threshold: changes pressure with which the ink pressed onto wood
(0, 200, 500 -> 100)
higher -> more ink in the cuts -> more black
lower -> less ink -> less black
no recalculation needed when changing threshold 

toolwidth: changes width of tool
(10)
the cuts are visible

toollength: changes length of tool
(100)
edges -> was impossible to cut because tool too long

cutdistance: changes distance of cut
(20)
cuts have long distance between each other

cutamplitude: changes the distortion of the cuts (hardness of the wood)
(50 -> 10)
this would be very hard wood in reality

cutbumpiness: changes the number of cuts per cutline
(20 ->10)

toolshape: changes the shape of the knife
width -> 20
shape -> wedge
start of each cut -> how knife insertet in wood
shape -> angular

toogle heightmap -> on this heightmap the threshold is applied
prev, next: previous, next frame of scene
play: play scene, unfortunately very slow

create avi: creates png's, 180 frames, convertet to avi with shell script, lasts ~30min