internal static bool IfcPathHeadToTail(IfcPath ifcPath)
{
var val = NullableIfcPathHeadToTail(ifcPath);
if (!val.HasValue)
{
throw new ArgumentException("Undetermined value in where clause.");
}
return(val.Value);
}
private static bool?NullableIfcPathHeadToTail(IfcPath APath)
{
// local variables
int N = 0;
bool?P = null;
N = SIZEOF(APath.EdgeList);
for (var i = 2; i <= N; i++)
{
if (!P.HasValue)
{
P = true;
}
P = P.Value && APath.EdgeList[i - 2].EdgeEnd == APath.EdgeList[i - 1].EdgeStart;
}
return(P);
}
