algorithmic modeling for Rhino
gHowl is a set of components which allows the interoperability of various applications. Through the UDP components, processing and grasshopper can communicate.
What kind of data do you want to pass from processing to grasshopper?
I've just get how to do that, there was a problem with mine processing definition but now is ok. However i've send via cam a face recognition from processing to grasshopper in order to move some fabric string depending on mine position. Now i'm working with arduino (via firefly), to make mine model real.