Each coordinate of a closed outline has its own real Fourier series: x(t) = ∑ (aₖ cos kt + bₖ sin kt), and the same for y.
A cosine and sine of frequency k make one arm of length √(aₖ² + bₖ²) turning k times per lap. One chain sets x, one sets y, and the pen sits where their guides cross. With N harmonics per axis the knight is off by 30.2 % of its height at N = 1, 0.70 % at N = 50.
At N = 1 both coordinates are pure sinusoids: an ellipse.
Computer use and browser use toolsets are now built into the Python and TypeScript SDKs for Claude.
The API tells you what Claude wants to click or type.
Previously, you had to write your own loop and map clicks and keystrokes to commands, but the SDKs now run the loop and send actions to drivers.
A few people asked how I made the isometric objects and cities, so I packaged it into a Claude skill.
Describe an object, device or building, and ISO-GLOW creates a single interactive HTML file.
Try it out yourself!
https://t.co/ncC0vK8B3h
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