GeoScene.h

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/****************************************************************************
 *
 * (c) 2009-2024 QGROUNDCONTROL PROJECT <http://www.qgroundcontrol.org>
 *
 * QGroundControl is licensed according to the terms in the file
 * COPYING.md in the root of the source code directory.
 *
 ****************************************************************************/
 
#pragma once
 
#include <QtCore/QObject>
#include <QtCore/QPointF>
#include <QtCore/QVariant>
#include <QtCore/qnumeric.h>
#include <QtGui/QVector3D>
#include <QtPositioning/QGeoCoordinate>
#include <QtQmlIntegration/QtQmlIntegration>
 
class GeoMapCamera;
 
Q_MOC_INCLUDE("GeoMapCamera.h")
 
 
class GeoScene : public QObject
{
    Q_OBJECT
    QML_ELEMENT
    Q_PROPERTY(GeoMapCamera* camera READ camera WRITE setCamera NOTIFY cameraChanged)
    Q_PROPERTY(QPointF sceneOrigin READ sceneOrigin NOTIFY sceneOriginChanged)
    Q_PROPERTY(qreal verticalScale READ verticalScale NOTIFY sceneOriginChanged)
    Q_PROPERTY(qreal terrainScale READ terrainScale WRITE setTerrainScale NOTIFY terrainScaleChanged)
    Q_PROPERTY(QObject* content3D READ content3D WRITE setContent3D NOTIFY content3DChanged)
 
public:
    explicit GeoScene(QObject* parent = nullptr);
 
    static constexpr double kReanchorDistance = 50000.0;  
 
    GeoMapCamera* camera() const { return _camera; }
 
    void setCamera(GeoMapCamera* camera);
 
    QPointF sceneOrigin() const { return _origin; }
 
    qreal verticalScale() const;
 
    qreal terrainScale() const { return _terrainScale; }
 
    void setTerrainScale(qreal scale);
 
    QObject* content3D() const { return _content3D; }
 
    void setContent3D(QObject* node);
 
    Q_INVOKABLE QVector3D scenePositionFor(const QGeoCoordinate& coordinate) const;
 
    Q_INVOKABLE QVariant screenPositionFor(const QGeoCoordinate& coordinate) const;
 
    Q_INVOKABLE QGeoCoordinate centerForCoordinateAtScreenPoint(const QGeoCoordinate& coordinate,
                                                                const QPointF& screenPos,
                                                                double centerElevation = qQNaN()) const;
 
signals:
    void cameraChanged();
    void sceneOriginChanged();
    void terrainScaleChanged();
    void content3DChanged();
 
private slots:
    void _maybeReanchor();
 
private:
    GeoMapCamera* _camera = nullptr;
    QPointF _origin;
    bool _originSet = false;
    qreal _terrainScale = 0.0;
    QObject* _content3D = nullptr;
};