// custom function could be called in 
// template and other functions
export async function onAutoRefresh( values ) {
    let x = values.get("数据X") - 75;
    let y = values.get("数据Y") + 480;

    // 单位：弧度
    // 范围：-π ~ +π
    // 参考方向：X 轴正方向
    // 旋转方向：逆时针为正
    let headingRad = Math.atan2(y, x);

    // 航向角 范围 -180° ~ +180°
    let headingDeg = headingRad * 180 / Math.PI;
    // 转成 0 ~ 360°
    if (headingDeg < 0) {
        headingDeg += 360;
    }

    // 修正固定偏移量
    let correctedHeading = headingDeg + $this.variable("角度修正量") * 1;
    if ( correctedHeading >= 360 ) {
        correctedHeading = correctedHeading - 360;
    }

    $this.variable("无修正航向角", correctedHeading);
}