fontmesh

Library for converting font glyphs to 2D and 3D triangle meshes. A faster, pure Rust alternative to ttf2mesh.

Font parsing is handled by skrifa, so both TrueType (glyf) and OpenType with CFF/PostScript outlines are supported, and the same parsed-font handle plugs straight into shaping libraries like cosmic-text.

Quick Start

use fontmesh::{parse_font, glyph_id, glyph_to_mesh_2d, glyph_to_mesh_3d};

let font_data = include_bytes!("font.ttf");
let font = parse_font(font_data)?;
let gid = glyph_id(&font, 'A').expect("font contains 'A'");

// 2D mesh with 20 subdivisions per curve
let mesh_2d = glyph_to_mesh_2d(&font, gid, 20)?;

// 3D mesh with depth 0.1 em and 50 subdivisions
let mesh_3d = glyph_to_mesh_3d(&font, gid, 0.1, 50)?;

Output coordinates are normalised to 1.0 em — depth = 0.1 is 10 % of the font's em square.

Working with a shaper

If you already have a skrifa::FontRef or skrifa::GlyphId from a shaper (cosmic-text, harfbuzz, …), pass it straight in — no extra parse is needed:

use fontmesh::{FontRef, GlyphId, glyph_to_mesh_3d};

let font: FontRef = /* from your shaper */;
let gid: GlyphId = /* from your shaper */;
let mesh = glyph_to_mesh_3d(&font, gid, 0.1, 20)?;

Examples

cargo run --example basic
cargo run --example serde --features serde

Performance

fontmesh is 2-3x faster than comparable libraries.

Run benchmarks: cargo bench

License