/**************************************************************************** ** ** 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 #include #include 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 PolarDomain::calculateGeometryPoints(const QList &vector) const { QVector 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(); } } 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