6.6 DUIM-Graphics Module
copy-area
Generic function
Summary
Copies a rectangle of pixels from a specified medium to the same medium.
Signature
copy-area medium from-x from-y width height to-x to-y #key function => ()
Arguments
- medium
- An instance of type
<medium>. - from-x
- An instance of type
<coordinate>. - from-y
- An instance of type
<coordinate>. - width
- An instance of type
<integer>. - height
- An instance of type
<integer>. - to-x
- An instance of type
<coordinate>. - to-y
- An instance of type
<coordinate>. - function
- An instance of type
<function>. Default value:$boole-1.
Values
None
Library
duim-graphics
Module
duim-graphics
Description
Copies the pixels from the medium starting at the position specified by (from-x, from-y) to the position (to-x, to-y) on the same medium. A rectangle whose width and height is specified by width and height is copied. If medium is a medium or a stream, then the x and y values are transformed by the user transformation. The copying must be done by medium-copy-copy.