Directory: | ./ |
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File: | bindings/python/crocoddyl/core/numdiff/diff-action.cpp |
Date: | 2025-01-16 08:47:40 |
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1 | /////////////////////////////////////////////////////////////////////////////// | ||
2 | // BSD 3-Clause License | ||
3 | // | ||
4 | // Copyright (C) 2019-2023, LAAS-CNRS, University of Edinburgh, | ||
5 | // Heriot-Watt University | ||
6 | // Copyright note valid unless otherwise stated in individual files. | ||
7 | // All rights reserved. | ||
8 | /////////////////////////////////////////////////////////////////////////////// | ||
9 | |||
10 | #include "crocoddyl/core/numdiff/diff-action.hpp" | ||
11 | |||
12 | #include "python/crocoddyl/core/core.hpp" | ||
13 | #include "python/crocoddyl/core/diff-action-base.hpp" | ||
14 | #include "python/crocoddyl/utils/copyable.hpp" | ||
15 | |||
16 | namespace crocoddyl { | ||
17 | namespace python { | ||
18 | |||
19 | 10 | void exposeDifferentialActionNumDiff() { | |
20 | bp::register_ptr_to_python< | ||
21 | 10 | boost::shared_ptr<DifferentialActionModelNumDiff> >(); | |
22 | |||
23 |
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10 | bp::class_<DifferentialActionModelNumDiff, |
24 | bp::bases<DifferentialActionModelAbstract> >( | ||
25 | "DifferentialActionModelNumDiff", | ||
26 | "Abstract class for computing calcDiff by using numerical " | ||
27 | "differentiation.\n\n", | ||
28 |
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10 | bp::init<boost::shared_ptr<DifferentialActionModelAbstract>, |
29 | bp::optional<bool> >( | ||
30 | 20 | bp::args("self", "model", "gaussApprox"), | |
31 | "Initialize the action model NumDiff.\n\n" | ||
32 | ":param model: action model where we compute the derivatives through " | ||
33 | "NumDiff,\n" | ||
34 | ":param gaussApprox: compute the Hessian using Gauss approximation " | ||
35 | "(default False)")) | ||
36 | .def<void (DifferentialActionModelNumDiff::*)( | ||
37 | const boost::shared_ptr<DifferentialActionDataAbstract>&, | ||
38 | const Eigen::Ref<const Eigen::VectorXd>&, | ||
39 | 20 | const Eigen::Ref<const Eigen::VectorXd>&)>( | |
40 | "calc", &DifferentialActionModelNumDiff::calc, | ||
41 |
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20 | bp::args("self", "data", "x", "u"), |
42 | "Compute the next state and cost value.\n\n" | ||
43 | "The system evolution is described in model.\n" | ||
44 | ":param data: NumDiff action data\n" | ||
45 | ":param x: state point (dim. state.nx)\n" | ||
46 | ":param u: control input (dim. nu)") | ||
47 | .def<void (DifferentialActionModelNumDiff::*)( | ||
48 | const boost::shared_ptr<DifferentialActionDataAbstract>&, | ||
49 |
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10 | const Eigen::Ref<const Eigen::VectorXd>&)>( |
50 | "calc", &DifferentialActionModelAbstract::calc, | ||
51 |
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20 | bp::args("self", "data", "x")) |
52 | .def<void (DifferentialActionModelNumDiff::*)( | ||
53 | const boost::shared_ptr<DifferentialActionDataAbstract>&, | ||
54 | const Eigen::Ref<const Eigen::VectorXd>&, | ||
55 |
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10 | const Eigen::Ref<const Eigen::VectorXd>&)>( |
56 | "calcDiff", &DifferentialActionModelNumDiff::calcDiff, | ||
57 |
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20 | bp::args("self", "data", "x", "u"), |
58 | "Compute the derivatives of the dynamics and cost functions.\n\n" | ||
59 | "It computes the Jacobian and Hessian using numerical " | ||
60 | "differentiation.\n" | ||
61 | "It assumes that calc has been run first.\n" | ||
62 | ":param data: NumDiff action data\n" | ||
63 | ":param x: state point (dim. state.nx)\n" | ||
64 | ":param u: control input (dim. nu)") | ||
65 | .def<void (DifferentialActionModelNumDiff::*)( | ||
66 | const boost::shared_ptr<DifferentialActionDataAbstract>&, | ||
67 |
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10 | const Eigen::Ref<const Eigen::VectorXd>&)>( |
68 | "calcDiff", &DifferentialActionModelAbstract::calcDiff, | ||
69 |
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20 | bp::args("self", "data", "x")) |
70 |
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20 | .def("createData", &DifferentialActionModelNumDiff::createData, |
71 |
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20 | bp::args("self"), |
