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
}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);
}
}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.
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)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)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)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)The Ease3 class provides static methods for performing easing animations on Vector3 or transform
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)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)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)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)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)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)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)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)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)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)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)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)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)The Ease4 class provides static methods for performing easing animations on Vector4 properties, including color animations for Image components and camera backgrounds.
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)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)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)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)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 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