/// <summary>
/// Returns true if the given tags collection contains tags that could represents an area. waterway=river or waterway=stream could be potential false positives,
/// but can't be confirmed without the actual geometry or the area=* tag set to true or false.
/// </summary>
public bool IsPotentiallyArea(TagsCollectionBase tags)
{
if (tags == null || tags.Count == 0)
{
return(false); // no tags, assume no area.
}
if (tags.IsTrue("area"))
{
return(true);
}
else if (tags.IsFalse("area"))
{
return(false);
}
bool isArea = false;
if (tags.ContainsAnyKey(areaTags))
{
isArea = true;
}
if (tags.TryGetValue("type", out var typeValue))
{
switch (typeValue)
{
// there is a type in this relation.
case "multipolygon":
// this relation is a boundary.
case "boundary": // this relation is a multipolygon.
isArea = true;
break;
}
}
return(isArea);
}