Function: branch()
lifecycle-kit / forms / branch
Function: branch()
branch(
unit,params):Path
Defined in: forms/rules/branch.ts:48
Recursively place shrunk, rotated copies of a unit at its own tip.
repeat places identical copies along a line; branch places
self-similarly SHRINKING copies along a tree, which is the shape a fern
frond, a coral colony and an antler actually have. The recursion is the
whole rule — a fern with more leaflets and a coral with more forks are the
same call with a larger depth, never a separate fernForm.
The unit is authored pointing along +x with unit length; each generation
attaches at attachAt fraction along the previous generation's (already
shrunk) length, fans out by angle per split, and shrinks again by
shrink. Recursion bottoms out at depth <= 0 rather than at a size
threshold, so shrink staying exactly 1 (no shrink at all) still
terminates — a correctness property a size-based cutoff would not have.
