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D2< Piecewise< SBasis > > Geom::tan2 ( Piecewise< SBasis > const &  angle,
double  tol,
unsigned  order 
)

tan2 is the pseudo-inverse of atan2. It takes an angle and returns a unit_vector that points in the direction of angle.

Parameters:
angle a piecewise function of angle wrt t.
tol the maximum error allowed.
order the maximum degree to use for approximation

Definition at line 210 of file sbasis-geometric.cpp.

References cos(), and sin().

                                                                    {
    return D2<Piecewise<SBasis> >(cos(angle, tol, order), sin(angle, tol, order));
}


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