QGCGeoBoundingCube.h

/****************************************************************************
 *
 *   (c) 2009-2016 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 <QObject>
#include <QGeoCoordinate>

// A bounding "cube" for small surface areas (doesn't take in consideration earth's curvature)
// Coordinate system makes NW Up Left Bottom (0,0,0) and SE Bottom Right Top (y,x,z)
class QGCGeoBoundingCube : public QObject {
    Q_OBJECT
public:
    QGCGeoBoundingCube(const QGCGeoBoundingCube& other)
    {
        pointNW = other.pointNW;
        pointSE = other.pointSE;
    }

    QGCGeoBoundingCube()
        : pointNW(QGeoCoordinate(MaxSouth, MaxEast, MaxAlt))
        , pointSE(QGeoCoordinate(MaxNorth, MaxWest, MinAlt))
    {
    }

    QGCGeoBoundingCube(QGeoCoordinate p1, QGeoCoordinate p2)
        : pointNW(p1)
        , pointSE(p2)
    {
    }

    Q_PROPERTY(QGeoCoordinate pointNW MEMBER pointNW CONSTANT)
    Q_PROPERTY(QGeoCoordinate pointSE MEMBER pointNW CONSTANT)

    Q_INVOKABLE bool isValid() const;
    Q_INVOKABLE QGeoCoordinate center() const;

    inline bool operator ==(const QGCGeoBoundingCube& other)
    {
        return pointNW == other.pointNW && pointSE == other.pointSE;
    }

    inline bool operator !=(const QGCGeoBoundingCube& other)
    {
        return !(*this == other);
    }

    inline const QGCGeoBoundingCube& operator =(const QGCGeoBoundingCube& other)
    {
        pointNW = other.pointNW;
        pointSE = other.pointSE;
        return *this;
    }

    //-- 2D
    QList<QGeoCoordinate> polygon2D() const;
    double width    () const;
    double height   () const;
    double area     () const;
    double radius   () const;

    QGeoCoordinate  pointNW;
    QGeoCoordinate  pointSE;
    static double MaxAlt;
    static double MinAlt;
    static double MaxNorth;
    static double MaxSouth;
    static double MaxWest;
    static double MaxEast;
};