polardomain.cpp
91 lines
| 2.6 KiB
| text/x-c
|
CppLexer
Miikka Heikkinen
|
r2483 | /**************************************************************************** | ||
** | ||||
** Copyright (C) 2013 Digia Plc | ||||
** All rights reserved. | ||||
** For any questions to Digia, please use contact form at http://qt.digia.com | ||||
** | ||||
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r2574 | ** This file is part of the Qt Enterprise Charts Add-on. | ||
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r2483 | ** | ||
** $QT_BEGIN_LICENSE$ | ||||
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r2574 | ** Licensees holding valid Qt Enterprise licenses may use this file in | ||
** accordance with the Qt Enterprise License Agreement provided with the | ||||
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r2483 | ** 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.digia.com | ||||
** $QT_END_LICENSE$ | ||||
** | ||||
****************************************************************************/ | ||||
#include "polardomain_p.h" | ||||
#include "qabstractaxis_p.h" | ||||
#include <qmath.h> | ||||
QTCOMMERCIALCHART_BEGIN_NAMESPACE | ||||
PolarDomain::PolarDomain(QObject *parent) | ||||
: AbstractDomain(parent) | ||||
{ | ||||
} | ||||
PolarDomain::~PolarDomain() | ||||
{ | ||||
} | ||||
void PolarDomain::setSize(const QSizeF &size) | ||||
{ | ||||
Q_ASSERT(size.width() == size.height()); | ||||
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r2580 | m_radius = size.height() / 2.0; | ||
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r2483 | m_center = QPointF(m_radius, m_radius); | ||
AbstractDomain::setSize(size); | ||||
} | ||||
QPointF PolarDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const | ||||
{ | ||||
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r2580 | qreal r = 0.0; | ||
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r2483 | 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; | ||||
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r2580 | qreal r = 0.0; | ||
qreal a = 0.0; | ||||
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r2483 | |||
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" | ||||
QTCOMMERCIALCHART_END_NAMESPACE | ||||