/// <summary>
/// Encodes an OsmSharp-node into a PBF-node.
/// </summary>
public static OsmSharp.IO.PBF.Node EncodeNode(PrimitiveBlock block, Dictionary <string, int> reverseStringTable,
OsmSharp.IO.PBF.Node pbfNode, OsmSharp.Node node)
{
pbfNode.id = node.Id.Value;
pbfNode.info = new Info();
pbfNode.info.version = 0;
if (node.ChangeSetId.HasValue)
{
pbfNode.info.changeset = node.ChangeSetId.Value;
}
else
{
pbfNode.info.changeset = 0;
}
if (node.TimeStamp.HasValue)
{
pbfNode.info.timestamp = Encoder.EncodeTimestamp(node.TimeStamp.Value, block.date_granularity);
}
else
{
pbfNode.info.timestamp = 0;
}
if (node.UserId.HasValue)
{
pbfNode.info.uid = (int)node.UserId.Value;
}
else
{
pbfNode.info.uid = 0;
}
pbfNode.info.user_sid = Encoder.EncodeString(block, reverseStringTable, node.UserName);
if (node.Version.HasValue)
{
pbfNode.info.version = (int)node.Version.Value;
}
else
{
pbfNode.info.version = 0;
}
pbfNode.lat = Encoder.EncodeLatLon(node.Latitude.Value, block.lat_offset, block.granularity);
pbfNode.lon = Encoder.EncodeLatLon(node.Longitude.Value, block.lon_offset, block.granularity);
if (node.Tags != null)
{
foreach (var tag in node.Tags)
{
pbfNode.keys.Add((uint)Encoder.EncodeString(block, reverseStringTable, tag.Key));
pbfNode.vals.Add((uint)Encoder.EncodeString(block, reverseStringTable, tag.Value));
}
}
else
{
pbfNode.keys.Clear();
pbfNode.vals.Clear();
}
return(pbfNode);
}
private static void EncodeDenseNode(PrimitiveBlock block, Dictionary <string, int> reverseStringTable, DenseNodes groupDense, OsmSharp.Node current, OsmSharp.Node previous)
{
groupDense.id.Add(current.Id.Value - previous.Id.Value);
var currentLat = Encoder.EncodeLatLon(current.Latitude.Value, block.lat_offset, block.granularity);
var currentLon = Encoder.EncodeLatLon(current.Longitude.Value, block.lon_offset, block.granularity);
var previousLat = Encoder.EncodeLatLon(previous.Latitude.Value, block.lat_offset, block.granularity);
var previousLon = Encoder.EncodeLatLon(previous.Longitude.Value, block.lon_offset, block.granularity);
// Note that the offsets are actually cancelled out by the subtraction below
// LatDiff equals (current.Latitude - previous.Latitude) * 100000000 / granularity
var latDiff = currentLat - previousLat;
var lonDiff = currentLon - previousLon;
groupDense.lat.Add(latDiff);
groupDense.lon.Add(lonDiff);
if (current.Tags != null)
{
foreach (var nodeTag in current.Tags)
{
groupDense.keys_vals.Add(Encoder.EncodeString(block, reverseStringTable, nodeTag.Key));
groupDense.keys_vals.Add(Encoder.EncodeString(block, reverseStringTable, nodeTag.Value));
}
groupDense.keys_vals.Add(0);
}
if (groupDense.denseinfo != null)
{
groupDense.denseinfo.changeset.Add(current.ChangeSetId.Value - previous.ChangeSetId.Value);
var currentTimeStamp = Encoder.EncodeTimestamp(current.TimeStamp.Value, block.date_granularity);
var previousTimeStamp = previous.TimeStamp == null
? 0
: Encoder.EncodeTimestamp(previous.TimeStamp.Value, block.date_granularity);
groupDense.denseinfo.timestamp.Add(currentTimeStamp - previousTimeStamp);
groupDense.denseinfo.uid.Add((int)(current.UserId.Value - previous.UserId.Value));
groupDense.denseinfo.version.Add((int)(current.Version.Value - previous.Version.Value));
var previousUserNameId = previous.UserName == null
? 0
: Encoder.EncodeString(block, reverseStringTable, previous.UserName);
var currentUserNameId = Encoder.EncodeString(block, reverseStringTable, current.UserName);
groupDense.denseinfo.user_sid.Add(currentUserNameId - previousUserNameId);
}
}