public void Add(OsmRelation relation, int typeId, IReadOnlyList <RelationItemInfo> itemInfos, BoundingRect rect)
{
if (relation == null)
{
throw new ArgumentNullException(nameof(relation));
}
if (itemInfos == null)
{
throw new ArgumentNullException(nameof(itemInfos));
}
if (rect == null)
{
throw new ArgumentNullException(nameof(rect));
}
startPositions.Add(new RelationLocation
{
Id = relation.Id,
Offset = stream.Position
});
idWriter.WriteIncrementOnly((ulong)relation.Id);
writer.Write7BitEncodedInt((ulong)typeId);
rect.WriteTo(writer);
writer.Write7BitEncodedInt((ulong)relation.Items.Count);
memberIdWriter.Reset();
memberMidLatWriter.Reset();
memberMidLonWriter.Reset();
for (var index = 0; index < relation.Items.Count; index++)
{
var member = relation.Items[index];
writer.Write((byte)member.MemberType);
memberIdWriter.WriteZigZag(member.Id);
writer.Write7BitEncodedInt(GetRoleId(member.Role));
var info = itemInfos[index];
memberMidLatWriter.WriteZigZag(info.MidLat);
memberMidLonWriter.WriteZigZag(info.MidLon);
}
}
private void WriteWayData(SWay way)
{
idWriter.WriteIncrementOnly((ulong)way.Id);
var nodes = way.Nodes;
waysWriter.Write7BitEncodedInt((ulong)nodes.Count);
nodeIdWriter.Reset();
latWriter.Reset();
lonWriter.Reset();
foreach (var node in nodes)
{
nodeIdWriter.WriteZigZag(node.Id);
latWriter.WriteZigZag(node.Lat);
lonWriter.WriteZigZag(node.Lon);
}
}
