---
title: 'Programmable fills and custom fill paths'
part: 'Part VII — Fabric Physics and the Professional Layer'
partNumber: 7
order: 6
subtitle: 'Direction/shape reporters, tatami rows, fill paths, and texture generators'
---

_Content coming soon._ Beyond `fill dir` and `fill shape`, the chapter now covers custom
geometric path lists via `fill path`, the `fillrows` bridge, and how `std.textures` provides
configured fields plus Hilbert, Truchet, hitomezashi, seigaiha, asanoha, and herringbone paths.

<Run>{`// A radial direction field fill
def radial(x, y) [
  return vheading([x, y])
]
fill dir @radial
beginfill
repeat 36 [ fd 4 rt 10 ]
endfill`}</Run>

<Checkpoint chapterId="ch-45">Chapter content coming soon.</Checkpoint>