actuate/lib/_gen/motion/easing/_Elastic/ElasticEaseInOut.js

Actuate is a flexible, fast "tween" library for animations

// Class: motion.easing._Elastic.ElasticEaseInOut

var $global = typeof window != "undefined" ? window : typeof global != "undefined" ? global : typeof self != "undefined" ? self : this

$global.Object.defineProperty(exports, "__esModule", {value: true});

var __map_reserved = {};

// Imports

var $hxClasses = require("./../../../hxClasses_stub").default;
var $import = require("./../../../import_stub").default;
function motion_easing_IEasing() {return require("./../../../motion/easing/IEasing");}

// Constructor

var ElasticEaseInOut = function(a,p) {
	this.a = a;
	this.p = p;
}

// Meta

ElasticEaseInOut.__name__ = ["motion","easing","_Elastic","ElasticEaseInOut"];
ElasticEaseInOut.__isInterface__ = false;
ElasticEaseInOut.__interfaces__ = [(motion_easing_IEasing().default)];
ElasticEaseInOut.prototype = {
	calculate: function(k) {
		if(k == 0) {
			return 0;
		}
		if((k /= 0.5) == 2) {
			return 1;
		}
		var p = 0.449999999999999956;
		var a = 1;
		var s = p / 4;
		if(k < 1) {
			return -0.5 * (Math.exp(6.931471805599453 * --k) * Math.sin((k - s) * (2 * Math.PI) / p));
		}
		return Math.exp(-6.931471805599453 * --k) * Math.sin((k - s) * (2 * Math.PI) / p) * 0.5 + 1;
	},
	ease: function(t,b,c,d) {
		if(t == 0) {
			return b;
		}
		if((t /= d / 2) == 2) {
			return b + c;
		}
		var s;
		if(this.a < Math.abs(c)) {
			this.a = c;
			s = this.p / 4;
		} else {
			s = this.p / (2 * Math.PI) * Math.asin(c / this.a);
		}
		if(t < 1) {
			return -0.5 * (this.a * Math.exp(6.931471805599453 * --t) * Math.sin((t * d - s) * (2 * Math.PI) / this.p)) + b;
		}
		return this.a * Math.exp(-6.931471805599453 * --t) * Math.sin((t * d - s) * (2 * Math.PI) / this.p) * 0.5 + c + b;
	}
};
ElasticEaseInOut.prototype.__class__ = ElasticEaseInOut.prototype.constructor = $hxClasses["motion.easing._Elastic.ElasticEaseInOut"] = ElasticEaseInOut;

// Init



// Statics




// Export

exports.default = ElasticEaseInOut;