Program Listing for File joint-planar.hpp

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//
// Copyright (c) 2015-2020 CNRS INRIA
// Copyright (c) 2015-2016 Wandercraft, 86 rue de Paris 91400 Orsay, France.
//

#ifndef __pinocchio_multibody_joint_planar_hpp__
#define __pinocchio_multibody_joint_planar_hpp__

#include "pinocchio/macros.hpp"
#include "pinocchio/multibody/joint/joint-base.hpp"
#include "pinocchio/spatial/cartesian-axis.hpp"
#include "pinocchio/multibody/joint-motion-subspace.hpp"
#include "pinocchio/spatial/motion.hpp"
#include "pinocchio/spatial/inertia.hpp"

namespace pinocchio
{

  template<typename Scalar, int Options = context::Options>
  struct MotionPlanarTpl;
  typedef MotionPlanarTpl<context::Scalar> MotionPlanar;

  template<typename Scalar, int Options>
  struct SE3GroupAction<MotionPlanarTpl<Scalar, Options>>
  {
    typedef MotionTpl<Scalar, Options> ReturnType;
  };

  template<typename Scalar, int Options, typename MotionDerived>
  struct MotionAlgebraAction<MotionPlanarTpl<Scalar, Options>, MotionDerived>
  {
    typedef MotionTpl<Scalar, Options> ReturnType;
  };

  template<typename _Scalar, int _Options>
  struct traits<MotionPlanarTpl<_Scalar, _Options>>
  {
    typedef _Scalar Scalar;
    enum
    {
      Options = _Options
    };
    typedef Eigen::Matrix<Scalar, 3, 1, Options> Vector3;
    typedef Eigen::Matrix<Scalar, 6, 1, Options> Vector6;
    typedef Eigen::Matrix<Scalar, 4, 4, Options> Matrix4;
    typedef Eigen::Matrix<Scalar, 6, 6, Options> Matrix6;
    typedef typename PINOCCHIO_EIGEN_REF_CONST_TYPE(Vector6) ToVectorConstReturnType;
    typedef typename PINOCCHIO_EIGEN_REF_TYPE(Vector6) ToVectorReturnType;
    typedef Vector3 AngularType;
    typedef Vector3 LinearType;
    typedef const Vector3 ConstAngularType;
    typedef const Vector3 ConstLinearType;
    typedef Matrix6 ActionMatrixType;
    typedef Matrix4 HomogeneousMatrixType;
    typedef MotionTpl<Scalar, Options> MotionPlain;
    typedef MotionPlain PlainReturnType;
    enum
    {
      LINEAR = 0,
      ANGULAR = 3
    };
  }; // traits MotionPlanarTpl

  template<typename _Scalar, int _Options>
  struct MotionPlanarTpl : MotionBase<MotionPlanarTpl<_Scalar, _Options>>
  {
    EIGEN_MAKE_ALIGNED_OPERATOR_NEW
    MOTION_TYPEDEF_TPL(MotionPlanarTpl);

    typedef CartesianAxis<2> ZAxis;

    MotionPlanarTpl()
    {
    }

    MotionPlanarTpl(const Scalar & x_dot, const Scalar & y_dot, const Scalar & theta_dot)
    {
      m_data << x_dot, y_dot, theta_dot;
    }

    template<typename Vector3Like>
    MotionPlanarTpl(const Eigen::MatrixBase<Vector3Like> & vj)
    : m_data(vj)
    {
      EIGEN_STATIC_ASSERT_VECTOR_SPECIFIC_SIZE(Vector3Like, 3);
    }

    inline PlainReturnType plain() const
    {
      return PlainReturnType(
        typename PlainReturnType::Vector3(vx(), vy(), Scalar(0)),
        typename PlainReturnType::Vector3(Scalar(0), Scalar(0), wz()));
    }

    template<typename Derived>
    void addTo(MotionDense<Derived> & other) const
    {
      other.linear()[0] += vx();
      other.linear()[1] += vy();
      other.angular()[2] += wz();
    }

    template<typename MotionDerived>
    void setTo(MotionDense<MotionDerived> & other) const
    {
      other.linear() << vx(), vy(), (Scalar)0;
      other.angular() << (Scalar)0, (Scalar)0, wz();
    }

