Doesn't model[XYZ] gives you enough information to calculate the current matrix, i.e. allow the creation of a portable getMatrix which doesn't require java hacking. I made a couple of tries but unfortunately my linear algebra is too weak for the code to be obvious. Rotate, scale and transform I could handle(and is all I need) but the 4x4 matrix to also handle shear is confusing me. I'll get there eventually. printMatrix is helping me learn how this stuff works but if anyone could suggest a pointer to a simplified, implementation oriented description of the math I'd really appreciate it.

 I wish for a getMatrix/setMatrix or a saveMatrix/restoreMatrix for a couple of reasons. The most obvious is to maintain a coordinate state from one draw() call to the next. I was initially surprised that draw() resets the matrix state though I think I understand the reasoning for it, especially with the possibility of multiple threads. The matrix stack is a wonderful concept. I just wish I could use it across draw() calls.