bounce — DRIVE ball op

• Data kinds: table × table → table

• Call: import fullseye as fs; fs.ledger.bounce(v, omega, normal, bp: 'dict', ip: 'dict') -> 'dict' (to call the implementation directly, import ballistics; ballistics.bounce(v, omega, normal, bp: 'dict', ip: 'dict') -> 'dict'; from the registry, opsdrive.get("bounce"))

Usage

> This operator's description has not been translated yet. The original text follows as it is.

剛体球が平面に当たる瞬間の速度・角速度の更新(クーロン摩擦、Cross 2002 / Garwin 1969 の 2 領域)。

接触点の滑り速度 s = v_t − r(ω × n)_t。必要な接線力積が μJ_n 以下なら滑りが止まって転がりに移る(grip)、

超えるなら滑ったまま(slip、接線力積 = μJ_n)。法線は v_n' = −e v_n(e は定数か |v_n| の関数)。返り値

`{"v", "omega", "regime" ("grip"|"slip"|"none"), "J_n", "J_t", "slip_speed", "e"}`。

`v·n ≥ 0(離れていく)なら何もしない(regime "none")。定理: 接触点まわりの角運動量は保存(:func:contact_angular_momentum`)。

References (sample data, literature)

• Sample-data catalog (download URLs / licences) — 2-D uses skimage.data (BSD/public domain) plus synthetic images; 3-D lists download URLs for real data sources (Stanford, PDS, …).

• Operator provenance and references — the sources of the research/methods this op family came from.

• The canonical algorithm (author, year) and its uses are named in the family usage guide above.

Runnable examples (verified samples that actually call this op)

• poc_ball_bounce — py -3.11 examples/poc_ball_bounce.py

• poc_table_tennis_bounce — py -3.11 examples/poc_table_tennis_bounce.py

Ops the type connects to (they accept table as input)

course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same

Same category (ball)

ball_params · impact_params · flight_vacuum · flight_ode · flight_simulate · flight_state_at · magnus_lift_coefficient · drag_coefficient_sphere


*Provenance: ballistics.py — DRIVE operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

© 2026 Kazufumi Furuse — Fullseye operator documentation. Licensed under Apache-2.0.