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§20 family: Polylines, vertices and meshes (§20.4.11 to §20.4.17, §20.4.33, §20.4.34, §20.4.85) #142
Description
Spec: ODA Open Design Specification for .dwg files v5.4.1, §20.4.11, §20.4.12, §20.4.13, §20.4.14, §20.4.15, §20.4.16, §20.4.17, §20.4.33, §20.4.34, §20.4.85.
Sections and their state on main (2026-10-21)
| Section | State | Code | Note |
|---|---|---|---|
| §20.4.11 VERTEX (2D) (10) (p. 114) | closes |
src/entities/vertex.rs | |
| §20.4.12 VERTEX (3D) (11) (p. 115) | closes |
src/entities/vertex.rs | |
| §20.4.13 VERTEX (MESH) (12) (p. 115) | closes |
src/entities/vertex.rs | |
| §20.4.14 VERTEX (PFACE) (13) (p. 116) | closes |
src/entities/vertex.rs | |
| §20.4.15 VERTEX (PFACE FACE) (14) (p. 116) | closes |
src/entities/vertex.rs | |
| §20.4.16 2D POLYLINE (15) (p. 116) | closes |
src/entities/polyline.rs | |
| §20.4.17 3D POLYLINE (16) (p. 117) | closes |
src/entities/polyline.rs | |
| §20.4.33 POLYLINE (PFACE) (29) (p. 129) | closes |
src/entities/polyface_mesh.rs | |
| §20.4.34 POLYLINE (MESH) (30) (p. 130) | closes |
src/entities/polygon_mesh.rs | |
| §20.4.85 LWPLINE (p. 204) | closes |
src/entities/lwpolyline.rs |
closes comes from the boundary checks on the local 19-file corpus (STATUS.md, 2026-08-30). It is re-measured on the public corpus in CI by the 0.2.0 measurement epic, and no section is complete until its values equal AutoCAD's own DXF export.
Acceptance, for every section above
- Every field of its prescription is read, with every version branch the section names
- Where the section prints an example, its bytes are a committed fixture and decode to the values printed
- The field list ends on the record's exact data-stream boundary (and string/handle-stream boundaries on R2007+) on every corpus record of the type, on every release band
- Every value equals AutoCAD's DXF export of the same drawing, matched by handle (DXF group 5), with the scorer from the oracle epic
- The corpus holds at least one record of the type on each release band, R13 to R2018; a band without one is recorded on the corpus epic, not assumed
- Its row in docs/spec-coverage.md moves to
complete, with the evidence linked
Subtasks
- §20.4.11 VERTEX (2D) (10)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.12 VERTEX (3D) (11)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.13 VERTEX (MESH) (12)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.14 VERTEX (PFACE) (13)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.15 VERTEX (PFACE FACE) (14)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.16 2D POLYLINE (15)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.17 3D POLYLINE (16)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.33 POLYLINE (PFACE) (29)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.34 POLYLINE (MESH) (30)
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
- §20.4.85 LWPLINE
- R13
- R14
- R2000
- R2004
- R2007
- R2010
- R2013
- R2018
A subtask becomes its own issue when someone picks it up; that issue quotes the section's field list and names the corpus records it is measured on.
Parent: #138
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