kendama_catch_check — DRIVE kendama op

• Data kinds: table → table

• Call: import fullseye as fs; fs.ledger.kendama_catch_check(kp: 'dict', p_ball, v_ball, cup_center, cup_axis=(0.0, 0.0, 1.0), v_cup=(0.0, 0.0, 0.0), v_rel_max: 'float' = 1.0, window: 'float' = None) -> 'dict' (to call the implementation directly, import kendama; kendama.kendama_catch_check(kp: 'dict', p_ball, v_ball, cup_center, cup_axis=(0.0, 0.0, 1.0), v_cup=(0.0, 0.0, 0.0), v_rel_max: 'float' = 1.0, window: 'float' = None) -> 'dict'; from the registry, opsdrive.get("kendama_catch_check"))

Usage

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

玉(半径 r_b)が皿(縁の半径 r_c < r_b、縁の中心 cup_center、軸 cup_axis、速度 v_cup)に乗る幾何の判定。

縁に乗った玉の中心は縁の面から h_c = √(r_b² − r_c²) 上、静的な安定条件は横ずれ ≤ r_c。:func:ballistics.cup_catch_check

(皿 > 玉が前提)を有効な皿(半径 r_c + r_b、中心を軸方向に h_c 上げる)で呼ぶ → 横ずれ ≤ r_c、縁の面からの高さ

h_c ≤ h ≤ h_c + 1.5 r_b、皿に対する相対速さ ≤ v_rel_max。さらに 下から昇ってくる玉(相対速度の軸成分 > 0)は受けない

(皿は上からしか受けられない。支点 = 皿の中心の簡略化では昇る玉が皿の位置を通り抜けるため必要)。

`window を渡すと高さの窓を「縁に最初に触れる高さ」+ window 以下に狭める(着地の判定: :func:kendama_simulate` は

kp["catch_window"])。横ずれ δ の玉は √(r_b² − (r_c − δ)²)(δ = 0 で h_c)で縁に触れる —— 中心からずれた玉は縁の片側に

先に触れ、皿の中へ転がり込む(横ずれ ≤ r_c なら受けたとする)。

縁の半径は kp["cup_radius"] (受ける皿、無ければ大皿)。返り値 `{"caught", "lateral", "height" (縁の面から), "speed" (相対), "descending"}`。

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)

• (none yet)

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 (kendama)

kendama_params · elliptic_k_agm · pendulum_period_exact · pendulum_launch_speed · pendulum_rod_simulate · tether_tension_fixed · tether_slack_angle · swing_up_plan


*Provenance: kendama.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.