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Ease

Simple Unity Easing

The following easing functions are available for various animation effects:

public enum EaseType
{
    Linear,
    SineIn, SineOut, SineInOut,
    QuadIn, QuadOut, QuadInOut,
    CubicIn, CubicOut, CubicInOut,
    QuartIn, QuartOut, QuartInOut,
    QuintIn, QuintOut, QuintInOut,
    ExpoIn, ExpoOut, ExpoInOut,
    CircIn, CircOut, CircInOut,
    BackIn, BackOut, BackInOut,
    ElasticIn, ElasticOut, ElasticInOut,
    BounceIn, BounceOut, BounceInOut,
    Spring
}

Example usage

using ca.HenrySoftware.Rage;
using UnityEngine;
using UnityEngine.UI;
public class TestEase : MonoBehaviour
{
	[SerializeField] private Image _slowStatus = null;
	private bool _slow;
	[SerializeField] private Image _pauseStatus = null;
	private bool _pause;
	[SerializeField] private Image _fastStatus = null;
	private bool _fast;
	private readonly Color _colorOff = Color.white.SetAlpha(.75f);
	private readonly Color _colorOn = Color.blue.SetAlpha(.75f);
	private readonly Vector3 _scaleTo = new Vector3(1.333f, 1.333f, 1f);
	private const float _time = .333f;
	private void Start()
	{
		_slowStatus.color = _colorOff;
		_pauseStatus.color = _colorOff;
		_fastStatus.color = _colorOff;
	}
	public void Slow()
	{
		_pause = false;
		_pauseStatus.color = _colorOff;
		_fast = false;
		_fastStatus.color = _colorOff;
		Time.timeScale = (_slow = !_slow) ? .1f : 1f;
		_slowStatus.StopAllCoroutines();
		Ease3.GoColorTo(_slowStatus, (_slow ? _colorOn : _colorOff).GetVector3(), _time, null, null, EaseType.SineInOut, 0f, 1, false, true);
		Ease3.GoScaleTo(_slowStatus, _scaleTo, _time, null, () =>
		{
			Ease3.GoScaleTo(_slowStatus, Vector3.one, _time, null, null, EaseType.BackInOut, 0f, 1, false, true);
		}, EaseType.BackInOut, 0f, 1, false, true);
	}
	public void Pause()
	{
		Time.timeScale = (_pause = !_pause) ? 0f : _slow ? .1f : _fast ? 2f : 1f;
		_pauseStatus.StopAllCoroutines();
		Ease3.GoColorTo(_pauseStatus, (_pause ? _colorOn : _colorOff).GetVector3(), _time, null, null, EaseType.SineInOut, 0f, 1, false, true);
		Ease3.GoScaleTo(_pauseStatus, _scaleTo, _time, null, () =>
		{
			Ease3.GoScaleTo(_pauseStatus, Vector3.one, _time, null, null, EaseType.BackInOut, 0f, 1, false, true);
		}, EaseType.BackInOut, 0f, 1, false, true);
	}
	public void Fast()
	{
		_slow = false;
		_slowStatus.color = _colorOff;
		_pause = false;
		_pauseStatus.color = _colorOff;
		Time.timeScale = (_fast = !_fast) ? 2f : 1f;
		_fastStatus.StopAllCoroutines();
		Ease3.GoColorTo(_fastStatus, (_fast ? _colorOn : _colorOff).GetVector3(), _time, null, null, EaseType.SineInOut, 0f, 1, false, true);
		Ease3.GoScaleTo(_fastStatus, _scaleTo, _time, null, () =>
		{
			Ease3.GoScaleTo(_fastStatus, Vector3.one, _time, null, null, EaseType.BackInOut, 0f, 1, false, true);
		}, EaseType.BackInOut, 0f, 1, false, true);
	}
}

Documentation

Ease

The Ease class provides a collection of easing functions and utility methods for creating smooth animations in Unity. Ease either a float, or the alpha value of UI components.

Ease.Go

Initiates a coroutine-based animation with specified parameters.

IEnumerator Go(MonoBehaviour m, float from, float to, float time,
    Action<float> update, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease.GoAlpha

Initiates an alpha animation with specified parameters.

IEnumerator GoAlpha(MonoBehaviour m, float from, float to, float time,
    Action<float> update, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease.GoAlphaTo

Initiates an alpha animation to the specified value.

IEnumerator GoAlphaTo(MonoBehaviour m, float to, float time,
    Action<float> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease.GoAlphaBy

Initiates an alpha animation by the specified value.

