public static float EaseInOut(float time, float duration, float unusedOvershootOrAmplitude, float unusedPeriod)
{
if (time < duration * 0.5f)
{
return(Bounce.EaseIn(time * 2f, duration, -1f, -1f) * 0.5f);
}
return(Bounce.EaseOut(time * 2f - duration, duration, -1f, -1f) * 0.5f + 0.5f);
}
public static float EaseInOut(float t, float b, float c, float d)
{
if (t < d / 2)
{
return(Bounce.EaseIn(t * 2, 0, c, d) * .5f + b);
}
else
{
return(Bounce.EaseOut(t * 2 - d, 0, c, d) * .5f + c * .5f + b);
}
}
/// <summary>
/// Calculate a Ease In from a pourcent
/// </summary>
/// <param name="linearStep">Pourcent on the ease</param>
/// <param name="type">Easing Type</param>
public static float EaseIn(float linearStep, EasingType type)
{
switch (type)
{
case EasingType.Step:
return(Mathf.Round(linearStep));
default:
case EasingType.Linear:
return(linearStep);
case EasingType.Sine:
return(Sine.EaseIn(linearStep));
case EasingType.Quadratic:
return(Power.EaseIn(linearStep, 2));
case EasingType.Cubic:
return(Power.EaseIn(linearStep, 3));
case EasingType.Quartic:
return(Power.EaseIn(linearStep, 4));
case EasingType.Quintic:
return(Power.EaseIn(linearStep, 5));
case EasingType.Elastic:
return(Elastic.EaseIn(linearStep));
case EasingType.Bounce:
return(Bounce.EaseIn(linearStep));
case EasingType.Back:
return(Back.EaseIn(linearStep));
case EasingType.Expo:
return(Expo.EaseIn(linearStep));
case EasingType.Circ:
return(Circ.EaseIn(linearStep));
}
}
public static float EaseIn(float linearStep, EaseType type)
{
switch (type)
{
case EaseType.None:
return(1);
case EaseType.Linear:
return(linearStep);
case EaseType.Sine:
return(Sine.EaseIn(linearStep));
case EaseType.Quad:
return(Power.EaseIn(linearStep, 2));
case EaseType.Cubic:
return(Power.EaseIn(linearStep, 3));
case EaseType.Quartic:
return(Power.EaseIn(linearStep, 4));
case EaseType.Quintic:
return(Power.EaseIn(linearStep, 5));
case EaseType.Circ:
return(Circ.EaseIn(linearStep));
case EaseType.Bounce:
return(Bounce.EaseIn(linearStep));
case EaseType.Back:
return(Back.EaseIn(linearStep));
case EaseType.Elastic:
return(Elastic.EaseIn(linearStep));
}
Debug.LogError("Um.");
return(0);
}
/// <summary>
/// Returns a value between 0 and 1 (inclusive) based on the elapsed time and ease selected
/// </summary>
internal static float Evaluate(EaseType easeType, float time, float duration, float overshootOrAmplitude, float period)
{
if (duration <= 0)
{
return(1);
}
switch (easeType)
{
case EaseType.Linear:
return(time / duration);
case EaseType.SineIn:
return(-(float)Math.Cos(time / duration * _PiOver2) + 1);
case EaseType.SineOut:
return((float)Math.Sin(time / duration * _PiOver2));
case EaseType.SineInOut:
return(-0.5f * ((float)Math.Cos(Mathf.PI * time / duration) - 1));
case EaseType.QuadIn:
return((time /= duration) * time);
case EaseType.QuadOut:
return(-(time /= duration) * (time - 2));
case EaseType.QuadInOut:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time);
}
return(-0.5f * ((--time) * (time - 2) - 1));
case EaseType.CubicIn:
return((time /= duration) * time * time);
case EaseType.CubicOut:
return((time = time / duration - 1) * time * time + 1);
case EaseType.CubicInOut:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time);
}
return(0.5f * ((time -= 2) * time * time + 2));
case EaseType.QuartIn:
return((time /= duration) * time * time * time);
case EaseType.QuartOut:
return(-((time = time / duration - 1) * time * time * time - 1));
case EaseType.QuartInOut:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time * time);
}
return(-0.5f * ((time -= 2) * time * time * time - 2));
case EaseType.QuintIn:
return((time /= duration) * time * time * time * time);
case EaseType.QuintOut:
return((time = time / duration - 1) * time * time * time * time + 1);
case EaseType.QuintInOut:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time * time * time);
