mesh sizing function

[gbettega]

Hello
thanks again for making fTetWild available. I have a question abuot the mesh sizing function,
which as we know from the documentation, and from the examples, should be defined
through a background mesh in .msh format.
Let consider the solid in Fig. 1, and suppose that you would like to apply a sizing
on the triangles laying on the two faces F1 and F2: the two sizing values f1 and f2
could in general be different.

Fig. 1.

Now consider the two following steps:

STEP 1: extract F1 from the solid and enclose it in a bounding box; then generate
a very simple, cartesian mesh of the bounding box. The corresponding .msh mesh
file used for sizing will contain at each node the value f1. See Fig. 2

Fig. 2

STEP2: the same for F2. See Fig. 3

Fig. 3

STEP 3: "merge" the two .msh grids into one, with the "overlapping" result in Fig. 4: the union of the two grids is obvioulsy not well defined as single finite element mesh

Fig. 4

Now the question; will this work?
Thank you and regards
Giovanni