mirror of
https://github.com/storytold/vectorcraft.git
synced 2026-11-15 08:45:25 +00:00
Two intervals at the middle of a band joined whenever their crossings came out at the same x, even when the two edges are not along one line and only round to that x. A slanted edge whose crossings of the band all round to the x of a separate contour's edge then let a line run across the gap between the contours. The crossings now carry the line they were found along. Intervals join at an x only when both crossings are along one line (contours that meet along an edge) or both lie exactly at that x.