public static string CalculateRelationship(Individual rootPerson, Individual indToFind)
{
if (rootPerson.Equals(indToFind))
{
return("root person");
}
CommonAncestor commonAncestor = indToFind.CommonAncestor;
long rootDistance = (long)(BigInteger.Log(commonAncestor.Ind.Ahnentafel) / Math.Log(2.0));
long toFindDistance = commonAncestor.Distance;
// DIRECT DESCENDANT - PARENT
if (toFindDistance == 0)
{
string relation = indToFind.IsMale ? "father" : "mother";
indToFind.RelationSort = rootDistance;
return((commonAncestor.Step ? "step " : string.Empty) + AggrandiseRelationship(relation, rootDistance, 0));
}
// DIRECT DESCENDANT - CHILD
if (rootDistance == 0)
{
string relation = indToFind.IsMale ? "son" : "daughter";
indToFind.RelationSort = -toFindDistance;
indToFind.RelationType = Individual.DESCENDANT;
return((commonAncestor.Step ? "step " : string.Empty) + AggrandiseRelationship(relation, toFindDistance, 0));
}
// EQUAL DISTANCE - SIBLINGS / PERFECT COUSINS
if (rootDistance == toFindDistance)
{
switch (toFindDistance)
{
case 1:
return((commonAncestor.Step ? "half " : string.Empty) + (indToFind.IsMale ? "brother" : "sister"));
case 2:
return("cousin");
default:
return($"{OrdinalSuffix(toFindDistance - 1)} cousin");
}
}
// AUNT / UNCLE
if (toFindDistance == 1)
{
string relation = indToFind.IsMale ? "uncle" : "aunt";
return(AggrandiseRelationship(relation, rootDistance, 1));
}
// NEPHEW / NIECE
if (rootDistance == 1)
{
string relation = indToFind.IsMale ? "nephew" : "niece";
return(AggrandiseRelationship(relation, toFindDistance, 1));
}
// COUSINS, GENERATIONALLY REMOVED
long cousinOrdinal = Math.Min(rootDistance, toFindDistance) - 1;
long cousinGenerations = Math.Abs(rootDistance - toFindDistance);
return($"{OrdinalSuffix(cousinOrdinal)} cousin {FormatPlural(cousinGenerations)} removed");
}
public void SetChildrenCommonRelation(Individual parent, CommonAncestor commonAncestor)
{
foreach (Individual child in Children)
{
if (child.CommonAncestor == null || child.CommonAncestor.distance > commonAncestor.distance + 1)
{
child.CommonAncestor = new CommonAncestor(commonAncestor.ind, commonAncestor.distance + 1, !child.IsNaturalChildOf(parent) || commonAncestor.step);
}
}
}
public void SetChildrenCommonRelation(Individual parent, CommonAncestor commonAncestor)
{
if (parent is null || commonAncestor is null)
{
return;
}
foreach (var child in Children)
{
if (child.CommonAncestor is null || child.CommonAncestor.Distance > commonAncestor.Distance + 1)
{
child.CommonAncestor = new CommonAncestor(commonAncestor.Ind, commonAncestor.Distance + 1, !child.IsNaturalChildOf(parent) || commonAncestor.Step);
}
}
}