using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;
using UnityEngine;

namespace kt.Utility
{
	public static class MathUtility
	{
		public static float VolumeToDecibel(float volume)
		{
			return 20f * Mathf.Log10(Mathf.Clamp(volume, 0.0001f, 1f));
		}

		public static float DecibelToVolume(float db)
		{
			float num = Mathf.Pow(10f, Mathf.Clamp(db, -80f, 0f) / 20f);
			return (num > 0.0001f) ? num : 0f;
		}

		public static float MillisecondToSecond(int millisecond)
		{
			return (float)millisecond / 1000f;
		}

		public static int SecondToMillisecond(float second)
		{
			return Mathf.FloorToInt(second * 1000f);
		}

		public static int RoundToDigits(int num, int maxDigits)
		{
			int[] array = new int[]
			{
				0,
				9,
				99,
				999,
				9999,
				99999,
				999999,
				9999999,
				99999999,
				999999999
			};
			return Mathf.Clamp(num, 0, array[(array.Length >= maxDigits) ? 0 : maxDigits]);
		}

		public static bool Approximately(Vector2 objA, Vector2 objB)
		{
			return Mathf.Approximately(objA.x, objB.x) && Mathf.Approximately(objA.y, objB.y);
		}

		public static bool Approximately(Vector3 objA, Vector3 objB)
		{
			return Mathf.Approximately(objA.x, objB.x) && Mathf.Approximately(objA.y, objB.y) && Mathf.Approximately(objA.z, objB.z);
		}

		public static float Normalize(float val, float valmin, float valmax, float min = 0f, float max = 1f)
		{
			return (val - valmin) / (valmax - valmin) * (max - min) + min;
		}

		public static double Normalize(double val, double valmin, double valmax, double min = 0.0, double max = 1.0)
		{
			return (val - valmin) / (valmax - valmin) * (max - min) + min;
		}

		public static float Sin01(float a, float b, bool is_reverse = false, bool is_repeat = false)
		{
			return MathUtility.Sin01(a / b, is_reverse, is_repeat);
		}

		public static float Sin01(float t, bool is_reverse = false, bool is_repeat = false)
		{
			if (!is_repeat)
			{
				t = Mathf.Clamp01(t);
			}
			if (!is_reverse)
			{
				return Mathf.Abs(Mathf.Sin(t * 90f * 0.017453292f));
			}
			return 1f - Mathf.Abs(Mathf.Sin(t * 90f * 0.017453292f));
		}

		public static Vector3 Bezier(Vector3 p0, Vector3 p1, Vector3 c, float t)
		{
			Vector3 a = Vector3.Lerp(p0, c, t);
			Vector3 b = Vector3.Lerp(c, p1, t);
			return Vector3.Lerp(a, b, t);
		}

		public static Vector3 Hermite(Vector3 p0, Vector3 p1, Vector3 v0, Vector3 v1, float t)
		{
			Vector3 a = 2f * p0 + -2f * p1 + v0 + v1;
			Vector3 a2 = -3f * p0 + 3f * p1 + -2f * v0 - v1;
			float num = t * t;
			float d = num * t;
			return a * d + a2 * num + v0 * t + p0;
		}

		public static Vector3 Catmul(List<Vector3> point_list, float t)
		{
			if (point_list.Count == 0)
			{
				return Vector3.zero;
			}
			if (point_list.Count == 1)
			{
				return point_list[0];
			}
			float num = (float)(point_list.Count - 1) * t;
			int num2 = Mathf.FloorToInt(num);
			float t2 = num - (float)num2;
			if (num2 >= point_list.Count - 1)
			{
				num2 = point_list.Count - 2;
				t2 = 1f;
			}
			Vector3 p = point_list[num2];
			Vector3 p2 = point_list[num2 + 1];
			Vector3 v = Vector3.zero;
			if (num2 > 0)
			{
				v = 0.5f * (point_list[num2 + 1] - point_list[num2 - 1]);
			}
			else
			{
				v = point_list[num2 + 1] - point_list[num2];
			}
			Vector3 v2 = Vector3.zero;
			if (num2 < point_list.Count - 2)
			{
				v2 = 0.5f * (point_list[num2 + 2] - point_list[num2]);
			}
			else
			{
				v2 = point_list[num2 + 1] - point_list[num2];
			}
			return MathUtility.Hermite(p, p2, v, v2, t2);
		}