IEnumerator GoAlphaBy(MonoBehaviour m, float by, float time,
    Action<float> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3

The Ease3 class provides static methods for performing easing animations on Vector3 or transform

Ease3.Go

Starts an easing animation on a Vector3 property from a starting value to an ending value.

IEnumerator Go(MonoBehaviour m, Vector3 from, Vector3 to, float time,
    Action<Vector3> update, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoPosition

Starts an easing animation on the local position from a starting value to an ending value.

IEnumerator GoPosition(MonoBehaviour m, Vector3 from, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoPositionTo

Starts an easing animation on the local position of a Unity object to a specific value.

IEnumerator GoPositionTo(MonoBehaviour m, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoPositionBy

Starts an easing animation on the local position of a Unity object by a specific value.

IEnumerator GoPositionBy(MonoBehaviour m, Vector3 by, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoRotation

Starts an easing animation on the local rotation of a Unity object from a starting value to an ending value.

IEnumerator GoRotation(MonoBehaviour m, Vector3 from, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoRotationTo

Starts an easing animation on the local rotation of a Unity object to a specific value.

IEnumerator GoRotationTo(MonoBehaviour m, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoRotationBy

Starts an easing animation on the local rotation of a Unity object by a specific value.

IEnumerator GoRotationBy(MonoBehaviour m, Vector3 by, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoScale

Starts an easing animation on the local scale of a Unity object from a starting value to an ending value.

IEnumerator GoScale(MonoBehaviour m, Vector3 from, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoScaleTo

Starts an easing animation on the local scale of a Unity object to a specific value.

IEnumerator GoScaleTo(MonoBehaviour m, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoScaleBy

Starts an easing animation on the local scale of a Unity object by a specific value.

IEnumerator GoScaleBy(MonoBehaviour m, Vector3 by, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoColor

Starts an easing animation on the color of a Image component or the background color of the main camera from a starting value to an ending value.

IEnumerator GoColor(MonoBehaviour m, Vector3 from, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoColorTo

Starts an easing animation on the color of a Image component or the background color of the main camera to a specific value.

IEnumerator GoColorTo(MonoBehaviour m, Vector3 to, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease3.GoColorBy

Starts an easing animation on the color of a Image component or the background color of the main camera by a specific value.

IEnumerator GoColorBy(MonoBehaviour m, Vector3 by, float time,
    Action<Vector3> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease4

The Ease4 class provides static methods for performing easing animations on Vector4 properties, including color animations for Image components and camera backgrounds.

Ease4.Go

Starts an easing animation on a Vector4 property from a starting value to an ending value.

IEnumerator Go(MonoBehaviour m, Vector4 from, Vector4 to, float time,
    Action<Vector4> update, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease4.GoColor

Starts an easing animation on the color of an Image component or the background color of the main camera.

IEnumerator GoColor(MonoBehaviour m, Vector4 from, Vector4 to, float time,
    Action<Vector4> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease4.GoColorTo

Starts an easing animation on the color of an Image component or the background color of the main camera to a specific value.

IEnumerator GoColorTo(MonoBehaviour m, Vector4 to, float time,
    Action<Vector4> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Ease4.GoColorBy

Starts an easing animation on the color of an Image component or the background color of the main camera by a specific value.

IEnumerator GoColorBy(MonoBehaviour m, Vector4 by, float time,
    Action<Vector4> update = null, Action complete = null, EaseType type = EaseType.Linear,
    float delay = 0f, int repeat = 1, bool pingPong = false, bool realTime = false)

Extension methods

Vectors are used as parameters for the above methods instead of Color objects. To help with converting between Colors and Vectors, extension methods are made available: Vector3.GetColor(), Vector4.GetColor(), Color.GetVector3(), Color.GetVector4(), Color.SetAlpha(float alpha).

Easing functions

Easing functions provide a convenient way to interpolate values smoothly over time. These functions define how the intermediate values between a start and an end point are calculated based on a time factor.

Easing functions are provided as static methods in the Ease class. To use an easing function, simply call the corresponding method and provide the required parameters:

using ca.HenrySoftware.Rage;

float startValue = 0.0f;
float endValue = 1.0f;
float time = 0.5f; // Progress of the interpolation, usually between 0 and 1

float interpolatedValue = Ease.QuadInOut(startValue, endValue, time);

Debug.Log(interpolatedValue); // Output: 0.5