Generator
reuleaux
A generator in the geometry library, called 6 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.
reuleaux 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
show: "rolling"
show: "family"
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.
- the 3-sided Reuleaux curve has one width at every angle ×3
- a Reuleaux polygon needs an odd number of sides ×1
- all the shapes have one width ×1
- every arc bulges away from the centre ×1
- ground and plank stay one width apart ×1
- the width does not depend on how far it has rolled ×1
- the width is the arc radius ×1
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.