SVN commit 553760 by dhanson: CCBUG:129168 copy KstPSDGenerator code into PSDCalculator utility class. comment some of the numerical factors so we know where they come from. next step will be converting KstCSD to use this class, and then KstPSD. A psdcalculator.cpp [License: GPL (v2+)] A psdcalculator.h [License: GPL (v2+)]