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/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the Qt Charts module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:GPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3 or (at your option) any later version
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** approved by the KDE Free Qt Foundation. The licenses are as published by
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** the Free Software Foundation and appearing in the file LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <private/polardomain_p.h>
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#include <private/qabstractaxis_p.h>
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#include <QtCore/QtMath>
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QT_CHARTS_BEGIN_NAMESPACE
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PolarDomain::PolarDomain(QObject *parent)
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: AbstractDomain(parent)
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{
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}
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PolarDomain::~PolarDomain()
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{
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}
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void PolarDomain::setSize(const QSizeF &size)
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{
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Q_ASSERT(size.width() == size.height());
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m_radius = size.height() / 2.0;
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m_center = QPointF(m_radius, m_radius);
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AbstractDomain::setSize(size);
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}
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QPointF PolarDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const
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{
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qreal r = 0.0;
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qreal a = toAngularCoordinate(point.x(), ok);
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if (ok)
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r = toRadialCoordinate(point.y(), ok);
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if (ok) {
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return m_center + polarCoordinateToPoint(a, r);
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} else {
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qWarning() << "Logarithm of negative value is undefined. Empty layout returned.";
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return QPointF();
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}
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}
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QVector<QPointF> PolarDomain::calculateGeometryPoints(const QVector<QPointF> &vector) const
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{
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QVector<QPointF> result;
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result.resize(vector.count());
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bool ok;
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qreal r = 0.0;
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qreal a = 0.0;
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for (int i = 0; i < vector.count(); ++i) {
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a = toAngularCoordinate(vector[i].x(), ok);
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if (ok)
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r = toRadialCoordinate(vector[i].y(), ok);
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if (ok) {
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result[i] = m_center + polarCoordinateToPoint(a, r);
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} else {
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qWarning() << "Logarithm of negative value is undefined. Empty layout returned.";
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return QVector<QPointF>();
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}
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}
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return result;
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}
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QPointF PolarDomain::polarCoordinateToPoint(qreal angularCoordinate, qreal radialCoordinate) const
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{
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qreal dx = qSin(angularCoordinate * (M_PI / 180)) * radialCoordinate;
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qreal dy = qCos(angularCoordinate * (M_PI / 180)) * radialCoordinate;
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return QPointF(dx, -dy);
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}
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#include "moc_polardomain_p.cpp"
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QT_CHARTS_END_NAMESPACE
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