LÖVE

Jup that's it, Instruction are in game

Ohai Gijs!!
It's very coincidential that I'm viewing your post right now, cuz I'm almost never on these forums.
Those polygons look like church windows. What potential use could this have? Maybe like shape cutting and such. Still, neat demo. Btw, it errors at line 47 when pressing the wasd keys several times, no idea what order.

If all you want is some cute wall paper, have you tried a distorted grid pattern?
Of course, you wouldn't have such a sexy name as 'voronoi' and couln't use terms like "Euclidean" & "Manhattan".
Good job!

Pressing "M" is fucked up: nothing happens, until I keep mashing it, then it errors (an empty range passed into random).

Got what I deserved.
Just messed up someone elses code.
Have used 'm' key input without removing original script's useage.
Should have removed original code but wanted to show a comparison of the images.
(The 'm' key is actually doing something - making changes to the larger image, not the smaller original image. The reason it errors is, a Robin discovered, that I failed to trap inappropriate input to my random assignment caused by repeatly pressing the 'm' key. Didn't anticipate such an persistent attack.)
Sorry.