Last Modified
2010-09-08 08:51:48 +0900
Requires

Description

Original Author: David Stokar

      This class perfoms the y coordinats conversion for the bar class.

      There are three cases: 

  1. Bars all go from zero in positive direction
              2. Bars all go from zero to negative direction       
              3. Bars either go from zero to positive or from zero to negative