A graphics port.
A graphics port.
A real number.
A real number.
A real number.
A real number.
A real number.
A real number.
The
copy-pixels
function copies a rectangular area from one port to another. The
transform
,
mask
,
mask-x
and
mask-y
from the
to-port
's graphics state are used. The (
to-x to-y
) is transformed according to
to-port
's transform, but the image is not scaled or rotated. The
to-port
and
from-port
need not be the same depth and can be the same object. The
from-x
and
from-y
values are interpreted as pixel positions in the window coordinates of
from-port
, that is, they are not transformed by
from-port
's transform.