Hey...

I'm having some troubles trying to draw a simple line!?

Or maybe not that simple a line...

I want to create a line, or it's probably more a rect that
slowly gets filled with a solid color, and it should also be
able to do a 90 degree corner.

I could simple add a counter and then fill the rect a little
more for each game loop, but then how can I make it turn?

And ideas??