Font.ttf.transform: def of gralha-truetype@0.1.0.1
Import: import gralha-truetype@0.1.0.1/font.bend as Font
Lines 242-248 of gralha-truetype@0.1.0.1/font.bend: https://jend.leeeet.dev/read.txt?path=gralha-truetype@0.1.0.1/font.bend&start_line=242&end_line=248

import Base

def ttf.transform(pts: List<&2, TTPoint>, +a: F32, +bb: F32, +c: F32, +d: F32, +dx: F32, +dy: F32) -> List<&2, TTPoint>:
  match pts:
    case Nil{}: Nil{}
    case Con{TTPoint{x, y, on}, rest}:
      +px = x
      +py = y
      Con{TTPoint{(a * px + c * py + dx : F32), (bb * px + d * py + dy : F32), on}, ttf.transform(rest, a, bb, c, d, dx, dy)}

Uses (5):
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.add
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=F32.mul
  https://jend.leeeet.dev/definition.txt?path=Base/base.bend&name=List
  https://jend.leeeet.dev/definition.txt?path=gralha-truetype@0.1.0.1/font.bend&name=TTPoint