msdf-atlas

Structures and aeson parsers for glyph atlases.

You may not want this when working with libfreetype/TTFs directly, but it can be useful for pre-rendered bitmap/sdf fonts.

Compatible generators:

• original: https://github.com/Chlumsky/msdf-atlas-gen
• modded to support capsHeight metric: https://github.com/dpwiz/msdf-atlas-gen/tree/v1.13%2Bcapsheight
  • A new field is "sizeUnit": "capsHeight", indicating that size is not EMs and you don't have to convert.

The package also provides a compacted representation of the atlas which boils down to a pair of storable vectors of boxes (and some metadata). This allows you to e.g. upload them to GPU and shuttle just glyph ids and styles when rendering.