Constructs a quad.
CL_Quadx< Typgt;::CL_QL_Quadx(); CL_Quadx< Typgt;::CL_QL_Quadx( const CL_Vec2 < Type > & new_p, const CL_Vec2 < Type > & new_q, const CL_Vec2 < Type > & new_r, const CL_Vec2 < Type > & new_s); CL_Quadx< Typgt;::CL_QL_Quadx( const CL_Rectx < Type > & rect); CL_Quadx< Typgt;::CL_QL_Quadx( const CL_Quadx < Type > & quad);