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1 | 1 | /**************************************************************************** |
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2 | 2 | ** |
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3 | 3 | ** Copyright (C) 2013 Digia Plc |
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4 | 4 | ** All rights reserved. |
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5 | 5 | ** For any questions to Digia, please use contact form at http://qt.digia.com |
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6 | 6 | ** |
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7 | 7 | ** This file is part of the Qt Enterprise Charts Add-on. |
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8 | 8 | ** |
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9 | 9 | ** $QT_BEGIN_LICENSE$ |
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10 | 10 | ** Licensees holding valid Qt Enterprise licenses may use this file in |
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11 | 11 | ** accordance with the Qt Enterprise License Agreement provided with the |
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12 | 12 | ** Software or, alternatively, in accordance with the terms contained in |
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13 | 13 | ** a written agreement between you and Digia. |
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14 | 14 | ** |
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15 | 15 | ** If you have questions regarding the use of this file, please use |
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16 | 16 | ** contact form at http://qt.digia.com |
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17 | 17 | ** $QT_END_LICENSE$ |
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18 | 18 | ** |
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19 | 19 | ****************************************************************************/ |
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20 | 20 | |
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21 | 21 | #include "polardomain_p.h" |
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22 | 22 | #include "qabstractaxis_p.h" |
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23 | 23 | #include <qmath.h> |
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24 | 24 | |
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25 | 25 | QTCOMMERCIALCHART_BEGIN_NAMESPACE |
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26 | 26 | |
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27 | 27 | PolarDomain::PolarDomain(QObject *parent) |
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28 | 28 | : AbstractDomain(parent) |
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29 | 29 | { |
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30 | 30 | } |
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31 | 31 | |
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32 | 32 | PolarDomain::~PolarDomain() |
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33 | 33 | { |
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34 | 34 | } |
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35 | 35 | |
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36 | 36 | void PolarDomain::setSize(const QSizeF &size) |
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37 | 37 | { |
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38 | 38 | Q_ASSERT(size.width() == size.height()); |
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39 | m_radius = size.height() / 2; | |
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39 | m_radius = size.height() / 2.0; | |
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40 | 40 | m_center = QPointF(m_radius, m_radius); |
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41 | 41 | AbstractDomain::setSize(size); |
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42 | 42 | } |
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43 | 43 | |
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44 | 44 | QPointF PolarDomain::calculateGeometryPoint(const QPointF &point, bool &ok) const |
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45 | 45 | { |
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46 | qreal r; | |
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46 | qreal r = 0.0; | |
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47 | 47 | qreal a = toAngularCoordinate(point.x(), ok); |
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48 | 48 | if (ok) |
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49 | 49 | r = toRadialCoordinate(point.y(), ok); |
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50 | 50 | if (ok) { |
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51 | 51 | return m_center + polarCoordinateToPoint(a, r); |
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52 | 52 | } else { |
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53 | 53 | qWarning() << "Logarithm of negative value is undefined. Empty layout returned."; |
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54 | 54 | return QPointF(); |
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55 | 55 | } |
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56 | 56 | } |
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57 | 57 | |
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58 | 58 | QVector<QPointF> PolarDomain::calculateGeometryPoints(const QList<QPointF> &vector) const |
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59 | 59 | { |
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60 | 60 | QVector<QPointF> result; |
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61 | 61 | result.resize(vector.count()); |
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62 | 62 | bool ok; |
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63 | qreal r; | |
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64 | qreal a; | |
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63 | qreal r = 0.0; | |
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64 | qreal a = 0.0; | |
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65 | 65 | |
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66 | 66 | for (int i = 0; i < vector.count(); ++i) { |
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67 | 67 | a = toAngularCoordinate(vector[i].x(), ok); |
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68 | 68 | if (ok) |
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69 | 69 | r = toRadialCoordinate(vector[i].y(), ok); |
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70 | 70 | if (ok) { |
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71 | 71 | result[i] = m_center + polarCoordinateToPoint(a, r); |
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72 | 72 | } else { |
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73 | 73 | qWarning() << "Logarithm of negative value is undefined. Empty layout returned."; |
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74 | 74 | return QVector<QPointF>(); |
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75 | 75 | } |
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76 | 76 | } |
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77 | 77 | |
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78 | 78 | return result; |
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79 | 79 | } |
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80 | 80 | |
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81 | 81 | QPointF PolarDomain::polarCoordinateToPoint(qreal angularCoordinate, qreal radialCoordinate) const |
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82 | 82 | { |
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83 | 83 | qreal dx = qSin(angularCoordinate * (M_PI / 180)) * radialCoordinate; |
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84 | 84 | qreal dy = qCos(angularCoordinate * (M_PI / 180)) * radialCoordinate; |
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85 | 85 | |
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86 | 86 | return QPointF(dx, -dy); |
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87 | 87 | } |
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88 | 88 | |
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89 | 89 | #include "moc_polardomain_p.cpp" |
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90 | 90 | |
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91 | 91 | QTCOMMERCIALCHART_END_NAMESPACE |
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