| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only |
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| 3 | |
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| 4 | #include <private/polardomain_p.h> |
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| 5 | #include <private/qabstractaxis_p.h> |
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| 6 | #include <QtCore/QtMath> |
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| 7 | |
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| 8 | QT_BEGIN_NAMESPACE |
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| 9 | |
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| 10 | PolarDomain::PolarDomain(QObject *parent) |
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| 11 | : AbstractDomain(parent) |
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| 12 | { |
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| 13 | } |
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| 14 | |
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| 15 | PolarDomain::~PolarDomain() |
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| 16 | { |
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| 17 | } |
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| 18 | |
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| 19 | void PolarDomain::setSize(const QSizeF &size) |
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| 20 | { |
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| 21 | Q_ASSERT(size.width() == size.height()); |
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| 22 | m_radius = size.height() / 2.0; |
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| 23 | m_center = QPointF(m_radius, m_radius); |
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| 24 | AbstractDomain::setSize(size); |
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| 25 | } |
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| 26 | |
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| 27 | QPointF PolarDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const |
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| 28 | { |
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| 29 | qreal r = 0.0; |
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| 30 | qreal a = toAngularCoordinate(value: point.x(), ok); |
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| 31 | if (ok) |
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| 32 | r = toRadialCoordinate(value: point.y(), ok); |
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| 33 | if (ok) { |
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| 34 | return m_center + polarCoordinateToPoint(angularCoordinate: a, radialCoordinate: r); |
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| 35 | } else { |
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| 36 | qWarning() << "Logarithm of negative value is undefined. Empty layout returned." ; |
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| 37 | return QPointF(); |
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| 38 | } |
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| 39 | } |
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| 40 | |
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| 41 | QList<QPointF> PolarDomain::calculateGeometryPoints(const QList<QPointF> &list) const |
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| 42 | { |
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| 43 | QList<QPointF> result; |
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| 44 | result.resize(size: list.size()); |
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| 45 | bool ok; |
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| 46 | qreal r = 0.0; |
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| 47 | qreal a = 0.0; |
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| 48 | |
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| 49 | for (int i = 0; i < list.size(); ++i) { |
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| 50 | a = toAngularCoordinate(value: list[i].x(), ok); |
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| 51 | if (ok) |
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| 52 | r = toRadialCoordinate(value: list[i].y(), ok); |
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| 53 | if (ok) { |
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| 54 | result[i] = m_center + polarCoordinateToPoint(angularCoordinate: a, radialCoordinate: r); |
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| 55 | } else { |
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| 56 | qWarning() << "Logarithm of negative value is undefined. Empty layout returned." ; |
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| 57 | return QList<QPointF>(); |
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| 58 | } |
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| 59 | } |
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| 60 | |
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| 61 | return result; |
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| 62 | } |
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| 63 | |
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| 64 | QPointF PolarDomain::polarCoordinateToPoint(qreal angularCoordinate, qreal radialCoordinate) const |
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| 65 | { |
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| 66 | qreal dx = qSin(v: qDegreesToRadians(degrees: angularCoordinate)) * radialCoordinate; |
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| 67 | qreal dy = qCos(v: qDegreesToRadians(degrees: angularCoordinate)) * radialCoordinate; |
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| 68 | |
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| 69 | return QPointF(dx, -dy); |
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| 70 | } |
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| 71 | |
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| 72 | QT_END_NAMESPACE |
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| 73 | |
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| 74 | #include "moc_polardomain_p.cpp" |
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| 75 | |
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