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| |
| #ifndef QGEOPATH_P_H |
| #define QGEOPATH_P_H |
| |
| // |
| // W A R N I N G |
| // ------------- |
| // |
| // This file is not part of the Qt API. It exists purely as an |
| // implementation detail. This header file may change from version to |
| // version without notice, or even be removed. |
| // |
| // We mean it. |
| // |
| |
| #include <QtPositioning/private/qpositioningglobal_p.h> |
| #include "qgeoshape_p.h" |
| #include "qgeocoordinate.h" |
| #include "qlocationutils_p.h" |
| #include <QtPositioning/qgeopath.h> |
| #include <QtCore/QVector> |
| |
| QT_BEGIN_NAMESPACE |
| |
| inline static void computeBBox( const QList<QGeoCoordinate> &m_path, |
| QVector<double> &m_deltaXs, |
| double &m_minX, |
| double &m_maxX, |
| double &m_minLati, |
| double &m_maxLati, |
| QGeoRectangle &m_bbox) |
| { |
| if (m_path.isEmpty()) { |
| m_deltaXs.clear(); |
| m_minX = qInf(); |
| m_maxX = -qInf(); |
| m_minLati = qInf(); |
| m_maxLati = -qInf(); |
| m_bbox = QGeoRectangle(); |
| return; |
| } |
| |
| m_minLati = m_maxLati = m_path.at(0).latitude(); |
| int minId = 0; |
| int maxId = 0; |
| m_deltaXs.resize(m_path.size()); |
| m_deltaXs[0] = m_minX = m_maxX = 0.0; |
| |
| for (int i = 1; i < m_path.size(); i++) { |
| const QGeoCoordinate &geoFrom = m_path.at(i-1); |
| const QGeoCoordinate &geoTo = m_path.at(i); |
| double longiFrom = geoFrom.longitude(); |
| double longiTo = geoTo.longitude(); |
| double deltaLongi = longiTo - longiFrom; |
| if (qAbs(deltaLongi) > 180.0) { |
| if (longiTo > 0.0) |
| longiTo -= 360.0; |
| else |
| longiTo += 360.0; |
| deltaLongi = longiTo - longiFrom; |
| } |
| m_deltaXs[i] = m_deltaXs[i-1] + deltaLongi; |
| if (m_deltaXs[i] < m_minX) { |
| m_minX = m_deltaXs[i]; |
| minId = i; |
| } |
| if (m_deltaXs[i] > m_maxX) { |
| m_maxX = m_deltaXs[i]; |
| maxId = i; |
| } |
| if (geoTo.latitude() > m_maxLati) |
| m_maxLati = geoTo.latitude(); |
| if (geoTo.latitude() < m_minLati) |
| m_minLati = geoTo.latitude(); |
| } |
| |
| m_bbox = QGeoRectangle(QGeoCoordinate(m_maxLati, m_path.at(minId).longitude()), |
| QGeoCoordinate(m_minLati, m_path.at(maxId).longitude())); |
| } |
| |
| inline static void updateBBox( const QList<QGeoCoordinate> &m_path, |
| QVector<double> &m_deltaXs, |
| double &m_minX, |
| double &m_maxX, |
| double &m_minLati, |
| double &m_maxLati, |
| QGeoRectangle &m_bbox) |
| { |
| if (m_path.isEmpty()) { |
| m_deltaXs.clear(); |
| m_minX = qInf(); |
| m_maxX = -qInf(); |
| m_minLati = qInf(); |
| m_maxLati = -qInf(); |
| m_bbox = QGeoRectangle(); |
| return; |
| } else if (m_path.size() == 1) { // was 0 now is 1 |
| m_deltaXs.resize(1); |
| m_deltaXs[0] = m_minX = m_maxX = 0.0; |
| m_minLati = m_maxLati = m_path.at(0).latitude(); |
| m_bbox = QGeoRectangle(QGeoCoordinate(m_maxLati, m_path.at(0).longitude()), |
| QGeoCoordinate(m_minLati, m_path.at(0).longitude())); |
| return; |
| } else if ( m_path.size() != m_deltaXs.size() + 1 ) { // this case should not happen |
| computeBBox(m_path, m_deltaXs, m_minX, m_maxX, m_minLati, m_maxLati, m_bbox); // something went wrong |
| return; |
| } |
| |
| const QGeoCoordinate &geoFrom = m_path.at(m_path.size()-2); |
| const QGeoCoordinate &geoTo = m_path.last(); |
| double longiFrom = geoFrom.longitude(); |
| double longiTo = geoTo.longitude(); |
| double deltaLongi = longiTo - longiFrom; |
| if (qAbs(deltaLongi) > 180.0) { |
| if (longiTo > 0.0) |
| longiTo -= 360.0; |
| else |
| longiTo += 360.0; |
| deltaLongi = longiTo - longiFrom; |
| } |
| |
| m_deltaXs.push_back(m_deltaXs.last() + deltaLongi); |
| double currentMinLongi = m_bbox.topLeft().longitude(); |
| double currentMaxLongi = m_bbox.bottomRight().longitude(); |
| if (m_deltaXs.last() < m_minX) { |
| m_minX = m_deltaXs.last(); |
| currentMinLongi = geoTo.longitude(); |
| } |
| if (m_deltaXs.last() > m_maxX) { |
| m_maxX = m_deltaXs.last(); |
