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#ifndef QT3DRENDER_QRAY3D_H
#define QT3DRENDER_QRAY3D_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of other Qt classes.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <Qt3DRender/qt3drender_global.h>
#include <QtGui/qvector3d.h>
#include <QtGui/qmatrix4x4.h>

QT_BEGIN_NAMESPACE

namespace Qt3DRender {
namespace RayCasting {

class QT3DRENDERSHARED_EXPORT QRay3D
{
public:
    QRay3D();
    explicit QRay3D(const QVector3D &origin, const QVector3D &direction = QVector3D(0.0f, 0.0f, 1.0f), float distance = 1.0f);
    ~QRay3D();

    QVector3D origin() const;
    void setOrigin(const QVector3D &value);

    QVector3D direction() const;
    void setDirection(const QVector3D &value);

    float distance() const;
    void setDistance(float distance);

    bool contains(const QVector3D &point) const;
    bool contains(const QRay3D &ray) const;

    QVector3D point(float t) const;
    float projectedDistance(const QVector3D &point) const;

    QVector3D project(const QVector3D &vector) const;

    float distance(const QVector3D &point) const;

    QRay3D &transform(const QMatrix4x4 &matrix);
    QRay3D transformed(const QMatrix4x4 &matrix) const;

    bool operator==(const QRay3D &other) const;
    bool operator!=(const QRay3D &other) const;

    bool isValid() const { return !m_direction.isNull() && !qFuzzyIsNull(m_distance); }

private:
    QVector3D m_origin;
    QVector3D m_direction;
    float m_distance;
};
QT3D_DECLARE_TYPEINFO_2(Qt3DRender, RayCasting, QRay3D, Q_MOVABLE_TYPE)


#ifndef QT_NO_DEBUG_STREAM
QT3DRENDERSHARED_EXPORT QDebug operator<<(QDebug dbg, const QRay3D &ray);
#endif

#ifndef QT_NO_DATASTREAM
QT3DRENDERSHARED_EXPORT QDataStream &operator<<(QDataStream &stream, const QRay3D &ray);
QT3DRENDERSHARED_EXPORT QDataStream &operator>>(QDataStream &stream, QRay3D &ray);
#endif

} // namespace RayCasting
} // namespace Qt3DRender
QT_END_NAMESPACE

inline bool qFuzzyCompare(const Qt3DRender::RayCasting::QRay3D &ray1, const Qt3DRender::RayCasting::QRay3D &ray2)
{
    return qFuzzyCompare(ray1.origin(), ray2.origin()) &&
           qFuzzyCompare(ray1.direction(), ray2.direction());
}

Q_DECLARE_METATYPE(Qt3DRender::RayCasting::QRay3D) // LCOV_EXCL_LINE

#endif // QT3DRENDER_QRAY3D_H
