/// <summary>
/// Sets the percent of a species in the population group equal to the desired value.
/// It will take shares from all others proportionally.
/// </summary>
/// <param name="spe">The political group we are setting.</param>
/// <param name="percent">The percent we are setting it to.</param>
public void SetSpeciesPercent(Species spe, double percent)
{
if (percent <= 0 || percent > 1)
{
throw new ArgumentOutOfRangeException("Percent must be greater than 0 or less than or equal to 1.");
}
if (!SpeciesBreakdown.Any(x => x.SpeciesId == spe.Id))
{
SpeciesBreakdown.Add(new SpeciesBreakdown
{
ParentId = Id,
Percent = 0,
SpeciesId = spe.Id
});
}
double oldPercent = SpeciesBreakdown
.Single(x => x.SpeciesId == spe.Id)
.Percent;
double add = (oldPercent - percent) / (percent - 1);
SpeciesBreakdown
.Single(x => x.SpeciesId == spe.Id)
.Percent += add;
var newSum = SpePercent();
foreach (var group in SpeciesBreakdown)
{
group.Percent = group.Percent / newSum;
}
}
public void ShiftSpeciesPercent(Species spe, double percent)
{
if (!SpeciesBreakdown.Any(x => x.SpeciesId == spe.Id))
{
SpeciesBreakdown.Add(new SpeciesBreakdown
{
ParentId = Id,
Percent = 0,
SpeciesId = spe.Id
});
}
SpeciesBreakdown.Single(x => x.SpeciesId == spe.Id)
.Percent += percent;
var newSum = SpePercent();
foreach (var part in SpeciesBreakdown)
{
part.Percent = part.Percent / newSum;
}
}
private double SpePercent()
{
return(SpeciesBreakdown.Sum(x => x.Percent));
}