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[Diffusion] Introduce generic diffusion #6431

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[Diffusion] Introduce generic diffusion #6431

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b233094
add template parameter to differentiate spatial domain and the quanti…
alxbilger Oct 28, 2026
aaa0f3a
introduce generic diffusion force field
alxbilger Oct 28, 2026
14e431f
add example
alxbilger Oct 28, 2026
f968c51
fix CUDA
alxbilger Nov 5, 2026
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2 changes: 1 addition & 1 deletion Sofa/Component/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -15,10 +15,10 @@ sofa_add_subdirectory_modules(SOFACOMPONENT_TARGETS
LinearSolver
Mass
ODESolver
Diffusion
Mapping
StateContainer
SolidMechanics
Diffusion
Constraint
AnimationLoop
MechanicalLoad
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7 changes: 5 additions & 2 deletions Sofa/Component/Diffusion/CMakeLists.txt
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Expand Up @@ -6,19 +6,22 @@ set(SOFACOMPONENTDIFFUSION_SOURCE_DIR "src/sofa/component/diffusion")
set(HEADER_FILES
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/config.h.in
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/init.h
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/DiffusionFEMForceField.h
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/DiffusionFEMForceField.inl
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/TetrahedronDiffusionFEMForceField.h
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/TetrahedronDiffusionFEMForceField.inl
)

set(SOURCE_FILES
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/init.cpp
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/DiffusionFEMForceField.cpp
${SOFACOMPONENTDIFFUSION_SOURCE_DIR}/TetrahedronDiffusionFEMForceField.cpp
)

sofa_find_package(Sofa.Simulation.Core REQUIRED)
sofa_find_package(Sofa.Component.SolidMechanics.FEM.Elastic REQUIRED)

add_library(${PROJECT_NAME} SHARED ${HEADER_FILES} ${SOURCE_FILES})
target_link_libraries(${PROJECT_NAME} PUBLIC Sofa.Simulation.Core)
target_link_libraries(${PROJECT_NAME} PUBLIC Sofa.Component.SolidMechanics.FEM.Elastic)

sofa_create_package_with_targets(
PACKAGE_NAME ${PROJECT_NAME}
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128 changes: 128 additions & 0 deletions Sofa/Component/Diffusion/src/sofa/component/diffusion/DiffusionFEMForceField.cpp
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@@ -0,0 +1,128 @@
/******************************************************************************
* SOFA, Simulation Open-Framework Architecture *
* (c) 2006 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/>. *
*******************************************************************************
* Authors: The SOFA Team and external contributors (see Authors.txt) *
* *
* Contact information: contact@sofa-framework.org *
******************************************************************************/
#define SOFA_COMPONENT_DIFFUSION_DIFFUSION_FEM_FORCE_FIELD_CPP

#include <sofa/component/diffusion/DiffusionFEMForceField.inl>

#include <sofa/core/ObjectFactory.h>
#include <sofa/fem/FiniteElement[all].h>

namespace sofa::component::diffusion
{

using sofa::defaulttype::Vec1Types;
using sofa::defaulttype::Vec2Types;
using sofa::defaulttype::Vec3Types;
using sofa::geometry::Edge;
using sofa::geometry::Triangle;
using sofa::geometry::Quad;
using sofa::geometry::Tetrahedron;
using sofa::geometry::Hexahedron;
using sofa::geometry::Prism;
using sofa::geometry::Pyramid;

void registerDiffusionFEMForceField(sofa::core::ObjectFactory* factory)
{
factory->registerObjects(sofa::core::ObjectRegistrationData("Generic isotropic FEM diffusion force field")
.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec1Types, Edge> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec1Types, Edge> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec1Types, Edge> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec2Types, Edge> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec2Types, Edge> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec2Types, Edge> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec3Types, Edge> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec3Types, Edge> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec3Types, Edge> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec2Types, Triangle> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec2Types, Triangle> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec2Types, Triangle> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec3Types, Triangle> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec3Types, Triangle> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec3Types, Triangle> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec2Types, Quad> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec2Types, Quad> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec2Types, Quad> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec3Types, Quad> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec3Types, Quad> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec3Types, Quad> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec3Types, Tetrahedron> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec3Types, Tetrahedron> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec3Types, Tetrahedron> >()

.add< DiffusionFEMForceField<sofa::defaulttype::Vec1Types, sofa::defaulttype::Vec3Types, Hexahedron> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec2Types, sofa::defaulttype::Vec3Types, Hexahedron> >()
.add< DiffusionFEMForceField<sofa::defaulttype::Vec3Types, sofa::defaulttype::Vec3Types, Hexahedron> >()
);
}

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec1Types, Edge>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec1Types, Edge>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec1Types, Edge>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec2Types, Edge>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec2Types, Edge>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec2Types, Edge>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec3Types, Edge>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec3Types, Edge>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec3Types, Edge>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec2Types, Triangle>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec2Types, Triangle>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec2Types, Triangle>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec3Types, Triangle>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec3Types, Triangle>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec3Types, Triangle>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec2Types, Quad>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec2Types, Quad>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec2Types, Quad>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec3Types, Quad>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec3Types, Quad>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec3Types, Quad>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec3Types, Tetrahedron>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec3Types, Tetrahedron>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec3Types, Tetrahedron>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec3Types, Hexahedron>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec3Types, Hexahedron>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec3Types, Hexahedron>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec3Types, Prism>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec3Types, Prism>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec3Types, Prism>;

template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec1Types, Vec3Types, Pyramid>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec2Types, Vec3Types, Pyramid>;
template class SOFA_COMPONENT_DIFFUSION_API DiffusionFEMForceField<Vec3Types, Vec3Types, Pyramid>;

} // namespace sofa::component::diffusion
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