/// <summary>
/// Creates a new <see cref="ConversionValue"/> in the format of: X <paramref name="remainingUnit"/> per 1 <paramref name="canceledUnit"/>.
/// </summary>
/// <param name="remainingUnit">The output unit, or the unit that remains after being multiplied with the input <see cref="ConversionValue"/>.</param>
/// <param name="canceledUnit">The unit that will cancel when multiplied with the input <see cref="ConversionValue"/>.</param>
/// <returns>A <see cref="ConversionValue"/> that converts <paramref name="canceledUnit"/> into <paramref name="remainingUnit"/>.</returns>
public ConversionValue GetConversionValue(string canceledUnit, string remainingUnit)
{
var remainingUnitRowIndex = Table.GetColumnData(ConversionType).IndexOf(remainingUnit);
var canceledUnitRowIndex = Table.GetColumnData(ConversionType).IndexOf(canceledUnit);
var conversionRatio = new ConversionValue();
if (remainingUnitRowIndex != -1 &&
canceledUnitRowIndex != -1)
{
var cellData = string.Empty;
var cellValue = 0d;
// Check if the conversionValue coordinates access the lower half of the conversionTable, if so, swap coordinates and invert the value.
if (canceledUnitRowIndex <= remainingUnitRowIndex)
{
cellData = Table.GetColumnData(canceledUnit).ElementAt(remainingUnitRowIndex).ToString();
double.TryParse(cellData, out cellValue);
}
else
{
cellData = Table.GetColumnData(remainingUnit).ElementAt(canceledUnitRowIndex).ToString();
double.TryParse(cellData, out cellValue);
cellValue = 1 / cellValue;
}
conversionRatio = new ConversionValue(cellValue, new[] { remainingUnit }, new[] { canceledUnit }, ConversionType);
}
return(conversionRatio);
}
/// <summary>
/// Multiplies two conversion values together.
/// </summary>
/// <param name="value1">The 'input' unit.</param>
/// <param name="value2">The 'output' unit.</param>
/// <returns>A condensed <see cref="ConversionValue"/> that takes on the simplest version of a combination of both units.</returns>
public static ConversionValue operator *(ConversionValue value1, ConversionValue value2)
{
var conversionResult = new ConversionValue();
conversionResult.Value = (value1?.Value ?? 0d) * (value2?.Value ?? 0d);
conversionResult.UpperUnits.AddRange(value1?.UpperUnits);
conversionResult.UpperUnits.AddRange(value2?.UpperUnits);
conversionResult.LowerUnits.AddRange(value1?.LowerUnits);
conversionResult.LowerUnits.AddRange(value2?.LowerUnits);
conversionResult.Type = value1.Type;
conversionResult.CancelUnits();
return(conversionResult);
}
/// <summary>
/// Compares equality between two conversion values.
/// </summary>
/// <param name="otherValue">Another conversion value to compare against.</param>
/// <returns>The equality between two conversion values.</returns>
public bool Equals(ConversionValue otherValue)
{
bool equalValues = false;
if (otherValue != null)
{
if (Type.Equals(otherValue.Type) &&
Value == otherValue.Value &&
UpperUnits.All(unit => unit?.Equals(otherValue.UpperUnits.ElementAt(UpperUnits.IndexOf(unit))) ?? true) &&
LowerUnits.All(unit => unit?.Equals(otherValue.LowerUnits.ElementAt(LowerUnits.IndexOf(unit))) ?? true))
{
equalValues = true;
}
}
return(equalValues);
}
