Post base points along path (vertices, plus intermediates at spacing). spacing, when given, must be finite and positive: a zero spacing would need infinitely many posts, and NaN would silently drop segment ends.
path
spacing
Optional
Post base points along
path(vertices, plus intermediates atspacing).spacing, when given, must be finite and positive: a zero spacing would need infinitely many posts, and NaN would silently drop segment ends.