How would I go around making this joint parametric?

[Joseph_Oster]

Parametric Japanese Timber Joinery for post and beam construction

This cobbles together some bits used previously to explore the scarf joint. Rather simple until you get into its variants. Scarf Joint With A Wedge has two wrinkles: 1) the scarf surfaces interlock, requiring two levels on each block and 2) the wedge (or pair of wedges). The best example I found was this one: Undersquinted wedged scarf joint [joinery_2019Oct13b2] Complicated! So I looked at an easier one: Post or Rafter Scarf Joint [joinery_2019Oct13b] joinery_2019Oct13b.gh (45.4 …