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/////////////////////////////////////////////////////////////////////////////// |
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// BSD 3-Clause License |
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// |
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// Copyright (C) 2021-2025, LAAS-CNRS, University of Edinburgh |
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// Copyright note valid unless otherwise stated in individual files. |
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// All rights reserved. |
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/////////////////////////////////////////////////////////////////////////////// |
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namespace crocoddyl { |
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template <typename Scalar> |
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ResidualModelFramePlacementTpl<Scalar>::ResidualModelFramePlacementTpl( |
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std::shared_ptr<StateMultibody> state, const pinocchio::FrameIndex id, |
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const SE3& pref, const std::size_t nu) |
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: Base(state, 6, nu, true, false, false), |
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id_(id), |
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pref_(pref), |
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oMf_inv_(pref.inverse()), |
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pin_model_(state->get_pinocchio()) { |
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if (static_cast<pinocchio::FrameIndex>(state->get_pinocchio()->nframes) <= |
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id) { |
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throw_pretty( |
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"Invalid argument: " |
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<< "the frame index is wrong (it does not exist in the robot)"); |
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} |
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} |
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template <typename Scalar> |
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ResidualModelFramePlacementTpl<Scalar>::ResidualModelFramePlacementTpl( |
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std::shared_ptr<StateMultibody> state, const pinocchio::FrameIndex id, |
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const SE3& pref) |
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: Base(state, 6, true, false, false), |
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id_(id), |
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pref_(pref), |
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oMf_inv_(pref.inverse()), |
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pin_model_(state->get_pinocchio()) { |
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if (static_cast<pinocchio::FrameIndex>(state->get_pinocchio()->nframes) <= |
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id) { |
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throw_pretty( |
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"Invalid argument: " |
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<< "the frame index is wrong (it does not exist in the robot)"); |
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} |
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} |
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template <typename Scalar> |
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void ResidualModelFramePlacementTpl<Scalar>::calc( |
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const std::shared_ptr<ResidualDataAbstract>& data, |
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const Eigen::Ref<const VectorXs>&, const Eigen::Ref<const VectorXs>&) { |
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Data* d = static_cast<Data*>(data.get()); |
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// Compute the frame placement w.r.t. the reference frame |
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pinocchio::updateFramePlacement(*pin_model_.get(), *d->pinocchio, id_); |
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d->rMf = oMf_inv_ * d->pinocchio->oMf[id_]; |
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data->r = pinocchio::log6(d->rMf).toVector(); |
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} |
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template <typename Scalar> |
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void ResidualModelFramePlacementTpl<Scalar>::calcDiff( |
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const std::shared_ptr<ResidualDataAbstract>& data, |
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const Eigen::Ref<const VectorXs>&, const Eigen::Ref<const VectorXs>&) { |
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Data* d = static_cast<Data*>(data.get()); |
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// Compute the derivatives of the frame placement |
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const std::size_t nv = state_->get_nv(); |
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pinocchio::Jlog6(d->rMf, d->rJf); |
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pinocchio::getFrameJacobian(*pin_model_.get(), *d->pinocchio, id_, |
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pinocchio::LOCAL, d->fJf); |
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data->Rx.leftCols(nv).noalias() = d->rJf * d->fJf; |
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} |
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template <typename Scalar> |
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std::shared_ptr<ResidualDataAbstractTpl<Scalar> > |
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ResidualModelFramePlacementTpl<Scalar>::createData( |
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DataCollectorAbstract* const data) { |
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return std::allocate_shared<Data>(Eigen::aligned_allocator<Data>(), this, |
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data); |
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} |
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template <typename Scalar> |
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template <typename NewScalar> |
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ResidualModelFramePlacementTpl<NewScalar> |
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ResidualModelFramePlacementTpl<Scalar>::cast() const { |
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typedef ResidualModelFramePlacementTpl<NewScalar> ReturnType; |
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typedef StateMultibodyTpl<NewScalar> StateType; |
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ReturnType ret( |
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std::static_pointer_cast<StateType>(state_->template cast<NewScalar>()), |
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id_, pref_.template cast<NewScalar>(), nu_); |
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return ret; |
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} |
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template <typename Scalar> |
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void ResidualModelFramePlacementTpl<Scalar>::print(std::ostream& os) const { |
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const Eigen::IOFormat fmt(2, Eigen::DontAlignCols, ", ", ";\n", "", "", "[", |
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"]"); |
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typename SE3::Quaternion qref; |
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pinocchio::quaternion::assignQuaternion(qref, pref_.rotation()); |
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os << "ResidualModelFramePlacement {frame=" << pin_model_->frames[id_].name |
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<< ", tref=" << pref_.translation().transpose().format(fmt) |
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<< ", qref=" << qref.coeffs().transpose().format(fmt) << "}"; |
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} |
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template <typename Scalar> |
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pinocchio::FrameIndex ResidualModelFramePlacementTpl<Scalar>::get_id() const { |
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return id_; |
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} |
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template <typename Scalar> |
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const pinocchio::SE3Tpl<Scalar>& |
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ResidualModelFramePlacementTpl<Scalar>::get_reference() const { |
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return pref_; |
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} |
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template <typename Scalar> |
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void ResidualModelFramePlacementTpl<Scalar>::set_id( |
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const pinocchio::FrameIndex id) { |
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id_ = id; |
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} |
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template <typename Scalar> |
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void ResidualModelFramePlacementTpl<Scalar>::set_reference( |
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const SE3& placement) { |
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pref_ = placement; |
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oMf_inv_ = placement.inverse(); |
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} |
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} // namespace crocoddyl |
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