The bundled hex_cell.scad has many more knobs than the dozen we used to
expose (box clearances, cap/box wall, vertical stacking, busbar template,
etc). Maintaining a hand-curated PARAMS list in Python next to a SCAD file
that already documents every variable inline was always going to drift.
Sync + auto-extract approach:
- scad/hex_cell.scad: replace with the upstream master file from
Albert Phan's Hex-Cell-Holder fork (adds the BUSBAR TEMPLATE section
and the "busbar template" part option).
- holder.py: PARAMS now built at import time by _scan_scad(), which
regexes top-level `name = literal; // help` lines into Param entries
up until the // END OF CONFIGURATION marker. Scan handles bool /
number / string literals; derived expressions and helper variables
are skipped automatically.
- Manual maps stay small and explicit: _SELECT_OPTIONS for the few
string-enum params (part, pack_style, box_style, template_outline,
template_hole_style, etc.), _GROUP_RULES for UI sectioning, and
_NUMBER_HINTS for sensible min/max/step on the most-tweaked numbers.
UI:
- holder-app.js: extra GROUP_ORDER / GROUP_LABELS for the new
sections (cap, box, insulator, bolts, wires, stacking, template,
advanced). Group titles are now click-to-collapse; the advanced
groups start collapsed so the form isn't a wall of inputs on load.
- holder.css: caret marker on the group title, smooth rotate on
collapse, hides the body via .collapsed class.
Net effect: every variable in the .scad — including the new busbar
template knobs — is editable from the page, with helpful comments
copied straight from the .scad source.
Server-side OpenSCAD renders STL from bundled hex_cell.scad with parameter
overrides via -D. Frontend is a Three.js viewer with auto-form generated
from /api/holder/params. 'Design busbars →' button posts the computed
cell coordinates to /api/projects and redirects to the busbar editor with
the holder cells pre-loaded.
- holder.py: openscad subprocess wrapper + compute_cells()
(Python mirror of get_hex_center_points_*)
- scad/hex_cell.scad: verbatim copy of Addy/Hex-Cell-Holder source
- app.py: /holder route + /api/holder/{params,render,cells}
- static/holder.html etc: parameter form + Three.js STL viewer
- Dockerfile / install.sh: apt install openscad
- static/index.html: nav link Holder ↔ Busbars in topbar
wenil