| Directory: | ./ |
|---|---|
| File: | include/pinocchio/multibody/force-set.hpp |
| Date: | 2025-02-12 21:03:38 |
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| Lines: | 58 | 58 | 100.0% |
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| 1 | // | ||
| 2 | // Copyright (c) 2015 CNRS | ||
| 3 | // | ||
| 4 | |||
| 5 | #ifndef __pinocchio_spatial_force_set_hpp__ | ||
| 6 | #define __pinocchio_spatial_force_set_hpp__ | ||
| 7 | |||
| 8 | #include "pinocchio/spatial/fwd.hpp" | ||
| 9 | #include <Eigen/Geometry> | ||
| 10 | |||
| 11 | namespace pinocchio | ||
| 12 | { | ||
| 13 | template<typename _Scalar, int _Options> | ||
| 14 | class ForceSetTpl | ||
| 15 | { | ||
| 16 | public: | ||
| 17 | typedef _Scalar Scalar; | ||
| 18 | enum | ||
| 19 | { | ||
| 20 | Options = _Options | ||
| 21 | }; | ||
| 22 | typedef Eigen::Matrix<Scalar, 3, 1, Options> Vector3; | ||
| 23 | typedef Eigen::Matrix<Scalar, 3, 3, Options> Matrix3; | ||
| 24 | typedef Eigen::Matrix<Scalar, 6, 1, Options> Vector6; | ||
| 25 | typedef Eigen::Matrix<Scalar, 6, 6, Options> Matrix6; | ||
| 26 | typedef SE3Tpl<Scalar, Options> SE3; | ||
| 27 | |||
| 28 | typedef Eigen::Matrix<Scalar, 3, Eigen::Dynamic, Options> Matrix3x; | ||
| 29 | typedef Eigen::Matrix<Scalar, 6, Eigen::Dynamic, Options> Matrix6x; | ||
| 30 | |||
| 31 | public: | ||
| 32 | // Constructors | ||
| 33 | 3 | ForceSetTpl(const int & ncols) | |
| 34 | 3 | : size(ncols) | |
| 35 |
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3 | , m_f(3, ncols) |
| 36 |
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3 | , m_n(3, ncols) |
| 37 | { | ||
| 38 |
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3 | m_f.fill(NAN); |
| 39 |
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3 | m_n.fill(NAN); |
| 40 | 3 | } | |
| 41 | 9 | ForceSetTpl(const Matrix3x & linear, const Matrix3x & angular) | |
| 42 | 9 | : size((int)linear.cols()) | |
| 43 | 9 | , m_f(linear) | |
| 44 |
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9 | , m_n(angular) |
| 45 | { | ||
| 46 |
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9 | assert(linear.cols() == angular.cols()); |
| 47 | 9 | } | |
| 48 | |||
| 49 | 12 | Matrix6x matrix() const | |
| 50 | { | ||
| 51 |
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12 | Matrix6x F(6, size); |
| 52 |
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12 | F << m_f, m_n; |
| 53 | // F.template topRows<3>() = m_f; | ||
| 54 | // F.template bottomRows<3>() = m_n; | ||
| 55 | 12 | return F; | |
| 56 | } | ||
| 57 | operator Matrix6x() const | ||
| 58 | { | ||
| 59 | return matrix(); | ||
| 60 | } | ||
| 61 | |||
| 62 | // Getters | ||
| 63 | 6 | const Matrix3x & linear() const | |
| 64 | { | ||
| 65 | 6 | return m_f; | |
| 66 | } | ||
| 67 | 6 | const Matrix3x & angular() const | |
| 68 | { | ||
| 69 | 6 | return m_n; | |
| 70 | } | ||
| 71 | |||
| 72 | /// af = aXb.act(bf) | ||
| 73 | 4 | ForceSetTpl se3Action(const SE3 & m) const | |
| 74 | { | ||
| 75 |
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4 | Matrix3x Rf(m.rotation() * linear()); |
| 76 |
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8 | return ForceSetTpl(Rf, skew(m.translation()) * Rf + m.rotation() * angular()); |
| 77 | // TODO check if nothing better than explicitely calling skew | ||
| 78 | 4 | } | |
| 79 | /// bf = aXb.actInv(af) | ||
| 80 | ForceSetTpl se3ActionInverse(const SE3 & m) const | ||
| 81 | { | ||
| 82 | return ForceSetTpl( | ||
| 83 | m.rotation().transpose() * linear(), | ||
| 84 | m.rotation().transpose() * (angular() - skew(m.translation()) * linear())); | ||
| 85 | // TODO check if nothing better than explicitely calling skew | ||
| 86 | } | ||
| 87 | |||
| 88 | friend std::ostream & operator<<(std::ostream & os, const ForceSetTpl & phi) | ||
| 89 | { | ||
| 90 | os << "F =\n" << phi.linear() << std::endl << "Tau =\n" << phi.angular() << std::endl; | ||
| 91 | return os; | ||
| 92 | } | ||
| 93 | |||
| 94 | /* --- BLOCK ------------------------------------------------------------ */ | ||
| 95 | struct Block | ||
| 96 | { | ||
| 97 | ForceSetTpl & ref; | ||
| 98 | int idx, len; | ||
| 99 | 6 | Block(ForceSetTpl & ref, const int & idx, const int & len) | |
| 100 | 6 | : ref(ref) | |
| 101 | 6 | , idx(idx) | |
| 102 | 6 | , len(len) | |
| 103 | { | ||
| 104 | 6 | } | |
| 105 | |||
| 106 | 3 | Eigen::Block<ForceSetTpl::Matrix3x> linear() | |
| 107 | { | ||
| 108 | 3 | return ref.m_f.block(0, idx, 3, len); | |
| 109 | } | ||