}
return(0.5f * ((time -= 2) * time * time * time * time + 2));
case EaseType.ExpoIn:
return((time == 0) ? 0 : (float)Math.Pow(2, 10 * (time / duration - 1)));
case EaseType.ExpoOut:
if (time == duration)
{
return(1);
}
return(-(float)Math.Pow(2, -10 * time / duration) + 1);
case EaseType.ExpoInOut:
if (time == 0)
{
return(0);
}
if (time == duration)
{
return(1);
}
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * (float)Math.Pow(2, 10 * (time - 1)));
}
return(0.5f * (-(float)Math.Pow(2, -10 * --time) + 2));
case EaseType.CircIn:
return(-((float)Math.Sqrt(1 - (time /= duration) * time) - 1));
case EaseType.CircOut:
return((float)Math.Sqrt(1 - (time = time / duration - 1) * time));
case EaseType.CircInOut:
if ((time /= duration * 0.5f) < 1)
{
return(-0.5f * ((float)Math.Sqrt(1 - time * time) - 1));
}
return(0.5f * ((float)Math.Sqrt(1 - (time -= 2) * time) + 1));
case EaseType.ElasticIn:
float s0;
if (time == 0)
{
return(0);
}
if ((time /= duration) == 1)
{
return(1);
}
if (period == 0)
{
period = duration * 0.3f;
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s0 = period / 4;
}
else
{
s0 = period / _TwoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
return(-(overshootOrAmplitude * (float)Math.Pow(2, 10 * (time -= 1)) * (float)Math.Sin((time * duration - s0) * _TwoPi / period)));
case EaseType.ElasticOut:
float s1;
if (time == 0)
{
return(0);
}
if ((time /= duration) == 1)
{
return(1);
}
if (period == 0)
{
period = duration * 0.3f;
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s1 = period / 4;
}
else
{
s1 = period / _TwoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
return(overshootOrAmplitude * (float)Math.Pow(2, -10 * time) * (float)Math.Sin((time * duration - s1) * _TwoPi / period) + 1);
case EaseType.ElasticInOut:
float s;
if (time == 0)
{
return(0);
}
if ((time /= duration * 0.5f) == 2)
{
return(1);
}
if (period == 0)
{
period = duration * (0.3f * 1.5f);
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s = period / 4;
}
else
{
s = period / _TwoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
if (time < 1)
{
return(-0.5f * (overshootOrAmplitude * (float)Math.Pow(2, 10 * (time -= 1)) * (float)Math.Sin((time * duration - s) * _TwoPi / period)));
}
return(overshootOrAmplitude * (float)Math.Pow(2, -10 * (time -= 1)) * (float)Math.Sin((time * duration - s) * _TwoPi / period) * 0.5f + 1);
case EaseType.BackIn:
return((time /= duration) * time * ((overshootOrAmplitude + 1) * time - overshootOrAmplitude));
case EaseType.BackOut:
return((time = time / duration - 1) * time * ((overshootOrAmplitude + 1) * time + overshootOrAmplitude) + 1);
case EaseType.BackInOut:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * (time * time * (((overshootOrAmplitude *= (1.525f)) + 1) * time - overshootOrAmplitude)));
}
return(0.5f * ((time -= 2) * time * (((overshootOrAmplitude *= (1.525f)) + 1) * time + overshootOrAmplitude) + 2));
case EaseType.BounceIn:
return(Bounce.EaseIn(time, duration));
case EaseType.BounceOut:
return(Bounce.EaseOut(time, duration));
case EaseType.BounceInOut:
return(Bounce.EaseInOut(time, duration));
default:
return(-(time /= duration) * (time - 2));
}
}
/// <summary>
/// Returns a value between 0 and 1 (inclusive) based on the elapsed time and ease selected
/// </summary>
public static float Evaluate(Ease easeType, EaseFunction customEase, float time, float duration, float overshootOrAmplitude, float period)
{
switch (easeType)
{
case Ease.Linear:
return(time / duration);
case Ease.InSine:
return(-(float)Math.Cos(time / duration * _PiOver2) + 1);
case Ease.OutSine:
return((float)Math.Sin(time / duration * _PiOver2));
case Ease.InOutSine:
return(-0.5f * ((float)Math.Cos(Mathf.PI * time / duration) - 1));
case Ease.InQuad:
return((time /= duration) * time);
case Ease.OutQuad:
return(-(time /= duration) * (time - 2));
