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OpenTaiko/TJAPlayer3/Common/Easing.cs
2021-09-21 00:16:38 +02:00

117 lines
4.4 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using TJAPlayer3;
using FDK;
namespace TJAPlayer3
{
class Easing
{
public int EaseIn(CCounter counter, int startPoint, int endPoint, CalcType type)
{
StartPoint = startPoint;
EndPoint = endPoint;
Sa = EndPoint - StartPoint;
TimeMs = (int)counter.n終了値;
Type = type;
CounterValue = counter.n現在の値;
switch (Type)
{
case CalcType.Quadratic: //Quadratic
CounterValue /= TimeMs;
Value = Sa * CounterValue * CounterValue + StartPoint;
break;
case CalcType.Cubic: //Cubic
CounterValue /= TimeMs;
Value = Sa * CounterValue * CounterValue * CounterValue + StartPoint;
break;
case CalcType.Quartic: //Quartic
CounterValue /= TimeMs;
Value = Sa * CounterValue * CounterValue * CounterValue * CounterValue + StartPoint;
break;
case CalcType.Quintic: //Quintic
CounterValue /= TimeMs;
Value = Sa * CounterValue * CounterValue * CounterValue * CounterValue * CounterValue + StartPoint;
break;
case CalcType.Sinusoidal: //Sinusoidal
Value = -Sa * Math.Cos(CounterValue / TimeMs * (Math.PI / 2)) + Sa + StartPoint;
break;
case CalcType.Exponential: //Exponential
Value = Sa * Math.Pow(2, 10 * (CounterValue / TimeMs - 1)) + StartPoint;
break;
case CalcType.Circular: //Circular
CounterValue /= TimeMs;
Value = -Sa * (Math.Sqrt(1 - CounterValue * CounterValue) - 1) + StartPoint;
break;
}
return (int)Value;
}
public int EaseOut(CCounter counter, int startPoint, int endPoint, CalcType type)
{
StartPoint = startPoint;
EndPoint = endPoint;
Sa = EndPoint - StartPoint;
TimeMs = (int)counter.n終了値;
Type = type;
CounterValue = counter.n現在の値;
switch (Type)
{
case CalcType.Quadratic: //Quadratic
CounterValue /= TimeMs;
Value = -Sa * CounterValue * (CounterValue - 2) + StartPoint;
break;
case CalcType.Cubic: //Cubic
CounterValue /= TimeMs;
CounterValue--;
Value = Sa * (CounterValue * CounterValue * CounterValue + 1) + StartPoint;
break;
case CalcType.Quartic: //Quartic
CounterValue /= TimeMs;
CounterValue--;
Value = -Sa * (CounterValue * CounterValue * CounterValue * CounterValue - 1) + StartPoint;
break;
case CalcType.Quintic: //Quintic
CounterValue /= TimeMs;
CounterValue--;
Value = Sa * (CounterValue * CounterValue * CounterValue * CounterValue * CounterValue + 1) + StartPoint;
break;
case CalcType.Sinusoidal: //Sinusoidal
Value = Sa * Math.Sin(CounterValue / TimeMs * (Math.PI / 2)) + StartPoint;
break;
case CalcType.Exponential: //Exponential
Value = Sa * (-Math.Pow(2, -10 * CounterValue / TimeMs) + 1) + StartPoint;
break;
case CalcType.Circular: //Circular
CounterValue /= TimeMs;
CounterValue--;
Value = Sa * Math.Sqrt(1 - CounterValue * CounterValue) + StartPoint;
break;
}
return (int)Value;
}
private int StartPoint;
private int EndPoint;
private int Sa;
private int TimeMs;
private CalcType Type;
private double CounterValue;
private double Value;
public enum CalcType
{
Quadratic,
Cubic,
Quartic,
Quintic,
Sinusoidal,
Exponential,
Circular
}
}
}