add binding to convert elastic parameters to Lamé's parameters

bindings/Modules/src/SofaPython3/SofaDeformable/Binding_LameParameters.cpp

@@ -0,0 +1,60 @@
+/******************************************************************************
+ *                              SofaPython3 plugin                             *
+ *                  (c) 2021 CNRS, University of Lille, INRIA                  *
+ *                                                                             *
+ * This program is free software; you can redistribute it and/or modify it     *
+ * under the terms of the GNU Lesser General Public License as published by    *
+ * the Free Software Foundation; either version 2.1 of the License, or (at     *
+ * your option) any later version.                                             *
+ *                                                                             *
+ * This program is distributed in the hope that it will be useful, but WITHOUT *
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       *
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
+ * for more details.                                                           *
+ *                                                                             *
+ * You should have received a copy of the GNU Lesser General Public License    *
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.        *
+ *******************************************************************************
+ * Contact information: contact@sofa-framework.org                             *
+ ******************************************************************************/
+
+#include <pybind11/pybind11.h>
+
+#include <SofaPython3/SofaDeformable/Binding_LameParameters.h>
+#include <sofa/component/solidmechanics/fem/elastic/impl/LameParameters.h>
+
+namespace sofapython3
+{
+
+void moduleAddLameParameters(pybind11::module &m)
+{
+    using namespace sofa::component::solidmechanics::fem::elastic;
+
+    m.def(
+        "toLameParameters2D",
+        [](SReal youngModulus, SReal poissonRatio) {
+            LameLambda<SReal> lambda{0};
+            LameMu<SReal> mu{0};
+            toLameParameters<2>(YoungModulus<SReal>(youngModulus),
+                                PoissonRatio<SReal>(poissonRatio), lambda, mu);
+            return std::make_pair(mu.get(), lambda.get());
+        },
+        pybind11::arg("youngModulus"), pybind11::arg("poissonRatio"),
+        "Converts Young's modulus and Poisson's ratio to Lamé parameters (mu, "
+        "lambda) for 2D.");
+
+    m.def(
+        "toLameParameters3D",
+        [](SReal youngModulus, SReal poissonRatio) {
+            LameLambda<SReal> lambda{0};
+            LameMu<SReal> mu{0};
+            toLameParameters<3>(YoungModulus<SReal>(youngModulus),
+                                PoissonRatio<SReal>(poissonRatio), lambda, mu);
+            return std::make_pair(mu.get(), lambda.get());
+        },
+        pybind11::arg("youngModulus"), pybind11::arg("poissonRatio"),
+        "Converts Young's modulus and Poisson's ratio to Lamé parameters (mu, "
+        "lambda) for 3D.");
+}
+
+} // namespace sofapython3

bindings/Modules/src/SofaPython3/SofaDeformable/Binding_LameParameters.h

@@ -0,0 +1,30 @@
+/******************************************************************************
+*                 SOFA, Simulation Open-Framework Architecture                *
+*                    (c) 2021 INRIA, USTL, UJF, CNRS, MGH                     *
+*                                                                             *
+* This program is free software; you can redistribute it and/or modify it     *
+* under the terms of the GNU Lesser General Public License as published by    *
+* the Free Software Foundation; either version 2.1 of the License, or (at     *
+* your option) any later version.                                             *
+*                                                                             *
+* This program is distributed in the hope that it will be useful, but WITHOUT *
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or       *
+* FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License *
+* for more details.                                                           *
+*                                                                             *
+* You should have received a copy of the GNU Lesser General Public License    *
+* along with this program. If not, see <http://www.gnu.org/licenses/>.        *
+*******************************************************************************
+* Contact information: contact@sofa-framework.org                             *
+******************************************************************************/
+
+#pragma once
+
+#include <pybind11/pybind11.h>
+
+namespace sofapython3
+{
+
+void moduleAddLameParameters(pybind11::module& m);
+
+} // namespace sofapython3

bindings/Modules/src/SofaPython3/SofaDeformable/CMakeLists.txt

@@ -1,12 +1,14 @@
 project(Bindings.Modules.SofaDeformable)
 
 set(SOURCE_FILES
-    ${CMAKE_CURRENT_SOURCE_DIR}/Module_SofaDeformable.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/Binding_LameParameters.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/Binding_LinearSpring.cpp
     ${CMAKE_CURRENT_SOURCE_DIR}/Binding_SpringForceField.cpp
+    ${CMAKE_CURRENT_SOURCE_DIR}/Module_SofaDeformable.cpp
 )
 
 set(HEADER_FILES
+    ${CMAKE_CURRENT_SOURCE_DIR}/Binding_LameParameters.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Binding_LinearSpring.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Binding_LinearSpring_doc.h
     ${CMAKE_CURRENT_SOURCE_DIR}/Binding_SpringForceField.h
@@ -18,6 +20,7 @@ if (NOT TARGET SofaPython3::Plugin)
 endif()
 
 sofa_find_package(Sofa.Component.SolidMechanics.Spring REQUIRED)
+sofa_find_package(Sofa.Component.SolidMechanics.FEM.Elastic REQUIRED)
 
 SP3_add_python_module(
     TARGET       ${PROJECT_NAME}
@@ -26,6 +29,6 @@ SP3_add_python_module(
     DESTINATION  Sofa
     SOURCES      ${SOURCE_FILES}
     HEADERS      ${HEADER_FILES}
-    DEPENDS      Sofa.Component.SolidMechanics.Spring SofaPython3::Plugin SofaPython3::Bindings.Sofa.Core
+    DEPENDS      Sofa.Component.SolidMechanics.Spring Sofa.Component.SolidMechanics.FEM.Elastic SofaPython3::Plugin SofaPython3::Bindings.Sofa.Core
 
 )

bindings/Modules/src/SofaPython3/SofaDeformable/Module_SofaDeformable.cpp

@@ -21,6 +21,7 @@
 #include <pybind11/pybind11.h>
 #include <SofaPython3/SofaDeformable/Binding_LinearSpring.h>
 #include <SofaPython3/SofaDeformable/Binding_SpringForceField.h>
+#include <SofaPython3/SofaDeformable/Binding_LameParameters.h>
 
 
 namespace py { using namespace pybind11; }
@@ -34,6 +35,7 @@ PYBIND11_MODULE(SofaDeformable, m)
 
     moduleAddLinearSpring(m);
     moduleAddSpringForceField(m);
+    moduleAddLameParameters(m);
 }
 
 } // namespace sofapython3