// <relation id = "1084743" version="2" timestamp="2015-05-30T03:46:23Z" changeset="31576221" uid="2311536" user="******">
// <member type = "way" ref="69127471" role="outer"/>
// <member type = "way" ref="69127440" role="inner"/>
// <tag k = "building" v="yes"/>
// <tag k = "type" v="multipolygon"/>
//</relation>
private void HandlRelationRead(XmlReader reader)
{
var osmRelation = new OSMRelation();
osmRelation.ID = Convert.ToInt64(reader.GetAttribute("id"));
var doc = new System.Xml.XmlDocument();
XmlNode node = doc.ReadNode(reader);
foreach (XmlAttribute attr in node.Attributes)
{
osmRelation.InnerAttributes.Add(attr.Name, attr.Value);
}
if (node.HasChildNodes)
{
var members = node.SelectNodes("member");
foreach (XmlNode member in members)
{
var relationType = member.Attributes["type"].Value;
var id = Convert.ToInt64(member.Attributes["ref"].Value);
var role = member.Attributes["role"].Value;
var osmMember = new RelationMember();
osmMember.MemberType = relationType;
osmMember.Ref = id;
osmMember.Role = role;
osmRelation.Members.Add(osmMember);
if (relationType == "way")
{
if (osmWays.ContainsKey(id))
{
osmRelation.OSMWays.Add(osmWays[id]);
}
}
}
var tags = node.SelectNodes("tag");
foreach (XmlNode tag in tags)
{
var key = tag.Attributes["k"].Value;
var val = tag.Attributes["v"].Value;
osmRelation.Tags.Add(key, val);
}
}
var bbox = new BBox();
foreach (var way in osmRelation.OSMWays)
{
bbox = SpatialUtilities.BboxUnion(bbox, way.Bbox);
}
osmRelation.Bbox = bbox;
osmRelation.SetCenter();
osmRelations.Add(osmRelation.ID, osmRelation);
}
public BBox OuterBbox()
{
var bbox = new BBox();
foreach (var node in osmNodes.Values)
{
bbox = SpatialUtilities.BboxUnion(bbox, node);
}
return(bbox);
}
public static bool BBoxIntersects(BBox bbox1, BBox bbox2)
{
if ((bbox1.MaxLat < bbox2.MinLat) ||
(bbox1.MaxLon < bbox2.MinLon) ||
(bbox1.MinLon > bbox2.MaxLon) ||
(bbox1.MinLat > bbox2.MaxLat))
{
return(false);
}
return(true);
}
public static bool BBoxContains(BBox bbox, OSMNode osmNode)
{
if ((osmNode.Lat >= bbox.MinLat) &&
(osmNode.Lon >= bbox.MinLon) &&
(osmNode.Lat < bbox.MaxLat) &&
(osmNode.Lon < bbox.MaxLon))
{
return(true);
}
return(false);
}
/// <summary>
/// Calculate union of area covered by both boxes,
/// including any area between boxes
/// </summary>
/// <param name="bbox1"></param>
/// <param name="bbox2"></param>
/// <returns></returns>
public static BBox BboxUnion(BBox bbox1, BBox bbox2)
{
var bbox = new BBox();
bbox.MinLat = bbox1.MinLat < bbox2.MinLat ? bbox1.MinLat : bbox2.MinLat;
bbox.MinLon = bbox1.MinLon < bbox2.MinLon ? bbox1.MinLon : bbox2.MinLon;
bbox.MaxLat = bbox1.MaxLat > bbox2.MaxLat ? bbox1.MaxLat : bbox2.MaxLat;
bbox.MaxLon = bbox1.MaxLon > bbox2.MaxLon ? bbox1.MaxLon : bbox2.MaxLon;
return(bbox);
}
/// <summary>
/// set or expand box if node not already contained
/// </summary>
/// <param name="bbox1"></param>
/// <param name="node"></param>
/// <returns></returns>
public static BBox BboxUnion(BBox bbox1, OSMNode node)
{
var bbox = new BBox();
bbox.MinLat = bbox1.MinLat < node.Lat ? bbox1.MinLat : node.Lat;
bbox.MinLon = bbox1.MinLon < node.Lon ? bbox1.MinLon : node.Lon;
bbox.MaxLat = bbox1.MaxLat > node.Lat ? bbox1.MaxLat : node.Lat;
bbox.MaxLon = bbox1.MaxLon > node.Lon ? bbox1.MaxLon : node.Lon;
return(bbox);
}
public OSMWay() : base()
{
Bbox = new BBox();
NodeList = new List <OSMNode>();
}
