Binds a list of transformed points in a port to a list across the execution of the macro's body.
The
with-transformed-points
macro binds
points
to a new list of
x
and
y
values obtained by post-multiplying them by the current transform of
port
, and then evaluates
body
. The
points
symbol must be bound to a list of alternating
x
and
y
values representing coordinate points in the
port
.