| 110 | 3 | Eigen::Block<ForceSetTpl::Matrix3x> angular() | |
| 111 | { | ||
| 112 | 3 | return ref.m_n.block(0, idx, 3, len); | |
| 113 | } | ||
| 114 | 3 | Eigen::Block<const ForceSetTpl::Matrix3x> linear() const | |
| 115 | { | ||
| 116 | 3 | return ((const ForceSetTpl::Matrix3x &)(ref.m_f)).block(0, idx, 3, len); | |
| 117 | } | ||
| 118 | 3 | Eigen::Block<const ForceSetTpl::Matrix3x> angular() const | |
| 119 | { | ||
| 120 | 3 | return ((const ForceSetTpl::Matrix3x &)(ref.m_n)).block(0, idx, 3, len); | |
| 121 | } | ||
| 122 | |||
| 123 | 1 | ForceSetTpl::Matrix6x matrix() const | |
| 124 | { | ||
| 125 |
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1 | ForceSetTpl::Matrix6x res(6, len); |
| 126 |
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1 | res << linear(), angular(); |
| 127 | 1 | return res; | |
| 128 | } | ||
| 129 | |||
| 130 | 2 | Block & operator=(const ForceSetTpl & copy) | |
| 131 | { | ||
| 132 |
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2 | assert(copy.size == len); |
| 133 |
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2 | linear() = copy.linear(); // ref.m_f.block(0,idx,3,len) = copy.m_f; |
| 134 |
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2 | angular() = copy.angular(); // ref.m_n.block(0,idx,3,len) = copy.m_n; |
| 135 | 2 | return *this; | |
| 136 | } | ||
| 137 | |||
| 138 | Block & operator=(const ForceSetTpl::Block & copy) | ||
| 139 | { | ||
| 140 | assert(copy.len == len); | ||
| 141 | linear() = | ||
| 142 | copy.linear(); // ref.m_f.block(0,idx,3,len) = copy.ref.m_f.block(0,copy.idx,3,copy.len); | ||
| 143 | angular() = | ||
| 144 | copy.angular(); // ref.m_n.block(0,idx,3,len) = copy.ref.m_n.block(0,copy.idx,3,copy.len); | ||
| 145 | return *this; | ||
| 146 | } | ||
| 147 | |||
| 148 | template<typename D> | ||
| 149 | 1 | Block & operator=(const Eigen::MatrixBase<D> & m) | |
| 150 | { | ||
| 151 | eigen_assert(D::RowsAtCompileTime == 6); | ||
| 152 |
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1 | assert(m.cols() == len); |
| 153 |
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1 | linear() = m.template topRows<3>(); |
| 154 |
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1 | angular() = m.template bottomRows<3>(); |
| 155 | 1 | return *this; | |
| 156 | } | ||
| 157 | |||
| 158 | /// af = aXb.act(bf) | ||
| 159 | 2 | ForceSetTpl se3Action(const SE3 & m) const | |
| 160 | { | ||
| 161 | // const Eigen::Block<const Matrix3x> linear = ref.linear().block(0,idx,3,len); | ||
| 162 | // const Eigen::Block<const Matrix3x> angular = ref.angular().block(0,idx,3,len); | ||
| 163 |
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2 | Matrix3x Rf((m.rotation() * linear())); |
| 164 |
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4 | return ForceSetTpl(Rf, skew(m.translation()) * Rf + m.rotation() * angular()); |
| 165 | // TODO check if nothing better than explicitely calling skew | ||
| 166 | 2 | } | |
| 167 | /// bf = aXb.actInv(af) | ||
| 168 | ForceSetTpl se3ActionInverse(const SE3 & m) const | ||
| 169 | { | ||
| 170 | // const Eigen::Block<const Matrix3x> linear = ref.linear().block(0,idx,3,len); | ||
| 171 | // const Eigen::Block<const Matrix3x> angular = ref.angular().block(0,idx,3,len); | ||
| 172 | return ForceSetTpl( | ||
| 173 | m.rotation().transpose() * linear(), | ||
| 174 | m.rotation().transpose() * (angular() - skew(m.translation()) * linear())); | ||
| 175 | // TODO check if nothing better than explicitely calling skew | ||
| 176 | } | ||
| 177 | }; | ||
| 178 | |||
| 179 | 6 | Block block(const int & idx, const int & len) | |
| 180 | { | ||
| 181 | 6 | return Block(*this, idx, len); | |
| 182 | } | ||
| 183 | |||
| 184 | /* CRBA joint operators | ||
| 185 | * - ForceSet::Block = ForceSet | ||
| 186 | * - ForceSet operator* (Inertia Y,Constraint S) | ||
| 187 | * - MatrixBase operator* (Constraint::Transpose S, ForceSet::Block) | ||
| 188 | * - SE3::act(ForceSet::Block) | ||
| 189 | */ | ||
| 190 | |||
| 191 | public: // | ||
| 192 | private: | ||
| 193 | int size; | ||
| 194 | Matrix3x m_f, m_n; | ||
| 195 | }; | ||
| 196 | |||
| 197 | typedef ForceSetTpl<context::Scalar, context::Options> ForceSet; | ||
| 198 | |||
| 199 | template<> | ||
| 200 | struct SE3GroupAction<ForceSet::Block> | ||
| 201 | { | ||
| 202 | typedef ForceSet ReturnType; | ||
| 203 | }; | ||
| 204 | |||
| 205 | } // namespace pinocchio | ||
| 206 | |||
| 207 | #endif // ifndef __pinocchio_spatial_force_set_hpp__ | ||
| 208 |