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

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.