Add parameterized SMD slide switch footprints

[seveibar]

Summary

• add a new smdslideswitch7 footprint generator for three signal pads, four mounting pads, and optional alignment holes
• support sparse signal rows through signalcols and missing(...)
• add geometry assertions and visual SVG snapshots for MINI MSK12CO2 and MSK12C02
• update @tscircuit/math-utils so clean installs provide the bounds helpers used by the generator

Why

The JLC5000 benchmark currently misclassifies these two related SMD slide-switch footprints and scores them at roughly 10% copper IoU. This generator represents both layouts without per-pad coordinates, including the larger switch's four-position signal row with position 2 absent.

Direct comparison against the imported JLC5000 footprints gives 100% copper IoU for both C2681570 and C431540.

Validation

• bun install --frozen-lockfile — passed
• bun test tests/smdslideswitch.test.ts — 3 passed
• bun run build — passed
• bunx biome check src/fn/smdslideswitch.ts src/fn/index.ts src/footprinter.ts tests/smdslideswitch.test.ts — passed
• direct JLC5000 copper comparison — 100% IoU for both targets
• local macOS full bun test — 496 passed; 5 unrelated SVG snapshot comparisons failed (melf, sod323fl, diode1210, diode0603, and sod923)

[graphite-app]

This file contains three test(...) calls (lines 18, 70, and 114), but the style guide rule states that a *.test.ts file may have AT MOST one test(...). After the first test, the remaining tests should be split into separate, numbered files. For example: smdslideswitch1.test.ts (for the MINI MSK12CO2 test), smdslideswitch2.test.ts (for the missing signal position test), and smdslideswitch3.test.ts (for the wrong signal-pad count rejection test).

Suggested change

	test("smdslideswitch7 represents MINI MSK12CO2", () => {
	const footprint =
	"smdslideswitch7_p1mm_pw0.7mm_pl1.5mm_mounty-1.800098mm_mpx5.500116mm_mpy2.200148mm_mpw1mm_mpl0.8mm_holex1.499997mm_holed0.900024mm"
	const circuitJson = fp.string(footprint).circuitJson()
	expect(getPadGeometry(footprint)).toEqual([
	{ x: -1, y: 0, width: 0.7, height: 1.5, port_hints: ["1"] },
	{ x: 0, y: 0, width: 0.7, height: 1.5, port_hints: ["2"] },
	{ x: 1, y: 0, width: 0.7, height: 1.5, port_hints: ["3"] },
	{
	x: -2.750058,
	y: -0.700024,
	width: 1,
	height: 0.8,
	port_hints: ["4"],
	},
	{
	x: 2.750058,
	y: -0.700024,
	width: 1,
	height: 0.8,
	port_hints: ["5"],
	},
	{
	x: -2.750058,
	y: -2.900172,
	width: 1,
	height: 0.8,
	port_hints: ["6"],
	},
	{
	x: 2.750058,
	y: -2.900172,
	width: 1,
	height: 0.8,
	port_hints: ["7"],
	},
	])
	expect(
	circuitJson
	.filter((element) => element.type === "pcb_hole")
	.map(({ x, y, hole_diameter }) => ({ x, y, hole_diameter })),
	).toEqual([
	{ x: -1.499997, y: -1.800098, hole_diameter: 0.900024 },
	{ x: 1.499997, y: -1.800098, hole_diameter: 0.900024 },
	])
	expect(convertCircuitJsonToPcbSvg(circuitJson)).toMatchSvgSnapshot(
	import.meta.path,
	"mini_msk12co2",
	)
	})
	test("smdslideswitch7 supports a missing signal position", () => {
	const footprint =
	"smdslideswitch7_signalcols4_missing(2)_p1.5mm_pw0.6mm_pl1.524mm_mounty-2.250059mm_mpx7.199884mm_mpy2.29997mm_mpw1.2mm_mpl0.7mm_holex1.499997mm_holey-2.250186mm_holed0.900024mm"
	const circuitJson = fp.string(footprint).circuitJson()
	expect(getPadGeometry(footprint)).toEqual([
	{ x: -2.25, y: 0, width: 0.6, height: 1.524, port_hints: ["1"] },
	{ x: 0.75, y: 0, width: 0.6, height: 1.524, port_hints: ["2"] },
	{ x: 2.25, y: 0, width: 0.6, height: 1.524, port_hints: ["3"] },
	{
	x: -3.599942,
	y: -1.100074,
	width: 1.2,
	height: 0.7,
	port_hints: ["4"],
	},
	{
	x: 3.599942,
	y: -1.100074,
	width: 1.2,
	height: 0.7,
	port_hints: ["5"],
	},
	{
	x: -3.599942,
	y: -3.400044,
	width: 1.2,
	height: 0.7,
	port_hints: ["6"],
	},
	{
	x: 3.599942,
	y: -3.400044,
	width: 1.2,
	height: 0.7,
	port_hints: ["7"],
	},
	])
	expect(convertCircuitJsonToPcbSvg(circuitJson)).toMatchSvgSnapshot(
	import.meta.path,
	"msk12c02",
	)
	})
	test("smdslideswitch7 rejects the wrong signal-pad count", () => {
	expect(() => fp.string("smdslideswitch7_signalcols4").circuitJson()).toThrow(
	"needs 3 signal pads",
	)
	})
	test("smdslideswitch7 represents MINI MSK12CO2", () => {
	const footprint =
	"smdslideswitch7_p1mm_pw0.7mm_pl1.5mm_mounty-1.800098mm_mpx5.500116mm_mpy2.200148mm_mpw1mm_mpl0.8mm_holex1.499997mm_holed0.900024mm"
	const circuitJson = fp.string(footprint).circuitJson()
	expect(getPadGeometry(footprint)).toEqual([
	{ x: -1, y: 0, width: 0.7, height: 1.5, port_hints: ["1"] },
	{ x: 0, y: 0, width: 0.7, height: 1.5, port_hints: ["2"] },
	{ x: 1, y: 0, width: 0.7, height: 1.5, port_hints: ["3"] },
	{
	x: -2.750058,
	y: -0.700024,
	width: 1,
	height: 0.8,
	port_hints: ["4"],
	},
	{
	x: 2.750058,
	y: -0.700024,
	width: 1,
	height: 0.8,
	port_hints: ["5"],
	},
	{
	x: -2.750058,
	y: -2.900172,
	width: 1,
	height: 0.8,
	port_hints: ["6"],
	},
	{
	x: 2.750058,
	y: -2.900172,
	width: 1,
	height: 0.8,
	port_hints: ["7"],
	},
	])
	expect(
	circuitJson
	.filter((element) => element.type === "pcb_hole")
	.map(({ x, y, hole_diameter }) => ({ x, y, hole_diameter })),
	).toEqual([
	{ x: -1.499997, y: -1.800098, hole_diameter: 0.900024 },
	{ x: 1.499997, y: -1.800098, hole_diameter: 0.900024 },
	])
	expect(convertCircuitJsonToPcbSvg(circuitJson)).toMatchSvgSnapshot(
	import.meta.path,
	"mini_msk12co2",
	)
	})

Spotted by Graphite (based on custom rule: Custom rule)



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[tscircuitbot]

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