case Ease.InOutQuad:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time);
}
return(-0.5f * ((--time) * (time - 2) - 1));
case Ease.InCubic:
return((time /= duration) * time * time);
case Ease.OutCubic:
return((time = time / duration - 1) * time * time + 1);
case Ease.InOutCubic:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time);
}
return(0.5f * ((time -= 2) * time * time + 2));
case Ease.InQuart:
return((time /= duration) * time * time * time);
case Ease.OutQuart:
return(-((time = time / duration - 1) * time * time * time - 1));
case Ease.InOutQuart:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time * time);
}
return(-0.5f * ((time -= 2) * time * time * time - 2));
case Ease.InQuint:
return((time /= duration) * time * time * time * time);
case Ease.OutQuint:
return((time = time / duration - 1) * time * time * time * time + 1);
case Ease.InOutQuint:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time * time * time);
}
return(0.5f * ((time -= 2) * time * time * time * time + 2));
case Ease.InExpo:
return((time == 0) ? 0 : (float)Math.Pow(2, 10 * (time / duration - 1)));
case Ease.OutExpo:
if (time == duration)
{
return(1);
}
return(-(float)Math.Pow(2, -10 * time / duration) + 1);
case Ease.InOutExpo:
if (time == 0)
{
return(0);
}
if (time == duration)
{
return(1);
}
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * (float)Math.Pow(2, 10 * (time - 1)));
}
return(0.5f * (-(float)Math.Pow(2, -10 * --time) + 2));
case Ease.InCirc:
return(-((float)Math.Sqrt(1 - (time /= duration) * time) - 1));
case Ease.OutCirc:
return((float)Math.Sqrt(1 - (time = time / duration - 1) * time));
case Ease.InOutCirc:
if ((time /= duration * 0.5f) < 1)
{
return(-0.5f * ((float)Math.Sqrt(1 - time * time) - 1));
}
return(0.5f * ((float)Math.Sqrt(1 - (time -= 2) * time) + 1));
case Ease.InElastic:
float s0;
if (time == 0)
{
return(0);
}
if ((time /= duration) == 1)
{
return(1);
}
if (period == 0)
{
period = duration * 0.3f;
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s0 = period / 4;
}
else
{
s0 = period / _TwoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
return(-(overshootOrAmplitude * (float)Math.Pow(2, 10 * (time -= 1)) * (float)Math.Sin((time * duration - s0) * _TwoPi / period)));
case Ease.OutElastic:
float s1;
if (time == 0)
{
return(0);
}
if ((time /= duration) == 1)
{
return(1);
}
if (period == 0)
{
period = duration * 0.3f;
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s1 = period / 4;
}
else
{
s1 = period / _TwoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
return(overshootOrAmplitude * (float)Math.Pow(2, -10 * time) * (float)Math.Sin((time * duration - s1) * _TwoPi / period) + 1);
case Ease.InOutElastic:
float s;
if (time == 0)
{
return(0);
}
if ((time /= duration * 0.5f) == 2)
{
return(1);
}
if (period == 0)
{
period = duration * (0.3f * 1.5f);
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s = period / 4;
}
else
{
s = period / _TwoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
if (time < 1)
{
return(-0.5f * (overshootOrAmplitude * (float)Math.Pow(2, 10 * (time -= 1)) * (float)Math.Sin((time * duration - s) * _TwoPi / period)));
}
return(overshootOrAmplitude * (float)Math.Pow(2, -10 * (time -= 1)) * (float)Math.Sin((time * duration - s) * _TwoPi / period) * 0.5f + 1);
case Ease.InBack:
return((time /= duration) * time * ((overshootOrAmplitude + 1) * time - overshootOrAmplitude));
case Ease.OutBack:
return((time = time / duration - 1) * time * ((overshootOrAmplitude + 1) * time + overshootOrAmplitude) + 1);
case Ease.InOutBack:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * (time * time * (((overshootOrAmplitude *= (1.525f)) + 1) * time - overshootOrAmplitude)));
}
return(0.5f * ((time -= 2) * time * (((overshootOrAmplitude *= (1.525f)) + 1) * time + overshootOrAmplitude) + 2));
case Ease.InBounce:
