search

SCIInstitute / Cleaver

A MultiMaterial Tetrahedral Meshing Library and Application
https://cleaver.readthedocs.io
Other
40 stars 18 forks source link

Avoid the need to snap triple/quad points back into tet #39

Closed brigb123 closed 7 years ago

brigb123 commented 8 years ago

The scenario is that when the triple or quadruple point is estimated (solving a linear equation) for a tet, it is sometimes outside the tet, requiring a step "snap" to put the point back into the tet. The hypothesis is that sometimes the wrong edge/face is selected to snap back to, creating a flat tet. If the estimated triple or quadruple could be guaranteed to not be outside the element, the snap step can be skipped and the created flat tets would no longer exist.

jonbronson commented 7 years ago

Unfortunately the mathematics of the 4 point material interpolation allow for these points to exist outside of the tet. Resolving them is a step we have to take.