    template<typename S2, int O2, typename D2>
    void se3Action_impl(const SE3Tpl<S2, O2> & m, MotionDense<D2> & v) const
    {
      v.angular().noalias() = m.rotation().col(2) * wz();
      v.linear().noalias() = m.rotation().template leftCols<2>() * m_data.template head<2>();
      v.linear() += m.translation().cross(v.angular());
    }

    template<typename S2, int O2>
    MotionPlain se3Action_impl(const SE3Tpl<S2, O2> & m) const
    {
      MotionPlain res;
      se3Action_impl(m, res);
      return res;
    }

    template<typename S2, int O2, typename D2>
    void se3ActionInverse_impl(const SE3Tpl<S2, O2> & m, MotionDense<D2> & v) const
    {
      // Linear
      // TODO: use v.angular() as temporary variable
      Vector3 v3_tmp;
      ZAxis::alphaCross(wz(), m.translation(), v3_tmp);
      v3_tmp[0] += vx();
      v3_tmp[1] += vy();
      v.linear().noalias() = m.rotation().transpose() * v3_tmp;

      // Angular
      v.angular().noalias() = m.rotation().transpose().col(2) * wz();
    }

    template<typename S2, int O2>
    MotionPlain se3ActionInverse_impl(const SE3Tpl<S2, O2> & m) const
    {
      MotionPlain res;
      se3ActionInverse_impl(m, res);
      return res;
    }

    template<typename M1, typename M2>
    void motionAction(const MotionDense<M1> & v, MotionDense<M2> & mout) const
    {
      // Linear
      ZAxis::alphaCross(-wz(), v.linear(), mout.linear());

      typename M1::ConstAngularType w_in = v.angular();
      typename M2::LinearType v_out = mout.linear();

      v_out[0] -= w_in[2] * vy();
      v_out[1] += w_in[2] * vx();
      v_out[2] += -w_in[1] * vx() + w_in[0] * vy();

      // Angular
      ZAxis::alphaCross(-wz(), v.angular(), mout.angular());
    }

    template<typename M1>
    MotionPlain motionAction(const MotionDense<M1> & v) const
    {
      MotionPlain res;
      motionAction(v, res);
      return res;
    }

    const Scalar & vx() const
    {
      return m_data[0];
    }
    Scalar & vx()
    {
      return m_data[0];
    }

    const Scalar & vy() const
    {
      return m_data[1];
    }
    Scalar & vy()
    {
      return m_data[1];
    }

    const Scalar & wz() const
    {
      return m_data[2];
    }
    Scalar & wz()
    {
      return m_data[2];
    }

    const Vector3 & data() const
    {
      return m_data;
    }
    Vector3 & data()
    {
      return m_data;
    }

    bool isEqual_impl(const MotionPlanarTpl & other) const
    {
      return internal::comparison_eq(m_data, other.m_data);
    }

  protected:
    Vector3 m_data;

  }; // struct MotionPlanarTpl

  template<typename Scalar, int Options, typename MotionDerived>
  inline typename MotionDerived::MotionPlain
  operator+(const MotionPlanarTpl<Scalar, Options> & m1, const MotionDense<MotionDerived> & m2)
  {
    typename MotionDerived::MotionPlain result(m2);
    result.linear()[0] += m1.vx();
    result.linear()[1] += m1.vy();

    result.angular()[2] += m1.wz();

    return result;
  }

  template<typename Scalar, int Options>
  struct JointMotionSubspacePlanarTpl;

  template<typename _Scalar, int _Options>
  struct traits<JointMotionSubspacePlanarTpl<_Scalar, _Options>>
  {
    typedef _Scalar Scalar;
    enum
    {
      Options = _Options
    };
    enum
    {
      LINEAR = 0,
      ANGULAR = 3
    };
    typedef MotionPlanarTpl<Scalar, Options> JointMotion;
    typedef Eigen::Matrix<Scalar, 3, 1, Options> JointForce;
    typedef Eigen::Matrix<Scalar, 6, 3, Options> DenseBase;
    typedef Eigen::Matrix<Scalar, 3, 3, Options> ReducedSquaredMatrix;

    typedef DenseBase MatrixReturnType;
    typedef const DenseBase ConstMatrixReturnType;

    typedef typename ReducedSquaredMatrix::IdentityReturnType StDiagonalMatrixSOperationReturnType;
  }; // struct traits JointMotionSubspacePlanarTpl

  template<typename _Scalar, int _Options>
  struct JointMotionSubspacePlanarTpl
  : JointMotionSubspaceBase<JointMotionSubspacePlanarTpl<_Scalar, _Options>>
  {
    EIGEN_MAKE_ALIGNED_OPERATOR_NEW
    PINOCCHIO_CONSTRAINT_TYPEDEF_TPL(JointMotionSubspacePlanarTpl)

    enum
    {
      NV = 3
    };

