Circ.java

package com.external.easing;

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

}