[gdk-pixbuf] turning image

[Oleg Klimov <quif land ru>]

Hello,

I've already written image transformation using 2x2 arbitrary matrix 
(that includes rotation)
for Gtk 1 (GdkImage). Now I'm about to port it over to Gtk 2 
(GdkPixbuf). There will be
no antialiasing yet, just nearest pixel.

Not sure: should I write "works for me" or someone else maybe [at least 
potentialy] interested?
It can be used in 2d games, performance is good (fixed-point 
calculations, optimized)
(Imagine pictures in gtk-demo moving in circles, scaling and rotating:)