numeral-roller

Purpose

Replace digit display where each digit "wipes" in vertically as if printed on a rotating drum. The previous digit's bottom edge briefly visible at the top of the frame, then the new digit fully shown, then the next digit's top edge starts peeking at the bottom.

Distinct from count-up — that's smooth value interpolation; this is discrete digit-by-digit slot-machine swap.

Params

{
  "digits_sequence": [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
  "per_digit_hold_frames": 20,
  "per_digit_wipe_frames": 4,            // 3-5 = sweet spot
  "wipe_direction": "bottom-to-top",     // bottom-to-top (most common) | top-to-bottom