return(Bounce.EaseIn(time, duration, overshootOrAmplitude, period));
case Ease.OutBounce:
return(Bounce.EaseOut(time, duration, overshootOrAmplitude, period));
case Ease.InOutBounce:
return(Bounce.EaseInOut(time, duration, overshootOrAmplitude, period));
case Ease.INTERNAL_Custom:
return(customEase(time, duration, overshootOrAmplitude, period));
case Ease.INTERNAL_Zero:
// 0 duration tween
return(1);
// Extra custom eases ////////////////////////////////////////////////////
case Ease.Flash:
return(Flash.Ease(time, duration, overshootOrAmplitude, period));
case Ease.InFlash:
return(Flash.EaseIn(time, duration, overshootOrAmplitude, period));
case Ease.OutFlash:
return(Flash.EaseOut(time, duration, overshootOrAmplitude, period));
case Ease.InOutFlash:
return(Flash.EaseInOut(time, duration, overshootOrAmplitude, period));
// Default
default:
// OutQuad
return(-(time /= duration) * (time - 2));
}
}
internal static float Ease(Type ease, float t, float duration)
{
switch (ease)
{
case Type.Linear:
return(Linear.EaseNone(t, duration));
case Type.BackIn:
return(Back.EaseIn(t, duration));
case Type.BackOut:
return(Back.EaseOut(t, duration));
case Type.BackInOut:
return(Back.EaseInOut(t, duration));
case Type.BounceIn:
return(Bounce.EaseIn(t, duration));
case Type.BounceOut:
return(Bounce.EaseOut(t, duration));
case Type.BounceInOut:
return(Bounce.EaseInOut(t, duration));
case Type.CircIn:
return(Circular.EaseIn(t, duration));
case Type.CircOut:
return(Circular.EaseOut(t, duration));
case Type.CircInOut:
return(Circular.EaseInOut(t, duration));
case Type.CubicIn:
return(Cubic.EaseIn(t, duration));
case Type.CubicOut:
return(Cubic.EaseOut(t, duration));
case Type.CubicInOut:
return(Cubic.EaseInOut(t, duration));
case Type.ElasticIn:
return(Elastic.EaseIn(t, duration));
case Type.ElasticOut:
return(Elastic.EaseOut(t, duration));
case Type.ElasticInOut:
return(Elastic.EaseInOut(t, duration));
case Type.Punch:
return(Elastic.Punch(t, duration));
case Type.ExpoIn:
return(Exponential.EaseIn(t, duration));
case Type.ExpoOut:
return(Exponential.EaseOut(t, duration));
case Type.ExpoInOut:
return(Exponential.EaseInOut(t, duration));
case Type.QuadIn:
return(Quadratic.EaseIn(t, duration));
case Type.QuadOut:
return(Quadratic.EaseOut(t, duration));
case Type.QuadInOut:
return(Quadratic.EaseInOut(t, duration));
case Type.QuartIn:
return(Quartic.EaseIn(t, duration));
case Type.QuartOut:
return(Quartic.EaseOut(t, duration));
case Type.QuartInOut:
return(Quartic.EaseInOut(t, duration));
case Type.QuintIn:
return(Quintic.EaseIn(t, duration));
case Type.QuintOut:
return(Quintic.EaseOut(t, duration));
case Type.QuintInOut:
return(Quintic.EaseInOut(t, duration));
case Type.SineIn:
return(Sinusoidal.EaseIn(t, duration));
case Type.SineOut:
return(Sinusoidal.EaseOut(t, duration));
case Type.SineInOut:
return(Sinusoidal.EaseInOut(t, duration));
default:
return(Linear.EaseNone(t, duration));
}
}
public static float EaseConstant(Ease easeType, float time, float duration, float overshootOrAmplitude = 0, float period = 0)
{
switch (easeType)
{
case Ease.Linear:
return(time / duration);
case Ease.InSine:
return(-(float)Math.Cos(time / duration * piOver2) + 1);
case Ease.OutSine:
return((float)Math.Sin(time / duration * piOver2));
case Ease.InOutSine:
return(-0.5f * ((float)Math.Cos(Mathf.PI * time / duration) - 1));
case Ease.InQuad:
return((time /= duration) * time);
case Ease.OutQuad:
return(-(time /= duration) * (time - 2));
case Ease.InOutQuad:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time);
}
return(-0.5f * ((--time) * (time - 2) - 1));
case Ease.InCubic:
return((time /= duration) * time * time);
case Ease.OutCubic:
return((time = time / duration - 1) * time * time + 1);
case Ease.InOutCubic:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time);
}
return(0.5f * ((time -= 2) * time * time + 2));
case Ease.InQuart:
