Variable font support: multi-axis interpolation via fontdrasil#46

Merged

kostyafarber merged 42 commits into

mainfrom

kostya/rust-interpolation

Apr 26, 2026

Commits on Apr 12, 2026

Add variable font support: axes, sources, interpolation, and preview slider

claude
authored and
kostyafarber
committed
Add MutatorSansVariable.glyphs fixture and variable font tests

claude
authored and
kostyafarber
committed
Add .designspace file loading support

kostyafarber
and
claude
committed
Replace homebrew fixtures with real MutatorSans designspace

kostyafarber
and
claude
committed
Always use default layer for glyph rendering and edit sessions

kostyafarber
and
claude
committed
Fix interpolation: skip empty support layer masters, add debug logging

kostyafarber
and
claude
committed
Replace inverse-distance interpolation with OpenType VariationModel

kostyafarber
and
claude
committed
temp: add debug logging to VariationPanel
kostyafarber
committed
Fix getGlyphMasterSnapshots for editing glyph

kostyafarber
and
claude
committed
Handle duplicate locations and errors in interpolation

kostyafarber
and
claude
committed
Fix duplicate React keys in master buttons

kostyafarber
and
claude
committed
temp: debug slider callback
kostyafarber
committed
temp: more debug
kostyafarber
committed
Remove debug logging from interpolation and VariationPanel

kostyafarber
and
claude
committed
debug: log master contour counts and compat result on slider
kostyafarber
committed
debug: rust-side master snapshot logging
kostyafarber
committed
Filter incompatible masters instead of failing, remove debug logs

kostyafarber
and
claude
committed
Use majority-vote compatibility filtering for interpolation

kostyafarber
and
claude
committed
Add directBlend fallback when default master is incompatible

kostyafarber
and
claude
committed
Sort contours deterministically and filter empty ones in master snapshots

kostyafarber
and
claude
committed
Add edge case tests for interpolation and master snapshots

kostyafarber
and
claude
committed
Remove directBlend, use default-as-reference filtering like Fontra

kostyafarber
and
claude
committed
Replace flat-array interpolation with structured itemwise arithmetic

kostyafarber
and
claude
committed
Wire variation sliders to glyph grid preview

kostyafarber
and
claude
committed
Use IndexMap for GlyphLayer contours to preserve insertion order

kostyafarber
and
claude
committed
Add Rust-native variable font interpolation via VariationModel

kostyafarber
and
claude
committed
Switch GlyphPreview to Rust interpolateGlyph for grid perf

kostyafarber
and
claude
committed
wip
kostyafarber
committed
Fix VariationPanel for consolidated Editor/Font API

kostyafarber
and
claude
committed
Fix text run: use font.glyphName() for codepoint resolution

kostyafarber
and
claude
committed
Round xAdvance display in GlyphSection

kostyafarber
and
claude
committed
Font.getPath() interpolates live when variation location is active

kostyafarber
and
claude
committed
Interpolate xAdvance too: getAdvance() uses interpolated snapshot

kostyafarber
and
claude
committed
Fix text run re-layout on variation change

kostyafarber
and
claude
committed
Memoize interpolation per location — no Rust calls during pan/zoom

kostyafarber
and
claude
committed
Variation engine: weights from Rust, deltas × apply in TS signals

kostyafarber
and
claude
committed
Fix interpolation: use Rust-computed forward-differenced deltas

kostyafarber
and
claude
committed
Simplify Variation: use Rust interpolateGlyph directly with per-location cache

kostyafarber
and
claude
committed
Revert Variation engine — Rust interpolation has multi-axis bug

kostyafarber
and
claude
committed

Commits on Apr 23, 2026

Merge branch 'main' into kostya/rust-interpolation
kostyafarber
committed

Commits on Apr 25, 2026

replace handrolled variation with fontdrasils
kostyafarber
committed

Commits on Apr 26, 2026

Wire variation: fontdrasil deltas in Rust, eval in TS
kostyafarber
committed