    JointMotionSubspacePlanarTpl() {};

    template<typename Vector3Like>
    JointMotion __mult__(const Eigen::MatrixBase<Vector3Like> & vj) const
    {
      EIGEN_STATIC_ASSERT_VECTOR_SPECIFIC_SIZE(Vector3Like, 3);
      return JointMotion(vj);
    }

    int nv_impl() const
    {
      return NV;
    }

    struct ConstraintTranspose : JointMotionSubspaceTransposeBase<JointMotionSubspacePlanarTpl>
    {
      const JointMotionSubspacePlanarTpl & ref;
      ConstraintTranspose(const JointMotionSubspacePlanarTpl & ref)
      : ref(ref)
      {
      }

      template<typename Derived>
      typename ForceDense<Derived>::Vector3 operator*(const ForceDense<Derived> & phi)
      {
        typedef typename ForceDense<Derived>::Vector3 Vector3;
        return Vector3(phi.linear()[0], phi.linear()[1], phi.angular()[2]);
      }

      /* [CRBA]  MatrixBase operator* (Constraint::Transpose S, ForceSet::Block) */
      template<typename Derived>
      friend typename Eigen::
        Matrix<typename Eigen::MatrixBase<Derived>::Scalar, 3, Derived::ColsAtCompileTime>
        operator*(const ConstraintTranspose &, const Eigen::MatrixBase<Derived> & F)
      {
        typedef typename Eigen::MatrixBase<Derived>::Scalar Scalar;
        typedef Eigen::Matrix<Scalar, 3, Derived::ColsAtCompileTime> MatrixReturnType;
        assert(F.rows() == 6);

        MatrixReturnType result(3, F.cols());
        result.template topRows<2>() = F.template topRows<2>();
        result.template bottomRows<1>() = F.template bottomRows<1>();
        return result;
      }

    }; // struct ConstraintTranspose

    ConstraintTranspose transpose() const
    {
      return ConstraintTranspose(*this);
    }

    DenseBase matrix_impl() const
    {
      DenseBase S;
      S.template block<3, 3>(Inertia::LINEAR, 0).setZero();
      S.template block<3, 3>(Inertia::ANGULAR, 0).setZero();
      S(Inertia::LINEAR + 0, 0) = Scalar(1);
      S(Inertia::LINEAR + 1, 1) = Scalar(1);
      S(Inertia::ANGULAR + 2, 2) = Scalar(1);
      return S;
    }

    template<typename S1, int O1>
    DenseBase se3Action(const SE3Tpl<S1, O1> & m) const
    {
      DenseBase X_subspace;

      // LINEAR
      X_subspace.template block<3, 2>(Motion::LINEAR, 0) = m.rotation().template leftCols<2>();
      X_subspace.template block<3, 1>(Motion::LINEAR, 2).noalias() =
        m.translation().cross(m.rotation().template rightCols<1>());

      // ANGULAR
      X_subspace.template block<3, 2>(Motion::ANGULAR, 0).setZero();
      X_subspace.template block<3, 1>(Motion::ANGULAR, 2) = m.rotation().template rightCols<1>();

      return X_subspace;
    }

    template<typename S1, int O1>
    DenseBase se3ActionInverse(const SE3Tpl<S1, O1> & m) const
    {
      DenseBase X_subspace;

      // LINEAR
      X_subspace.template block<3, 2>(Motion::LINEAR, 0) =
        m.rotation().transpose().template leftCols<2>();
      X_subspace.template block<3, 1>(Motion::ANGULAR, 2).noalias() =
        m.rotation().transpose() * m.translation(); // tmp variable
      X_subspace.template block<3, 1>(Motion::LINEAR, 2).noalias() =
        -X_subspace.template block<3, 1>(Motion::ANGULAR, 2)
           .cross(m.rotation().transpose().template rightCols<1>());

