"PathSegment"A segment of a path that is not intended to be used directly, merely as a convenience base class for path segment operators.
x:Object of class "numeric". An x-location.
y:Object of class "numeric". A y-location.
signature(object = "PathSegment", tm =
"matrix"): When given a 3x3 numeric transformation matrix, the
points in the segment are transformed, and produce a new object
representing a path segment. Not intended to be used directly on
path segments, but objects that inherit from path segments
(e.g. the "M", "L", "C", and "Z"
operators.