public List <Feature> Render(List <Node> nodes)
{
var features = new List <Feature>();
foreach (var node in nodes)
{
// Probably doesn't need to be rendered
if (node.Parent != null &&
!node.IsReferencedByARelation &&
!node.HasInterestingTags)
{
continue;
}
if (!node.Lat.HasValue || !node.Lon.HasValue)
{
continue;
}
if (node.IsBounds || node.IsAGeometryNode)
{
continue;
}
var point = new Point(new GeographicPosition(node.Lat.Value, node.Lon.Value));
var feature = new Feature(point, _featurePropertyBuilder.GetProperties(node), string.Format("{0}/{1}", node.Type, node.Id));
if (node.IsCentrePlaceHolder)
{
feature.Properties["geometry"] = "center";
}
features.Add(feature);
}
return(features);
}
public List <Feature> Render(List <Way> ways)
{
var features = new List <Feature>();
foreach (var way in ways.OrderBy(x => x.Id))
{
if ((way.Nodes == null || way.Nodes.Count == 0) ||
(way.IsAnInnerWithoutAnOuter && !way.HasInterestingTags) ||
((way.HasParent && ((Relation)way.Parent).HasBeenRendered) &&
((way.HasParent && ((Relation)way.Parent).IsSimpleMultiPolygon) ||
(way.HasParent && way.IsGeometryIncomplete) ||
(way.IsMultipolygonOutline && !way.HasInterestingTags) ||
(way.HasParent && !way.HasInterestingTags))))
{
continue;
}
//way.IsGeometryIncomplete = false;
var coordinates = new List <Coordinates>();
foreach (var nodeId in way.Nodes)
{
if (!way.ResolvedNodes.ContainsKey(nodeId))
{
continue;
}
var node = way.ResolvedNodes[nodeId];
coordinates.Add(new Coordinates {
Lat = node.Lat.Value, Lon = node.Lon.Value
});
}
if (coordinates.Count <= 1 && way.Center == null)
{
Debug.WriteLine("Way {0}/{1} ignored because it contains too few nodes", way.Type, way.Id);
continue;
}
IGeometryObject geometry = null;
if (coordinates.Count == 1)
{
geometry = GetPointFor(way.ResolvedNodes.Values.First());
}
else
{
geometry = GetGeometryForCoordinates(coordinates, way);
}
var feature = new Feature(geometry, _featurePropertyBuilder.GetProperties(way));
feature.Id = string.Format("{0}/{1}", way.Type, way.Id);
features.Add(feature);
}
return(features);
}
private Feature ConstructMultiPolygon(Element element, IEnumerable <Way> ways)
{
var multiPolygonGeoemtryType = element is Way ? "way" : "relation";
var validWays = ways.Where(x => x.IsGeometryIncomplete == false).ToList();
var outerRings = _ringOrganiser.AssignToRings(validWays.Where(w => w.RoleInRelation == "outer").ToList());
var innerRings = _ringOrganiser.AssignToRings(validWays.Where(w => w.RoleInRelation == "inner").ToList());
var clusters = new List <Cluster>();
outerRings.ToList().ForEach(x => clusters.Add(new Cluster(new [] { x })));
foreach (var innerRing in innerRings)
{
var matchingOuterIndex = FindOuterIndex(innerRing, outerRings);
if (matchingOuterIndex != -1)
{
clusters[matchingOuterIndex].Add(innerRing);
}
else
{
Debug.WriteLine("Multipolygon{0}/{1} contains an inner ring with no container outer", multiPolygonGeoemtryType, element.Id);
}
}
_clusterCleanser.SanitzeClusters(clusters);
if (clusters.Count == 0 || clusters.All(c => !c.Any()))
{
Debug.WriteLine("Multipolygon{0}/{1} contains no coordinates", multiPolygonGeoemtryType, element.Id);
return(null);
}
IGeometryObject geometryObject = clusters.Count == 1 ? ConvertToPolygon(clusters[0]) : ConvertToMultiPolygon(clusters);
var properties = _featurePropertyBuilder.GetProperties(element);
return(new Feature(geometryObject, properties)
{
Id = string.Format("{0}/{1}", multiPolygonGeoemtryType, element.Id)
});
}