tactorque op• Data kinds: matrix × scalar × scalar → matrix
• Call: import fullseye as fs; fs.ledger.surface_divergence_closed_form(p, G: 'float', nu: 'float') -> 'np.ndarray' (to call the implementation directly, import tactorque; tactorque.surface_divergence_closed_form(p, G: 'float', nu: 'float') -> 'np.ndarray'; from the registry, opsdrive.get("surface_divergence_closed_form"))
Closed form of the divergence of the tangential surface displacement of a half-space, ∇·ū = −(1−2ν) p/(2G) (derived in this module from the Boussinesq point load ū_r = −(1−2ν)P/(4πGr) and, in 2-D, ∇·(r̂/r) = 2πδ²). Gate comparing it with the numerical divergence of the convolution (0.2 % for r < 0.8a, measured). Raises ValueError: G ≤ 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_tactile_dipole_torque — py -3.11 examples/poc_tactile_dipole_torque.py
matrix as input)world_camera · lidar_scan · relative_motion · foe_from_motion · flow_from_depth_motion · ttc_truth · world_materials · mesh_signed_volume
tactorque)punch_pressure · punch_surface_uz · hertz_pressure_shifted · ellipse_pressure_shifted · pressure_first_moment · boussinesq_kernel · boussinesq_surface_displacement · tilt_shear_field
*Provenance: tactorque.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.