slice op• Data kinds: mesh → table
• Call: import fullseye as fs; fs.ledger.mesh_slice_contours(mesh: 'Any', z: 'float', tol: 'float' = 1e-06) -> 'dict[str, np.ndarray]' (to call the implementation directly, import printpath; printpath.mesh_slice_contours(mesh: 'Any', z: 'float', tol: 'float' = 1e-06) -> 'dict[str, np.ndarray]'; from the registry, opsprintpath.get("mesh_slice_contours"))
Table of contours table obtained by cutting a triangle mesh with the plane z: columns ring (ring number), x, y (mm).
The intersection of each triangle with the plane becomes a segment, oriented by the triangle normal (outer contours counter-clockwise, holes clockwise), and endpoints are matched to join them into closed rings (open chains if they do not close) (the classic slicer). The signed area of a ring tells filled regions from holes. When a vertex lies exactly on the plane, it is lifted by tol to avoid degeneracy. If the plane does not touch the shape, ValueError (an empty layer is reported as "nothing there").
• 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_print_layer_inspection — py -3.11 examples/poc_print_layer_inspection.py
table as input)gcode_write · gcode_extrusion_volume · gcode_time_estimate · gcode_layer_image · contours_to_gcode
slice)mesh_slice_stack · contours_to_gcode
*Provenance: printpath.py — PRINTPATH 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.