return((time /= duration) * time * time * time);
case Ease.OutQuart:
return(-((time = time / duration - 1) * time * time * time - 1));
case Ease.InOutQuart:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time * time);
}
return(-0.5f * ((time -= 2) * time * time * time - 2));
case Ease.InQuint:
return((time /= duration) * time * time * time * time);
case Ease.OutQuint:
return((time = time / duration - 1) * time * time * time * time + 1);
case Ease.InOutQuint:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * time * time * time * time * time);
}
return(0.5f * ((time -= 2) * time * time * time * time + 2));
case Ease.InExpo:
return((time == 0) ? 0 : (float)Math.Pow(2, 10 * (time / duration - 1)));
case Ease.OutExpo:
if (time == duration)
{
return(1);
}
return(-(float)Math.Pow(2, -10 * time / duration) + 1);
case Ease.InOutExpo:
if (time == 0)
{
return(0);
}
if (time == duration)
{
return(1);
}
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * (float)Math.Pow(2, 10 * (time - 1)));
}
return(0.5f * (-(float)Math.Pow(2, -10 * --time) + 2));
case Ease.InCirc:
return(-((float)Math.Sqrt(1 - (time /= duration) * time) - 1));
case Ease.OutCirc:
return((float)Math.Sqrt(1 - (time = time / duration - 1) * time));
case Ease.InOutCirc:
if ((time /= duration * 0.5f) < 1)
{
return(-0.5f * ((float)Math.Sqrt(1 - time * time) - 1));
}
return(0.5f * ((float)Math.Sqrt(1 - (time -= 2) * time) + 1));
case Ease.InElastic:
float s0;
if (time == 0)
{
return(0);
}
if ((time /= duration) == 1)
{
return(1);
}
if (period == 0)
{
period = duration * 0.3f;
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s0 = period / 4;
}
else
{
s0 = period / twoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
return(-(overshootOrAmplitude * (float)Math.Pow(2, 10 * (time -= 1)) * (float)Math.Sin((time * duration - s0) * twoPi / period)));
case Ease.OutElastic:
float s1;
if (time == 0)
{
return(0);
}
if ((time /= duration) == 1)
{
return(1);
}
if (period == 0)
{
period = duration * 0.3f;
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s1 = period / 4;
}
else
{
s1 = period / twoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
return(overshootOrAmplitude * (float)Math.Pow(2, -10 * time) * (float)Math.Sin((time * duration - s1) * twoPi / period) + 1);
case Ease.InOutElastic:
float s;
if (time == 0)
{
return(0);
}
if ((time /= duration * 0.5f) == 2)
{
return(1);
}
if (period == 0)
{
period = duration * (0.3f * 1.5f);
}
if (overshootOrAmplitude < 1)
{
overshootOrAmplitude = 1;
s = period / 4;
}
else
{
s = period / twoPi * (float)Math.Asin(1 / overshootOrAmplitude);
}
if (time < 1)
{
return(-0.5f * (overshootOrAmplitude * (float)Math.Pow(2, 10 * (time -= 1)) * (float)Math.Sin((time * duration - s) * twoPi / period)));
}
return(overshootOrAmplitude * (float)Math.Pow(2, -10 * (time -= 1)) * (float)Math.Sin((time * duration - s) * twoPi / period) * 0.5f + 1);
case Ease.InBack:
return((time /= duration) * time * ((overshootOrAmplitude + 1) * time - overshootOrAmplitude));
case Ease.OutBack:
return((time = time / duration - 1) * time * ((overshootOrAmplitude + 1) * time + overshootOrAmplitude) + 1);
case Ease.InOutBack:
if ((time /= duration * 0.5f) < 1)
{
return(0.5f * (time * time * (((overshootOrAmplitude *= (1.525f)) + 1) * time - overshootOrAmplitude)));
}
return(0.5f * ((time -= 2) * time * (((overshootOrAmplitude *= (1.525f)) + 1) * time + overshootOrAmplitude) + 2));
case Ease.InBounce:
return(Bounce.EaseIn(time, duration, overshootOrAmplitude, period));
case Ease.OutBounce:
return(Bounce.EaseOut(time, duration, overshootOrAmplitude, period));
case Ease.InOutBounce:
return(Bounce.EaseInOut(time, duration, overshootOrAmplitude, period));
default:
// OutQuad
return(-(time /= duration) * (time - 2));
}
}
public override double Ease(double t, double b, double c, double d)
{
return(Bounce.EaseIn(t, b, c, d));
}
