private static object GetAttr(Tile.Value value)
{
object res = null;
if (value.HasBoolValue)
{
res = value.BoolValue;
}
else if (value.HasDoubleValue)
{
res = value.DoubleValue;
}
else if (value.HasFloatValue)
{
res = value.FloatValue;
}
else if (value.HasIntValue)
{
res = value.IntValue;
}
else if (value.HasStringValue)
{
res = value.StringValue;
}
else if (value.HasUIntValue)
{
res = value.HasUIntValue;
}
return res;
}
public static Feature Parse(Tile.Feature feature, List<string> keys, List<Tile.Value> values, int x, int y, int z, uint extent, bool convertToGeographicPosition)
{
Feature result = null;
var geom = GeometryParser.ParseGeometry(feature.Geometry, feature.Type);
var id = feature.Id;
var positions= convertToGeographicPosition?
geom.Select(p => p.ToGeographicPosition(x,y,z,extent)).ToList():
geom.Select(p => new GeographicPosition(p.Latitude, p.Longitude)).ToList();
var coordinates = positions.ToList<IPosition>();
if (feature.Type == Tile.GeomType.Polygon)
{
if (coordinates.Count > 3)
{
var polygon = new Polygon(new List<LineString> {new LineString(coordinates)});
result = new Feature(polygon);
}
}
else if (feature.Type == Tile.GeomType.LineString)
{
var ls = new LineString(coordinates);
result = new Feature(ls);
}
else if (feature.Type == Tile.GeomType.Point)
{
var pt = new Point(coordinates[0]);
result = new Feature(pt);
}
if (result != null)
{
result.Id = id.ToString(CultureInfo.InvariantCulture);
var attributes = AttributesParser.Parse(keys, values, feature.Tags);
foreach (var item in attributes)
{
result.Properties.Add(item.Key, item.Value);
}
}
return result;
}