private void CreateRoads(XDocument doc, Canvas canvas)
{
foreach (var way in doc.Root.Elements("way"))
{
bool isRoad = false;
foreach (var tag in way.Elements("tag"))
{
if (tag.Attribute("k").Value == "highway")
{
isRoad = true;
}
if (tag.Attribute("k").Value == "aeroway")
{
isRoad = true;
}
}
if (isRoad)
{
List <Point> points = new List <Point>();
foreach (var nd in way.Elements("nd"))
{
Point point = NodePosition(long.Parse(nd.Attribute("ref").Value));
point = new Point(canvas.Width * 0.5 - point.X, canvas.Height * 0.5 + point.Y);
points.Add(point);
}
var road = OsmUIElements.CreateRoad(points, way);
canvas.Children.Add(road);
}
}
}
private void CreateAreas(XDocument doc, Canvas canvas)
{
string[] areaStrings = { "area", "leisure" };
foreach (var way in doc.Root.Elements("way"))
{
bool isArea = false;
foreach (var tag in way.Elements("tag"))
{
if (areaStrings.Contains(tag.Attribute("k").Value))
{
isArea = true;
}
}
if (isArea)
{
List <Point> points = new List <Point>();
foreach (var nd in way.Elements("nd"))
{
Point point = NodePosition(long.Parse(nd.Attribute("ref").Value));
point = new Point(canvas.Width * 0.5 - point.X, canvas.Height * 0.5 + point.Y);
points.Add(point);
}
var area = OsmUIElements.CreateArea(points, way);
canvas.Children.Add(area);
}
}
}
private void CreateBuildings(XDocument doc, Canvas canvas)
{
List <long> outerOuterBuildingRelations = new List <long>();
foreach (var relation in doc.Root.Elements("relation"))
{
foreach (var tag in relation.Elements("tag"))
{
if (tag.Attribute("k").Value == "building" && tag.Attribute("v").Value == "yes")
{
foreach (var member in relation.Elements("member"))
{
if (member.Attribute("type").Value == "way" && member.Attribute("role").Value == "outer")
{
outerOuterBuildingRelations.Add(long.Parse(member.Attribute("ref").Value));
}
}
}
}
}
foreach (var way in doc.Root.Elements("way"))
{
bool isBuilding = false;
foreach (var tag in way.Elements("tag"))
{
if (tag.Attribute("k").Value == "building")
{
isBuilding = true;
}
if (tag.Attribute("k").Value == "building:part")
{
isBuilding = true;
}
}
if (isBuilding || outerOuterBuildingRelations.Contains(long.Parse(way.Attribute("id").Value)))
{
List <Point> points = new List <Point>();
foreach (var nd in way.Elements("nd"))
{
Point point = NodePosition(long.Parse(nd.Attribute("ref").Value));
point = new Point(canvas.Width * 0.5 - point.X, canvas.Height * 0.5 + point.Y);
points.Add(point);
}
var building = OsmUIElements.CreateBuilding(points, way);
if (building != null)
{
canvas.Children.Add(building);
}
}
}
}
