Zero volume tetras

[Vilo176]

Hi dear friends,

First of all I'm not sure at all that this git is intended for "issues", "remarks", and all that stuff. Maybe it's just a way to share, but you don't want to spend time dealing with users like me ... Please let me know.

By the way, I have one question concerning resulting tetrahedralization. I see (thanks to GMSH filters) that there are a huge number of very low volume tetrahedrons. These tetras have a gamma (= inside sphere / outside sphere) that is less than 1E-9.

Questions :

• Are these tetras an intended result ?
• Are there possibilities inside your code to avoid these pathological tetras ?

Thanks again.

[MarcoAttene]

Hello, please feel free to ask. Though we cannot commit to a continuous code maintenance, if issues are harmonized with our plans and priorities we will be happy to work on them. Regarding your question: our tool was not designed to provide quality tetrahedral meshing, therefore it is perfectly normal that near-degenerate cells are present in the subdivision. We guarantee that our algorithm produces a valid space partition according to the input triangles. Near-degenerate cells may appear due to the specific configuration of input triangles, and sometimes cannot be avoided (i.e. the input forces them to be there). Some other times a more clever algorithm might reduce their number, but I'm afraid it would be rather difficult to adapt the current implementation for that. Hope it helps.

Marco

http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail Mail priva di virus. www.avg.com http://www.avg.com/email-signature?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2>

Il giorno mer 22 dic 2021 alle ore 12:22 Vilo176 @.***> ha scritto:

Hi dear friends,

First of all I'm not sure at all that this git is intended for "issues", "remarks", and all that stuff. Maybe it's just a way to share, but you don't want to spend time dealing with users like me ... Please let me know.

By the way, I have one question concerning resulting tetrahedralization. I see (thanks to GMSH filters) that there are a huge number of very low volume tetrahedrons. These tetras have a gamma (= inside sphere / outside sphere) that is less than 1E-9.

Questions :

• Are these tetras an intended result ?
• Are there possibilities inside your code to avoid these pathological tetras ?

Thanks again.

— Reply to this email directly, view it on GitHub https://github.com/MarcoAttene/VolumeMesher/issues/2, or unsubscribe https://github.com/notifications/unsubscribe-auth/AED5QTPGECXICPONOFVBHJ3USGYHRANCNFSM5KSKMG7A . Triage notifications on the go with GitHub Mobile for iOS https://apps.apple.com/app/apple-store/id1477376905?ct=notification-email&mt=8&pt=524675 or Android https://play.google.com/store/apps/details?id=com.github.android&referrer=utm_campaign%3Dnotification-email%26utm_medium%3Demail%26utm_source%3Dgithub.

You are receiving this because you are subscribed to this thread.Message ID: @.***>

[Vilo176]

Thanks Marco.