// SPDX-License-Identifier: LGPL-2.1-or-later
//
// SPDX-FileCopyrightText: 2009 Gaurav Gupta <1989.gaurav@googlemail.com>
// SPDX-FileCopyrightText: 2010 Bastian Holst <bastianholst@gmx.de>
//

#ifndef MARBLE_GEODATALOOKAT_H
#define MARBLE_GEODATALOOKAT_H

#include "GeoDataAbstractView.h"
#include "GeoDataCoordinates.h"
#include "geodata_export.h"

namespace Marble
{
class GeoDataLookAtPrivate;

/**
 */
class GEODATA_EXPORT GeoDataLookAt : public GeoDataAbstractView
{
public:
    GeoDataLookAt();

    GeoDataLookAt(const GeoDataLookAt &other);

    GeoDataLookAt &operator=(const GeoDataLookAt &other);

    bool operator==(const GeoDataLookAt &other) const;
    bool operator!=(const GeoDataLookAt &other) const;

    ~GeoDataLookAt() override;

    GeoDataAbstractView *copy() const override;

    /**
     * @brief set the altitude in a GeoDataLookAt object
     * @param altitude latitude
     *
     */
    void setAltitude(qreal altitude);

    /**
     * @brief retrieves the altitude of the GeoDataLookAt object
     * @return latitude
     */
    qreal altitude() const;

    /**
     * @brief set the latitude in a GeoDataLookAt object
     * @param latitude latitude
     * @param unit units that lon and lat get measured in
     * (default for Radian: north pole at pi/2, southpole at -pi/2)
     */
    void setLatitude(qreal latitude, GeoDataCoordinates::Unit unit = GeoDataCoordinates::Radian);

    /**
     * @brief retrieves the latitude of the GeoDataLookAt object
     * use the unit parameter to switch between Radian and DMS
     * @param unit units that lon and lat get measured in
     * (default for Radian: north pole at pi/2, southpole at -pi/2)
     * @return latitude
     */
    qreal latitude(GeoDataCoordinates::Unit unit = GeoDataCoordinates::Radian) const;

    /**
     * @brief set the longitude in a GeoDataLookAt object
     * @param longitude longitude
     * @param unit units that lon and lat get measured in
     * (default for Radian: north pole at pi/2, southpole at -pi/2)
     */
    void setLongitude(qreal longitude, GeoDataCoordinates::Unit unit = GeoDataCoordinates::Radian);

    /**
     * @brief retrieves the longitude of the GeoDataLookAt object
     * use the unit parameter to switch between Radian and DMS
     * @param unit units that lon and lat get measured in
     * (default for Radian: north pole at pi/2, southpole at -pi/2)
     * @return latitude
     */
    qreal longitude(GeoDataCoordinates::Unit unit = GeoDataCoordinates::Radian) const;

    /**
     * @brief retrieve the lat/lon/alt triple as a GeoDataCoordinates object
     * @return GeoDataCoordinates
     * @see longitude latitude altitude
     */
    GeoDataCoordinates coordinates() const;

    /**
     * @brief Change the distance (in meters) between the camera and the object looked at
     * @see range
     */
    void setRange(qreal range);

    /**
     * @brief Retrieve the distance (in meters) between the camera and the object looked at
     * @see setRange
     */
    qreal range() const;

    /**
     * @brief set the GeoDataCoordinates object
     * @param coordinates GeoDataCoordinates
     * @see GeoDataCoordinates
     */
    void setCoordinates(const GeoDataCoordinates &coordinates);

    /// Provides type information for downcasting a GeoNode
    const char *nodeType() const override;

    void detach();

private:
    GeoDataLookAtPrivate *d;
};
}
Q_DECLARE_METATYPE(Marble::GeoDataLookAt)
#endif
