This is a quick note about window flipping effect under OS X.

I’ve found the code somwhere on the internet and I like how the effect looks (although, I don’t like the code).

Basicly the process consists of these steps:

1. Render two window’s views into layers
2. Create a temporary transparent window
3. Animate transforms of two rendered layers inside created window to emulate windows rotation
4. Visiblate/invisiblate base windows when needed

This is how it looks:

Even though the source code is not pretty at all it is worth looking at.