| currentMaxLongi = geoTo.longitude(); |
| } |
| if (geoTo.latitude() > m_maxLati) |
| m_maxLati = geoTo.latitude(); |
| if (geoTo.latitude() < m_minLati) |
| m_minLati = geoTo.latitude(); |
| m_bbox = QGeoRectangle(QGeoCoordinate(m_maxLati, currentMinLongi), |
| QGeoCoordinate(m_minLati, currentMaxLongi)); |
| } |
| |
| // Lazy by default. Eager, within the module, used only in MapItems/MapObjectsQSG |
| class Q_POSITIONING_PRIVATE_EXPORT QGeoPathPrivate : public QGeoShapePrivate |
| { |
| public: |
| QGeoPathPrivate(); |
| QGeoPathPrivate(const QList<QGeoCoordinate> &path, const qreal width = 0.0); |
| ~QGeoPathPrivate(); |
| |
| // QGeoShape API |
| virtual QGeoShapePrivate *clone() const override; |
| virtual bool isValid() const override; |
| virtual bool isEmpty() const override; |
| virtual QGeoCoordinate center() const override; |
| virtual bool operator==(const QGeoShapePrivate &other) const override; |
| virtual bool contains(const QGeoCoordinate &coordinate) const override; |
| virtual QGeoRectangle boundingGeoRectangle() const override; |
| |
| virtual void extendShape(const QGeoCoordinate &coordinate) override; |
| |
| // QGeoPathPrivate API |
| virtual const QList<QGeoCoordinate> &path() const; |
| virtual bool lineContains(const QGeoCoordinate &coordinate) const; |
| virtual qreal width() const; |
| virtual double length(int indexFrom, int indexTo) const; |
| virtual int size() const; |
| virtual QGeoCoordinate coordinateAt(int index) const; |
| virtual bool containsCoordinate(const QGeoCoordinate &coordinate) const; |
| |
| virtual void setWidth(const qreal &width); |
| virtual void translate(double degreesLatitude, double degreesLongitude); |
| virtual void setPath(const QList<QGeoCoordinate> &path); |
| virtual void clearPath(); |
| virtual void addCoordinate(const QGeoCoordinate &coordinate); |
| virtual void insertCoordinate(int index, const QGeoCoordinate &coordinate); |
| virtual void replaceCoordinate(int index, const QGeoCoordinate &coordinate); |
| virtual void removeCoordinate(const QGeoCoordinate &coordinate); |
| virtual void removeCoordinate(int index); |
| virtual void computeBoundingBox(); |
| virtual void markDirty(); |
| |
| // data members |
| QList<QGeoCoordinate> m_path; |
| qreal m_width = 0; |
| QGeoRectangle m_bbox; // cached |
| bool m_bboxDirty = false; |
| }; |
| |
| class Q_POSITIONING_PRIVATE_EXPORT QGeoPathPrivateEager : public QGeoPathPrivate |
| { |
| public: |
| QGeoPathPrivateEager(); |
| QGeoPathPrivateEager(const QList<QGeoCoordinate> &path, const qreal width = 0.0); |
| ~QGeoPathPrivateEager(); |
| |
| // QGeoShapePrivate API |
| virtual QGeoShapePrivate *clone() const override; |
| virtual void translate(double degreesLatitude, double degreesLongitude) override; |
| |
| // QGeoShapePrivate API |
| virtual void markDirty() override; |
| virtual void addCoordinate(const QGeoCoordinate &coordinate) override; |
| virtual void computeBoundingBox() override; |
| |
| // *Eager API |
| void updateBoundingBox(); |
| |
| // data members |
| QVector<double> m_deltaXs; // longitude deltas from m_path[0] |
| double m_minX = 0; // minimum value inside deltaXs |
| double m_maxX = 0; // maximum value inside deltaXs |
| double m_minLati = 0; // minimum latitude. paths do not wrap around through the poles |
| double m_maxLati = 0; // minimum latitude. paths do not wrap around through the poles |
| }; |
| |
| // This is a mean of creating a QGeoPathPrivateEager and injecting it into QGeoPaths via operator= |
| class Q_POSITIONING_PRIVATE_EXPORT QGeoPathEager : public QGeoPath |
| { |
| Q_GADGET |
| public: |
| |
| QGeoPathEager(); |
| QGeoPathEager(const QList<QGeoCoordinate> &path, const qreal &width = 0.0); |
| QGeoPathEager(const QGeoPath &other); |
| QGeoPathEager(const QGeoShape &other); |
| ~QGeoPathEager(); |
| }; |
| |
| QT_END_NAMESPACE |
| |
| #endif // QGEOPATH_P_H |
