qt5base-lts/tests/auto/qline/tst_qline.cpp
Qt by Nokia 38be0d1383 Initial import from the monolithic Qt.
This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:

http://qt.gitorious.org/qt/pages/GitIntroductionWithQt

If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.

Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
2011-04-27 12:05:43 +02:00

493 lines
16 KiB
C++

/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <qline.h>
#include <math.h>
#ifndef M_2PI
#define M_2PI 6.28318530717958647692528676655900576
#endif
//TESTED_CLASS=
//TESTED_FILES=
class tst_QLine : public QObject
{
Q_OBJECT
public:
tst_QLine();
private slots:
void testIntersection();
void testIntersection_data();
void testLength();
void testLength_data();
void testNormalVector();
void testNormalVector_data();
void testAngle();
void testAngle_data();
void testAngle2();
void testAngle2_data();
void testAngle3();
void testAngleTo();
void testAngleTo_data();
void testSet();
};
// Square root of two
#define SQRT2 1.4142135623731
// Length of unit vector projected to x from 45 degrees
#define UNITX_45 0.707106781186547
const qreal epsilon = sizeof(qreal) == sizeof(double) ? 1e-8 : 1e-4;
tst_QLine::tst_QLine()
{
}
void tst_QLine::testSet()
{
{
QLine l;
l.setP1(QPoint(1, 2));
l.setP2(QPoint(3, 4));
QCOMPARE(l.x1(), 1);
QCOMPARE(l.y1(), 2);
QCOMPARE(l.x2(), 3);
QCOMPARE(l.y2(), 4);
l.setPoints(QPoint(5, 6), QPoint(7, 8));
QCOMPARE(l.x1(), 5);
QCOMPARE(l.y1(), 6);
QCOMPARE(l.x2(), 7);
QCOMPARE(l.y2(), 8);
l.setLine(9, 10, 11, 12);
QCOMPARE(l.x1(), 9);
QCOMPARE(l.y1(), 10);
QCOMPARE(l.x2(), 11);
QCOMPARE(l.y2(), 12);
}
{
QLineF l;
l.setP1(QPointF(1, 2));
l.setP2(QPointF(3, 4));
QCOMPARE(l.x1(), 1.0);
QCOMPARE(l.y1(), 2.0);
QCOMPARE(l.x2(), 3.0);
QCOMPARE(l.y2(), 4.0);
l.setPoints(QPointF(5, 6), QPointF(7, 8));
QCOMPARE(l.x1(), 5.0);
QCOMPARE(l.y1(), 6.0);
QCOMPARE(l.x2(), 7.0);
QCOMPARE(l.y2(), 8.0);
l.setLine(9.0, 10.0, 11.0, 12.0);
QCOMPARE(l.x1(), 9.0);
QCOMPARE(l.y1(), 10.0);
QCOMPARE(l.x2(), 11.0);
QCOMPARE(l.y2(), 12.0);
}
}
void tst_QLine::testIntersection_data()
{
QTest::addColumn<double>("xa1");
QTest::addColumn<double>("ya1");
QTest::addColumn<double>("xa2");
QTest::addColumn<double>("ya2");
QTest::addColumn<double>("xb1");
QTest::addColumn<double>("yb1");
QTest::addColumn<double>("xb2");
QTest::addColumn<double>("yb2");
QTest::addColumn<int>("type");
QTest::addColumn<double>("ix");
QTest::addColumn<double>("iy");
QTest::newRow("parallel") << 1.0 << 1.0 << 3.0 << 4.0
<< 5.0 << 6.0 << 7.0 << 9.0
<< int(QLineF::NoIntersection) << 0.0 << 0.0;
QTest::newRow("unbounded") << 1.0 << 1.0 << 5.0 << 5.0
<< 0.0 << 4.0 << 3.0 << 4.0
<< int(QLineF::UnboundedIntersection) << 4.0 << 4.0;
QTest::newRow("bounded") << 1.0 << 1.0 << 5.0 << 5.0
<< 0.0 << 4.0 << 5.0 << 4.0
<< int(QLineF::BoundedIntersection) << 4.0 << 4.0;
QTest::newRow("almost vertical") << 0.0 << 10.0 << 20.0000000000001 << 10.0
<< 10.0 << 0.0 << 10.0 << 20.0
<< int(QLineF::BoundedIntersection) << 10.0 << 10.0;
QTest::newRow("almost horizontal") << 0.0 << 10.0 << 20.0 << 10.0
