What is that add node doing really? It does not seem to require adding side to the top. The same effect is produced by adding any constant value (greater than zero) to the top value. In fact, I can change the add node to a constant value node with constant 1 (or .0001, or 1000) to produce the same result. So...yeah. How is that "top node" working really?
HI Anssi aanssikuh ,
The Selection and Top and Side are Boolean Sockets. A Value of 0 (or less) corresponds to False and everything else (positive, non-zero numbers) corresponds to True. Practically, False is 0 and True is 1.
So, by Adding Top and Side, if either is True, you get a positive result (1 + 0 = 1, so True). If both are False, the result is zero (0 + 0 + 0, so False).
Adding a constant positive value to the Top Socket, results in an always True, so then you are back to creating overlapping Faces.
You could also have used a Boolean Or Node, instead of an Add Node and there are many more other ways, you could use here, but your method is definitely wrong 😉.