openpencil/packages/fig
Ed-Key 9b48e47329 feat(canvas): render arrow stroke caps on lines and open vectors
ARROW_LINES and ARROW_EQUILATERAL stroke caps were accepted by the schema
and round-tripped from .fig files, but the renderer mapped every cap to
Butt, so imported arrows lost their heads and arrows could not be drawn
locally.

Add a pure arrow-cap geometry module to scene-graph (open-endpoint
collection with per-vertex cap overrides, weight-scaled head geometry)
and draw heads in the stroke color for LINE nodes and open VECTOR
centerline strokes, including the dashed-centerline path. Fold the head
reach into strokeOverflow and the node picture margin so heads are not
cropped by visual bounds, caches, or culling. Round-trip per-vertex
stroke caps through the .fig vector style override table so one-ended
Figma arrows import correctly. Expose both caps in the stroke inspector
cap picker with localized labels, and cover the renderer with an
arrow-stroke-caps Playwright canvas snapshot.

Claude-Session: https://claude.ai/code/session_012zjEbyLSBYyPpJP4fu1XNB
2026-08-31 21:25:38 +03:00
..
scripts refactor(fig): own NodeChange export policy 2026-07-18 02:41:35 +03:00
src feat(canvas): render arrow stroke caps on lines and open vectors 2026-08-31 21:25:38 +03:00
tests feat(canvas): render arrow stroke caps on lines and open vectors 2026-08-31 21:25:38 +03:00
package.json chore: refresh compatible dependencies (#545) 2026-08-18 17:44:40 +03:00
README.md refactor(fig): own NodeChange export policy 2026-07-18 02:41:35 +03:00
tsconfig.json refactor(fig): own instance interpretation 2026-07-18 02:06:34 +03:00
tsconfig.test.json feat(fig): scaffold package shell 2026-06-30 10:51:36 +03:00
tsdown.config.ts refactor(fig): own instance interpretation 2026-07-18 02:06:34 +03:00

@open-pencil/fig

.fig file-format package for OpenPencil.

The package owns the outer .fig archive boundary and is the staged home for Figma-specific SceneGraph conversion policy. Production SceneGraph read/write remains available through @open-pencil/core/io while conversion modules move behind this package's public API.

Current ownership:

  • Complete .fig archive parsing through parseFigBuffer()
  • .fig archive assembly through writeFigArchive()
  • Canvas payload and image resource handling
  • readFigContainer() / writeFigContainer() helpers for raw fig-kiwi payloads
  • .fig source and archive result types
  • NodeChange-to-SceneGraph property conversion, including styles, plugin metadata, text, paint, vector, and font policy, through @open-pencil/fig/node-change
  • Component-property, symbol-override, derived-symbol-data, and instance synchronization policy through @open-pencil/fig/instance-overrides
  • Effective raw-metadata precedence and invalidation over SceneGraph's format-neutral edited-field tracking
  • SceneGraph-to-NodeChange export conversion with an explicit glyph-outline runtime service
  • Package-local archive, conversion, instance, export, and dist smoke tests

Planned ownership:

  • Oracle-backed .fig fixtures

Non-goals:

  • Generic Kiwi schema/runtime internals — use @open-pencil/kiwi
  • Format-neutral IO registration, export targeting, CanvasKit thumbnails, or browser workers — use @open-pencil/core/io
  • Editor actions, renderer behavior, Vue/app UI, CLI formatting, or MCP transport

This follows the existing @open-pencil/pen pattern: a format package owns its source model/parser and SceneGraph policy, while core registers it in the shared IO system.

Checks

cd packages/fig
bun run check