public static XElement ToXElement(OSMRelation relation)
{
XElement output = new XElement("relation");
AddElementDetailsToXElement(relation, output);
foreach (OSMRelationMember member in relation.Members)
{
XElement memberElement = new XElement("member");
if (!string.IsNullOrWhiteSpace(member.Type))
{
memberElement.SetAttributeValue("type", member.Type);
}
if (!string.IsNullOrWhiteSpace(member.Ref))
{
memberElement.SetAttributeValue("ref", member.Ref);
}
if (!string.IsNullOrWhiteSpace(member.Role))
{
memberElement.SetAttributeValue("role", member.Role);
}
output.Add(memberElement);
}
AddElementTagsToXElement(relation, output);
return(output);
}
private void writeRelation(XElement parent, OSMRelation relation)
{
XElement relationElement = relation.ToXElement();
parent.Add(relationElement);
}
/// <summary>
/// Load OSM objects from an OSM XML file
/// </summary>
/// <param name="calculateDistances">Calculate distances between nodes on load</param>
/// <param name="calculateBounds">Calculate way bounding boxes on load</param>
/// <param name="strictMode">Discard node references from ways if the nodes to not exist</param>
/// <returns></returns>
public bool Load(bool calculateDistances = false, bool calculateBounds = false, bool strictMode = false)
{
try
{
clearValues();
XDocument doc = XDocument.Load(File.FullName);
List <XElement> nodeElements = doc.Descendants("node").ToList();
List <XElement> wayElements = doc.Descendants("way").ToList();
List <XElement> relationElements = doc.Descendants("relation").ToList();
double lat, lon;
foreach (XElement nodeElement in nodeElements)
{
OSMNode node = new OSMNode();
node.GetElementDetailsFromXElement(nodeElement);
if (double.TryParse(nodeElement.Attribute("lat").Value, out lat))
{
node.Latitude = lat;
}
if (double.TryParse(nodeElement.Attribute("lon").Value, out lon))
{
node.Longitude = lon;
}
node.Latitude = double.TryParse(nodeElement.Attribute("lat").Value, out lat) ? lat : double.NaN;
node.Longitude = double.TryParse(nodeElement.Attribute("lon").Value, out lon) ? lon : double.NaN;
Bounds.ExtendBounds(node.Latitude, node.Longitude);
NodesById[node.ID] = node;
//WaysForNodes[node.ID] = new List<OSMNodeWayInfo>();
}
foreach (XElement wayElement in wayElements)
{
OSMWay way = new OSMWay();
way.GetElementDetailsFromXElement(wayElement);
if (way.ID == "15200801")
{
var str = "str";
}
List <XElement> nodes = wayElement.Descendants("nd").ToList();
foreach (XElement node in nodes)
{
string refValue = node.Attribute("ref").Value;
if (!string.IsNullOrEmpty(refValue))
{
OSMNode osmNode;
if (!NodesById.TryGetValue(refValue, out osmNode))
{
if (strictMode)
{
continue;
}
else
{
osmNode = new OSMNode()
{
ID = refValue
};
NodesById.Add(refValue, osmNode);
}
}
osmNode.WayReferences.Add(way.ID);
way.NodeReferences.Add(osmNode.ID);
}
}
XElement oneWayTag = wayElement.Descendants("tag").Where(t => t.Attribute("k").Value == "oneway").SingleOrDefault();
if (oneWayTag != null && (oneWayTag.Attribute("v").Value == "yes" || oneWayTag.Attribute("v").Value == "true"))
{
way.Oneway = true;
}
XElement maxSpeedTag = wayElement.Descendants("tag").Where(t => t.Attribute("k").Value == "maxspeed").SingleOrDefault();
if (maxSpeedTag != null)
{
way.MaxSpeed = maxSpeedTag.Attribute("v").Value;
}
WaysById[way.ID] = way;
}
foreach (XElement relationElement in relationElements)
{
OSMRelation relation = new OSMRelation();
relation.GetElementDetailsFromXElement(relationElement);
List <XElement> members = relationElement.Descendants("member").ToList();
foreach (XElement member in members)
{
OSMRelationMember rm = new OSMRelationMember();
rm.Type = member.Attribute("type")?.Value;
rm.Ref = member.Attribute("ref")?.Value;
rm.Role = member.Attribute("role")?.Value;
relation.Members.Add(rm);
}
RelationsById[relation.ID] = relation;
}
if (calculateDistances)
{
CalculateNodeDistances();
}
if (calculateBounds)
{
CalculateWayBounds();
}
return(true);
}
catch (Exception ex)
{
LogHelper.LogException(ex, "Error loading OSM file", true);
return(false);
}
}