Region Identification

[KeithBallard]

Hi,

First, TetWild is a great tool! I was exploring its use for my research today and was very impressed. The issue I have is that the output simply contains tetrahedra without any attributes to deduce which tetrahedra should be part of which manifold. Perhaps this is outside the scope of the library, but I wanted to know if given an input triangle soup consisting form multiple manifolds, is there a way to know what manifold a tetrahedra lies in (nominally). In the library Triangle (https://www.cs.cmu.edu/~quake/triangle.html), the use of attributes allows something to this effect. I imagine that though TetWild does not necessarily keep the input triangles exactly (since that is kind of the point), it could assign attributes to each tetrahedra based the attributes of the input triangles that bound the region.

For example, imagine a triangle soup with three attributes such as:

TetWild creates a great tetrahedralization:

But there is no way of knowing (without heavy computation to inversely determine) which region each tetrahedron belongs to.

Do you see any way forward with this idea or would it be a dead end?

Thanks,
Keith Ballard

[KeithBallard]

See update on wildmeshing/fTetWild#26