LED Matrix Display Graphics?

I have a 32x32 LED matrix. Is it possible to display graphics from my computer onto the display? I saw people displaying graphics like dancers on a 3d LED cube. How is this done? Also saw people displaying patterns from a program called MATLAB.

I think processing is involved. Can anyone provide any info on how I can learn to do this? Planning on making a 3D 9x9x9 cube soon also.

http://lmgtfy.com/?q=led+matrix+animation