mesh_write_obj — FILEIO `mesh` op

• Data kinds: mesh → text

• Call: import fullseye as fs; fs.ledger.mesh_write_obj(mesh) (to call the implementation directly, import fileio; fileio.mesh_write_obj(mesh); from the registry, opsfileio.get("mesh_write_obj"))

• GPU: none (CPU reference implementation only)

Usage

Write a triangle mesh as a Wavefront OBJ string containing v, vn, and f (text).

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

頂点の面積重み法線(滑らかな陰影)を vn として書き、f v//vn で参照する。どの面からも参照されない頂点には vn を書かず、面の法線が打ち消し合って頂点法線が定まらない頂点(表裏 2 枚の三角形など)は、その角だけ面の単位法線を使う —— OFF / PLY が書ける mesh は全部書ける。material/texture は書かない。呼び出し例:

text = mesh_write_obj((vertices, faces))。

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)

• (none yet)

Ops the type connects to (they accept `text` as input)

table_read_csv · mesh_read_ply · mesh_read_stl · mesh_read_obj · mesh_read_off · points_read_xyz · e57_read · archive_probe

Same category (`mesh`)

mesh_write_ply · mesh_read_ply · mesh_write_stl · mesh_read_stl · mesh_read_obj · mesh_write_off · mesh_read_off

*Provenance: fileio.py — FILEIO operator registry. This per-op note is generated by tools/opdocs.py md (do not hand-edit).*

mesh_write_obj — FILEIO mesh op