hallidayResnick-2-3 interim commit - start of second major refactor - not working
hallidayResnick-2-3 refactoring - finished initial effort on MultiSegmentSpline
Interim commit - refactoring hallidayResnick-2-3 - not working
Interim commit - refactoring hallidayResnick-2-3 - not working
Initial effort of refactoring spline modeling/drawing code finished.  Animation working.  Need to refactor rest of code.