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using System;
#if REAL_T_IS_DOUBLE
using real_t = System.Double;
#else
using real_t = System.Single;
#endif
namespace Godot
{
public static partial class Mathf
{
// Define constants with Decimal precision and cast down to double or float.
public const real_t Tau = (real_t) 6.2831853071795864769252867666M; // 6.2831855f and 6.28318530717959
public const real_t Pi = (real_t) 3.1415926535897932384626433833M; // 3.1415927f and 3.14159265358979
public const real_t Inf = real_t.PositiveInfinity;
public const real_t NaN = real_t.NaN;
private const real_t Deg2RadConst = (real_t) 0.0174532925199432957692369077M; // 0.0174532924f and 0.0174532925199433
private const real_t Rad2DegConst = (real_t) 57.295779513082320876798154814M; // 57.29578f and 57.2957795130823
public static real_t Abs(real_t s)
{
return Math.Abs(s);
}
public static int Abs(int s)
{
return Math.Abs(s);
}
public static real_t Acos(real_t s)
{
return (real_t)Math.Acos(s);
}
public static real_t Asin(real_t s)
{
return (real_t)Math.Asin(s);
}
public static real_t Atan(real_t s)
{
return (real_t)Math.Atan(s);
}
public static real_t Atan2(real_t x, real_t y)
{
return (real_t)Math.Atan2(x, y);
}
public static Vector2 Cartesian2Polar(real_t x, real_t y)
{
return new Vector2(Sqrt(x * x + y * y), Atan2(y, x));
}
public static real_t Ceil(real_t s)
{
return (real_t)Math.Ceiling(s);
}
public static int Clamp(int value, int min, int max)
{
return value < min ? min : value > max ? max : value;
}
public static real_t Clamp(real_t value, real_t min, real_t max)
{
return value < min ? min : value > max ? max : value;
}
public static real_t Cos(real_t s)
{
return (real_t)Math.Cos(s);
}
public static real_t Cosh(real_t s)
{
return (real_t)Math.Cosh(s);
}
public static int Decimals(real_t step)
{
return Decimals((decimal)step);
}
public static int Decimals(decimal step)
{
return BitConverter.GetBytes(decimal.GetBits(step)[3])[2];
}
public static real_t Deg2Rad(real_t deg)
{
return deg * Deg2RadConst;
}
public static real_t Ease(real_t s, real_t curve)
{
if (s < 0f)
{
s = 0f;
}
else if (s > 1.0f)
{
s = 1.0f;
}
if (curve > 0f)
{
if (curve < 1.0f)
{
return 1.0f - Pow(1.0f - s, 1.0f / curve);
}
return Pow(s, curve);
}
if (curve < 0f)
{
if (s < 0.5f)
{
return Pow(s * 2.0f, -curve) * 0.5f;
}
return (1.0f - Pow(1.0f - (s - 0.5f) * 2.0f, -curve)) * 0.5f + 0.5f;
}
return 0f;
}
public static real_t Exp(real_t s)
{
return (real_t)Math.Exp(s);
}
public static real_t Floor(real_t s)
{
return (real_t)Math.Floor(s);
}
public static real_t InverseLerp(real_t from, real_t to, real_t weight)
{
return (weight - from) / (to - from);
}
public static bool IsInf(real_t s)
{
return real_t.IsInfinity(s);
}
public static bool IsNaN(real_t s)
{
return real_t.IsNaN(s);
}
public static real_t Lerp(real_t from, real_t to, real_t weight)
{
return from + (to - from) * weight;
}
public static real_t Log(real_t s)
{
return (real_t)Math.Log(s);
}
public static int Max(int a, int b)
{
return a > b ? a : b;
}
public static real_t Max(real_t a, real_t b)
{
return a > b ? a : b;
}
public static int Min(int a, int b)
{
return a < b ? a : b;
}
public static real_t Min(real_t a, real_t b)
{
return a < b ? a : b;
}
public static int NearestPo2(int value)
{
value--;
value |= value >> 1;
value |= value >> 2;
value |= value >> 4;
value |= value >> 8;
value |= value >> 16;
value++;
return value;
}
public static Vector2 Polar2Cartesian(real_t r, real_t th)
{
return new Vector2(r * Cos(th), r * Sin(th));
}
/// <summary>
/// Performs a canonical Modulus operation, where the output is on the range [0, b).
/// </summary>
public static real_t PosMod(real_t a, real_t b)
{
real_t c = a % b;
if ((c < 0 && b > 0) || (c > 0 && b < 0))
{
c += b;
}
return c;
}
/// <summary>
/// Performs a canonical Modulus operation, where the output is on the range [0, b).
/// </summary>
public static int PosMod(int a, int b)
{
int c = a % b;
if ((c < 0 && b > 0) || (c > 0 && b < 0))
{
c += b;
}
return c;
}
public static real_t Pow(real_t x, real_t y)
{
return (real_t)Math.Pow(x, y);
}
public static real_t Rad2Deg(real_t rad)
{
return rad * Rad2DegConst;
}
public static real_t Round(real_t s)
{
return (real_t)Math.Round(s);
}
public static int Sign(int s)
{
return s < 0 ? -1 : 1;
}
public static real_t Sign(real_t s)
{
return s < 0f ? -1f : 1f;
}
public static real_t Sin(real_t s)
{
return (real_t)Math.Sin(s);
}
public static real_t Sinh(real_t s)
{
return (real_t)Math.Sinh(s);
}
public static real_t Sqrt(real_t s)
{
return (real_t)Math.Sqrt(s);
}
public static real_t Stepify(real_t s, real_t step)
{
if (step != 0f)
{
s = Floor(s / step + 0.5f) * step;
}
return s;
}
public static real_t Tan(real_t s)
{
return (real_t)Math.Tan(s);
}
public static real_t Tanh(real_t s)
{
return (real_t)Math.Tanh(s);
}
public static int Wrap(int value, int min, int max)
{
int rng = max - min;
return rng != 0 ? min + ((value - min) % rng + rng) % rng : min;
}
public static real_t Wrap(real_t value, real_t min, real_t max)
{
real_t rng = max - min;
return !IsEqualApprox(rng, default(real_t)) ? min + ((value - min) % rng + rng) % rng : min;
}
}
}
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