As @thomasnieldshared a simulation example here: https://kotlinlang.slack.com/archives/C4W52CFEZ/p1546314811089100 I can share one of my own. Here it is: https://bitbucket.org/mipt-npm/muon-sim/src/default/ A simulation of muon interaction with deep underground low-background experiment to measure angular distribution of muons underground. It uses commons-math geometry engine for simulation itself, a unique statistical procedure to extract the distribution itself (I can give a reference to the article) and features 3d visualization with JavaFX.