const { PI, atan2 } = Math;


function getAngleClockwiseFromYAxis(v: number[]) {
    const [x,y] = v;
    const θ = (2*PI) - (atan2(y,x) - PI/2 + 2*PI)%(2*PI);

    return θ;
}


export {
    getAngleClockwiseFromYAxis
}