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  **
  ** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
  ** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
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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 {
  
  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;
  
  private:
      QVector3D m_origin;
      QVector3D m_direction;
      float m_distance;
  };
  QT3D_DECLARE_TYPEINFO(Qt3DRender, 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 Qt3DRender
  QT_END_NAMESPACE
  
  inline bool qFuzzyCompare(const Qt3DRender::QRay3D &ray1, const Qt3DRender::QRay3D &ray2)
  {
      return qFuzzyCompare(ray1.origin(), ray2.origin()) &&
             qFuzzyCompare(ray1.direction(), ray2.direction());
  }
  
  Q_DECLARE_METATYPE(Qt3DRender::QRay3D) // LCOV_EXCL_LINE
  
  #endif // QT3DRENDER_QRAY3D_H
  