path ->inside: x=int,
y=intSucceed if the point (X, Y) â in the path's graphical<-device
coordinate system â lies inside the polygon formed by the path's
vertices. Uses the standard even-odd (ray-casting) rule with an implicit
closing edge from the last vertex back to the first, so path<-closed
is not consulted: an open polygon can still be probed as a closed region
for hit-testing purposes. For smooth paths the test is performed against
the interpolated poly-line. Fails silently when the path has fewer than
three vertices.
Companion to graphical->in_event_area,
which combines this test with a near-outline distance test to make edge
hits work on closed paths as well as open ones.
