using System;
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namespace Microsoft
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{
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/// <summary>
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/// Math类扩展
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/// Copyright (c) JajaSoft
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/// </summary>
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public static class MathEx
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{
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#region 字段
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/// <summary>
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/// E
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/// </summary>
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public const float E = 2.718282f;
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/// <summary>
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/// Log10E
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/// </summary>
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public const float Log10E = 0.4342945f;
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/// <summary>
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/// Log2E
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/// </summary>
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public const float Log2E = 1.442695f;
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/// <summary>
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/// Pi
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/// </summary>
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public const float Pi = 3.141593f;
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/// <summary>
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/// Pi/2
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/// </summary>
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public const float PiOver2 = 1.570796f;
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/// <summary>
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/// Pi/4
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/// </summary>
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public const float PiOver4 = 0.7853982f;
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/// <summary>
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/// Pi*2
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/// </summary>
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public const float TwoPi = 6.283185f;
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/// <summary>
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/// Double类型的 180d / Math.PI
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/// </summary>
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public const double Double180OverPi = 180d / Math.PI;
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/// <summary>
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/// Double类型的 Math.PI / 180d
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/// </summary>
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public const double DoublePiOver180 = Math.PI / 180d;
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/// <summary>
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/// Single类型的 180d / Math.PI
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/// </summary>
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public const float Single180OverPi = (float)Double180OverPi;
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/// <summary>
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/// Single类型的 Math.PI / 180d
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/// </summary>
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public const float SinglePiOver180 = (float)DoublePiOver180;
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#endregion
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#region 方法
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static Byte Clamp(Byte value, Byte min, Byte max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static Decimal Clamp(Decimal value, Decimal min, Decimal max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static Double Clamp(Double value, Double min, Double max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static Int16 Clamp(Int16 value, Int16 min, Int16 max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static Int32 Clamp(Int32 value, Int32 min, Int32 max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static Int64 Clamp(Int64 value, Int64 min, Int64 max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static SByte Clamp(SByte value, SByte min, SByte max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static Single Clamp(Single value, Single min, Single max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static UInt16 Clamp(UInt16 value, UInt16 min, UInt16 max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static UInt32 Clamp(UInt32 value, UInt32 min, UInt32 max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 返回指定范围内的限定值
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/// </summary>
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/// <param name="value">值</param>
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/// <param name="min">最小值</param>
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/// <param name="max">最大值</param>
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/// <returns>限定值</returns>
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public static UInt64 Clamp(UInt64 value, UInt64 min, UInt64 max)
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{
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value = (value > max) ? max : value;
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value = (value < min) ? min : value;
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return value;
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}
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/// <summary>
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/// 弧度转换为角度
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/// </summary>
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/// <param name="radians">弧度</param>
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/// <returns>角度</returns>
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public static Double ToDegrees(Double radians)
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{
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return (radians * Double180OverPi);
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}
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/// <summary>
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/// 弧度转换为角度
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/// </summary>
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/// <param name="radians">弧度</param>
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/// <returns>角度</returns>
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public static Single ToDegrees(Single radians)
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{
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return (radians * Single180OverPi);
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}
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/// <summary>
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/// 角度转换为弧度
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/// </summary>
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/// <param name="degrees">角度</param>
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/// <returns>弧度</returns>
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public static Double ToRadians(Double degrees)
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{
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return (degrees * DoublePiOver180);
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}
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/// <summary>
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/// 角度转换为弧度
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/// </summary>
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/// <param name="degrees">角度</param>
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/// <returns>弧度</returns>
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public static Single ToRadians(Single degrees)
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{
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return (degrees * SinglePiOver180);
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}
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#endregion
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}
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}
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