/***************************************************/
private static FamilyInstance FamilyInstance_WorkPlaneBased(Document document, FamilySymbol familySymbol, Curve curve, Element host, RevitSettings settings)
{
Line line = curve as Line;
if (line == null)
{
familySymbol.LinearOnlyError();
return(null);
}
Line location;
Reference reference;
if (host != null)
{
location = host.ClosestLineOn(line, out reference);
}
else
{
location = line;
Level level = document.LevelBelow(line, settings);
if (level == null)
{
return(null);
}
reference = level.GetPlaneReference();
}
if (location == null || reference == null)
{
return(null);
}
FamilyInstance familyInstance = document.Create.NewFamilyInstance(reference, location, familySymbol);
if (familyInstance == null)
{
return(null);
}
if (host == null)
{
familyInstance.CurveBasedNonHostedWarning();
}
else
{
familyInstance.CurveBasedHostedWarning();
}
return(familyInstance);
}