Photo rotate

Rotate pictures. You load a picture which is type png or jpeg. The program makes it rotate as if on a turntable, and keys D - K adjust the speed. And keys Z X are zoom, and keys C, V, B and arrow keys do a distortion.
Key L is for load, S for save. Only the loading L works well.

It works by scanning a picture in concentric circles, and producing a table of numbers which contains pixel colors and their addresses on a bitmap memory.
The pixel colors can be read in a different phase from their addresses going around each concentric circle and it makes turning.