internal static MapShape Create(MapWay outer, IEnumerable <MapWay> inners, IEnumerable <KeyValuePair <string, string> > tags)
{
var len = outer.Nodes.Count();
var outerEdge = new PrimitiveLine(outer.Nodes.Take(len - 1).Select(n => new PrimitivePoint(n.Coordinate)).ToList());
var innerEdges = inners.Select(inner => new PrimitivePolygon(new PrimitiveLine(inner.Nodes.Take(len - 1).Select(n => new PrimitivePoint(n.Coordinate)).ToList())));
var primitive = new PrimitivePolygon(outerEdge, innerEdges);
return(new MapShape(primitive, tags));
}
internal static MapShape Create(MapWay way, IEnumerable <KeyValuePair <string, string> > tags)
{
if (way.IsClosed)
{
var len = way.Nodes.Count();
var outerEdge = new PrimitiveLine(way.Nodes.Take(len - 1).Select(n => new PrimitivePoint(n.Coordinate)).ToList());
var primitive = new PrimitivePolygon(outerEdge, Enumerable.Empty <PrimitivePolygon>());
return(new MapShape(primitive, tags));
}
else
{
var primitive = new PrimitiveLine(way.Nodes.Select(n => new PrimitivePoint(n.Coordinate)).ToList());
return(new MapShape(primitive, tags));
}
}
/// <summary>
/// Parses a member node from the map.
/// </summary>
/// <returns>The member node.</returns>
private bool TryParseMember(out string role, out MapWay mapWay)
{
if (false == string.Equals("member", this.reader.Name))
{
throw new ArgumentException($"This {reader.Name} is not a member attribute.");
}
long refId = 0;
string refType = null;
role = null;
while (this.reader.MoveToNextAttribute())
{
switch (this.reader.Name)
{
case "type":
refType = this.reader.Value;
break;
case "ref":
refId = long.Parse(this.reader.Value);
break;
case "role":
role = this.reader.Value;
break;
}
}
if (false == string.Equals(refType, "way") ||
false == this.ways.TryGetValue(refId, out mapWay) ||
role == null)
{
role = null;
mapWay = null;
return(false);
}
return(true);
}