Gsoc2024 hexahedral mesh generation tbenard #8445
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Working example for 1/2 template substitution
* Detection of "sandwiched" volumes (that share only a edge with the plane) * Related: Traversal takes into account problematic 1/2 templates faces * Repair impossible markings (wip)
* 3 templates outside of iteration plane are not refined * Issue: I think 3 templates should be allowed outside of the plane, since we check for 3 templates validity only inside the plane * Solution: Either a propagation issue ( keep older 1/2 templates propageable ) or else its a non issue and properly detect the 3 templates outside the plane.
* WIP Expansion of initial identified set, for additional level of refinement * WIP Creation of new iteration plane for the next level. => Uses Union_find, to create connected components, for the algorithm to avoid iterating outside of the current level context ( Local rebase of 5 commits )
Force-push/edited to fix issues, WIP
Numbers vertices to biject ghosts cells between two threads. First iteration works
fix_dart_storage for ghost cells volumes
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Summary of Changes
Implementation of the method used in the paper "A template-based approach for parallel hexahedral two-refinement", Steven J. Owen, Ryan M. Shih, Corey D. Ernst (2015, 2017);
Adds two functions to compute the hexahedral two-refinement of a mesh under the Linear Cell Complex package, respectively a single-threaded and multi-threaded version of the algorithm.
Additionnal information on the project public gist here
We asked ourselves with gdamiand if this this going to be a package or a part of the LCC package. I think the algorithm has no real purpose to have its own package. Currently it is written as an example under the LCC package, we might move it in the end into the include folder of the package.
TODO