2 GP Reference Entries

copy-pixels

Function

Summary
: Copies a rectangular area from one port to another.
Signature

copy-pixels to-port from-port to-x to-y width height from-x from-y &rest args =>

Arguments

to-port: A graphics port
from-port: A graphics port
to-x: A real number
to-y: A real number
width: A real number
height: A real number
from-x: A real number
from-y: A real number

Description

Thecopy-pixels function copies a rectangular area from one port to another. Thetransform,mask,mask-x andmask-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.