class ROOT::Math::DisplacementVector2D<ROOT::Math::Polar2D<double>,ROOT::Math::DefaultCoordinateSystemTag>

Assignment from a foreign 2D vector type, for example, Hep2Vector
Precondition: v must implement methods x() and  y()

 ------ Set, Get, and access coordinate data ------

Retrieve a copy of the coordinates object

Set internal data based on 2 Scalar numbers.
These are for example (x,y) for a cartesian vector or (r,phi) for a polar vector

get internal data into 2 Scalar numbers.
These are for example (x,y) for a cartesian vector or (r,phi) for a polar vector

 ------------------- Equality -----------------

Exact equality

 ------ Individual element access, in various coordinate systems ------

Cartesian X, converting if necessary from internal coordinate system.

Cartesian Y, converting if necessary from internal coordinate system.

Polar R, converting if necessary from internal coordinate system.

Polar phi, converting if necessary from internal coordinate system.

 ----- Other fundamental properties -----

Magnitute squared ( r^2 in spherical coordinate)

return unit vector parallel to this

 ------ Setting individual elements present in coordinate system ------

Change X - Cartesian2D coordinates only

Change Y - Cartesian2D coordinates only

Change R - Polar2D coordinates only

Change Phi - Polar2D  coordinates

multiply this vector by a scalar quantity

divide this vector by a scalar quantity

DisplacementVector2D tmp(*this);
tmp.Negate();

Division of a vector with a real number

Rotate by an angle

 Limited backward name compatibility with CLHEP

 ---------- DisplacementVector2D class template ends here ------------


Addition of DisplacementVector2D vectors.
The (coordinate system) type of the returned vector is defined to
be identical to that of the first vector, which is passed by value

Difference between two DisplacementVector2D vectors.
The (coordinate system) type of the returned vector is defined to
be identical to that of the first vector.