void Compute(const Standard_Real P1,const Standard_Real P2,
const Standard_Real Ra,const Standard_Real Rb,const gp_XY& Xd,const gp_XY& Yd,
const gp_XY& O,Bnd_Box2d& B) ;

void Compute(const Standard_Real P1,const Standard_Real P2,
const Standard_Real Ra,const Standard_Real Rb,const gp_XYZ& Xd,const gp_XYZ& Yd,
const gp_XYZ& O,Bnd_Box& B) ;