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File: | bindings/python/crocoddyl/core/constraints/residual.cpp |
Date: | 2025-03-26 19:23:43 |
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1 | /////////////////////////////////////////////////////////////////////////////// | ||
2 | // BSD 3-Clause License | ||
3 | // | ||
4 | // Copyright (C) 2021-2025, University of Edinburgh, Heriot-Watt University | ||
5 | // Copyright note valid unless otherwise stated in individual files. | ||
6 | // All rights reserved. | ||
7 | /////////////////////////////////////////////////////////////////////////////// | ||
8 | |||
9 | #include "crocoddyl/core/constraints/residual.hpp" | ||
10 | |||
11 | #include "python/crocoddyl/core/core.hpp" | ||
12 | |||
13 | namespace crocoddyl { | ||
14 | namespace python { | ||
15 | |||
16 | template <typename Model> | ||
17 | struct ConstraintModelResidualVisitor | ||
18 | : public bp::def_visitor<ConstraintModelResidualVisitor<Model>> { | ||
19 | typedef typename Model::ConstraintDataAbstract Data; | ||
20 | typedef typename Model::Base ModelBase; | ||
21 | typedef typename Model::StateAbstract State; | ||
22 | typedef typename Model::ResidualModelAbstract ResidualModel; | ||
23 | typedef typename Model::VectorXs VectorXs; | ||
24 | template <class PyClass> | ||
25 | 40 | void visit(PyClass& cl) const { | |
26 |
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40 | cl.def(bp::init<std::shared_ptr<State>, std::shared_ptr<ResidualModel>, |
27 | bp::optional<bool>>( | ||
28 | bp::args("self", "state", "residual", "T_act"), | ||
29 | "Initialize the residual constraint model as an equality " | ||
30 | "constraint.\n\n" | ||
31 | ":param state: state description\n" | ||
32 | ":param residual: residual model\n" | ||
33 | ":param T_act: false if we want to deactivate the residual at " | ||
34 | "the terminal node (default true)")) | ||
35 |
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80 | .def( |
36 | "calc", | ||
37 | static_cast<void (Model::*)( | ||
38 | const std::shared_ptr<Data>&, const Eigen::Ref<const VectorXs>&, | ||
39 | const Eigen::Ref<const VectorXs>&)>(&Model::calc), | ||
40 | bp::args("self", "data", "x", "u"), | ||
41 | "Compute the residual constraint.\n\n" | ||
42 | ":param data: constraint data\n" | ||
43 | ":param x: state point (dim. state.nx)\n" | ||
44 | ":param u: control input (dim. nu)") | ||
45 |
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80 | .def("calc", |
46 | static_cast<void (Model::*)(const std::shared_ptr<Data>&, | ||
47 | const Eigen::Ref<const VectorXs>&)>( | ||
48 | &Model::calc), | ||
49 | bp::args("self", "data", "x"), | ||
50 | "Compute the residual constraint based on state only.\n\n" | ||
51 | "It updates the constraint based on the state only. This function " | ||
52 | "is commonly used in the terminal nodes of an optimal control " | ||
53 | "problem.\n" | ||
54 | ":param data: constraint data\n" | ||
55 | ":param x: state point (dim. state.nx)") | ||
56 |
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80 | .def( |
57 | "calcDiff", | ||
58 | static_cast<void (Model::*)( | ||
59 | const std::shared_ptr<Data>&, const Eigen::Ref<const VectorXs>&, | ||
60 | const Eigen::Ref<const VectorXs>&)>(&Model::calcDiff), | ||
61 | bp::args("self", "data", "x", "u"), | ||
62 | "Compute the derivatives of the residual constraint.\n\n" | ||
63 | "It assumes that calc has been run first.\n" | ||
64 | ":param data: constraint data\n" | ||
65 | ":param x: state point (dim. state.nx)\n" | ||
66 | ":param u: control input (dim. nu)\n") | ||
67 |
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80 | .def("calcDiff", |
68 | static_cast<void (Model::*)(const std::shared_ptr<Data>&, | ||
69 | const Eigen::Ref<const VectorXs>&)>( | ||
70 | &Model::calcDiff), | ||
71 | bp::args("self", "data", "x"), | ||
