C# Easing Functions

EasingFunctions.cs

using System;

namespace Kryz.Tweening
{
	// Made with the help of this great post: https://joshondesign.com/2013/03/01/improvedEasingEquations

	// --------------------------------- Other Related Links --------------------------------------------------------------------
	// Original equations, bad formulation:	https://github.com/danro/jquery-easing/blob/master/jquery.easing.js
	// A few equations, very simplified:	https://gist.github.com/gre/1650294
	// Easings.net equations, simplified:	https://github.com/ai/easings.net/blob/master/src/easings/easingsFunctions.ts

	public static class EasingFunctions
	{
		public static float Linear(float t) => t;

		public static float InQuad(float t) => t * t;
		public static float OutQuad(float t) => 1 - InQuad(1 - t);
		public static float InOutQuad(float t)
		{
			if (t < 0.5) return InQuad(t * 2) / 2;
			return 1 - InQuad((1 - t) * 2) / 2;
		}

		public static float InCubic(float t) => t * t * t;
		public static float OutCubic(float t) => 1 - InCubic(1 - t);
		public static float InOutCubic(float t)
		{
			if (t < 0.5) return InCubic(t * 2) / 2;
			return 1 - InCubic((1 - t) * 2) / 2;
		}

		public static float InQuart(float t) => t * t * t * t;
		public static float OutQuart(float t) => 1 - InQuart(1 - t);
		public static float InOutQuart(float t)
		{
			if (t < 0.5) return InQuart(t * 2) / 2;
			return 1 - InQuart((1 - t) * 2) / 2;
		}

		public static float InQuint(float t) => t * t * t * t * t;
		public static float OutQuint(float t) => 1 - InQuint(1 - t);
		public static float InOutQuint(float t)
		{
			if (t < 0.5) return InQuint(t * 2) / 2;
			return 1 - InQuint((1 - t) * 2) / 2;
		}

		public static float InSine(float t) => 1 - (float)Math.Cos(t * Math.PI / 2);
		public static float OutSine(float t) => (float)Math.Sin(t * Math.PI / 2);
		public static float InOutSine(float t) => (float)(Math.Cos(t * Math.PI) - 1) / -2;

		public static float InExpo(float t) => (float)Math.Pow(2, 10 * (t - 1));
		public static float OutExpo(float t) => 1 - InExpo(1 - t);
		public static float InOutExpo(float t)
		{
			if (t < 0.5) return InExpo(t * 2) / 2;
			return 1 - InExpo((1 - t) * 2) / 2;
		}

		public static float InCirc(float t) => -((float)Math.Sqrt(1 - t * t) - 1);
		public static float OutCirc(float t) => 1 - InCirc(1 - t);
		public static float InOutCirc(float t)
		{
			if (t < 0.5) return InCirc(t * 2) / 2;
			return 1 - InCirc((1 - t) * 2) / 2;
		}

		public static float InElastic(float t) => 1 - OutElastic(1 - t);
		public static float OutElastic(float t)
		{
			float p = 0.3f;
			return (float)Math.Pow(2, -10 * t) * (float)Math.Sin((t - p / 4) * (2 * Math.PI) / p) + 1;
		}
		public static float InOutElastic(float t)
		{
			if (t < 0.5) return InElastic(t * 2) / 2;
			return 1 - InElastic((1 - t) * 2) / 2;
		}

		public static float InBack(float t)
		{
			float s = 1.70158f;
			return t * t * ((s + 1) * t - s);
		}
		public static float OutBack(float t) => 1 - InBack(1 - t);
		public static float InOutBack(float t)
		{
			if (t < 0.5) return InBack(t * 2) / 2;
			return 1 - InBack((1 - t) * 2) / 2;
		}

		public static float InBounce(float t) => 1 - OutBounce(1 - t);
		public static float OutBounce(float t)
		{
			float div = 2.75f;
			float mult = 7.5625f;

			if (t < 1 / div)
			{
				return mult * t * t;
			}
			else if (t < 2 / div)
			{
				t -= 1.5f / div;
				return mult * t * t + 0.75f;
			}
			else if (t < 2.5 / div)
			{
				t -= 2.25f / div;
				return mult * t * t + 0.9375f;
			}
			else
			{
				t -= 2.625f / div;
				return mult * t * t + 0.984375f;
			}
		}
		public static float InOutBounce(float t)
		{
			if (t < 0.5) return InBounce(t * 2) / 2;
			return 1 - InBounce((1 - t) * 2) / 2;
		}
	}
}

@CustomPhase

The InSine formula is slightly incorrect, it should be 1 - cos, not -cos.

Nice catch. Fixed.

Also, wtf is up with all the "Noice" comments o.O

Also, wtf is up with all the "Noice" comments o.O

idk but it's kinda funny tbh

Noice

Noice

Noice

Noice

Noice

Noice

I smile every time I get a notification from here

Noice

Noice

I smile every time I get a notification from here

Noice

same :3
reminds me of how i felt 2 years ago

yus owo

Noice

Noice