package com.fancl.iloyalty.easing;
public class Sine implements Easing {
@Override
public double easeOut( double t, double b, double c, double d ) {
return c * Math.sin( t / d * ( Math.PI / 2 ) ) + b;
}
@Override
public double easeIn( double t, double b, double c, double d ) {
return -c * Math.cos( t / d * ( Math.PI / 2 ) ) + c + b;
}
@Override
public double easeInOut( double t, double b, double c, double d ) {
return -c / 2 * ( Math.cos( Math.PI * t / d ) - 1 ) + b;
}
}