mirror of
https://github.com/storytold/vectorcraft.git
synced 2026-11-01 13:47:21 -06:00
dotCooCoo
d0a903d5d7
A closed path of four cubics that is the four-cubic circle under an affine map (an ellipse, or a circle scaled out of proportion) is written as a native ELLIPSE in R13 and later, with its center, major axis and minor to major ratio. The check maps the path back onto the unit circle and runs the existing circle recognition on it. R12 keeps the existing fallback, and ellipses with a ratio under 1e-6 stay splines. The ratio and end parameter are written in full so that a thin ellipse keeps its size and a whole turn reads back closed. Part of #1299.