Okay, it appears matey can't use LBP any more. It must lock to PS3 console somehow.
My experience was short-lived, but I learnt a lot. And a feature that this game NEEDS is scanning a design by camera to create an object. The drawing tools are pretty manky. Movement of a block is locked to its X and Y vectors. Actually drawing an outline is flippin' tricky! The technology exists to draw an outline, scan it in, and create a profile. This is essential for opening up the game to more creators. I can't see the average 7 year old wanting to draw their pet dog getting very far without such tech, but with it, it'll be usable by everyone no matter what their artistic ability, and a darned sight faster for everyone to boot.
No it isn't locked like that. Only the Square is locked to X and Y to help you draw with 90 degree angles. Use a circle if you want wavy shapes...not locked in any way (which obv makes it harder to do right angles )