<< 10.0000000000001 << 0.0 << 10.0 << 20.0
<< int(QLineF::BoundedIntersection) << 10.0 << 10.0;
QTest::newRow("task 241464") << 100.1599256468623
<< 100.7861905065196
<< 100.1599256468604
<< -9999.78619050651
<< 10.0 << 50.0 << 190.0 << 50.0
<< int(QLineF::BoundedIntersection)
<< 100.1599256468622
<< 50.0;
QLineF baseA(0, -50, 0, 50);
QLineF baseB(-50, 0, 50, 0);
for (int i = 0; i < 1000; ++i) {
QLineF a = QLineF::fromPolar(50, i);
a.setP1(-a.p2());
QLineF b = QLineF::fromPolar(50, i * 0.997 + 90);
b.setP1(-b.p2());
// make the qFuzzyCompare be a bit more lenient
a = a.translated(1, 1);
b = b.translated(1, 1);
QTest::newRow(qPrintable(QString::fromLatin1("rotation-%0").arg(i)))
<< (double)a.x1() << (double)a.y1() << (double)a.x2() << (double)a.y2()
<< (double)b.x1() << (double)b.y1() << (double)b.x2() << (double)b.y2()
<< int(QLineF::BoundedIntersection)
<< 1.0
<< 1.0;
}
}
void tst_QLine::testIntersection()
{
QFETCH(double, xa1);
QFETCH(double, ya1);
QFETCH(double, xa2);
QFETCH(double, ya2);
QFETCH(double, xb1);
QFETCH(double, yb1);
QFETCH(double, xb2);
QFETCH(double, yb2);
QFETCH(int, type);
QFETCH(double, ix);
QFETCH(double, iy);
QLineF a(xa1, ya1, xa2, ya2);
QLineF b(xb1, yb1, xb2, yb2);
QPointF ip;
QLineF::IntersectType itype = a.intersect(b, &ip);
QCOMPARE(int(itype), type);
if (type != QLineF::NoIntersection) {
QVERIFY(qAbs(ip.x() - ix) < epsilon);
QVERIFY(qAbs(ip.y() - iy) < epsilon);
}
}
void tst_QLine::testLength_data()
{
QTest::addColumn<double>("x1");
QTest::addColumn<double>("y1");
QTest::addColumn<double>("x2");
QTest::addColumn<double>("y2");
QTest::addColumn<double>("length");
QTest::addColumn<double>("lengthToSet");
QTest::addColumn<double>("vx");
QTest::addColumn<double>("vy");
QTest::newRow("[1,0]*2") << 0.0 << 0.0 << 1.0 << 0.0 << 1.0 << 2.0 << 2.0 << 0.0;
QTest::newRow("[0,1]*2") << 0.0 << 0.0 << 0.0 << 1.0 << 1.0 << 2.0 << 0.0 << 2.0;
QTest::newRow("[-1,0]*2") << 0.0 << 0.0 << -1.0 << 0.0 << 1.0 << 2.0 << -2.0 << 0.0;
QTest::newRow("[0,-1]*2") << 0.0 << 0.0 << 0.0 << -1.0 << 1.0 << 2.0 << 0.0 << -2.0;
QTest::newRow("[1,1]->|1|") << 0.0 << 0.0 << 1.0 << 1.0
<< double(SQRT2) << 1.0 << double(UNITX_45) << double(UNITX_45);
QTest::newRow("[-1,1]->|1|") << 0.0 << 0.0 << -1.0 << 1.0
<< double(SQRT2) << 1.0 << double(-UNITX_45) << double(UNITX_45);
QTest::newRow("[1,-1]->|1|") << 0.0 << 0.0 << 1.0 << -1.0
<< double(SQRT2) << 1.0 << double(UNITX_45) << double(-UNITX_45);
QTest::newRow("[-1,-1]->|1|") << 0.0 << 0.0 << -1.0 << -1.0
<< double(SQRT2) << 1.0 << double(-UNITX_45) << double(-UNITX_45);
QTest::newRow("[1,0]*2 (2,2)") << 2.0 << 2.0 << 3.0 << 2.0 << 1.0 << 2.0 << 2.0 << 0.0;
QTest::newRow("[0,1]*2 (2,2)") << 2.0 << 2.0 << 2.0 << 3.0 << 1.0 << 2.0 << 0.0 << 2.0;
QTest::newRow("[-1,0]*2 (2,2)") << 2.0 << 2.0 << 1.0 << 2.0 << 1.0 << 2.0 << -2.0 << 0.0;
QTest::newRow("[0,-1]*2 (2,2)") << 2.0 << 2.0 << 2.0 << 1.0 << 1.0 << 2.0 << 0.0 << -2.0;
QTest::newRow("[1,1]->|1| (2,2)") << 2.0 << 2.0 << 3.0 << 3.0
<< double(SQRT2) << 1.0 << double(UNITX_45) << double(UNITX_45);
QTest::newRow("[-1,1]->|1| (2,2)") << 2.0 << 2.0 << 1.0 << 3.0
