bitmap-rotate-left
Synopsis
(bitmap-rotate-left bitmap)
Parameters
- bitmap
Description
This procedure rotates a bitmap 90 degrees counterclockwise.
Side Effects
Return Value
The resulting bitmap is returned.
Example
> (define x (string->bitmap "1234"))
x
> (define y (bitmap-rotate-left x))
y
> (bitmap-writepng y "bitmap-rotate-left.png")
ok
>
The resulting PNG file displays as follows:
