> The run times were ~260 for the version including the assignment, 600 without it, 
> (and ~350 with the traditional code I was using before).
> 
> Any other ideas?

How about converting:

    firstPoint transformBy: rotationPoint

into:

   firstPoint _ firstPoint asFloatPoint.
   Time millisecondsToRun: [1 to: 1000 do: [:i |  
     ignored _ firstPoint transformBy: rotationPoint]].

If your rotationPoint contains floats this should boost it up.

  Andreas
-- 
Linear algebra is your friend - Trigonometry is your enemy.
+===== Andreas Raab ============= (raab at isg.cs.uni-magdeburg.de) =====+
I Department of Simulation and Graphics      Phone: +49 391 671 8065  I
I University of Magdeburg, Germany           Fax:   +49 391 671 1164  I
+=============< http://isgwww.cs.uni-magdeburg.de/~raab >=============+