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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtPositioning module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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
double m_leftBoundWrapped; // 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
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