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Color类。

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liteng 2018-12-09 12:24:50 +08:00
parent 9b5584f970
commit 28afbba0ca
2 changed files with 443 additions and 602 deletions
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1019
THREE/Math/Color.cs
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26
THREE/Math/Math.cs
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@ -48,7 +48,7 @@ namespace THREE
return uuid.ToUpper();
}
public double Clamp(double value, double min, double max)
public static double Clamp(double value, double min, double max)
{
return _Math.Max(min, _Math.Min(max, value));
}
@ -56,27 +56,27 @@ namespace THREE
// compute euclidian modulo of m % n
// https://en.wikipedia.org/wiki/Modulo_operation
public double EuclideanModulo(double n, double m)
public static double EuclideanModulo(double n, double m)
{
return ((n % m) + m) % m;
}
// Linear mapping from range <a1, a2> to range <b1, b2>
public double MapLinear(double x, double a1, double a2, double b1, double b2)
public static double MapLinear(double x, double a1, double a2, double b1, double b2)
{
return b1 + (x - a1) * (b2 - b1) / (a2 - a1);
}
// https://en.wikipedia.org/wiki/Linear_interpolation
public double Lerp(double x, double y, double t)
public static double Lerp(double x, double y, double t)
{
return (1 - t) * x + t * y;
}
// http://en.wikipedia.org/wiki/Smoothstep
public double Smoothstep(double x, double min, double max)
public static double Smoothstep(double x, double min, double max)
{
if (x <= min) return 0;
if (x >= max) return 1;
@ -97,47 +97,47 @@ namespace THREE
}
// Random integer from <low, high> interval
public double RandInt(double low, double high)
public static double RandInt(double low, double high)
{
var ran = new Random();
return low + _Math.Floor(ran.NextDouble() * (high - low + 1));
}
// Random float from <low, high> interval
public double RandFloat(double low, double high)
public static double RandFloat(double low, double high)
{
var ran = new Random();
return low + ran.NextDouble() * (high - low);
}
// Random float from <-range/2, range/2> interval
public double RandFloatSpread(double range)
public static double RandFloatSpread(double range)
{
var ran = new Random();
return range * (0.5 - ran.NextDouble());
}
public double DegToRad(double degrees)
public static double DegToRad(double degrees)
{
return degrees * Math.DEG2RAD;
}
public double RadToDeg(double radians)
public static double RadToDeg(double radians)
{
return radians * Math.RAD2DEG;
}
public bool IsPowerOfTwo(int value)
public static bool IsPowerOfTwo(int value)
{
return (value & (value - 1)) == 0 && value != 0;
}
public double CeilPowerOfTwo(double value)
public static double CeilPowerOfTwo(double value)
{
return _Math.Pow(2, _Math.Ceiling(_Math.Log(value) / _Math.Log(2)));
}
public double FloorPowerOfTwo(double value)
public static double FloorPowerOfTwo(double value)
{
return _Math.Pow(2, _Math.Floor(_Math.Log(value) / _Math.Log(2)));
}