72 lines
2.1 KiB
C#
72 lines
2.1 KiB
C#
using System.Text.Json;
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using OSMDatastructure;
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using OSMDatastructure.Graph;
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namespace OSMImporter
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{
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public class RegionManager
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{
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private string workingDirectory { get; }
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private readonly Dictionary<ulong, Region> _regions = new();
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public RegionManager(string workingDirectory)
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{
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this.workingDirectory = workingDirectory;
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}
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public Region? GetRegion(Coordinates coordinates)
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{
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return GetRegion(Coordinates.GetRegionHashCode(coordinates));
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}
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public Region? GetRegion(ulong id)
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{
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if(_regions.TryGetValue(id, out Region? value))
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return value;
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else
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{
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Region? loadedRegion = RegionFromId(id);
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if(loadedRegion is not null)
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_regions.Add(loadedRegion!.regionHash, value: loadedRegion);
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return loadedRegion;
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}
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}
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public Region[] GetAllRegions()
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{
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return this._regions.Values.ToArray();
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}
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public OsmNode? GetNode(Coordinates coordinates)
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{
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Region? regionWithNode = GetRegion(coordinates);
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if (regionWithNode is not null)
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return regionWithNode.GetNode(coordinates);
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else return null;
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}
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public OsmNode? GetNode(ulong nodeId, ulong regionId)
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{
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Region? r = GetRegion(regionId);
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return r?.GetNode(nodeId);
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}
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private Region? RegionFromFile(string filePath)
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{
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Region? retRegion = null;
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if (File.Exists(filePath))
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{
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FileStream regionFile = new FileStream(filePath, FileMode.Open);
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retRegion = JsonSerializer.Deserialize<Region>(regionFile, Region.serializerOptions)!;
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regionFile.Dispose();
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}
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return retRegion;
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}
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private Region? RegionFromId(ulong regionId)
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{
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string filePath = Path.Join(workingDirectory, $"{regionId}.region");
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return RegionFromFile(filePath);
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}
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}
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} |