AndroidのデフォルトのアニメーションがダサいのでEasingをJavascriptから持ってきた

androidのinterpolatorのイージングがあまりにもダサかったので、Easingを持ってくる為のクラスを作った。

interpolatorを継承しようと思ったけど、結構複雑そうなので、簡単に計算式だけ利用できるクラスです。

/*
 * jQuery Easing v1.3 - http://gsgd.co.uk/sandbox/jquery/easing/
 *
 * Uses the built in easing capabilities added In jQuery 1.1
 * to offer multiple easing options
 *
 * TERMS OF USE - jQuery Easing
 * 
 * Open source under the BSD License. 
 * 
 * Copyright c 2008 George McGinley Smith
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 * 
 * Redistributions of source code must retain the above copyright notice, this list of 
 * conditions and the following disclaimer.
 * Redistributions in binary form must reproduce the above copyright notice, this list 
 * of conditions and the following disclaimer in the documentation and/or other materials 
 * provided with the distribution.
 * 
 * Neither the name of the author nor the names of contributors may be used to endorse 
 * or promote products derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 *  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
 * OF THE POSSIBILITY OF SUCH DAMAGE. 
 *
*/

/**
* Easing.java: javascript to java
* Author: miyauchi shunjiro
* Version: 0.0.1
*
* Example usage:
* Easing.easeInQuad(0.2f);
* 
**/

public class Easing {

	public static float easeInQuad(float t) {
		return easeInQuad(t, 0f, 1f, 1f);
	}

	public static float easeOutQuad(float t) {
		return easeInQuad(t, 0f, 1f, 1f);
	}

	public static float easeInOutQuad(float t) {
		return easeInOutQuad(t, 0f, 1f, 1f);
	}

	public static float easeInCubic(float t) {
		return easeInCubic(t, 0f, 1f, 1f);
	}

	public static float easeOutCubic(float t) {
		return easeOutCubic(t, 0f, 1f, 1f);
	}

	public static float easeInOutCubic(float t) {
		return easeInOutCubic(t, 0f, 1f, 1f);
	}

	public static float easeInQuart(float t) {
		return easeInQuart(t, 0f, 1f, 1f);
	}

	public static float easeOutQuart(float t) {
		return easeOutQuart(t, 0f, 1f, 1f);
	}

	public static float easeInOutQuart(float t) {
		return easeInOutQuart(t, 0f, 1f, 1f);
	}

	public static float easeInQuint(float t) {
		return easeInQuint(t, 0f, 1f, 1f);
	}

	public static float easeOutQuint(float t) {
		return easeOutQuint(t, 0f, 1f, 1f);
	}

	public static float easeInOutQuint(float t) {
		return easeInOutQuint(t, 0f, 1f, 1f);
	}

	public static float easeInSine(float t) {
		return easeInSine(t, 0f, 1f, 1f);
	}

	public static float easeOutSine(float t) {
		return easeOutSine(t, 0f, 1f, 1f);
	}

	public static float easeInOutSine(float t) {
		return easeInOutSine(t, 0f, 1f, 1f);
	}

	public static float easeInExpo(float t) {
		return easeInExpo(t, 0f, 1f, 1f);
	}

	public static float easeOutExpo(float t) {
		return easeOutExpo(t, 0f, 1f, 1f);
	}

	public static float easeInOutExpo(float t) {
		return easeInOutExpo(t, 0f, 1f, 1f);
	}

	public static float easeInCirc(float t) {
		return easeInCirc(t, 0f, 1f, 1f);
	}

	public static float easeOutCirc(float t) {
		return easeOutCirc(t, 0f, 1f, 1f);
	}

	public static float easeInOutCirc(float t) {
		return easeInOutCirc(t, 0f, 1f, 1f);
	}

	public static float easeInElastic(float t) {
		return easeInElastic(t, 0f, 1f, 1f);
	}

	public static float easeOutElastic(float t) {
		return easeOutElastic(t, 0f, 1f, 1f);
	}

	public static float easeInOutElastic(float t) {
		return easeInOutElastic(t, 0f, 1f, 1f);
	}

	public static float easeInBack(float t) {
		return easeInBack(t, 0f, 1f, 1f, 1.70158f);
	}

	public static float easeOutBack(float t) {
		return easeOutBack(t, 0f, 1f, 1f, 1.70158f);
	}

	public static float easeInOutBack(float t) {
		return easeInOutBack(t, 0f, 1f, 1f, 1.70158f);
	}

	public static float easeInBounce(float t) {
		return easeInBounce(t, 0f, 1f, 1f);
	}

	public static float easeOutBounce(float t) {
		return easeOutBounce(t, 0f, 1f, 1f);
	}

	public static float easeInOutBounce(float t) {
		return easeInOutBounce(t, 0f, 1f, 1f);
	}

