+
+ /// returns coordinates of the direction
+ GEOMAPI_EXPORT
+ const std::shared_ptr<GeomAPI_XYZ> xyz();
+
+ /// inverses the direction
+ GEOMAPI_EXPORT void reverse();
+
+ /// result is a scalar product of directions
+ GEOMAPI_EXPORT
+ double dot(const std::shared_ptr<GeomAPI_Dir>& theArg) const;
+ /// result is a cross product of two directions
+ GEOMAPI_EXPORT
+ const std::shared_ptr<GeomAPI_XYZ> cross(const std::shared_ptr<GeomAPI_Dir>& theArg) const;
+
+ /// calculates angle between two directions
+ GEOMAPI_EXPORT
+ double angle(const std::shared_ptr<GeomAPI_Dir>& theArg) const;
+
+ /// \return true if the angle between this unit vector and
+ /// theDir unit vector is equal to 0 or to Pi.
+ GEOMAPI_EXPORT
+ bool isParallel(const std::shared_ptr<GeomAPI_Dir> theDir,
+ const double theTolerance = 1.e-7) const;
+
+