2011-04-27 10:05:43 +00:00
|
|
|
/****************************************************************************
|
|
|
|
**
|
|
|
|
** 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.
|
|
|
|
**
|
|
|
|
** $QT_BEGIN_LICENSE:LGPL$
|
|
|
|
** GNU Lesser General Public License Usage
|
2011-05-24 09:34:08 +00:00
|
|
|
** 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.
|
2011-04-27 10:05:43 +00:00
|
|
|
**
|
|
|
|
** In addition, as a special exception, Nokia gives you certain additional
|
2011-05-24 09:34:08 +00:00
|
|
|
** rights. These rights are described in the Nokia Qt LGPL Exception
|
2011-04-27 10:05:43 +00:00
|
|
|
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
|
|
|
|
**
|
2011-05-24 09:34:08 +00:00
|
|
|
** GNU General Public License Usage
|
|
|
|
** Alternatively, this file may be used under the terms of the GNU General
|
|
|
|
** Public License version 3.0 as published by the Free Software Foundation
|
|
|
|
** and appearing in the file LICENSE.GPL included in the packaging of this
|
|
|
|
** file. Please review the following information to ensure the GNU General
|
|
|
|
** Public License version 3.0 requirements will be met:
|
|
|
|
** http://www.gnu.org/copyleft/gpl.html.
|
|
|
|
**
|
|
|
|
** Other Usage
|
|
|
|
** Alternatively, this file may be used in accordance with the terms and
|
|
|
|
** conditions contained in a signed written agreement between you and Nokia.
|
2011-04-27 10:05:43 +00:00
|
|
|
**
|
|
|
|
**
|
|
|
|
**
|
|
|
|
**
|
|
|
|
**
|
|
|
|
** $QT_END_LICENSE$
|
|
|
|
**
|
|
|
|
****************************************************************************/
|
|
|
|
#ifndef PATHCOMPARE_H
|
|
|
|
#define PATHCOMPARE_H
|
|
|
|
|
|
|
|
#include <qmath.h>
|
|
|
|
|
|
|
|
namespace QPathCompare {
|
|
|
|
|
|
|
|
static const int precision = 8;
|
|
|
|
static const qreal epsilon = qPow(0.1, precision);
|
|
|
|
|
|
|
|
static inline bool fuzzyIsZero(qreal x, qreal relative)
|
|
|
|
{
|
|
|
|
if (qAbs(relative) < epsilon)
|
|
|
|
return qAbs(x) < epsilon;
|
|
|
|
else
|
|
|
|
return qAbs(x / relative) < epsilon;
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool fuzzyCompare(const QPointF &a, const QPointF &b)
|
|
|
|
{
|
|
|
|
const QPointF delta = a - b;
|
|
|
|
|
|
|
|
const qreal x = qMax(qAbs(a.x()), qAbs(b.x()));
|
|
|
|
const qreal y = qMax(qAbs(a.y()), qAbs(b.y()));
|
|
|
|
|
|
|
|
return fuzzyIsZero(delta.x(), x) && fuzzyIsZero(delta.y(), y);
|
|
|
|
}
|
|
|
|
|
|
|
|
static bool isClosed(const QPainterPath &path)
|
|
|
|
{
|
|
|
|
if (path.elementCount() == 0)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
QPointF first = path.elementAt(0);
|
|
|
|
QPointF last = path.elementAt(path.elementCount() - 1);
|
|
|
|
|
|
|
|
return fuzzyCompare(first, last);
|
|
|
|
}
|
|
|
|
|
|
|
|
// rotation and direction independent path comparison
|
|
|
|
// allows paths to be shifted or reversed relative to each other
|
|
|
|
static bool comparePaths(const QPainterPath &actual, const QPainterPath &expected)
|
|
|
|
{
|
|
|
|
const int endActual = isClosed(actual) ? actual.elementCount() - 1 : actual.elementCount();
|
|
|
|
const int endExpected = isClosed(expected) ? expected.elementCount() - 1 : expected.elementCount();
|
|
|
|
|
|
|
|
if (endActual != endExpected)
|
|
|
|
return false;
|
|
|
|
|
|
|
|
for (int i = 0; i < endActual; ++i) {
|
|
|
|
int k = 0;
|
|
|
|
for (k = 0; k < endActual; ++k) {
|
|
|
|
int i1 = k;
|
|
|
|
int i2 = (i + k) % endActual;
|
|
|
|
|
|
|
|
QPointF a = actual.elementAt(i1);
|
|
|
|
QPointF b = expected.elementAt(i2);
|
|
|
|
|
|
|
|
if (!fuzzyCompare(a, b))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (k == endActual)
|
|
|
|
return true;
|
|
|
|
|
|
|
|
for (k = 0; k < endActual; ++k) {
|
|
|
|
int i1 = k;
|
|
|
|
int i2 = (i + endActual - k) % endActual;
|
|
|
|
|
|
|
|
QPointF a = actual.elementAt(i1);
|
|
|
|
QPointF b = expected.elementAt(i2);
|
|
|
|
|
|
|
|
if (!fuzzyCompare(a, b))
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (k == endActual)
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|