What the Epsilon value do in the fTetWild tetrahedralizer

[PhysicalTesting]

I've mostly used fTetWild as it works really nice for non manifold meshes with varying density so that's the documentation I refer to here. Link to documentation: https://wildmeshing.github.io/ftetwild/

I found in the documentation of fTetWild, that adjusting the 'Envelope of size epsilon' which is called 'Epsilon' in the ZOZO addon with the value of 0.001000, either increase or decrease the overall mesh resolution.

Increasing the value reduces the resolution of the physics mesh. The Epsilon value is 0.600000

Decreasing the value makes the physics mesh much more detailed. The Epsilon value is 0.000500

It also prevents areas of the same mesh that is close together, from merging during the tetrahedralization process. Based on what I've tried, halving the value of Epsilon to 0.000500 makes it practically possible to have a mesh touch itself and the tetrahedralizer would not merge the surfaces.

[ryichando]

Thank you for sharing your experiences! All what's posted here makes sense.

[PhysicalTesting]

It's my pleasure and thanks for checking it out! I was excited to see if what texted made sense, I'm glad it did. 😄