scoop op• Data kinds: scalar × scalar × scalar × scalar → table
• Call: import fullseye as fs; fs.ledger.tilt_wedge_retained(theta_deg: 'float', phi_deg: 'float', L: 'float', h0: 'float') -> 'dict' (to call the implementation directly, import scoop; scoop.tilt_wedge_retained(theta_deg: 'float', phi_deg: 'float', L: 'float', h0: 'float') -> 'dict'; from the registry, opsdrive.get("tilt_wedge_retained"))
Amount retained when powder heaped flat to depth h0 in a container with no wall at the mouth (floor length L, back wall perpendicular to the floor and tall enough) is tilted by θ with the mouth lowered (2-D cross-section, quasi-static, own derivation).
> The detailed description below is the original text — the summary and the headings are translated.
口の前面は初めから安息角 φ の斜面(口に壁が無いので垂直の崖は立たない)。傾けると口を通る斜面は水平から φ を保ち、床から見ると φ − θ。奥の平らな面は床に平行のまま(θ < φ で安定)。保持断面 A(θ) = ∫₀ᴸ min(h₀, x tan(φ − θ)) dx、出た割合 F = 1 − A(θ) / A(0)。出始めは θ = 0⁺(前面の楔からすぐこぼれる)、斜面が奥壁に届く角 θ_b = φ − atan(h₀ / L)、θ ≥ φ で全部出る。式は granular の spoon_tilt_dispense(lip="open") を呼ぶ(保持断面の式は granular の 1 か所だけ)。参考に口に縁がある器(lip="wall"、初めの量 L h₀、θ_c までこぼれない)の割合 F_lip_wall と theta_c_lip_wall_deg も返す(MuJoCo の口の開いた樋でどちらが合うかを比べるため)。
返り: A, A0, fraction, theta_back_deg, F_lip_wall, theta_c_lip_wall_deg。Raises ValueError: θ が [0, 90) の外、φ が (0, 90) の外、L・h0 が ≤ 0。
• 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.
• poc_powder_scoop_pour — py -3.11 examples/poc_powder_scoop_pour.py
table as input)course_layout · course_occupancy · course_contains · world_build · world_camera · world_move · lidar_scan · rss_longitudinal_same
scoop)spoon_bowl_volume · scoop_synth_side · revolution_volume_side · two_view_volume · scoop_volume_read · scoop_count · scoop_image_limit · tilt_pour_rate
*Provenance: scoop.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.