About the Author

Robert Clair holds a B.A. in physics from Oberlin College, and an M.A. and Ph.D. in physics from the University of California, Berkeley. He has more than twenty years experience in commercial software development, working mainly in CAD, modeling, and graphics. For the last seven years he has worked primarily in Objective-C on the Mac and now on the iPhone. Among other programs, he has written ZeusDraw, a vector drawing program for Mac OS X, and ZeusDraw Mobile, a drawing and painting program for the iPhone. He has also consulted on a number of other iPhone and iPad applications. Robert lives in New York City where he is the principal of Chromatic Bytes, LLC, an independent software company.