Generator

golden

A generator in the geometry library, called 5 times across 1 essays. Below: what it draws at its defaults and at each mode an essay asks for, what it checks while drawing, and everywhere it is used.

golden is one function. Everything below came out of it during this build, at parameters taken from the essays rather than invented for this page — so a figure here is the same figure a reader meets in an essay, and if the generator changes, this page changes with it.

At its defaults

The whirling squaresSquares with Fibonacci sides 1, 1, 2, 3, 5, 8, 13, each attached to the long side of what came before. They fill a 13 by 21 rectangle exactly.23581321 : 13 = 1.6154 (φ = 1.6180)

show: "ratio"

Ratios of consecutive Fibonacci numbersEach ratio of consecutive Fibonacci numbers, plotted against its index, closing on the golden ratio from alternate sides.246810121.41.51.61.71.81.92indexratioφ

What it checks while it draws

Collected by running the family and listening to lib/verify.js, not written here. The count is how many separate times this build put that claim to the test.

Where it is called

Changing this generator changes every figure on this list. That is what makes the list worth publishing rather than keeping in a check script.

The whole library · What the figures prove