# fogleman/ln

3D line art engine.

Repository: https://github.com/fogleman/ln
Canonical: https://ross.abutalabs.com/products/ln
Homepage: https://godoc.org/github.com/fogleman/ln/ln
Language: Go
License: MIT
License Family: permissive
Last push: 2019-07-19T09:00:40+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3888, "days_push": 2602, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3373, forks 130 (observed 2026-08-28T04:07:58.438962+00:00)

## What it is
A vector-based 3D rendering engine written in Go that produces 2D vector graphics (SVG/PNG) depicting 3D scenes as line art. It was created for drawing 3D scenes with pen plotters and supports primitives, triangle meshes, and CSG operations.

## Use cases
- render 3d scenes as svg line drawings
- generate vector graphics for pen plotter drawings
- convert obj or stl meshes to line art
- create technical line drawings of 3d models in go
- render hidden-line-removed 3d wireframe images

## When to choose
- you need vector (SVG) output of 3D scenes rather than rasterized images
- you want to draw 3D line art with a pen plotter
- you need CSG operations with line-based rendering in Go

## When to avoid
- you need rasterized 3D rendering like OpenGL or a full game engine
- you need an actively maintained project with recent releases
- you need photorealistic rendering or shading

## Facets
- artifact type: library
- maturity: maintenance
- function: graphics, image-processing, simulation
- domain: graphics, developer-tools, cross-platform
- platform: go, cross-platform, cli
- tags: 3d-rendering, vector-graphics, svg, line-art, pen-plotter, csg, ray-tracing

## Member repositories
- fogleman/ln (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:58.438962+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T18:39:56.216742+00:00, confidence not recorded.
  - readme: https://github.com/fogleman/ln (fetched 2026-08-28T04:07:58.438962+00:00, sha b1f7b89fbc8f)
  - homepage: https://godoc.org/github.com/fogleman/ln/ln (fetched 2026-08-29T09:33:30.964293+00:00, sha de8ec1527730)
  - site_page: https://pkg.go.dev/about (fetched 2026-08-29T09:33:30.976068+00:00, sha 757852027879)
  - site_page: https://pkg.go.dev/github.com/fogleman/ln/ln (fetched 2026-08-29T09:33:30.973790+00:00, sha 62fe23ef8b97)
  - site_page: https://go.dev/project (fetched 2026-08-29T09:33:30.978486+00:00, sha d5ca00bb378b)
- Data as of 2026-08-30T08:39:29.467469+00:00.