      // ANGULAR
      X_subspace.template block<3, 2>(Motion::ANGULAR, 0).setZero();
      X_subspace.template block<3, 1>(Motion::ANGULAR, 2) =
        m.rotation().transpose().template rightCols<1>();

      return X_subspace;
    }

    template<typename MotionDerived>
    DenseBase motionAction(const MotionDense<MotionDerived> & m) const
    {
      const typename MotionDerived::ConstLinearType v = m.linear();
      const typename MotionDerived::ConstAngularType w = m.angular();
      DenseBase res(DenseBase::Zero());

      res(0, 1) = -w[2];
      res(0, 2) = v[1];
      res(1, 0) = w[2];
      res(1, 2) = -v[0];
      res(2, 0) = -w[1];
      res(2, 1) = w[0];
      res(3, 2) = w[1];
      res(4, 2) = -w[0];

      return res;
    }

    bool isEqual(const JointMotionSubspacePlanarTpl &) const
    {
      return true;
    }

  }; // struct JointMotionSubspacePlanarTpl

  template<typename MotionDerived, typename S2, int O2>
  inline typename MotionDerived::MotionPlain
  operator^(const MotionDense<MotionDerived> & m1, const MotionPlanarTpl<S2, O2> & m2)
  {
    return m2.motionAction(m1);
  }

  /* [CRBA] ForceSet operator* (Inertia Y,Constraint S) */
  template<typename S1, int O1, typename S2, int O2>
  inline typename Eigen::Matrix<S1, 6, 3, O1>
  operator*(const InertiaTpl<S1, O1> & Y, const JointMotionSubspacePlanarTpl<S2, O2> &)
  {
    typedef InertiaTpl<S1, O1> Inertia;
    typedef typename Inertia::Scalar Scalar;
    typedef Eigen::Matrix<S1, 6, 3, O1> ReturnType;

    ReturnType M;
    const Scalar mass = Y.mass();
    const typename Inertia::Vector3 & com = Y.lever();
    const typename Inertia::Symmetric3 & inertia = Y.inertia();

    M.template topLeftCorner<3, 3>().setZero();
    M.template topLeftCorner<2, 2>().diagonal().fill(mass);

    const typename Inertia::Vector3 mc(mass * com);
    M.template rightCols<1>().template head<2>() << -mc(1), mc(0);

    M.template bottomLeftCorner<3, 2>() << (Scalar)0, -mc(2), mc(2), (Scalar)0, -mc(1), mc(0);
    M.template rightCols<1>().template tail<3>() = inertia.data().template tail<3>();
    M.template rightCols<1>()[3] -= mc(0) * com(2);
    M.template rightCols<1>()[4] -= mc(1) * com(2);
    M.template rightCols<1>()[5] += mass * (com(0) * com(0) + com(1) * com(1));

    return M;
  }

  /* [ABA] Y*S operator (Inertia Y,Constraint S) */
  //  inline Eigen::Matrix<context::Scalar,6,1>

  template<typename M6Like, typename S2, int O2>
  inline Eigen::Matrix<S2, 6, 3, O2>
  operator*(const Eigen::MatrixBase<M6Like> & Y, const JointMotionSubspacePlanarTpl<S2, O2> &)
  {
    EIGEN_STATIC_ASSERT_MATRIX_SPECIFIC_SIZE(M6Like, 6, 6);
    typedef Eigen::Matrix<S2, 6, 3, O2> Matrix63;

    Matrix63 IS;
    IS.template leftCols<2>() = Y.template leftCols<2>();
    IS.template rightCols<1>() = Y.template rightCols<1>();

    return IS;
  }

  template<typename S1, int O1>
  struct SE3GroupAction<JointMotionSubspacePlanarTpl<S1, O1>>
  {
    typedef Eigen::Matrix<S1, 6, 3, O1> ReturnType;
  };

  template<typename S1, int O1, typename MotionDerived>
  struct MotionAlgebraAction<JointMotionSubspacePlanarTpl<S1, O1>, MotionDerived>
  {
    typedef Eigen::Matrix<S1, 6, 3, O1> ReturnType;
  };

  template<typename Scalar, int Options>
  struct JointPlanarTpl;

  template<typename _Scalar, int _Options>
  struct traits<JointPlanarTpl<_Scalar, _Options>>
  {
    enum
    {
      NQ = 4,
      NV = 3,
      NVExtended = 3
    };
    enum
    {
      Options = _Options
    };
    typedef _Scalar Scalar;
    typedef JointDataPlanarTpl<Scalar, Options> JointDataDerived;
    typedef JointModelPlanarTpl<Scalar, Options> JointModelDerived;
    typedef JointMotionSubspacePlanarTpl<Scalar, Options> Constraint_t;
    typedef SE3Tpl<Scalar, Options> Transformation_t;
    typedef MotionPlanarTpl<Scalar, Options> Motion_t;
    typedef MotionZeroTpl<Scalar, Options> Bias_t;

