qgsellipsoidutils.h

Go to the documentation of this file.

/***************************************************************************
  qgsellipsoidutils.h
 --------------------
  Date                 : April 2017
  Copyright            : (C) 2017 by Nyall Dawson
  email                : nyall dot dawson at gmail dot com
 ***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSELLIPSOIDUTILS_H
#define QGSELLIPSOIDUTILS_H
 
#include "qgis_core.h"
#include "qgis_sip.h"
#include "qgscoordinatereferencesystem.h"
 
#include <QQuaternion>
#include <QStringList>
#include <QVector3D>
 
class QgsCelestialBody;

class CORE_EXPORT QgsEllipsoidUtils
{
  public:
    struct EllipsoidParameters
    {
        bool valid { true };

        double semiMajor { -1.0 };
        double semiMinor { -1.0 };

        bool useCustomParameters { false };

        double inverseFlattening { -1.0 };

        QgsCoordinateReferenceSystem crs;
    };

    struct EllipsoidDefinition
    {
        QString acronym;
        QString description;
        QgsEllipsoidUtils::EllipsoidParameters parameters;

        QString celestialBodyName;
    };

    static EllipsoidParameters ellipsoidParameters( const QString &ellipsoid );

    static QList< QgsEllipsoidUtils::EllipsoidDefinition > definitions();

    static QStringList acronyms();

    static QList< QgsCelestialBody > celestialBodies();

    static QQuaternion quaternionFromNormalUpRight( const QVector3D &normalUp, const QVector3D &normalRight );

    static QQuaternion ellipsoidEastNorthUpRotation( const QgsVector3D &position, double semiMajorAxis, double semiMinorAxis );
 
#ifndef SIP_RUN
    static void invalidateCache( bool disableCache = false );
#endif
};
 
#endif // QGSELLIPSOIDUTILS_H