|
|
/****************************************************************************
|
|
|
**
|
|
|
** Copyright (C) 2014 Digia Plc
|
|
|
** All rights reserved.
|
|
|
** For any questions to Digia, please use contact form at http://qt.io
|
|
|
**
|
|
|
** This file is part of the Qt Charts module.
|
|
|
**
|
|
|
** Licensees holding valid commercial license for Qt may use this file in
|
|
|
** accordance with the Qt License Agreement provided with the Software
|
|
|
** or, alternatively, in accordance with the terms contained in a written
|
|
|
** agreement between you and Digia.
|
|
|
**
|
|
|
** If you have questions regarding the use of this file, please use
|
|
|
** contact form at http://qt.io
|
|
|
**
|
|
|
****************************************************************************/
|
|
|
|
|
|
#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 QList<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(angularCoordinate * (M_PI / 180)) * radialCoordinate;
|
|
|
qreal dy = qCos(angularCoordinate * (M_PI / 180)) * radialCoordinate;
|
|
|
|
|
|
return QPointF(dx, -dy);
|
|
|
}
|
|
|
|
|
|
#include "moc_polardomain_p.cpp"
|
|
|
|
|
|
QT_CHARTS_END_NAMESPACE
|
|
|
|