	/**/

	public static float easeInQuad(float t, float b, float c, float d) {
		return c * (t /= d) * t + b;
	}

	public static float easeOutQuad(float t, float b, float c, float d) {
		return -c * (t /= d) * (t - 2f) + b;
	}

	public static float easeInOutQuad(float t, float b, float c, float d) {
		if ((t /= d / 2f) < 1)
			return c / 2f * t * t + b;
		return -c / 2f * ((--t) * (t - 2f) - 1) + b;
	}

	public static float easeInCubic(float t, float b, float c, float d) {
		return c * (t /= d) * t * t + b;
	}

	public static float easeOutCubic(float t, float b, float c, float d) {
		return c * ((t = t / d - 1f) * t * t + 1f) + b;
	}

	public static float easeInOutCubic(float t, float b, float c, float d) {
		if ((t /= d / 2f) < 1)
			return c / 2f * t * t * t + b;
		return c / 2f * ((t -= 2f) * t * t + 2f) + b;
	}

	public static float easeInQuart(float t, float b, float c, float d) {
		return c * (t /= d) * t * t * t + b;
	}

	public static float easeOutQuart(float t, float b, float c, float d) {
		return -c * ((t = t / d - 1f) * t * t * t - 1f) + b;
	}

	public static float easeInOutQuart(float t, float b, float c, float d) {
		if ((t /= d / 2f) < 1f)
			return c / 2f * t * t * t * t + b;
		return -c / 2f * ((t -= 2f) * t * t * t - 2f) + b;
	}

	public static float easeInQuint(float t, float b, float c, float d) {
		return c * (t /= d) * t * t * t * t + b;
	}

	public static float easeOutQuint(float t, float b, float c, float d) {
		return c * ((t = t / d - 1f) * t * t * t * t + 1f) + b;
	}

	public static float easeInOutQuint(float t, float b, float c, float d) {
		if ((t /= d / 2f) < 1f)
			return c / 2f * t * t * t * t * t + b;
		return c / 2f * ((t -= 2f) * t * t * t * t + 2f) + b;
	}

	public static float easeInSine(float t, float b, float c, float d) {
		return (float) (-c * Math.cos(t / d * (Math.PI / 2f)) + c + b);
	}

	public static float easeOutSine(float t, float b, float c, float d) {
		return (float) (c * Math.sin(t / d * (Math.PI / 2f)) + b);
	}

	public static float easeInOutSine(float t, float b, float c, float d) {
		return (float) (-c / 2f * (Math.cos(Math.PI * t / d) - 1) + b);
	}

	public static float easeInExpo(float t, float b, float c, float d) {
		return (float) ((t == 0) ? b : c * Math.pow(2, 10f * (t / d - 1f)) + b);
	}

	public static float easeOutExpo(float t, float b, float c, float d) {
		return (float) ((t == d) ? b + c : c * (-Math.pow(2, -10f * t / d) + 1f) + b);
	}

	public static float easeInOutExpo(float t, float b, float c, float d) {
		if (t == 0)
			return b;
		if (t == d)
			return b + c;
		if ((t /= d / 2f) < 1f)
			return (float) (c / 2f * Math.pow(2, 10f * (t - 1f)) + b);
		return (float) (c / 2f * (-Math.pow(2, -10f * --t) + 2f) + b);
	}

	public static float easeInCirc(float t, float b, float c, float d) {
		return (float) (-c * (Math.sqrt(1f - (t /= d) * t) - 1f) + b);
	}

	public static float easeOutCirc(float t, float b, float c, float d) {
		return (float) (c * Math.sqrt(1 - (t = t / d - 1) * t) + b);
	}

	public static float easeInOutCirc(float t, float b, float c, float d) {
		if ((t /= d / 2) < 1)
			return (float) (-c / 2 * (Math.sqrt(1 - t * t) - 1) + b);
		return (float) (c / 2 * (Math.sqrt(1 - (t -= 2) * t) + 1) + b);
	}

