private void ProcessNode(PrimitiveBlock block, Formats.Pbf.Node node)
{
var latitude = .000000001 * (block.lat_offset + (block.granularity * (double)node.lat));
var longitude = .000000001 * (block.lon_offset + (block.granularity * (double)node.lon));
var elementNode = new Entities.Node();
elementNode.Id = node.id;
elementNode.Coordinate = new GeoCoordinate(latitude, longitude);
if (node.keys.Any())
{
elementNode.Tags = new TagCollection(node.keys.Count);
for (int tagIdx = 0; tagIdx < node.keys.Count; tagIdx++)
{
var keyBytes = block.stringtable.s[(int)node.keys[tagIdx]];
string key = Encoding.UTF8.GetString(keyBytes, 0, keyBytes.Length);
var valueBytes = block.stringtable.s[(int)node.vals[tagIdx]];
string value = Encoding.UTF8.GetString(valueBytes, 0, valueBytes.Length);
//if (elementNode.Tags.ContainsKey(key))
// continue;
elementNode.Tags.Add(key, value);
}
}
_envelop.Extend(elementNode.Coordinate);
_context.Builder.ProcessNode(elementNode, node.keys.Count);
}
/// <summary>
/// Processes primitive block
/// </summary>
private void ProcessPrimitiveBlock(PrimitiveBlock block)
{
if (block.primitivegroup != null)
{
foreach (PrimitiveGroup primitivegroup in block.primitivegroup)
{
if (primitivegroup.dense != null)
{
int keyValsIdx = 0;
long currentId = 0;
long currentLat = 0;
long currentLon = 0;
var count = primitivegroup.dense.id.Count;
var nodes = new List <Formats.Pbf.Node>();
for (int idx = 0; idx < count; idx++)
{
// do the delta decoding stuff.
currentId = currentId + primitivegroup.dense.id[idx];
currentLat = currentLat + primitivegroup.dense.lat[idx];
currentLon = currentLon + primitivegroup.dense.lon[idx];
var node = new Formats.Pbf.Node {
id = currentId, lat = currentLat, lon = currentLon
};
// get the keys/vals.
List <int> keysVals = primitivegroup.dense.keys_vals;
var keysValsCount = keysVals.Count;
node.Initialize();
while (keysValsCount > keyValsIdx && keysVals[keyValsIdx] != 0)
{
node.keys.Add((uint)keysVals[keyValsIdx]);
keyValsIdx++;
node.vals.Add((uint)keysVals[keyValsIdx]);
keyValsIdx++;
}
keyValsIdx++;
nodes.Add(node);
}
primitivegroup.nodes = nodes;
}
}
}
}