Pad Grid

A drum machine's bank of velocity pads: rows of rubber squares, labelled and lit from the state you pass in. Velocity comes from where in the pad the press landed — the top edge is a full-force hit, the bottom edge the softest one — so a tap is something a player can aim rather than a single fixed level. Choke groups are drawn as well as obeyed: pads that cut each other wear a tie mark, from the same membership function an engine uses to decide what to silence. Includes a first-class look for a pad that is deliberately silent. Layout, hit testing and the velocity law sit in a pure core beside it.