├── .gitignore ├── .gitmodules ├── CMakeLists.txt ├── FixedSizeDeque.hh ├── IndexUtils.hh ├── LICENSE ├── LagrangePolynomial.hh ├── LayerByLayer.hh ├── MethodOfMovingAsymptotes.hh ├── MultigridSolver.hh ├── NDVector.hh ├── OptimalityCriterion.hh ├── ParallelVectorOps.hh ├── README.md ├── TPSStencils.hh ├── TemplateHelpers.hh ├── TensorProductBasisPolynomial.hh ├── TensorProductPolynomialInterpolant.hh ├── TensorProductQuadrature.cc ├── TensorProductQuadrature.hh ├── TensorProductSimulator.hh ├── TopologyOptimizationConstraint.hh ├── TopologyOptimizationFilter.hh ├── TopologyOptimizationObjective.hh ├── TopologyOptimizationProblem.hh ├── VoxelFEMBenchmark.hh ├── examples ├── bcs │ ├── 3D │ │ ├── cantilever_flexion_E.bc │ │ ├── cantilever_flexion_NE.bc │ │ ├── cantilever_flexion_SE.bc │ │ ├── cantilever_traction_E.bc │ │ ├── cantilever_uniform.bc │ │ ├── gripper.bc │ │ ├── gripper_arm.bc │ │ ├── hump.bc │ │ ├── mbb_N.bc │ │ ├── mbb_mid.bc │ │ └── mbb_uniform.bc │ ├── cantilever_flexion_E.bc │ ├── cantilever_flexion_SE.bc │ ├── cantilever_traction_E.bc │ ├── cantilever_uniform.bc │ ├── gripper_arm.bc │ ├── hump.bc │ ├── hump_downdownup.bc │ ├── hump_upupup.bc │ ├── mbb_N.bc │ ├── mbb_NW.bc │ ├── mbb_mid.bc │ ├── mbb_uniform.bc │ └── upsidedown.bc ├── densities │ ├── E10nu0.0.msh │ ├── E12nu-0.6.msh │ ├── E15nu0.7.msh │ ├── E3nu0.9.msh │ ├── E4nu-0.5.msh │ └── rasterized_3d_structure.msh └── materials │ └── B9Creator.material ├── python ├── 2DLayerByLayerDemo.ipynb ├── 2DTopoptDemo.ipynb ├── 3DLayerByLayerDemo.ipynb ├── 3DTopoptDemo.ipynb ├── CoarseningLevelBenchmark.py ├── LayerByLayerObjective.py ├── LayerByLayerOptimization.py ├── density_tools.py ├── helpers │ ├── bcViewer.py │ ├── debug_helpers.py │ ├── history_helpers.py │ ├── ipopt_helpers.py │ ├── multiscale_helpers.py │ ├── visualization.py │ ├── visulization.tex │ └── write_benchmark.py ├── symmetry_utils.py └── visualization.py └── python_bindings ├── CMakeLists.txt ├── Optimizer.cc └── 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