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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Charts module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 or (at your option) any later version
** approved by the KDE Free Qt Foundation. The licenses are as published by
** the Free Software Foundation and appearing in the file LICENSE.GPL3
** 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 <private/polardomain_p.h>
#include <private/qabstractaxis_p.h>
#include <QtCore/QtMath>
QT_CHARTS_BEGIN_NAMESPACE
PolarDomain::PolarDomain(QObject *parent)
: AbstractDomain(parent)
{
}
PolarDomain::~PolarDomain()
{
}
void PolarDomain::setSize(const QSizeF &size)
{
Q_ASSERT(size.width() == size.height());
m_radius = size.height() / 2.0;
m_center = QPointF(m_radius, m_radius);
AbstractDomain::setSize(size);
}
QPointF PolarDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const
{
qreal r = 0.0;
qreal a = toAngularCoordinate(point.x(), ok);
if (ok)
r = toRadialCoordinate(point.y(), ok);
if (ok) {
return m_center + polarCoordinateToPoint(a, r);
} else {
qWarning() << "Logarithm of negative value is undefined. Empty layout returned.";
return QPointF();
}
}
QVector<QPointF> PolarDomain::calculateGeometryPoints(const QVector<QPointF> &vector) const
{
QVector<QPointF> result;
result.resize(vector.count());
bool ok;
qreal r = 0.0;
qreal a = 0.0;
for (int i = 0; i < vector.count(); ++i) {
a = toAngularCoordinate(vector[i].x(), ok);
if (ok)
r = toRadialCoordinate(vector[i].y(), ok);
if (ok) {
result[i] = m_center + polarCoordinateToPoint(a, r);
} else {
qWarning() << "Logarithm of negative value is undefined. Empty layout returned.";
return QVector<QPointF>();
}
}
return result;
}
QPointF PolarDomain::polarCoordinateToPoint(qreal angularCoordinate, qreal radialCoordinate) const
{
qreal dx = qSin(qDegreesToRadians(angularCoordinate)) * radialCoordinate;
qreal dy = qCos(qDegreesToRadians(angularCoordinate)) * radialCoordinate;
return QPointF(dx, -dy);
}
#include "moc_polardomain_p.cpp"
QT_CHARTS_END_NAMESPACE
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