    // [ABA]
    typedef Eigen::Matrix<Scalar, 6, NV, Options> U_t;
    typedef Eigen::Matrix<Scalar, NV, NV, Options> D_t;
    typedef Eigen::Matrix<Scalar, 6, NV, Options> UD_t;

    typedef Eigen::Matrix<Scalar, NQ, 1, Options> ConfigVector_t;
    typedef Eigen::Matrix<Scalar, NV, 1, Options> TangentVector_t;

    typedef boost::mpl::false_ is_mimicable_t;

    PINOCCHIO_JOINT_DATA_BASE_ACCESSOR_DEFAULT_RETURN_TYPE
  };

  template<typename _Scalar, int _Options>
  struct traits<JointDataPlanarTpl<_Scalar, _Options>>
  {
    typedef JointPlanarTpl<_Scalar, _Options> JointDerived;
    typedef _Scalar Scalar;
  };
  template<typename _Scalar, int _Options>
  struct traits<JointModelPlanarTpl<_Scalar, _Options>>
  {
    typedef JointPlanarTpl<_Scalar, _Options> JointDerived;
    typedef _Scalar Scalar;
  };

  template<typename _Scalar, int _Options>
  struct JointDataPlanarTpl : public JointDataBase<JointDataPlanarTpl<_Scalar, _Options>>
  {
    EIGEN_MAKE_ALIGNED_OPERATOR_NEW
    typedef JointPlanarTpl<_Scalar, _Options> JointDerived;
    PINOCCHIO_JOINT_DATA_TYPEDEF_TEMPLATE(JointDerived);
    PINOCCHIO_JOINT_DATA_BASE_DEFAULT_ACCESSOR

    ConfigVector_t joint_q;
    TangentVector_t joint_v;

    Constraint_t S;
    Transformation_t M;
    Motion_t v;
    Bias_t c;

    // [ABA] specific data
    U_t U;
    D_t Dinv;
    UD_t UDinv;
    D_t StU;

    JointDataPlanarTpl()
    : joint_q(Scalar(0), Scalar(0), Scalar(1), Scalar(0))
    , joint_v(TangentVector_t::Zero())
    , M(Transformation_t::Identity())
    , v(Motion_t::Vector3::Zero())
    , U(U_t::Zero())
    , Dinv(D_t::Zero())
    , UDinv(UD_t::Zero())
    , StU(D_t::Zero())
    {
    }

    static std::string classname()
    {
      return std::string("JointDataPlanar");
    }
    std::string shortname() const
    {
      return classname();
    }

  }; // struct JointDataPlanarTpl

  PINOCCHIO_JOINT_CAST_TYPE_SPECIALIZATION(JointModelPlanarTpl);
  template<typename _Scalar, int _Options>
  struct JointModelPlanarTpl : public JointModelBase<JointModelPlanarTpl<_Scalar, _Options>>
  {
    EIGEN_MAKE_ALIGNED_OPERATOR_NEW
    typedef JointPlanarTpl<_Scalar, _Options> JointDerived;
    PINOCCHIO_JOINT_TYPEDEF_TEMPLATE(JointDerived);

    typedef JointModelBase<JointModelPlanarTpl> Base;
    using Base::id;
    using Base::idx_q;
    using Base::idx_v;
    using Base::idx_vExtended;
    using Base::setIndexes;

    JointDataDerived createData() const
    {
      return JointDataDerived();
    }

    const std::vector<bool> hasConfigurationLimit() const
    {
      return {true, true, false, false};
    }

    const std::vector<bool> hasConfigurationLimitInTangent() const
    {
      return {true, true, false};
    }

    template<typename ConfigVector>
    inline void
    forwardKinematics(Transformation_t & M, const Eigen::MatrixBase<ConfigVector> & q_joint) const
    {
      const Scalar &c_theta = q_joint(2), &s_theta = q_joint(3);

