Wave the mouse around to do stuff with the shape. BTW, nein means no and ja means yes (this is German if you don't know). If I figure how to display at least basic coloured in 3D models, I'll make a new platforming engine showcasing them.
WIP Messing around with pen and the trigonometric functions to try and figure out how to do raycasting and 3D modelling. (I know they're way out of my league right now, but I just want to try them) I think I have... some clue of what I'm doing... BTW, nein means no and ja means yes (this is German if you don't know).