<< double(SQRT2) << 1.0 << double(-UNITX_45) << double(UNITX_45);
QTest::newRow("[1,-1]->|1| (2,2)") << 2.0 << 2.0 << 3.0 << 1.0
<< double(SQRT2) << 1.0 << double(UNITX_45) << double(-UNITX_45);
QTest::newRow("[-1,-1]->|1| (2,2)") << 2.0 << 2.0 << 1.0 << 1.0
<< double(SQRT2) << 1.0 << double(-UNITX_45) << double(-UNITX_45);
}
void tst_QLine::testLength()
{
QFETCH(double, x1);
QFETCH(double, y1);
QFETCH(double, x2);
QFETCH(double, y2);
QFETCH(double, length);
QFETCH(double, lengthToSet);
QFETCH(double, vx);
QFETCH(double, vy);
QLineF l(x1, y1, x2, y2);
QCOMPARE(l.length(), qreal(length));
l.setLength(lengthToSet);
QCOMPARE(l.length(), qreal(lengthToSet));
QCOMPARE(l.dx(), qreal(vx));
QCOMPARE(l.dy(), qreal(vy));
}
void tst_QLine::testNormalVector_data()
{
QTest::addColumn<double>("x1");
QTest::addColumn<double>("y1");
QTest::addColumn<double>("x2");
QTest::addColumn<double>("y2");
QTest::addColumn<double>("nvx");
QTest::addColumn<double>("nvy");
QTest::newRow("[1, 0]") << 0.0 << 0.0 << 1.0 << 0.0 << 0.0 << -1.0;
QTest::newRow("[-1, 0]") << 0.0 << 0.0 << -1.0 << 0.0 << 0.0 << 1.0;
QTest::newRow("[0, 1]") << 0.0 << 0.0 << 0.0 << 1.0 << 1.0 << 0.0;
QTest::newRow("[0, -1]") << 0.0 << 0.0 << 0.0 << -1.0 << -1.0 << 0.0;
QTest::newRow("[2, 3]") << 2.0 << 3.0 << 4.0 << 6.0 << 3.0 << -2.0;
}
void tst_QLine::testNormalVector()
{
QFETCH(double, x1);
QFETCH(double, y1);
QFETCH(double, x2);
QFETCH(double, y2);
QFETCH(double, nvx);
QFETCH(double, nvy);
QLineF l(x1, y1, x2, y2);
QLineF n = l.normalVector();
QCOMPARE(l.x1(), n.x1());
QCOMPARE(l.y1(), n.y1());
QCOMPARE(n.dx(), qreal(nvx));
QCOMPARE(n.dy(), qreal(nvy));
}
void tst_QLine::testAngle_data()
{
QTest::addColumn<double>("xa1");
QTest::addColumn<double>("ya1");
QTest::addColumn<double>("xa2");
QTest::addColumn<double>("ya2");
QTest::addColumn<double>("xb1");
QTest::addColumn<double>("yb1");
QTest::addColumn<double>("xb2");
QTest::addColumn<double>("yb2");
QTest::addColumn<double>("angle");
QTest::newRow("parallel") << 1.0 << 1.0 << 3.0 << 4.0
<< 5.0 << 6.0 << 7.0 << 9.0
<< 0.0;
QTest::newRow("[4,4]-[4,0]") << 1.0 << 1.0 << 5.0 << 5.0
<< 0.0 << 4.0 << 3.0 << 4.0
<< 45.0;
QTest::newRow("[4,4]-[-4,0]") << 1.0 << 1.0 << 5.0 << 5.0
<< 3.0 << 4.0 << 0.0 << 4.0
<< 135.0;
for (int i=0; i<180; ++i) {
QTest::newRow(QString("angle:%1").arg(i).toLatin1())
<< 0.0 << 0.0 << double(cos(i*M_2PI/360)) << double(sin(i*M_2PI/360))
<< 0.0 << 0.0 << 1.0 << 0.0
<< double(i);
}
}
void tst_QLine::testAngle()
{
QFETCH(double, xa1);
QFETCH(double, ya1);
QFETCH(double, xa2);
QFETCH(double, ya2);
QFETCH(double, xb1);
QFETCH(double, yb1);
QFETCH(double, xb2);
QFETCH(double, yb2);
QFETCH(double, angle);
QLineF a(xa1, ya1, xa2, ya2);
QLineF b(xb1, yb1, xb2, yb2);
double resultAngle = a.angle(b);
QCOMPARE(qRound(resultAngle), qRound(angle));
}
void tst_QLine::testAngle2_data()
{
QTest::addColumn<qreal>("x1");
QTest::addColumn<qreal>("y1");
QTest::addColumn<qreal>("x2");
QTest::addColumn<qreal>("y2");
QTest::addColumn<qreal>("angle");
QTest::newRow("right") << qreal(0.0) << qreal(0.0) << qreal(10.0) << qreal(0.0) << qreal(0.0);