	public static float easeInElastic(float t, float b, float c, float d) {
		float s = 1.70158f;
		float p = 0;
		float a = c;
		if (t == 0)
			return b;
		if ((t /= d) == 1)
			return b + c;
		p = d * 0.3f;
		if (a < Math.abs(c)) {
			a = c;
			s = p / 4f;
		} else
			s = (float) (p / (2f * Math.PI) * Math.asin(c / a));
		return (float) (-(a * Math.pow(2, 10f * (t -= 1f)) * Math.sin((t * d - s) * (2f * Math.PI) / p)) + b);
	}

	public static float easeOutElastic(float t, float b, float c, float d) {
		float s = 1.70158f;
		float p = 0;
		float a = c;
		if (t == 0)
			return b;
		if ((t /= d) == 1)
			return b + c;
		p = d * 0.3f;
		if (a < Math.abs(c)) {
			a = c;
			s = p / 4f;
		} else
			s = (float) (p / (2f * Math.PI) * Math.asin(c / a));
		return (float) (a * Math.pow(2, -10f * t) * Math.sin((t * d - s) * (2f * Math.PI) / p) + c + b);
	}

	public static float easeInOutElastic(float t, float b, float c, float d) {
		float s = 1.70158f;
		float p = 0;
		float a = c;
		if (t == 0)
			return b;
		if ((t /= d / 2) == 2)
			return b + c;
		p = d * (0.3f * 1.5f);
		if (a < Math.abs(c)) {
			a = c;
			s = p / 4f;
		} else
			s = (float) (p / (2f * Math.PI) * Math.asin(c / a));
		if (t < 1)
			return (float) (-0.5f * (a * Math.pow(2, 10f * (t -= 1f)) * Math.sin((t * d - s) * (2f * Math.PI) / p)) + b);
		return (float) (a * Math.pow(2, -10f * (t -= 1f)) * Math.sin((t * d - s) * (2f * Math.PI) / p) * 0.5f + c + b);
	}

	public static float easeInBack(float t, float b, float c, float d, float s) {
		return c * (t /= d) * t * ((s + 1f) * t - s) + b;
	}

	public static float easeOutBack(float t, float b, float c, float d, float s) {
		return c * ((t = t / d - 1f) * t * ((s + 1f) * t + s) + 1f) + b;
	}

	public static float easeInOutBack(float t, float b, float c, float d, float s) {
		if ((t /= d / 2f) < 1)
			return c / 2f * (t * t * (((s *= (1.525f)) + 1f) * t - s)) + b;
		return c / 2f * ((t -= 2f) * t * (((s *= (1.525f)) + 1f) * t + s) + 2f) + b;
	}

	public static float easeInBounce(float t, float b, float c, float d) {
		return c - easeOutBounce(d - t, 0, c, d) + b;
	}

	public static float easeOutBounce(float t, float b, float c, float d) {
		if ((t /= d) < (1f / 2.75f)) {
			return c * (7.5625f * t * t) + b;
		} else if (t < (2f / 2.75f)) {
			return c * (7.5625f * (t -= (1.5f / 2.75f)) * t + 0.75f) + b;
		} else if (t < (2.5f / 2.75f)) {
			return c * (7.5625f * (t -= (2.25f / 2.75f)) * t + 0.9375f) + b;
		} else {
			return c * (7.5625f * (t -= (2.625f / 2.75f)) * t + 0.984375f) + b;
		}
	}

	public static float easeInOutBounce(float t, float b, float c, float d) {
		if (t < d / 2f)
			return easeInBounce(t * 2f, 0, c, d) * 0.5f + b;
		return easeOutBounce(t * 2f - d, 0, c, d) * 0.5f + c * 0.5f + b;
	}
}
/*
*
* TERMS OF USE - EASING EQUATIONS
* 
* Open source under the BSD License. 
* 
* Copyright c 2001 Robert Penner
* All rights reserved.
* 
* Redistribution and use in source and binary forms, with or without modification, 
* are permitted provided that the following conditions are met:
* 
* Redistributions of source code must retain the above copyright notice, this list of 
* conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this list 
* of conditions and the following disclaimer in the documentation and/or other materials 
* provided with the distribution.
* 
* Neither the name of the author nor the names of contributors may be used to endorse 
* or promote products derived from this software without specific prior written permission.
* 
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY 
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
*  COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
*  EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
*  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
*  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 
* OF THE POSSIBILITY OF SUCH DAMAGE. 
*
*/

まさかのjQueryからの移設ですが、問題なくできるはずです。

  • written on 2013.10.04
  • category : java

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