Thursday, June 28, 2018

HexaLab.net: a new online tool for visualization and evaluation of hexahedral mesh


We are proud to present HexaLab.net our new free online tool for inspecting hex meshes.


HexaLab is a WebGL online tool for real time visualization, exploration and assessment of hexahedral meshes that runs directly in your web browser. This visualization tool targets both users and scholars who employ hexmeshes for Finite Element Analysis, can readily check mesh quality and assess its usability for simulations. You can use HexaLab to perform a detailed analysis of the mesh structure, isolating weak points and generate high quality images. 
To this end, we support a wide variety of visualization and volume inspection tools. The system also offers immediate access to a repository containing all the publicly available meshes produced with the most recent techniques for hex mesh generation. 
The system supports hexahedral models in the popular .mesh and .vtk ASCII formats. 
So follow the link and just drop a mesh on that page, and, please, note that meshes are NOT uploaded anywhere. No 3D data will leave your browser and everything will stay local. 

Beside classical slicing (pictured above) in HexaLab there are many visualization techniques are available like for example we have a minecraft-like interactive digging and undigging of individual cells, that allows to pick exactly what cell you want to hide/reveal.


Or you can reveal the interior by a interactive peeling that progressively hides the cells from the external boundaries:




Or you can interactively hide the good shaped cells to reveal only where the bad ones are. Quality of the meshing can be measured using a variety of measures (indeed all the well known Verdict measures, like Scaled Jacobian, distortion, edge ratio, volume, etc.):




Finally remember that it is free to use, but it is always kind to cite its use by referring the companion paper:

"HexaLab.net: an online viewer for hexahedral meshes"
Matteo Bracci, Marco Tarini, Nico Pietroni, Marco Livesu, Paolo Cignoni
(PDF freely available on arxiv)



1 comment:

Unknown said...

Wow, looks really cool.
Would it be usable to analyze CFD meshes build using snappyHexMesh (the OpenFOAM meshing tool)?
Congrats,
lele