Rotations and SCREEN

When plotting contours (defined by an x-y point list) in Matlab
proper, rotation is easy, since the rotate function receives an object
handle as its input. However, when using Psychtoolbox's SCREEN
function to display the same figures, a coordinate list seems to be
the only data input that 'FillPoly' accepts, and I can't seem to find
a Matlab function that will both rotate a coordinate list AND return
the transformed list.

If anyone has any insight into this issue (i.e. knows something about
Matlab/Psychtoolbox that I've overlooked, has designed their own code
to deal with this, or has suggestions for code that I might write),
that would be greatly appreciated.

B. Schnitzer
Coadjutant/Research Assistant
Rutgers University Center for Cognitive Science