image spinning

To spin a picture so it spins around freely through 360 deg turns.
An experiment in assembly language programming, its .asm file is here, it is compiled by the free fasmw assembler.
The program needs a .bmp type of picure having between 1400 and 500 pixels diameter. Pressing on the A, S, D, F -- K keys causes the image to rotate.
It has a simple menu for loading a picture, and only a few functions
The way it works is it scans the original bmp picture along radial lines and writes a table of pixels which has the pixels from the radial lines regularly spaced apart in a very simple way.