 ) ); |
| QTest::newRow( "rotscale 180 b" ) << rotScale(180.000001, 10) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -299, -399, 300, 400 ) ); |
| QTest::newRow( "rotscale 180 c" ) << rotScale(180., 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -399, -599, 300, 400 ) ); |
| QTest::newRow( "rotscale 180 d" ) << rotScale(180.000001, 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -399, -599, 300, 400 ) ); |
| |
| QTest::newRow( "rotscale 270 a" ) << rotScale(270., 10) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -399, 00, 400, 300 ) ); |
| QTest::newRow( "rotscale 270 b" ) << rotScale(270.0000001, 10) |
| << QRect( 0, 0, 30, 40 ) |
| << QPolygon( QRect( -399, 00, 400, 300 ) ); |
| QTest::newRow( "rotscale 270 c" ) << rotScale(270., 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -599, 100, 400, 300 ) ); |
| QTest::newRow( "rotscale 270 d" ) << rotScale(270.000001, 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -599, 100, 400, 300 ) ); |
| |
| // rotations that are not multiples of 90 degrees. mapRect returns the bounding rect here. |
| QTest::newRow( "rot 45 a" ) << rotate(45) |
| << QRect( 0, 0, 10, 10 ) |
| << QPolygon( QRect( 0, -7, 14, 14 ) ); |
| QTest::newRow( "rot 45 b" ) << rotate(45) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 21, -14, 49, 49 ) ); |
| QTest::newRow( "rot 45 c" ) << rotScale(45, 10) |
| << QRect( 0, 0, 10, 10 ) |
| << QPolygon( QRect( 0, -70, 141, 141 ) ); |
| QTest::newRow( "rot 45 d" ) << rotScale(45, 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( 212, -141, 495, 495 ) ); |
| |
| QTest::newRow( "rot -45 a" ) << rotate(-45) |
| << QRect( 0, 0, 10, 10 ) |
| << QPolygon( QRect( -7, 0, 14, 14 ) ); |
| QTest::newRow( "rot -45 b" ) << rotate(-45) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -35, 21, 49, 49 ) ); |
| QTest::newRow( "rot -45 c" ) << rotScale(-45, 10) |
| << QRect( 0, 0, 10, 10 ) |
| << QPolygon( QRect( -70, 0, 141, 141 ) ); |
| QTest::newRow( "rot -45 d" ) << rotScale(-45, 10) |
| << QRect( 10, 20, 30, 40 ) |
| << QPolygon( QRect( -353, 212, 495, 495 ) ); |
| #endif |
| } |
| |
| void tst_QWMatrix::mapRect() |
| { |
| QFETCH( QMatrix, matrix ); |
| QFETCH( QRect, src ); |
| // qDebug( "got src: %d/%d (%d/%d), matrix=[ %f %f %f %f %f %f ]", |
| // src.x(), src.y(), src.width(), src.height(), |
| // matrix.m11(), matrix.m12(), matrix.m21(), matrix.m22(), matrix.dx(), matrix.dy() ); |
| QTEST( QPolygon( matrix.mapRect(src) ), "res" ); |
| } |
| |
| void tst_QWMatrix::operator_star_qwmatrix() |
| { |
| QMatrix m1( 2, 3, 4, 5, 6, 7 ); |
| QMatrix m2( 3, 4, 5, 6, 7, 8 ); |
| |
| QMatrix result1x2( 21, 26, 37, 46, 60, 74 ); |
| QMatrix result2x1( 22, 29, 34, 45, 52, 68); |
| |
| QMatrix product12 = m1*m2; |
| QMatrix product21 = m2*m1; |
| |
| QVERIFY( product12==result1x2 ); |
| QVERIFY( product21==result2x1 ); |
| } |
| |
| |
| void tst_QWMatrix::assignments() |
| { |
| QMatrix m; |
| m.scale(2, 3); |
| m.rotate(45); |
| m.shear(4, 5); |
| |
| QMatrix c1(m); |
| |
| QCOMPARE(m.m11(), c1.m11()); |
| QCOMPARE(m.m12(), c1.m12()); |
| QCOMPARE(m.m21(), c1.m21()); |
| QCOMPARE(m.m22(), c1.m22()); |
| QCOMPARE(m.dx(), c1.dx()); |
| QCOMPARE(m.dy(), c1.dy()); |
| |
| QMatrix c2 = m; |
| QCOMPARE(m.m11(), c2.m11()); |
| QCOMPARE(m.m12(), c2.m12()); |
| QCOMPARE(m.m21(), c2.m21()); |
| QCOMPARE(m.m22(), c2.m22()); |
| QCOMPARE(m.dx(), c2.dx()); |
| QCOMPARE(m.dy(), c2.dy()); |
| } |
| |
| |
| void tst_QWMatrix::mapToPolygon() |
| { |
| QFETCH( QMatrix, matrix ); |
| QFETCH( QRect, src ); |
| QFETCH( QPolygon, res ); |
| |
| QCOMPARE( matrix.mapToPolygon( src ), res ); |
| } |
| |
| |
| void tst_QWMatrix::translate() |
| { |
| QMatrix m( 1, 2, 3, 4, 5, 6 ); |
| QMatrix res2( m ); |
| QMatrix res( 1, 2, 3, 4, 75, 106 ); |
| m.translate( 10, 20 ); |
| QVERIFY( m == res ); |
| m.translate( -10, -20 ); |
| QVERIFY( m == res2 ); |
| } |
| |
| void tst_QWMatrix::scale() |
| { |
| QMatrix m( 1, 2, 3, 4, 5, 6 ); |
| QMatrix res2( m ); |
| QMatrix res( 10, 20, 60, 80, 5, 6 ); |
| m.scale( 10, 20 ); |
| QVERIFY( m == res ); |
| m.scale( 1./10., 1./20. ); |
| QVERIFY( m == res2 ); |
| } |
| |
| void tst_QWMatrix::mapPolygon() |
| { |
| QPolygon poly; |
| poly << QPoint(0, 0) << QPoint(1, 1) << QPoint(100, 1) << QPoint(1, 100) << QPoint(-1, -1) << QPoint(-1000, 1000); |
| |
| { |
| QMatrix m; |
| m.rotate(90); |
| |
| // rotating 90 degrees four times should result in original poly |
| QPolygon mapped = m.map(m.map(m.map(m.map(poly)))); |
| QCOMPARE(mapped, poly); |
| |
| QMatrix m2; |
| m2.scale(10, 10); |
| QMatrix m3; |
| m3.scale(0.1, 0.1); |
| |
| mapped = m3.map(m2.map(poly)); |
| QCOMPARE(mapped, poly); |
| } |
| |
| { |
| QMatrix m(1, 2, 3, 4, 5, 6); |
| |
| QPolygon mapped = m.map(poly); |
| for (int i = 0; i < mapped.size(); ++i) |
| QCOMPARE(mapped.at(i), m.map(poly.at(i))); |
| } |
| } |
| |
| QTEST_APPLESS_MAIN(tst_QWMatrix) |
| #include "tst_qwmatrix.moc" |