		public static Vector3 Vec3Parse(string str, char split_ch = ',')
		{
			str = Regex.Replace(str, "[()]", string.Empty);
			str = Regex.Replace(str, "[ \u3000]", string.Empty);
			string[] array = str.Split(new char[]
			{
				split_ch
			});
			Vector3 zero = Vector3.zero;
			zero.x = float.Parse(array[0]);
			zero.y = float.Parse(array[1]);
			zero.z = float.Parse(array[2]);
			return zero;
		}

		public static float AngleClamp360(float angle)
		{
			if (Mathf.Abs(angle) >= 360f)
			{
				if (angle > 0f)
				{
					angle -= (float)(Mathf.FloorToInt(angle / 360f) * 360);
				}
				else
				{
					angle += (float)(Mathf.FloorToInt(angle / 360f) * 360);
				}
			}
			else if (angle < 0f)
			{
				angle += 360f;
			}
			return angle;
		}

		public static Vector3 AngleClamp360(Vector3 angle)
		{
			angle.x = MathUtility.AngleClamp360(angle.x);
			angle.y = MathUtility.AngleClamp360(angle.y);
			angle.z = MathUtility.AngleClamp360(angle.z);
			return angle;
		}

		public static float AngleClamp180(float angle)
		{
			if (Mathf.Abs(angle) > 180f)
			{
				if (angle > 0f)
				{
					angle -= (float)(Mathf.FloorToInt(angle / 180f) * 360);
				}
				else
				{
					angle += (float)(Mathf.FloorToInt(angle / 180f) * 360);
				}
			}
			return angle;
		}

		public static Vector3 AngleClamp180(Vector3 angle)
		{
			angle.x = MathUtility.AngleClamp180(angle.x);
			angle.y = MathUtility.AngleClamp180(angle.y);
			angle.z = MathUtility.AngleClamp180(angle.z);
			return angle;
		}

		public static float GetValue(this Vector3 vector, MathUtility.VectorType type)
		{
			return vector[(int)type];
		}

		public static Vector3 GetPrimitiveVector(MathUtility.VectorType type)
		{
			if (type == MathUtility.VectorType.X)
			{
				return Vector3.right;
			}
			if (type != MathUtility.VectorType.Y)
			{
				return Vector3.forward;
			}
			return Vector3.up;
		}

		public static int RatioToPercentage(float ratio, bool is_clamp = false)
		{
			int num = Mathf.FloorToInt(ratio * 100f);
			if (is_clamp)
			{
				num = Mathf.Clamp(num, 0, 100);
			}
			return num;
		}

		public static float PercentageToRatio(int percentage, bool is_clamp = false)
		{
			float num = (float)percentage / 100f;
			if (is_clamp)
			{
				num = Mathf.Clamp01(num);
			}
			return num;
		}

		public static float FloorDecimal(float value, int decimal_point)
		{
			float num = 1f;
			for (int i = 0; i < decimal_point; i++)
			{
				num *= 10f;
			}
			return Mathf.Floor(value * num) / num;
		}

		public static Vector3 FloorVec3Decimal(Vector3 value, int decimal_point)
		{
			value.x = MathUtility.FloorDecimal(value.x, decimal_point);
			value.y = MathUtility.FloorDecimal(value.y, decimal_point);
			value.z = MathUtility.FloorDecimal(value.z, decimal_point);
			return value;
		}

		public static bool IsVector3NaN(Vector3 vector)
		{
			return float.IsNaN(vector.x) || float.IsNaN(vector.y) || float.IsNaN(vector.z);
		}

		public enum VectorType
		{
			X,
			Y,
			Z
		}
	}
}