When defining the connectivity of layers in the dialog ( Tools -> Trace Net -> Layer Stack ) I'm missing a inversion operator. In a default case a stack of 'metal2', 'via2', 'metal3' creates a connection from one layer to another. However, for a special MIM capacitor option this connectivity of 'metal2' to 'metal3' via a 'via2' is blocked if a certain layer 'capm' is present.
With the current check on the *presence* of a via layer, I can't model it correctly, but if the *absence* of a certain layer can be defined as a via, it could be solved like:
Conductor1, Optional Via, Conductor2
metal2 , NOT(capm) , via2
capm , <none> , via2
via2 , <none> , metal3
My feature request is therefore the following: is is possible to add the absence of a layer as via?