image spinning

I have added a new exe file which is a bit improved. It's the same one that I put in "photo rotate". It can load lots of jpeg pictures.
As before the program is To spin a picture so it spins around freely through 360 deg turns.
This description is about the older version of my program. 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.
But with the newer version L loads and S saves, however you use the up arrow for loading a picture.
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.
I tried both radial lines scanning and concentric circles scanning, both worked