kuk0/alg-vis — comment on commit 815bbbcd422f7d26c23b9b9500ad569190f45e1c
File: src/algvis/core/View.java line 13
By PaLy:

I think we need these coordinates to know where the node should start (- 5*D.radius is not always "up" and IMHO it's nicer when node is falling down from the top of the screen - but it's not very important) and to know when node is out of screen (to stop it and change its state to invisible; and for easier undoing)