This plugin can be used as a simple demonstration of how SOFA "force fields" components are built up. In this case, the force field API will provide the internal potential energy, residual and jacobian of a Saint-Venant-Kirchhoff material assembled on linear tetrahedral meshes. These three function will be used by the system assembler and ODE solvers of SOFA.
user@host:~$ sudo apt install qtbase5-dev libqt5charts5-dev libqt5opengl5-dev libopengl0 libeigen3-dev libglew-dev zlib1g-dev libboost-dev libboost-filesystem-dev g++ cmake git
user@host:~$ export SOFA_SRC=/opt/sofa_src
user@host:~$ export SOFA_ROOT=/opt/sofa
user@host:~$ git clone https://github.com/sofa-framework/sofa.git $SOFA_SRC
user@host:~$ cmake -DCMAKE_INSTALL_PREFIX=$SOFA_ROOT -DCMAKE_BUILD_TYPE=Release -S $SOFA_SRC -B $SOFA_SRC/build
user@host:~$ cmake --build $SOFA_SRC/build -j4
user@host:~$ cmake --install $SOFA_SRC/builduser@host:~$ export SSFF_SRC=/opt/SofaSimpleForceField_src
user@host:~$ git clone https://github.com/jnbrunet/SofaSimpleForcefield.git $SSFF_SRC
user@host:~$ cmake -DCMAKE_PREFIX_PATH=$SOFA_ROOT/lib/cmake -DCMAKE_INSTALL_PREFIX=$SOFA_ROOT/plugins/SofaSimpleForceField -DCMAKE_BUILD_TYPE=Release -S $SSFF_SRC -B $SSFF_SRC/build
user@host:~$ cmake --build $SSFF_SRC/build -j4
user@host:~$ cmake --install $SSFF_SRC/builduser@host:~$ $SOFA_ROOT/bin/runSofa -l SofaSimpleForceField $SSFF_SRC/cantilever_beam.scn
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