79 lines
2.3 KiB
C#
79 lines
2.3 KiB
C#
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namespace LeanCloud
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{
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/// <summary>
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/// Represents a distance between two AVGeoPoints.
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/// </summary>
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public struct AVGeoDistance
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{
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private const double EarthMeanRadiusKilometers = 6371.0;
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private const double EarthMeanRadiusMiles = 3958.8;
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/// <summary>
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/// Creates a AVGeoDistance.
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/// </summary>
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/// <param name="radians">The distance in radians.</param>
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public AVGeoDistance(double radians)
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: this()
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{
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Radians = radians;
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}
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/// <summary>
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/// Gets the distance in radians.
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/// </summary>
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public double Radians { get; private set; }
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/// <summary>
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/// Gets the distance in miles.
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/// </summary>
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public double Miles
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{
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get
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{
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return Radians * EarthMeanRadiusMiles;
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}
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}
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/// <summary>
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/// Gets the distance in kilometers.
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/// </summary>
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public double Kilometers
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{
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get
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{
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return Radians * EarthMeanRadiusKilometers;
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}
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}
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/// <summary>
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/// Gets a AVGeoDistance from a number of miles.
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/// </summary>
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/// <param name="miles">The number of miles.</param>
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/// <returns>A AVGeoDistance for the given number of miles.</returns>
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public static AVGeoDistance FromMiles(double miles)
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{
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return new AVGeoDistance(miles / EarthMeanRadiusMiles);
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}
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/// <summary>
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/// Gets a AVGeoDistance from a number of kilometers.
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/// </summary>
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/// <param name="kilometers">The number of kilometers.</param>
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/// <returns>A AVGeoDistance for the given number of kilometers.</returns>
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public static AVGeoDistance FromKilometers(double kilometers)
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{
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return new AVGeoDistance(kilometers / EarthMeanRadiusKilometers);
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}
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/// <summary>
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/// Gets a AVGeoDistance from a number of radians.
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/// </summary>
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/// <param name="radians">The number of radians.</param>
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/// <returns>A AVGeoDistance for the given number of radians.</returns>
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public static AVGeoDistance FromRadians(double radians)
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{
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return new AVGeoDistance(radians);
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}
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}
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}
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