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/******************************************************************************
* Copyright (C) Leap Motion, Inc. 2011-2018. *
* Leap Motion proprietary and confidential. *
* *
* Use subject to the terms of the Leap Motion SDK Agreement available at *
* https://developer.leapmotion.com/sdk_agreement, or another agreement *
* between Leap Motion and you, your company or other organization. *
******************************************************************************/
namespace Leap.Unity.Animation {
/// <summary> Utility functions for producing smooth motion. </summary>
public static class Ease {
public static class Quadratic {
/// <summary> Maps a linear 0-1 animation coefficient "t" to a quadratic in-out 0-1 curve.
/// The input is not clamped automatically, but expects a value from 0 to 1. </summary>
public static float InOut(float t) {
t *= 2F;
if (t < 1F) return 0.5F * t * t;
t -= 1F;
return (-0.5F) * (t * (t - 2F) - 1F);
}
}
public static class Cubic {
/// <summary> Maps a linear 0-1 animation coefficient "t" to a cubic in-out 0-1 curve.
/// The input is not clamped automatically, but expects a value from 0 to 1. </summary>
public static float InOut(float t) {
t *= 2F;
if (t < 1F) return 0.5F * t * t * t;
t -= 2F;
return 0.5F * (t * t * t + 2F);
}
}
public static class Quartic {
/// <summary> Maps a linear 0-1 animation coefficient "t" to a quartic in-out 0-1 curve.
/// The input is not clamped automatically, but expects a value from 0 to 1. </summary>
public static float InOut(float t) {
t *= 2F;
if (t < 1F) return 0.5F * t * t * t * t;
t -= 2F;
return -0.5F * (t * t * t * t - 2F);
}
}
}
}