// -*-c++-*-
// SPDX-License-Identifier: LGPL-2.1-only
// Copyright (C) 2021 James Hogan <james@albanarts.com>

#ifndef OSGXR_MirrorSettings
#define OSGXR_MirrorSettings 1

#include <osgXR/Export>

namespace osgXR {

class OSGXR_EXPORT MirrorSettings
{
    public:

        MirrorSettings();

        /// Equality operator.
        bool operator == (const MirrorSettings &other) const
        {
            return _mirrorMode == other._mirrorMode &&
                   (_mirrorMode != MIRROR_SINGLE ||
                    _mirrorViewIndex == other._mirrorViewIndex);
        }

        /// Inequality operator.
        bool operator != (const MirrorSettings &other) const
        {
            return _mirrorMode != other._mirrorMode ||
                   (_mirrorMode == MIRROR_SINGLE &&
                    _mirrorViewIndex != other._mirrorViewIndex);
        }

        /// Type of VR mirror to show.
        typedef enum MirrorMode
        {
            /// Choose automatically.
            MIRROR_AUTOMATIC,
            /// Render nothing to the mirror.
            MIRROR_NONE,
            /// Render a single view fullscreen to the mirror.
            MIRROR_SINGLE,
            /// Render left & right views side by side.
            MIRROR_LEFT_RIGHT,
        } MirrorMode;
        /// Set the mirror mode to use.
        void setMirror(MirrorMode mode, int viewIndex = -1)
        {
            _mirrorMode = mode;
            _mirrorViewIndex = viewIndex;
        }
        /// Get the mirror mode to use.
        MirrorMode getMirrorMode() const
        {
            return _mirrorMode;
        }
        /// Get the mirror view index.
        int getMirrorViewIndex() const
        {
            return _mirrorViewIndex;
        }

    protected:

        // Mirror mode
        MirrorMode _mirrorMode;
        int _mirrorViewIndex;
};

}

#endif