Apparatus

An apparatus figure explains an idea by building a machine that works the way the idea works, and letting the reader run it with a finger. The carriage is the animated value; the balls in the magazine are the tokens; the piston that stops at the top is top dead centre. The reader understands the idea because they recognise the machine, and every number the figure shows comes from the same model that moves its parts.

Five complete figures ship in examples/. Open the closest one before you start — each is a model.ts, a geometry.ts and a figure.tsx, and the three files are the shape every figure should have.