slice_push_ratio — DRIVE cutting op

• Data kinds: scalar × scalar × scalar → scalar

• Call: import fullseye as fs; fs.ledger.slice_push_ratio(theta_deg: 'float', vx: 'float', vz: 'float') -> 'float' (to call the implementation directly, import cutting; cutting.slice_push_ratio(theta_deg: 'float', vx: 'float', vz: 'float') -> 'float'; from the registry, opsdrive.get("slice_push_ratio"))

Usage

Slice/push ratio ξ from the cutting-edge inclination θ (x-z, counterclockwise) and the blade velocity (vx, −vz) (vz > 0 is downward).

> The detailed description below is the original text — the summary and the headings are translated.

刃先方向 u = (cos θ, sin θ)、法線 n = (−sin θ, cos θ) として ξ = |v·u| / |v·n|。vx = 0 なら ξ = tan|θ|(Atkins 2016 の本文「傾けた刃を縦に動かすと ξ = tan i」)に戻る。刃が自分の刃先に沿って動く(押しが無い)と ValueError。

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_food_cutting_measure — py -3.11 examples/poc_food_cutting_measure.py

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

spin_from_marker_sequence · carla_transform_matrix · carla_pose_to_world · carla_camera_pose · carla_xy_yaw · carla_scene_load · town_chain · osm_parse

Same category (cutting)

cutting_scene · cutting_face_render · cutting_edge_render · cutting_episode_synth · cutting_wrist_mjcf · knife_edge_track · cut_depth_from_side · slice_thickness_profile

*Provenance: cutting.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.