course_s_curve — DRIVE course op

• Data kinds: none → table (an op determined by its arguments alone — it takes no image or data input)

• Call: import fullseye as fs; fs.ledger.course_s_curve(width=3.5, radius_outer=7.5, arc_fraction=0.375, entry=4.0, arc_pts=48) (to call the implementation directly, import drivecourse; drivecourse.course_s_curve(width=3.5, radius_outer=7.5, arc_fraction=0.375, entry=4.0, arc_pts=48); from the registry, opsdrive.get("course_s_curve"))

Usage

Curved course (S-shaped): straight E → left arc (central angle 2π·f) → right arc (same) → straight E.

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

外径 R_o = radius_outer、内径 R_i = R_o − w、中心線の半径 R_c = (R_o + R_i)/2。2 つの弧は共通接線点で曲率の向きが反転する。多角形は中心線の標本点を法線方向に ±w/2 ずらして作る(弧の標本点は外円・内円の上に厳密に乗る)。面積 = 2πf(R_o² − R_i²) + 2Ew。規格: A = 3.5, B = 7.5, C = 3/8 → params["regulation"]。

Raises ValueError: 幅・外径が正でない、R_o ≤ w(内径が 0 以下)、arc_fraction ∉ (0, 1)、E < 0、arc_pts が 1 以上の整数でない。

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_driving_school — py -3.11 examples/poc_driving_school.py

• poc_driving_town — py -3.11 examples/poc_driving_town.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 (course)

course_crank · course_turnaround · course_slope · course_intersection · course_parallel_parking · course_crossing · course_road · course_loop_bend


*Provenance: drivecourse.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.