I'm trying to make a PDF manual for matrix multiplication with LaTeX. I'd like to generate a graphic similar to this one (from Wikipedia/Matrix multiplication):
I guess this will be quite a bit of work, but is there another way than using the eepic package? I have read into some examples and the manual, and it seems very complex to generate a graphic like this with that package.
If there is no other way, I'll have to use eepic, but I hope someone here could point me to a package or another way.