72 | "Create the action data.\n\n" | ||
73 | "Each action model (AM) has its own data that needs to be " | ||
74 | "allocated.\n" | ||
75 | "This function returns the allocated data for a predefined AM.\n" | ||
76 | ":return AM data.") | ||
77 |
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10 | .add_property( |
78 | "model", | ||
79 |
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10 | bp::make_function(&DifferentialActionModelNumDiff::get_model, |
80 | 10 | bp::return_value_policy<bp::return_by_value>()), | |
81 | "action model") | ||
82 |
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10 | .add_property( |
83 | "disturbance", | ||
84 |
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20 | bp::make_function(&DifferentialActionModelNumDiff::get_disturbance), |
85 | &DifferentialActionModelNumDiff::set_disturbance, | ||
86 | "disturbance constant used in the numerical differentiation") | ||
87 |
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10 | .add_property("withGaussApprox", |
88 |
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20 | bp::make_function( |
89 | &DifferentialActionModelNumDiff::get_with_gauss_approx), | ||
90 | "Gauss approximation for computing the Hessians") | ||
91 |
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10 | .def(CopyableVisitor<DifferentialActionModelNumDiff>()); |
92 | |||
93 | bp::register_ptr_to_python< | ||
94 | 10 | boost::shared_ptr<DifferentialActionDataNumDiff> >(); | |
95 | |||
96 |
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10 | bp::class_<DifferentialActionDataNumDiff, |
97 | bp::bases<DifferentialActionDataAbstract> >( | ||
98 | "DifferentialActionDataNumDiff", | ||
99 | "Numerical differentiation diff-action data.", | ||
100 |
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10 | bp::init<DifferentialActionModelNumDiff*>( |
101 | 20 | bp::args("self", "model"), | |
102 | "Create numerical differentiation diff-action data.\n\n" | ||
103 | ":param model: numdiff diff-action model")) | ||
104 |
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10 | .add_property("Rx", |
105 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::Rx, |
106 | 10 | bp::return_internal_reference<>()), | |
107 | "Jacobian of the cost residual.") | ||
108 |
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10 | .add_property("Ru", |
109 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::Ru, |
110 | 10 | bp::return_internal_reference<>()), | |
111 | "Jacobian of the cost residual.") | ||
112 |
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10 | .add_property("dx", |
113 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::dx, |
114 | 10 | bp::return_internal_reference<>()), | |
115 | "state disturbance.") | ||
116 |
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10 | .add_property("du", |
117 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::du, |
118 | 10 | bp::return_internal_reference<>()), | |
119 | "control disturbance.") | ||
120 |
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10 | .add_property("xp", |
121 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::xp, |
122 | 10 | bp::return_internal_reference<>()), | |
123 | "rate state after disturbance.") | ||
124 |
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10 | .add_property( |
125 | "data_0", | ||
126 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::data_0, |
127 | 10 | bp::return_value_policy<bp::return_by_value>()), | |
128 | "data that contains the final results") | ||
129 |
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10 | .add_property( |
130 | "data_x", | ||
131 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::data_x, |
132 | 10 | bp::return_value_policy<bp::return_by_value>()), | |
133 | "temporary data associated with the state variation") | ||
134 |
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10 | .add_property( |
135 | "data_u", | ||
136 |
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10 | bp::make_getter(&DifferentialActionDataNumDiff::data_u, |
137 | 10 | bp::return_value_policy<bp::return_by_value>()), | |
138 | "temporary data associated with the control variation") | ||
139 |
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10 | .def(CopyableVisitor<DifferentialActionDataNumDiff>()); |
140 | 10 | } | |
141 | |||
142 | } // namespace python | ||
143 | } // namespace crocoddyl | ||
144 |