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package com.diozero.animation.easing;
/*-
* #%L
* Organisation: diozero
* Project: Device I/O Zero - Core
* Filename: Bounce.java
*
* This file is part of the diozero project. More information about this project
* can be found at http://www.diozero.com/
* %%
* Copyright (C) 2016 - 2021 diozero
* %%
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
* #L%
*/
public class Bounce {
public static final String IN = "inBounce";
public static float easeIn(float t, float b, float c, float d) {
return c - easeOut(d - t, 0, c, d) + b;
}
public static final String OUT = "outBounce";
public static float easeOut(float t, float b, float c, float d) {
if ((t /= d) < (1 / 2.75f)) {
return c * (7.5625f * t * t) + b;
}
if (t < (2 / 2.75f)) {
return c * (7.5625f * (t -= (1.5f / 2.75f)) * t + .75f) + b;
}
if (t < (2.5 / 2.75)) {
return c * (7.5625f * (t -= (2.25f / 2.75f)) * t + .9375f) + b;
}
return c * (7.5625f * (t -= (2.625f / 2.75f)) * t + .984375f) + b;
}
public static final String IN_OUT = "inOutBounce";
public static float easeInOut(float t, float b, float c, float d) {
if (t < d / 2) {
return easeIn(t * 2, 0, c, d) * .5f + b;
}
return easeOut(t * 2 - d, 0, c, d) * .5f + c * .5f + b;
}
}