72 | "Compute the derivatives of the residual constraint with respect " | ||
73 | "to the state only.\n\n" | ||
74 | "It updates the Jacobian of the constraint function based on the " | ||
75 | "state only. This function is commonly used in the terminal nodes " | ||
76 | "of an optimal control problem.\n" | ||
77 | ":param data: constraint data\n" | ||
78 | ":param x: state point (dim. state.nx)") | ||
79 |
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80 | .def("createData", &Model::createData, |
80 | 40 | bp::with_custodian_and_ward_postcall<0, 2>(), | |
81 | bp::args("self", "data"), | ||
82 | "Create the residual constraint data.\n\n" | ||
83 | "Each constraint model has its own data that needs to be " | ||
84 | "allocated. This function returns the allocated data for a " | ||
85 | "predefined constraint.\n" | ||
86 | ":param data: shared data\n" | ||
87 | ":return constraint data."); | ||
88 | 40 | } | |
89 | }; | ||
90 | |||
91 | #define CROCODDYL_CONSTRAINT_MODEL_RESIDUAL_PYTHON_BINDINGS(Scalar) \ | ||
92 | typedef ConstraintModelResidualTpl<Scalar> Model; \ | ||
93 | typedef ConstraintModelAbstractTpl<Scalar> ModelBase; \ | ||
94 | typedef typename ModelBase::StateAbstract State; \ | ||
95 | typedef typename ModelBase::ResidualModelAbstract ResidualModel; \ | ||
96 | typedef typename ModelBase::VectorXs VectorXs; \ | ||
97 | bp::register_ptr_to_python<std::shared_ptr<Model>>(); \ | ||
98 | bp::class_<Model, bp::bases<ModelBase>>( \ | ||
99 | "ConstraintModelResidual", \ | ||
100 | "This defines equality / inequality constraints based on a residual " \ | ||
101 | "vector and its bounds.", \ | ||
102 | bp::init<std::shared_ptr<State>, std::shared_ptr<ResidualModel>, \ | ||
103 | VectorXs, VectorXs, bp::optional<bool>>( \ | ||
104 | bp::args("self", "state", "residual", "lower", "upper", "T_act"), \ | ||
105 | "Initialize the residual constraint model as an inequality " \ | ||
106 | "constraint.\n\n" \ | ||
107 | ":param state: state description\n" \ | ||
108 | ":param residual: residual model\n" \ | ||
109 | ":param lower: lower bound\n" \ | ||
110 | ":param upper: upper bound\n" \ | ||
111 | ":param T_act: false if we want to deactivate the residual at the " \ | ||
112 | "terminal node (default true)")) \ | ||
113 | .def(ConstraintModelResidualVisitor<Model>()) \ | ||
114 | .def(CastVisitor<Model>()) \ | ||
115 | .def(PrintableVisitor<Model>()) \ | ||
116 | .def(CopyableVisitor<Model>()); | ||
117 | |||
118 | #define CROCODDYL_CONSTRAINT_DATA_RESIDUAL_PYTHON_BINDINGS(Scalar) \ | ||
119 | typedef ConstraintDataResidualTpl<Scalar> Data; \ | ||
120 | typedef ConstraintDataAbstractTpl<Scalar> DataBase; \ | ||
121 | typedef ConstraintModelResidualTpl<Scalar> Model; \ | ||
122 | typedef Model::DataCollectorAbstract DataCollector; \ | ||
123 | bp::register_ptr_to_python<std::shared_ptr<Data>>(); \ | ||
124 | bp::class_<Data, bp::bases<DataBase>>( \ | ||
125 | "ConstraintDataResidual", "Data for residual constraint.\n\n", \ | ||
126 | bp::init<Model*, DataCollector*>( \ | ||
127 | bp::args("self", "model", "data"), \ | ||
128 | "Create residual constraint data.\n\n" \ | ||
129 | ":param model: residual constraint model\n" \ | ||
130 | ":param data: shared data")[bp::with_custodian_and_ward< \ | ||
131 | 1, 2, bp::with_custodian_and_ward<1, 3>>()]) \ | ||
132 | .def(CopyableVisitor<Data>()); | ||
133 | |||
134 | 10 | void exposeConstraintResidual() { | |
135 |
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20 | CROCODDYL_PYTHON_SCALARS(CROCODDYL_CONSTRAINT_MODEL_RESIDUAL_PYTHON_BINDINGS) |
136 |
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20 | CROCODDYL_PYTHON_SCALARS(CROCODDYL_CONSTRAINT_DATA_RESIDUAL_PYTHON_BINDINGS) |
137 | 10 | } | |
138 | |||
139 | } // namespace python | ||
140 | } // namespace crocoddyl | ||
141 |