      M.rotation().template topLeftCorner<2, 2>() << c_theta, -s_theta, s_theta, c_theta;
      M.translation().template head<2>() = q_joint.template head<2>();
    }

    template<typename ConfigVector>
    void calc(JointDataDerived & data, const typename Eigen::MatrixBase<ConfigVector> & qs) const
    {
      data.joint_q = qs.template segment<NQ>(idx_q());

      const Scalar &c_theta = data.joint_q(2), &s_theta = data.joint_q(3);

      data.M.rotation().template topLeftCorner<2, 2>() << c_theta, -s_theta, s_theta, c_theta;
      data.M.translation().template head<2>() = data.joint_q.template head<2>();
    }

    template<typename TangentVector>
    void
    calc(JointDataDerived & data, const Blank, const typename Eigen::MatrixBase<TangentVector> & vs)
      const
    {
      data.joint_v = vs.template segment<NV>(idx_v());

#define q_dot data.joint_v
      data.v.vx() = q_dot(0);
      data.v.vy() = q_dot(1);
      data.v.wz() = q_dot(2);
#undef q_dot
    }

    template<typename ConfigVector, typename TangentVector>
    void calc(
      JointDataDerived & data,
      const typename Eigen::MatrixBase<ConfigVector> & qs,
      const typename Eigen::MatrixBase<TangentVector> & vs) const
    {
      calc(data, qs.derived());

      data.joint_v = vs.template segment<NV>(idx_v());

#define q_dot data.joint_v
      data.v.vx() = q_dot(0);
      data.v.vy() = q_dot(1);
      data.v.wz() = q_dot(2);
#undef q_dot
    }

    template<typename VectorLike, typename Matrix6Like>
    void calc_aba(
      JointDataDerived & data,
      const Eigen::MatrixBase<VectorLike> & armature,
      const Eigen::MatrixBase<Matrix6Like> & I,
      const bool update_I) const
    {
      data.U.template leftCols<2>() = I.template leftCols<2>();
      data.U.template rightCols<1>() = I.template rightCols<1>();

      data.StU.template leftCols<2>() = data.U.template topRows<2>().transpose();
      data.StU.template rightCols<1>() = data.U.template bottomRows<1>();

      data.StU.diagonal() += armature;
      internal::PerformStYSInversion<Scalar>::run(data.StU, data.Dinv);

      data.UDinv.noalias() = data.U * data.Dinv;

      if (update_I)
        PINOCCHIO_EIGEN_CONST_CAST(Matrix6Like, I).noalias() -= data.UDinv * data.U.transpose();
    }

    static std::string classname()
    {
      return std::string("JointModelPlanar");
    }
    std::string shortname() const
    {
      return classname();
    }

    template<typename NewScalar>
    JointModelPlanarTpl<NewScalar, Options> cast() const
    {
      typedef JointModelPlanarTpl<NewScalar, Options> ReturnType;
      ReturnType res;
      res.setIndexes(id(), idx_q(), idx_v(), idx_vExtended());
      return res;
    }

  }; // struct JointModelPlanarTpl

  template<typename Scalar, int Options>
  struct ConfigVectorAffineTransform<JointPlanarTpl<Scalar, Options>>
  {
    typedef LinearAffineTransform Type;
  };
} // namespace pinocchio

#include <boost/type_traits.hpp>

namespace boost
{
  template<typename Scalar, int Options>
  struct has_nothrow_constructor<::pinocchio::JointModelPlanarTpl<Scalar, Options>>
  : public integral_constant<bool, true>
  {
  };

  template<typename Scalar, int Options>
  struct has_nothrow_copy<::pinocchio::JointModelPlanarTpl<Scalar, Options>>
  : public integral_constant<bool, true>
  {
  };

  template<typename Scalar, int Options>
  struct has_nothrow_constructor<::pinocchio::JointDataPlanarTpl<Scalar, Options>>
  : public integral_constant<bool, true>
  {
  };

  template<typename Scalar, int Options>
  struct has_nothrow_copy<::pinocchio::JointDataPlanarTpl<Scalar, Options>>
  : public integral_constant<bool, true>
  {
  };
} // namespace boost

#endif // ifndef __pinocchio_multibody_joint_planar_hpp__