code: public Object getValue(int x) {
      if (x >= width())
        throw new IllegalArgumentException("Index out of scope on axis (" + x + " >= " + width() + ")!");
  
      return m_Min + m_Step*x;
    }
docs: returns the value at the given point in the dimension.
  
  @param x		the x-th point on the axis
  @return		the value at the given position