Function _makeOutIn

cocos/core/algorithm/easing.ts:491–498

(fnIn: (k: number) => number, fnOut: (k: number) => number)

export const bounceOutIn = _makeOutIn(bounceIn, bounceOut);

function _makeOutIn (fnIn: (k: number) => number, fnOut: (k: number) => number) {
    return (k: number): number => {
        if (k < 0.5) {
            return fnOut(k * 2) / 2;
        }
        return fnIn(2 * k - 1) / 2 + 0.5;
    };
}