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/****************************************************************************
**
** 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 <qpolygon.h>
#include <qpainterpath.h>
#include <math.h>
#include <qpainter.h>
class tst_QPolygon : public QObject
{
Q_OBJECT
public:
tst_QPolygon();
private slots:
void makeEllipse();
void swap();
};
tst_QPolygon::tst_QPolygon()
{
}
void tst_QPolygon::makeEllipse()
{
// create an ellipse with R1 = R2 = R, i.e. a circle
QPolygon pa;
const int R = 50; // radius
QPainterPath path;
path.addEllipse(0, 0, 2*R, 2*R);
pa = path.toSubpathPolygons().at(0).toPolygon();
int i;
// make sure that all points are R+-1 away from the center
bool err = false;
for (i = 1; i < pa.size(); i++) {
QPoint p = pa.at(i);
double r = sqrt(pow(double(p.x() - R), 2.0) + pow(double(p.y() - R), 2.0));
// ### too strict ? at least from visual inspection it looks
// quite odd around the main axes. 2.0 passes easily.
err |= (qAbs(r - double(R)) > 2.0);
}
QVERIFY( !err );
}
void tst_QPolygon::swap()
{
QPolygon p1(QVector<QPoint>() << QPoint(0,0) << QPoint(10,10) << QPoint(-10,10));
QPolygon p2(QVector<QPoint>() << QPoint(0,0) << QPoint( 0,10) << QPoint( 10,10) << QPoint(10,0));
p1.swap(p2);
QCOMPARE(p1.count(),4);
QCOMPARE(p2.count(),3);
}
QTEST_APPLESS_MAIN(tst_QPolygon)
#include "tst_qpolygon.moc"
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