├── .gitignore ├── .gitmodules ├── CMakeLists.txt ├── README.md ├── apps ├── convergence.cpp ├── polyscope_app.h ├── sim2d.cpp └── sim3d.cpp ├── cmake ├── FindCHOLMOD.cmake ├── FindSuiteSparse.cmake ├── check_arm_neon.cpp └── check_isa.cpp ├── imgs └── teaser.jpg ├── models ├── mesh │ ├── armadillo.mesh │ ├── astronaut.mesh │ ├── bar.mesh │ ├── beam.mesh │ ├── beam │ │ ├── beam_bone.m │ │ ├── beam_bone_T.dmat │ │ ├── beam_bone_V.dmat │ │ ├── bone_tets.dmat │ │ └── muscle_tets.dmat │ ├── beam_20k.mesh │ ├── beam_5k.mesh │ ├── boat.mesh │ ├── bunny.mesh │ ├── coarse_bunny.mesh │ ├── coarser_bunny.mesh │ ├── corona_lo.mesh │ ├── cube.mesh │ ├── cube2.mesh │ ├── cube_8.mesh │ ├── gecko.mesh │ ├── gummy_bear │ │ ├── gummy_bear.mesh │ │ ├── gummy_bear.mesh__sf.obj │ │ ├── gummy_bear.obj │ │ ├── gummy_bear_material_ids.dmat │ │ ├── sim_v_0013.dmat │ │ └── sim_x0_0013.dmat │ ├── mask.mesh │ ├── octopus-high.mesh │ ├── octopus.mesh │ ├── octopuslowdef.mesh │ ├── spot.mesh │ ├── tet.mesh │ └── two_tets.mesh └── obj │ ├── T_xy.obj │ ├── Y_xy.obj │ ├── armadillo.obj │ ├── armadillo_low.obj │ ├── astronaut.obj │ ├── boat.mesh__sf.obj │ ├── box_wide_145_thin_xy.obj │ ├── box_wide_145_xy.obj │ ├── box_wide_xy.obj │ ├── box_xy.obj │ ├── bunny_skin.obj │ ├── cylinder_1k.obj │ ├── cylinder_5k.obj │ ├── gecko.obj │ ├── spot_triangulated.obj │ ├── square_xy_145.obj │ ├── square_xz.obj │ ├── square_xz_16k.obj │ ├── square_xz_2k.obj │ ├── square_yz_16k.obj │ ├── square_yz_500.obj │ ├── tri_wide_xy.obj │ ├── tri_xy.obj │ ├── triangle_xz.obj │ └── triangle_yz.obj ├── output ├── .gitignore ├── mesh │ └── .gitignore └── obj │ └── .gitignore ├── scenes ├── 2D │ ├── boundary_conditions.json │ └── square.json ├── 3D │ ├── beam_stretch.json │ ├── beam_twist.json │ ├── boat.json │ ├── bunny.json │ ├── bunny_coarse.json │ ├── gummy_bear.json │ └── gummy_bear_deformed.json └── data │ ├── boat_v_0009.dmat │ ├── boat_x_0009.dmat │ ├── bunny_v_0002.dmat │ ├── bunny_v_0027.dmat │ ├── bunny_v_0031.dmat │ ├── bunny_x_0002.dmat │ ├── bunny_x_0027.dmat │ └── bunny_x_0031.dmat ├── scripts ├── dFdx.m ├── derivs.m ├── mesh_distance.m ├── mmread.m ├── plot_convergence.m ├── plot_data.m ├── segment_mesh.m └── writeDMAT.m ├── src ├── boundary_conditions │ ├── bend_boundary_condition.h │ ├── boundary_condition.cpp │ ├── boundary_condition.h │ ├── fixed_boundary_conditions.h │ ├── stretch_boundary_condition.h │ └── twist_boundary_condition.h ├── config.cpp ├── config.h ├── energies │ ├── README.md │ ├── arap.cpp │ ├── arap.h │ ├── corotational.cpp │ ├── corotational.h │ ├── fixed_corotational.cpp │ ├── fixed_corotational.h │ ├── fung.cpp │ ├── fung.h │ ├── material_model.cpp │ ├── material_model.h │ ├── neohookean.cpp │ ├── neohookean.h │ ├── stable_neohookean.cpp │ └── stable_neohookean.h ├── factories │ ├── boundary_condition_factory.cpp │ ├── boundary_condition_factory.h │ ├── factory.h │ ├── integrator_factory.cpp │ ├── integrator_factory.h │ ├── linear_solver_factory.cpp │ ├── linear_solver_factory.h │ ├── material_model_factory.cpp │ ├── material_model_factory.h │ ├── optimizer_factory.cpp │ ├── optimizer_factory.h │ ├── variable_factory.cpp │ └── variable_factory.h ├── linear_solvers │ ├── block_matrix.h │ ├── eigen_iterative_solver.h │ ├── eigen_solver.h │ ├── linear_solver.h │ ├── linear_system.h │ ├── pcg.cpp │ ├── pcg.h │ ├── preconditioners.h │ └── subspace_matrix.h ├── linesearch.h ├── mesh │ ├── mesh.cpp │ ├── mesh.h │ ├── meshes.cpp │ ├── meshes.h │ ├── tet_mesh.cpp │ ├── tet_mesh.h │ ├── tri2d_mesh.cpp │ └── tri2d_mesh.h ├── optimizers │ ├── README.md │ ├── newton_optimizer.cpp │ ├── newton_optimizer.h │ ├── optimizer.cpp │ ├── optimizer.h │ ├── optimizer_data.cpp │ └── optimizer_data.h ├── simulation_state.cpp ├── simulation_state.h ├── svd │ ├── Singular_Value_Decomposition_Givens_QR_Factorization_Kernel.hpp │ ├── Singular_Value_Decomposition_Jacobi_Conjugation_Kernel.hpp │ ├── Singular_Value_Decomposition_Kernel_Declarations.hpp │ ├── 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