contact_angular_momentum — DRIVE ball op

• Data kinds: table → signal

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

Usage

Angular momentum about the contact point L_c = I ω + m (p − p_c) × v = I ω + m r (n × v). Invariant across the bounce (theorem).

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

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

flight_vacuum · magnus_lift_coefficient · drag_coefficient_sphere · restitution_from_apexes · restitution_from_intervals · fit_parabola · flight_fit · fit_aero

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.