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Iulian Grindeanu authored
points are needed, for Newton-Raphson iteration. The iteration finds a parameter u at which the current edge size is close to the target (variable) mesh size at that point. So, expose the tangent for smooth edges. git-svn-id: https://svn.mcs.anl.gov/repos/ITAPS/MOAB/trunk@5039 6162379e-bd28-0410-9a7d-b7f4dcfcad3c
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