I am wondering if anyone has an example of dynamic dynamics code based on position, e.g. with spring constraint? I found this article describing a technique that has some pseudo code, but I would like to see some java / c / C ++ / as / code ...
http://www.matthiasmueller.info/publications/hpbd.pdf
Modeling a soft body (and fabric / rope) in an open source library Bullet Physics uses position-based dynamics as described by Thomas Jacobsen ( http://www.gamasutra.com/resource_guide/20030121/jacobson_01.shtml ) and your paper link Matthias Muller.
See http://bullet.googlecode.com for C ++ source code.
There is an updated source of google code that has a more direct implementation of this very idea. It was called OpenCloth , and it’s a truly amazing collection of different approaches, neatly and simply implemented.
Processing physics libraries, Java.
. , , - Muller.