QTest::newRow("left") << qreal(0.0) << qreal(0.0) << qreal(-10.0) << qreal(0.0) << qreal(180.0);
QTest::newRow("up") << qreal(0.0) << qreal(0.0) << qreal(0.0) << qreal(-10.0) << qreal(90.0);
QTest::newRow("down") << qreal(0.0) << qreal(0.0) << qreal(0.0) << qreal(10.0) << qreal(270.0);
QTest::newRow("diag a") << qreal(0.0) << qreal(0.0) << qreal(10.0) << qreal(-10.0) << qreal(45.0);
QTest::newRow("diag b") << qreal(0.0) << qreal(0.0) << qreal(-10.0) << qreal(-10.0) << qreal(135.0);
QTest::newRow("diag c") << qreal(0.0) << qreal(0.0) << qreal(-10.0) << qreal(10.0) << qreal(225.0);
QTest::newRow("diag d") << qreal(0.0) << qreal(0.0) << qreal(10.0) << qreal(10.0) << qreal(315.0);
}
void tst_QLine::testAngle2()
{
QFETCH(qreal, x1);
QFETCH(qreal, y1);
QFETCH(qreal, x2);
QFETCH(qreal, y2);
QFETCH(qreal, angle);
QLineF line(x1, y1, x2, y2);
QCOMPARE(line.angle(), angle);
QLineF polar = QLineF::fromPolar(line.length(), angle);
QVERIFY(qAbs(line.x1() - polar.x1()) < epsilon);
QVERIFY(qAbs(line.y1() - polar.y1()) < epsilon);
QVERIFY(qAbs(line.x2() - polar.x2()) < epsilon);
QVERIFY(qAbs(line.y2() - polar.y2()) < epsilon);
}
void tst_QLine::testAngle3()
{
for (int i = -720; i <= 720; ++i) {
QLineF line(0, 0, 100, 0);
line.setAngle(i);
const int expected = (i + 720) % 360;
QVERIFY2(qAbs(line.angle() - qreal(expected)) < epsilon, qPrintable(QString::fromLatin1("value: %1").arg(i)));
QCOMPARE(line.length(), qreal(100.0));
QCOMPARE(QLineF::fromPolar(100.0, i), line);
}
}
void tst_QLine::testAngleTo()
{
QFETCH(qreal, xa1);
QFETCH(qreal, ya1);
QFETCH(qreal, xa2);
QFETCH(qreal, ya2);
QFETCH(qreal, xb1);
QFETCH(qreal, yb1);
QFETCH(qreal, xb2);
QFETCH(qreal, yb2);
QFETCH(qreal, angle);
QLineF a(xa1, ya1, xa2, ya2);
QLineF b(xb1, yb1, xb2, yb2);
const qreal resultAngle = a.angleTo(b);
QVERIFY(qAbs(resultAngle - angle) < epsilon);
a.translate(b.p1() - a.p1());
a.setAngle(a.angle() + resultAngle);
a.setLength(b.length());
QCOMPARE(a, b);
}
void tst_QLine::testAngleTo_data()
{
QTest::addColumn<qreal>("xa1");
QTest::addColumn<qreal>("ya1");
QTest::addColumn<qreal>("xa2");
QTest::addColumn<qreal>("ya2");
QTest::addColumn<qreal>("xb1");
QTest::addColumn<qreal>("yb1");
QTest::addColumn<qreal>("xb2");
QTest::addColumn<qreal>("yb2");
QTest::addColumn<qreal>("angle");
QTest::newRow("parallel") << qreal(1.0) << qreal(1.0) << qreal(3.0) << qreal(4.0)
<< qreal(5.0) << qreal(6.0) << qreal(7.0) << qreal(9.0)
<< qreal(0.0);
QTest::newRow("[4,4]-[4,0]") << qreal(1.0) << qreal(1.0) << qreal(5.0) << qreal(5.0)
<< qreal(0.0) << qreal(4.0) << qreal(3.0) << qreal(4.0)
<< qreal(45.0);
QTest::newRow("[4,4]-[-4,0]") << qreal(1.0) << qreal(1.0) << qreal(5.0) << qreal(5.0)
<< qreal(3.0) << qreal(4.0) << qreal(0.0) << qreal(4.0)
<< qreal(225.0);
for (int i = 0; i < 360; ++i) {
const QLineF l = QLineF::fromPolar(1, i);
QTest::newRow(QString("angle:%1").arg(i).toLatin1())
<< qreal(0.0) << qreal(0.0) << qreal(1.0) << qreal(0.0)
<< qreal(0.0) << qreal(0.0) << l.p2().x() << l.p2().y()
<< qreal(i);
}
}
QTEST_MAIN(tst_QLine)
#include "tst_qline.moc"