public static int ReadBinary(byte[] buf, int ofs, out OsmNode node)
{
int p = 0;
ulong tmp;
p += ProtoBuf.ReadVarInt(buf, ofs + p, out tmp);
long id = (long)tmp;
p += ProtoBuf.ReadVarInt(buf, ofs + p, out tmp);
int latCode = ProtoBuf.SignedInt32((uint)tmp);
p += ProtoBuf.ReadVarInt(buf, ofs + p, out tmp);
int lonCode = ProtoBuf.SignedInt32((uint)tmp);
p += ProtoBuf.ReadVarInt(buf, ofs + p, out tmp);
var values = tmp == 0 ? emptyValues : new KeyValuePair <string, string> [tmp];
for (int i = 0; i < values.Length; i++)
{
string key, val;
p += ProtoBuf.ReadString(buf, ofs + p, out key);
p += ProtoBuf.ReadString(buf, ofs + p, out val);
values[i] = new KeyValuePair <string, string>(key, val);
}
node = new OsmNode(id, latCode, lonCode, values);
return(p);
}
/// <summary>
/// Konstruktor
/// </summary>
/// <param name="node">OSM-Knoten mit der entsprechenden GPS-Position</param>
public GpsPos(OsmNode node)
{
posX = (uint)node.lonCode + 1800000000u;
posY = 900000000u - (uint)node.latCode;
}
/// <summary>
/// liest mehrere OSM-Knoten ein und gibt die Ergebnisse in entsprechender Reihenfolge zurück
/// </summary>
/// <param name="nodeIds">Knoten-IDs, welche abgefragt werden sollen</param>
/// <returns>Array mit den abgefragten Knoten</returns>
public OsmNode[] ReadNodes(params long[] nodeIds)
{
var result = new OsmNode[nodeIds.Length];
var searchNodes = Enumerable.Range(0, nodeIds.Length).Select(i => new KeyValuePair <long, int>(nodeIds[i], i)).ToArray(nodeIds.Length);
Array.Sort(searchNodes, (x, y) => x.Key.CompareTo(y.Key));
var needBlobs = new List <OsmBlob>();
var lastBlob = wayIndex[0];
foreach (var nodeId in searchNodes.Select(x => x.Key))
{
if (nodeId > lastBlob.maxNodeId || nodeId < lastBlob.minNodeId)
{
lastBlob = nodeIndex.BinarySearchSingle(x => nodeId >= x.minNodeId && nodeId <= x.maxNodeId ? 0L : x.minNodeId - nodeId);
needBlobs.Add(lastBlob);
}
}
var blobDecoder = BlobSmtDecoder(needBlobs, (blob, buf) =>
{
try
{
MemArray <OsmNode> tmp;
int len = PbfFast.DecodePrimitiveBlock(buf, 0, blob, out tmp);
if (len != blob.rawSize)
{
throw new PbfParseException();
}
return(tmp);
}
catch
{
return(null);
}
}).GetEnumerator();
MemArray <OsmNode> nodes = null;
var tmpNodes = new List <MemArray <OsmNode> >();
for (int w = 0; w < searchNodes.Length; w++)
{
long nodeId = searchNodes[w].Key;
if (nodes == null || nodes[nodes.Length - 1].id < nodeId)
{
if (nodes != null)
{
nodes.Dispose();
}
nodes = null;
for (int i = 0; i < tmpNodes.Count; i++)
{
if (nodeId >= tmpNodes[i].First().id&& nodeId <= tmpNodes[i].Last().id)
{
nodes = tmpNodes[i];
tmpNodes.RemoveAt(i);
break;
}
}
while (nodes == null)
{
blobDecoder.MoveNext();
nodes = blobDecoder.Current;
if (nodeId < nodes.First().id || nodeId > nodes.Last().id)
{
tmpNodes.Add(nodes);
nodes = null;
}
}
Console.WriteLine("read nodes: {0:N0} / {1:N0}", w + 1, searchNodes.Length);
}
result[searchNodes[w].Value] = nodes.BinarySearchSingle(x => x.id - nodeId);
}
if (nodes != null)
{
nodes.Dispose();
}
return(result);
}