SJ Parameter Lab

S / J stroke 1 · 1 Weights, in units of X

Bounding box — Width × height

XY clearance 1.000X Exact on both axes

Minimum clearance 1.000X Sampled from the curves

Diagonal balance 28.73 / 21.27 UL = LR · UR = LL

All geometry is derived

Multipliers of X

X = base unit

Terminals

Stroke ends

Round is today’s cap. Flat is a butt end. Angled shears the cut by 30°.

Ratio lock

Free

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Holds the ink box at a height-to-width ratio by solving the J terminal or the J stem.

Derived geometry

Read-only

Construction equations

Rˣₛ = sx·(r + ½wₛ)X Rʸₛ = (r + ½wₛ)X Rˣⱼ = sxj·(r + ½wⱼ)X Rʸⱼ = (r + ½wⱼ)X u = √(a² − Rʸₛ²) Tₓ = Rˣₛ·u / a Tᵧ = a − Rʸₛ² / a Jₓ = (sx·(r + ½wₛ) + ½wₛ + ½wⱼ + g)X Jᵧ = (a + r + wₛ + ½wⱼ + tⱼ + g)X W = 2·sx·(r + ½wₛ) + wₛ + g + wⱼ os adds to the round radii; Jₓ stays on the un-overshot bowl k = 0 keeps the bowl · k = 1 meets G2 at the spine centre snap quantizes the centerline to height / snap pixels

Versions

This browser

Named copies stay in this browser. A/B swaps the two stored marks, and onion-skin draws the other one behind the live mark.

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Current values