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3D Mesh Reconstruction #579

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3D mesh reconstruction with naive exterior entity classification. This PR aims to address #554 and allows for the reconstruction of a proteus mesh into a SCOREC-readable mesh data structure. Exterior entities are classified as model entities for simplicity and material types are preserved during this reconstruction.

This is functional in both serial and parallel. The marin case was run as a test example in parallel up until T=1s for a moderate discretization (~30k elements). The following is an isovolume comparison at that time for a baseline case and one using the same mesh but one that is reconstructed and passed back into Proteus.
The isovolume is colored by node type to indicate the preservation of the node material types through reconstruction.
reconstruction_vs_noreconstruction

@zhang-alvin zhang-alvin closed this Aug 9, 2017
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Duplicated in #589 with comparison to the update_adapt branch as opposed to master branch.

@cekees cekees deleted the zhanga/scorec_reconstructMesh3D branch September 15, 2017 21:26
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