/// Creation of plane by coefficients (Ax+By+Cz+D=0)
GeomAPI_Pln(const double theA, const double theB, const double theC, const double theD);
/// Returns a point of this plane
/// Creation of plane by coefficients (Ax+By+Cz+D=0)
GeomAPI_Pln(const double theA, const double theB, const double theC, const double theD);
/// Returns a point of this plane