/// <summary>
/// Gets the unit.
/// </summary>
/// <param name="current">The current.</param>
/// <param name="levelFromCurrent">How much levels from the current unit? same factors are ignored</param>
/// <returns></returns>
public measureSystemUnitEntry GetUnit(measureSystemUnitEntry current, Int32 levelFromCurrent)
{
measureUnitLevelChange direction = measureUnitLevelChange.optimum;
measureSystemUnitEntry candidate = current;
measureSystemUnitEntry next = null;
if (levelFromCurrent < 0)
{
direction = measureUnitLevelChange.goLower;
}
if (levelFromCurrent > 0)
{
direction = measureUnitLevelChange.goHigher;
}
if (direction == measureUnitLevelChange.optimum)
{
return(current);
}
levelFromCurrent = Math.Abs(levelFromCurrent);
do
{
next = GetUnit(candidate, direction);
levelFromCurrent--;
if (candidate == next)
{
break;
}
candidate = next;
} while (levelFromCurrent > 0);
return(candidate);
}
/// <summary>
/// Gets next unit in specified direction <see cref="measureUnitLevelChange"/>
/// </summary>
/// <param name="current">The current.</param>
/// <param name="direction">The direction to get next unit</param>
/// <returns>Next defined unit level with different factor</returns>
public measureSystemUnitEntry GetUnit(measureSystemUnitEntry current, measureUnitLevelChange direction)
{
var cindex = units.IndexOf(current);
double cfactor = current.factor;
measureSystemUnitEntry candidate = current;
do
{
if (direction == measureUnitLevelChange.goLower)
{
if (cindex > 0)
{
cindex--;
}
else
{
break;
}
}
else if (direction == measureUnitLevelChange.goHigher)
{
if (cindex < (units.Count - 1))
{
cindex++;
}
else
{
break;
}
}
else
{
break;
}
candidate = units[cindex];
if (candidate == null)
{
break;
}
} while (candidate.factor == cfactor);
return(candidate);
}
/// <summary>
/// Gets the factor distance.
/// </summary>
/// <param name="current">The current.</param>
/// <param name="direction">The direction.</param>
/// <returns></returns>
public double GetFactorDistance(measureSystemUnitEntry current, measureUnitLevelChange direction)
{
measureSystemUnitEntry next = GetUnit(current, direction);
return(current.GetFactorDistance(next));
}
