AlgoHex is a hex-meshing algorithm that can leverage the CELL_DATA section of VTK files for feature-aware meshing.
A typical input dataset is HexMe, which uses a Gmsh Python script to generate such VTK files.
In order to explore this representation and to develop feature-aware meshing algorithms, I wanted to convert CAD-related data to Geogram attributes.
- expects a tetrahedral mesh
- writes 4 files, maybe it's possible to bundle everything in a single file
- you have to import the 4 files into Graphite, switch the painting mode into "ATTRIBUTE". A Lua script could do the job for you
- export all mesh components (points, lines, triangles, tetrahedral) even if they don't have CAD features associated
- a C++ 17 compiler
- CMake
- UltiMaille (included as submodule)
- Graphite or Vorpaview, to visualize the output
.geogramfiles
mkdir build
cd build
cmake ..
make./vtk2geogram ../data/S0.vtkwill create 4 files:
../data/S0.vtk.point_set.geogram../data/S0.vtk.polyline.geogram../data/S0.vtk.triangles.geogram../data/S0.vtk.tetrahedra.geogram
that you can open with Graphite.