Parametric CAD model strings and renderer-independent Zod schemas for tscircuit.

modelprinter is an experimental companion to footprinter. The first model is flexscreen; the API deliberately resembles fp.string(...) so tscircuit can initially pass these strings through its existing cadModel footprinter-string path.

import { modelprinter } from "@tscircuit/modelprinter"

const model = modelprinter
  .string(
    "flexscreen_w40mm_h22.5mm_flex60mm_foldsabove_distance20mm_outset6mm",
  )
  .json()

// {
//   fn: "flexscreen",
//   width: 40,
//   height: 22.5,
//   flexCableLength: 60,
//   orientation: "foldedToFaceAboveBoard",
//   distanceAboveBoard: 20,
//   foldOutset: 6,
// }

As with footprinter, .params() exposes the unvalidated builder parameters so callers can inspect fn before choosing a renderer:

modelprinter.string("flexscreen_w40mm_foldsabove").params()
// { flexscreen: true, fn: "flexscreen", w: "40mm", foldsabove: true, ... }

flexScreenModelPropsSchema models the complete public FlexScreen surface: screen sizing, orientation shortcuts, flex and conductor geometry, fold geometry, board references, colors, visibility, offsets, and rotations. Lengths accept millimeter numbers or unit-bearing strings and normalize to millimeters.

import { flexScreenModelPropsSchema } from "@tscircuit/modelprinter"

const props = flexScreenModelPropsSchema.parse({
  diagonal: "2in",
  ratio: "16:9",
  foldsBelowBoard: true,
  distanceBelowBoard: "8mm",
  foldOutset: "5mm",
})

The package also exports FlexScreenModelPropsInput, FlexScreenModelProps, FlexScreenModelDefinition, and their constituent schemas.

Strings begin with flexscreen. Underscore-separated tokens set properties:

• Size: w40mm, h22.5mm, diag2in, ratio16x9
• Cable: flex60mm, flexwidth10mm, conductors10
• Orientation: sitsflat, foldsabove, foldsbelow, rightangleabove, rightanglebelow
• Fold: distance20mm, foldstart9mm, outset6mm, foldsegments24
• Visibility: hidescreen, hideflex, hideconductors, hidestiffeners
• Colors: screencolor(#112233), flexcolor(orange)

The shorthand distance is only valid with foldsabove or foldsbelow, and maps to the corresponding above/below property. Unknown tokens throw rather than being ignored.

bun install
bun test
bun run typecheck
bun run build