50 lines
1.7 KiB
C#
50 lines
1.7 KiB
C#
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using System.Globalization;
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namespace OSMImporter
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{
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public class Coordinates
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{
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public float lat { get; }
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public float lon { get; }
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public Coordinates(float lat, float lon)
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{
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this.lat = lat;
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this.lon = lon;
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}
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private const float decimalCoordsSave = 10000;
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private const ulong offset = 10000000;
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//Latitude maxChars = 7
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//Longitude maxChars = 8
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public ulong GetHash()
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{
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ulong latHash = Convert.ToUInt64((this.lat + 90) * decimalCoordsSave);
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ulong lonHash = Convert.ToUInt64((this.lon + 180) * decimalCoordsSave);
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return latHash * offset + lonHash;
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}
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public ulong GetRegionHash()
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{
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float latRegion = this.lat - this.lat % Importer.regionSize;
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float lonRegion = this.lon - this.lon % Importer.regionSize;
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ulong latHash = Convert.ToUInt64((latRegion + 90) * decimalCoordsSave);
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ulong lonHash = Convert.ToUInt64((lonRegion + 180) * decimalCoordsSave);
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return latHash * offset + lonHash;
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}
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public static Coordinates GetFromHash(ulong hash)
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{
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ulong latHash = (hash / offset) - 90;
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ulong lonHash = (hash % offset) - 180;
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float lat = Convert.ToSingle(latHash) / decimalCoordsSave;
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float lon = Convert.ToSingle(lonHash) / decimalCoordsSave;
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return new Coordinates(lat, lon);
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}
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public override string ToString()
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{
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return string.Format("{0} {1}", this.lat.ToString(CultureInfo.InvariantCulture), this.lon.ToString(CultureInfo.InvariantCulture));
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}
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}
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}
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